Java程序
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1899行
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68.24 KB
/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.view;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.os.Debug;
import android.os.Environment;
import android.os.Looper;
import android.os.Message;
import android.os.ParcelFileDescriptor;
import android.os.RemoteException;
import android.os.SystemClock;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.Printer;
import java.io.BufferedOutputStream;
import java.io.BufferedWriter;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.channels.FileChannel;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
/**
* Various debugging/tracing tools related to {@link View} and the view hierarchy.
*/
public class ViewDebug {
/**
* Log tag used to log errors related to the consistency of the view hierarchy.
*
* @hide
*/
public static final String CONSISTENCY_LOG_TAG = "ViewConsistency";
/**
* Flag indicating the consistency check should check layout-related properties.
*
* @hide
*/
public static final int CONSISTENCY_LAYOUT = 0x1;
/**
* Flag indicating the consistency check should check drawing-related properties.
*
* @hide
*/
public static final int CONSISTENCY_DRAWING = 0x2;
/**
* Enables or disables view hierarchy tracing. Any invoker of
* {@link #trace(View, android.view.ViewDebug.HierarchyTraceType)} should first
* check that this value is set to true as not to affect performance.
*/
public static final boolean TRACE_HIERARCHY = false;
/**
* Enables or disables view recycler tracing. Any invoker of
* {@link #trace(View, android.view.ViewDebug.RecyclerTraceType, int[])} should first
* check that this value is set to true as not to affect performance.
*/
public static final boolean TRACE_RECYCLER = false;
/**
* Profiles drawing times in the events log.
*
* @hide
*/
public static final boolean DEBUG_PROFILE_DRAWING = false;
/**
* Profiles layout times in the events log.
*
* @hide
*/
public static final boolean DEBUG_PROFILE_LAYOUT = false;
/**
* Enables detailed logging of drag/drop operations.
* @hide
*/
public static final boolean DEBUG_DRAG = false;
/**
* Enables logging of factors that affect the latency and responsiveness of an application.
*
* Logs the relative difference between the time an event was created and the time it
* was delivered.
*
* Logs the time spent waiting for Surface.lockCanvas() or eglSwapBuffers().
* This is time that the event loop spends blocked and unresponsive. Ideally, drawing
* and animations should be perfectly synchronized with VSYNC so that swap buffers
* is instantaneous.
*
* Logs the time spent in ViewRoot.performTraversals() or ViewRoot.draw().
* @hide
*/
public static final boolean DEBUG_LATENCY = false;
/**
* <p>Enables or disables views consistency check. Even when this property is enabled,
* view consistency checks happen only if {@link false} is set
* to true. The value of this property can be configured externally in one of the
* following files:</p>
* <ul>
* <li>/system/debug.prop</li>
* <li>/debug.prop</li>
* <li>/data/debug.prop</li>
* </ul>
* @hide
*/
@Debug.DebugProperty
public static boolean consistencyCheckEnabled = false;
/**
* This annotation can be used to mark fields and methods to be dumped by
* the view server. Only non-void methods with no arguments can be annotated
* by this annotation.
*/
@Target({ ElementType.FIELD, ElementType.METHOD })
@Retention(RetentionPolicy.RUNTIME)
public @interface ExportedProperty {
/**
* When resolveId is true, and if the annotated field/method return value
* is an int, the value is converted to an Android's resource name.
*
* @return true if the property's value must be transformed into an Android
* resource name, false otherwise
*/
boolean resolveId() default false;
/**
* A mapping can be defined to map int values to specific strings. For
* instance, View.getVisibility() returns 0, 4 or 8. However, these values
* actually mean VISIBLE, INVISIBLE and GONE. A mapping can be used to see
* these human readable values:
*
* <pre>
* @ViewDebug.ExportedProperty(mapping = {
* @ViewDebug.IntToString(from = 0, to = "VISIBLE"),
* @ViewDebug.IntToString(from = 4, to = "INVISIBLE"),
* @ViewDebug.IntToString(from = 8, to = "GONE")
* })
* public int getVisibility() { ...
* <pre>
*
* @return An array of int to String mappings
*
* @see android.view.ViewDebug.IntToString
*/
IntToString[] mapping() default { };
/**
* A mapping can be defined to map array indices to specific strings.
* A mapping can be used to see human readable values for the indices
* of an array:
*
* <pre>
* @ViewDebug.ExportedProperty(indexMapping = {
* @ViewDebug.IntToString(from = 0, to = "INVALID"),
* @ViewDebug.IntToString(from = 1, to = "FIRST"),
* @ViewDebug.IntToString(from = 2, to = "SECOND")
* })
* private int[] mElements;
* <pre>
*
* @return An array of int to String mappings
*
* @see android.view.ViewDebug.IntToString
* @see #mapping()
*/
IntToString[] indexMapping() default { };
/**
* A flags mapping can be defined to map flags encoded in an integer to
* specific strings. A mapping can be used to see human readable values
* for the flags of an integer:
*
* <pre>
* @ViewDebug.ExportedProperty(flagMapping = {
* @ViewDebug.FlagToString(mask = ENABLED_MASK, equals = ENABLED, name = "ENABLED"),
* @ViewDebug.FlagToString(mask = ENABLED_MASK, equals = DISABLED, name = "DISABLED"),
* })
* private int mFlags;
* <pre>
*
* A specified String is output when the following is true:
*
* @return An array of int to String mappings
*/
FlagToString[] flagMapping() default { };
/**
* When deep export is turned on, this property is not dumped. Instead, the
* properties contained in this property are dumped. Each child property
* is prefixed with the name of this property.
*
* @return true if the properties of this property should be dumped
*
* @see #prefix()
*/
boolean deepExport() default false;
/**
* The prefix to use on child properties when deep export is enabled
*
* @return a prefix as a String
*
* @see #deepExport()
*/
String prefix() default "";
/**
* Specifies the category the property falls into, such as measurement,
* layout, drawing, etc.
*
* @return the category as String
*/
String category() default "";
}
/**
* Defines a mapping from an int value to a String. Such a mapping can be used
* in a @ExportedProperty to provide more meaningful values to the end user.
*
* @see android.view.ViewDebug.ExportedProperty
*/
@Target({ ElementType.TYPE })
@Retention(RetentionPolicy.RUNTIME)
public @interface IntToString {
/**
* The original int value to map to a String.
*
* @return An arbitrary int value.
*/
int from();
/**
* The String to use in place of the original int value.
*
* @return An arbitrary non-null String.
*/
String to();
}
/**
* Defines a mapping from an flag to a String. Such a mapping can be used
* in a @ExportedProperty to provide more meaningful values to the end user.
*
* @see android.view.ViewDebug.ExportedProperty
*/
@Target({ ElementType.TYPE })
@Retention(RetentionPolicy.RUNTIME)
public @interface FlagToString {
/**
* The mask to apply to the original value.
*
* @return An arbitrary int value.
*/
int mask();
/**
* The value to compare to the result of:
* <code>original value & {@link #mask()}</code>.
*
* @return An arbitrary value.
*/
int equals();
/**
* The String to use in place of the original int value.
*
* @return An arbitrary non-null String.
*/
String name();
/**
* Indicates whether to output the flag when the test is true,
* or false. Defaults to true.
*/
boolean outputIf() default true;
}
/**
* This annotation can be used to mark fields and methods to be dumped when
* the view is captured. Methods with this annotation must have no arguments
* and must return a valid type of data.
*/
@Target({ ElementType.FIELD, ElementType.METHOD })
@Retention(RetentionPolicy.RUNTIME)
public @interface CapturedViewProperty {
/**
* When retrieveReturn is true, we need to retrieve second level methods
* e.g., we need myView.getFirstLevelMethod().getSecondLevelMethod()
* we will set retrieveReturn = true on the annotation of
* myView.getFirstLevelMethod()
* @return true if we need the second level methods
*/
boolean retrieveReturn() default false;
}
private static HashMap<Class<?>, Method[]> mCapturedViewMethodsForClasses = null;
private static HashMap<Class<?>, Field[]> mCapturedViewFieldsForClasses = null;
// Maximum delay in ms after which we stop trying to capture a View's drawing
private static final int CAPTURE_TIMEOUT = 4000;
private static final String REMOTE_COMMAND_CAPTURE = "CAPTURE";
private static final String REMOTE_COMMAND_DUMP = "DUMP";
private static final String REMOTE_COMMAND_INVALIDATE = "INVALIDATE";
private static final String REMOTE_COMMAND_REQUEST_LAYOUT = "REQUEST_LAYOUT";
private static final String REMOTE_PROFILE = "PROFILE";
private static final String REMOTE_COMMAND_CAPTURE_LAYERS = "CAPTURE_LAYERS";
private static final String REMOTE_COMMAND_OUTPUT_DISPLAYLIST = "OUTPUT_DISPLAYLIST";
private static HashMap<Class<?>, Field[]> sFieldsForClasses;
private static HashMap<Class<?>, Method[]> sMethodsForClasses;
private static HashMap<AccessibleObject, ExportedProperty> sAnnotations;
/**
* Defines the type of hierarhcy trace to output to the hierarchy traces file.
*/
public enum HierarchyTraceType {
INVALIDATE,
INVALIDATE_CHILD,
INVALIDATE_CHILD_IN_PARENT,
REQUEST_LAYOUT,
ON_LAYOUT,
ON_MEASURE,
DRAW,
BUILD_CACHE
}
private static BufferedWriter sHierarchyTraces;
private static ViewRootImpl sHierarhcyRoot;
private static String sHierarchyTracePrefix;
/**
* Defines the type of recycler trace to output to the recycler traces file.
*/
public enum RecyclerTraceType {
NEW_VIEW,
BIND_VIEW,
RECYCLE_FROM_ACTIVE_HEAP,
RECYCLE_FROM_SCRAP_HEAP,
MOVE_TO_SCRAP_HEAP,
MOVE_FROM_ACTIVE_TO_SCRAP_HEAP
}
private static class RecyclerTrace {
public int view;
public RecyclerTraceType type;
public int position;
public int indexOnScreen;
}
private static View sRecyclerOwnerView;
private static List<View> sRecyclerViews;
private static List<RecyclerTrace> sRecyclerTraces;
private static String sRecyclerTracePrefix;
private static final ThreadLocal<LooperProfiler> sLooperProfilerStorage =
new ThreadLocal<LooperProfiler>();
/**
* Returns the number of instanciated Views.
*
* @return The number of Views instanciated in the current process.
*
* @hide
*/
public static long getViewInstanceCount() {
return Debug.countInstancesOfClass(View.class);
}
/**
* Returns the number of instanciated ViewAncestors.
*
* @return The number of ViewAncestors instanciated in the current process.
*
* @hide
*/
public static long getViewRootImplCount() {
return Debug.countInstancesOfClass(ViewRootImpl.class);
}
/**
* Starts profiling the looper associated with the current thread.
* You must call {@link #stopLooperProfiling} to end profiling
* and obtain the traces. Both methods must be invoked on the
* same thread.
*
* @hide
*/
public static void startLooperProfiling(String path, FileDescriptor fileDescriptor) {
if (sLooperProfilerStorage.get() == null) {
LooperProfiler profiler = new LooperProfiler(path, fileDescriptor);
sLooperProfilerStorage.set(profiler);
Looper.myLooper().setMessageLogging(profiler);
}
}
/**
* Stops profiling the looper associated with the current thread.
*
* @see #startLooperProfiling(String, java.io.FileDescriptor)
*
* @hide
*/
public static void stopLooperProfiling() {
LooperProfiler profiler = sLooperProfilerStorage.get();
if (profiler != null) {
sLooperProfilerStorage.remove();
Looper.myLooper().setMessageLogging(null);
profiler.save();
}
}
private static class LooperProfiler implements Looper.Profiler, Printer {
private static final String LOG_TAG = "LooperProfiler";
private static final int TRACE_VERSION_NUMBER = 3;
private static final int ACTION_EXIT_METHOD = 0x1;
private static final int HEADER_SIZE = 32;
private static final String HEADER_MAGIC = "SLOW";
private static final short HEADER_RECORD_SIZE = (short) 14;
private final long mTraceWallStart;
private final long mTraceThreadStart;
private final ArrayList<Entry> mTraces = new ArrayList<Entry>(512);
private final HashMap<String, Integer> mTraceNames = new HashMap<String, Integer>(32);
private int mTraceId = 0;
private final String mPath;
private ParcelFileDescriptor mFileDescriptor;
LooperProfiler(String path, FileDescriptor fileDescriptor) {
mPath = path;
try {
mFileDescriptor = ParcelFileDescriptor.dup(fileDescriptor);
} catch (IOException e) {
Log.e(LOG_TAG, "Could not write trace file " + mPath, e);
throw new RuntimeException(e);
}
mTraceWallStart = SystemClock.currentTimeMicro();
mTraceThreadStart = SystemClock.currentThreadTimeMicro();
}
@Override
public void println(String x) {
// Ignore messages
}
@Override
public void profile(Message message, long wallStart, long wallTime,
long threadStart, long threadTime) {
Entry entry = new Entry();
entry.traceId = getTraceId(message);
entry.wallStart = wallStart;
entry.wallTime = wallTime;
entry.threadStart = threadStart;
entry.threadTime = threadTime;
mTraces.add(entry);
}
private int getTraceId(Message message) {
String name = message.getTarget().getMessageName(message);
Integer traceId = mTraceNames.get(name);
if (traceId == null) {
traceId = mTraceId++ << 4;
mTraceNames.put(name, traceId);
}
return traceId;
}
void save() {
// Don't block the UI thread
new Thread(new Runnable() {
@Override
public void run() {
saveTraces();
}
}, "LooperProfiler[" + mPath + "]").start();
}
private void saveTraces() {
FileOutputStream fos = new FileOutputStream(mFileDescriptor.getFileDescriptor());
DataOutputStream out = new DataOutputStream(new BufferedOutputStream(fos));
try {
writeHeader(out, mTraceWallStart, mTraceNames, mTraces);
out.flush();
writeTraces(fos, out.size(), mTraceWallStart, mTraceThreadStart, mTraces);
Log.d(LOG_TAG, "Looper traces ready: " + mPath);
} catch (IOException e) {
Log.e(LOG_TAG, "Could not write trace file " + mPath, e);
} finally {
try {
out.close();
} catch (IOException e) {
Log.e(LOG_TAG, "Could not write trace file " + mPath, e);
}
try {
mFileDescriptor.close();
} catch (IOException e) {
Log.e(LOG_TAG, "Could not write trace file " + mPath, e);
}
}
}
private static void writeTraces(FileOutputStream out, long offset, long wallStart,
long threadStart, ArrayList<Entry> entries) throws IOException {
FileChannel channel = out.getChannel();
// Header
ByteBuffer buffer = ByteBuffer.allocateDirect(HEADER_SIZE);
buffer.put(HEADER_MAGIC.getBytes());
buffer = buffer.order(ByteOrder.LITTLE_ENDIAN);
buffer.putShort((short) TRACE_VERSION_NUMBER); // version
buffer.putShort((short) HEADER_SIZE); // offset to data
buffer.putLong(wallStart); // start time in usec
buffer.putShort(HEADER_RECORD_SIZE); // size of a record in bytes
// padding to 32 bytes
for (int i = 0; i < HEADER_SIZE - 18; i++) {
buffer.put((byte) 0);
}
buffer.flip();
channel.position(offset).write(buffer);
buffer = ByteBuffer.allocateDirect(14).order(ByteOrder.LITTLE_ENDIAN);
for (Entry entry : entries) {
buffer.putShort((short) 1); // we simulate only one thread
buffer.putInt(entry.traceId); // entering method
buffer.putInt((int) (entry.threadStart - threadStart));
buffer.putInt((int) (entry.wallStart - wallStart));
buffer.flip();
channel.write(buffer);
buffer.clear();
buffer.putShort((short) 1);
buffer.putInt(entry.traceId | ACTION_EXIT_METHOD); // exiting method
buffer.putInt((int) (entry.threadStart + entry.threadTime - threadStart));
buffer.putInt((int) (entry.wallStart + entry.wallTime - wallStart));
buffer.flip();
channel.write(buffer);
buffer.clear();
}
channel.close();
}
private static void writeHeader(DataOutputStream out, long start,
HashMap<String, Integer> names, ArrayList<Entry> entries) throws IOException {
Entry last = entries.get(entries.size() - 1);
long wallTotal = (last.wallStart + last.wallTime) - start;
startSection("version", out);
addValue(null, Integer.toString(TRACE_VERSION_NUMBER), out);
addValue("data-file-overflow", "false", out);
addValue("clock", "dual", out);
addValue("elapsed-time-usec", Long.toString(wallTotal), out);
addValue("num-method-calls", Integer.toString(entries.size()), out);
addValue("clock-call-overhead-nsec", "1", out);
addValue("vm", "dalvik", out);
startSection("threads", out);
addThreadId(1, "main", out);
startSection("methods", out);
addMethods(names, out);
startSection("end", out);
}
private static void addMethods(HashMap<String, Integer> names, DataOutputStream out)
throws IOException {
for (Map.Entry<String, Integer> name : names.entrySet()) {
out.writeBytes(String.format("0x%08x\tEventQueue\t%s\t()V\tLooper\t-2\n",
name.getValue(), name.getKey()));
}
}
private static void addThreadId(int id, String name, DataOutputStream out)
throws IOException {
out.writeBytes(Integer.toString(id) + '\t' + name + '\n');
}
private static void addValue(String name, String value, DataOutputStream out)
throws IOException {
if (name != null) {
out.writeBytes(name + "=");
}
out.writeBytes(value + '\n');
}
private static void startSection(String name, DataOutputStream out) throws IOException {
out.writeBytes("*" + name + '\n');
}
static class Entry {
int traceId;
long wallStart;
long wallTime;
long threadStart;
long threadTime;
}
}
/**
* Outputs a trace to the currently opened recycler traces. The trace records the type of
* recycler action performed on the supplied view as well as a number of parameters.
*
* @param view the view to trace
* @param type the type of the trace
* @param parameters parameters depending on the type of the trace
*/
public static void trace(View view, RecyclerTraceType type, int... parameters) {
if (sRecyclerOwnerView == null || sRecyclerViews == null) {
return;
}
if (!sRecyclerViews.contains(view)) {
sRecyclerViews.add(view);
}
final int index = sRecyclerViews.indexOf(view);
RecyclerTrace trace = new RecyclerTrace();
trace.view = index;
trace.type = type;
trace.position = parameters[0];
trace.indexOnScreen = parameters[1];
sRecyclerTraces.add(trace);
}
/**
* Starts tracing the view recycler of the specified view. The trace is identified by a prefix,
* used to build the traces files names: <code>/EXTERNAL/view-recycler/PREFIX.traces</code> and
* <code>/EXTERNAL/view-recycler/PREFIX.recycler</code>.
*
* Only one view recycler can be traced at the same time. After calling this method, any
* other invocation will result in a <code>IllegalStateException</code> unless
* {@link #stopRecyclerTracing()} is invoked before.
*
* Traces files are created only after {@link #stopRecyclerTracing()} is invoked.
*
* This method will return immediately if TRACE_RECYCLER is false.
*
* @param prefix the traces files name prefix
* @param view the view whose recycler must be traced
*
* @see #stopRecyclerTracing()
* @see #trace(View, android.view.ViewDebug.RecyclerTraceType, int[])
*/
public static void startRecyclerTracing(String prefix, View view) {
//noinspection PointlessBooleanExpression,ConstantConditions
if (!TRACE_RECYCLER) {
return;
}
if (sRecyclerOwnerView != null) {
throw new IllegalStateException("You must call stopRecyclerTracing() before running" +
" a new trace!");
}
sRecyclerTracePrefix = prefix;
sRecyclerOwnerView = view;
sRecyclerViews = new ArrayList<View>();
sRecyclerTraces = new LinkedList<RecyclerTrace>();
}
/**
* Stops the current view recycer tracing.
*
* Calling this method creates the file <code>/EXTERNAL/view-recycler/PREFIX.traces</code>
* containing all the traces (or method calls) relative to the specified view's recycler.
*
* Calling this method creates the file <code>/EXTERNAL/view-recycler/PREFIX.recycler</code>
* containing all of the views used by the recycler of the view supplied to
* {@link #startRecyclerTracing(String, View)}.
*
* This method will return immediately if TRACE_RECYCLER is false.
*
* @see #startRecyclerTracing(String, View)
* @see #trace(View, android.view.ViewDebug.RecyclerTraceType, int[])
*/
public static void stopRecyclerTracing() {
//noinspection PointlessBooleanExpression,ConstantConditions
if (!TRACE_RECYCLER) {
return;
}
if (sRecyclerOwnerView == null || sRecyclerViews == null) {
throw new IllegalStateException("You must call startRecyclerTracing() before" +
" stopRecyclerTracing()!");
}
File recyclerDump = new File(Environment.getExternalStorageDirectory(), "view-recycler/");
//noinspection ResultOfMethodCallIgnored
recyclerDump.mkdirs();
recyclerDump = new File(recyclerDump, sRecyclerTracePrefix + ".recycler");
try {
final BufferedWriter out = new BufferedWriter(new FileWriter(recyclerDump), 8 * 1024);
for (View view : sRecyclerViews) {
final String name = view.getClass().getName();
out.write(name);
out.newLine();
}
out.close();
} catch (IOException e) {
Log.e("View", "Could not dump recycler content");
return;
}
recyclerDump = new File(Environment.getExternalStorageDirectory(), "view-recycler/");
recyclerDump = new File(recyclerDump, sRecyclerTracePrefix + ".traces");
try {
if (recyclerDump.exists()) {
//noinspection ResultOfMethodCallIgnored
recyclerDump.delete();
}
final FileOutputStream file = new FileOutputStream(recyclerDump);
final DataOutputStream out = new DataOutputStream(file);
for (RecyclerTrace trace : sRecyclerTraces) {
out.writeInt(trace.view);
out.writeInt(trace.type.ordinal());
out.writeInt(trace.position);
out.writeInt(trace.indexOnScreen);
out.flush();
}
out.close();
} catch (IOException e) {
Log.e("View", "Could not dump recycler traces");
return;
}
sRecyclerViews.clear();
sRecyclerViews = null;
sRecyclerTraces.clear();
sRecyclerTraces = null;
sRecyclerOwnerView = null;
}
/**
* Outputs a trace to the currently opened traces file. The trace contains the class name
* and instance's hashcode of the specified view as well as the supplied trace type.
*
* @param view the view to trace
* @param type the type of the trace
*/
public static void trace(View view, HierarchyTraceType type) {
if (sHierarchyTraces == null) {
return;
}
try {
sHierarchyTraces.write(type.name());
sHierarchyTraces.write(' ');
sHierarchyTraces.write(view.getClass().getName());
sHierarchyTraces.write('@');
sHierarchyTraces.write(Integer.toHexString(view.hashCode()));
sHierarchyTraces.newLine();
} catch (IOException e) {
Log.w("View", "Error while dumping trace of type " + type + " for view " + view);
}
}
/**
* Starts tracing the view hierarchy of the specified view. The trace is identified by a prefix,
* used to build the traces files names: <code>/EXTERNAL/view-hierarchy/PREFIX.traces</code> and
* <code>/EXTERNAL/view-hierarchy/PREFIX.tree</code>.
*
* Only one view hierarchy can be traced at the same time. After calling this method, any
* other invocation will result in a <code>IllegalStateException</code> unless
* {@link #stopHierarchyTracing()} is invoked before.
*
* Calling this method creates the file <code>/EXTERNAL/view-hierarchy/PREFIX.traces</code>
* containing all the traces (or method calls) relative to the specified view's hierarchy.
*
* This method will return immediately if TRACE_HIERARCHY is false.
*
* @param prefix the traces files name prefix
* @param view the view whose hierarchy must be traced
*
* @see #stopHierarchyTracing()
* @see #trace(View, android.view.ViewDebug.HierarchyTraceType)
*/
public static void startHierarchyTracing(String prefix, View view) {
//noinspection PointlessBooleanExpression,ConstantConditions
if (!TRACE_HIERARCHY) {
return;
}
if (sHierarhcyRoot != null) {
throw new IllegalStateException("You must call stopHierarchyTracing() before running" +
" a new trace!");
}
File hierarchyDump = new File(Environment.getExternalStorageDirectory(), "view-hierarchy/");
//noinspection ResultOfMethodCallIgnored
hierarchyDump.mkdirs();
hierarchyDump = new File(hierarchyDump, prefix + ".traces");
sHierarchyTracePrefix = prefix;
try {
sHierarchyTraces = new BufferedWriter(new FileWriter(hierarchyDump), 8 * 1024);
} catch (IOException e) {
Log.e("View", "Could not dump view hierarchy");
return;
}
sHierarhcyRoot = (ViewRootImpl) view.getRootView().getParent();
}
/**
* Stops the current view hierarchy tracing. This method closes the file
* <code>/EXTERNAL/view-hierarchy/PREFIX.traces</code>.
*
* Calling this method creates the file <code>/EXTERNAL/view-hierarchy/PREFIX.tree</code>
* containing the view hierarchy of the view supplied to
* {@link #startHierarchyTracing(String, View)}.
*
* This method will return immediately if TRACE_HIERARCHY is false.
*
* @see #startHierarchyTracing(String, View)
* @see #trace(View, android.view.ViewDebug.HierarchyTraceType)
*/
public static void stopHierarchyTracing() {
//noinspection PointlessBooleanExpression,ConstantConditions
if (!TRACE_HIERARCHY) {
return;
}
if (sHierarhcyRoot == null || sHierarchyTraces == null) {
throw new IllegalStateException("You must call startHierarchyTracing() before" +
" stopHierarchyTracing()!");
}
try {
sHierarchyTraces.close();
} catch (IOException e) {
Log.e("View", "Could not write view traces");
}
sHierarchyTraces = null;
File hierarchyDump = new File(Environment.getExternalStorageDirectory(), "view-hierarchy/");
//noinspection ResultOfMethodCallIgnored
hierarchyDump.mkdirs();
hierarchyDump = new File(hierarchyDump, sHierarchyTracePrefix + ".tree");
BufferedWriter out;
try {
out = new BufferedWriter(new FileWriter(hierarchyDump), 8 * 1024);
} catch (IOException e) {
Log.e("View", "Could not dump view hierarchy");
return;
}
View view = sHierarhcyRoot.getView();
if (view instanceof ViewGroup) {
ViewGroup group = (ViewGroup) view;
dumpViewHierarchy(group, out, 0);
try {
out.close();
} catch (IOException e) {
Log.e("View", "Could not dump view hierarchy");
}
}
sHierarhcyRoot = null;
}
static void dispatchCommand(View view, String command, String parameters,
OutputStream clientStream) throws IOException {
// Paranoid but safe...
view = view.getRootView();
if (REMOTE_COMMAND_DUMP.equalsIgnoreCase(command)) {
dump(view, clientStream);
} else if (REMOTE_COMMAND_CAPTURE_LAYERS.equalsIgnoreCase(command)) {
captureLayers(view, new DataOutputStream(clientStream));
} else {
final String[] params = parameters.split(" ");
if (REMOTE_COMMAND_CAPTURE.equalsIgnoreCase(command)) {
capture(view, clientStream, params[0]);
} else if (REMOTE_COMMAND_OUTPUT_DISPLAYLIST.equalsIgnoreCase(command)) {
outputDisplayList(view, params[0]);
} else if (REMOTE_COMMAND_INVALIDATE.equalsIgnoreCase(command)) {
invalidate(view, params[0]);
} else if (REMOTE_COMMAND_REQUEST_LAYOUT.equalsIgnoreCase(command)) {
requestLayout(view, params[0]);
} else if (REMOTE_PROFILE.equalsIgnoreCase(command)) {
profile(view, clientStream, params[0]);
}
}
}
private static View findView(View root, String parameter) {
// Look by type/hashcode
if (parameter.indexOf('@') != -1) {
final String[] ids = parameter.split("@");
final String className = ids[0];
final int hashCode = (int) Long.parseLong(ids[1], 16);
View view = root.getRootView();
if (view instanceof ViewGroup) {
return findView((ViewGroup) view, className, hashCode);
}
} else {
// Look by id
final int id = root.getResources().getIdentifier(parameter, null, null);
return root.getRootView().findViewById(id);
}
return null;
}
private static void invalidate(View root, String parameter) {
final View view = findView(root, parameter);
if (view != null) {
view.postInvalidate();
}
}
private static void requestLayout(View root, String parameter) {
final View view = findView(root, parameter);
if (view != null) {
root.post(new Runnable() {
public void run() {
view.requestLayout();
}
});
}
}
private static void profile(View root, OutputStream clientStream, String parameter)
throws IOException {
final View view = findView(root, parameter);
BufferedWriter out = null;
try {
out = new BufferedWriter(new OutputStreamWriter(clientStream), 32 * 1024);
if (view != null) {
profileViewAndChildren(view, out);
} else {
out.write("-1 -1 -1");
out.newLine();
}
out.write("DONE.");
out.newLine();
} catch (Exception e) {
android.util.Log.w("View", "Problem profiling the view:", e);
} finally {
if (out != null) {
out.close();
}
}
}
private static void profileViewAndChildren(final View view, BufferedWriter out)
throws IOException {
profileViewAndChildren(view, out, true);
}
private static void profileViewAndChildren(final View view, BufferedWriter out, boolean root)
throws IOException {
long durationMeasure =
(root || (view.mPrivateFlags & View.MEASURED_DIMENSION_SET) != 0) ? profileViewOperation(
view, new ViewOperation<Void>() {
public Void[] pre() {
forceLayout(view);
return null;
}
private void forceLayout(View view) {
view.forceLayout();
if (view instanceof ViewGroup) {
ViewGroup group = (ViewGroup) view;
final int count = group.getChildCount();
for (int i = 0; i < count; i++) {
forceLayout(group.getChildAt(i));
}
}
}
public void run(Void... data) {
view.measure(view.mOldWidthMeasureSpec, view.mOldHeightMeasureSpec);
}
public void post(Void... data) {
}
})
: 0;
long durationLayout =
(root || (view.mPrivateFlags & View.LAYOUT_REQUIRED) != 0) ? profileViewOperation(
view, new ViewOperation<Void>() {
public Void[] pre() {
return null;
}
public void run(Void... data) {
view.layout(view.mLeft, view.mTop, view.mRight, view.mBottom);
}
public void post(Void... data) {
}
}) : 0;
long durationDraw =
(root || !view.willNotDraw() || (view.mPrivateFlags & View.DRAWN) != 0) ? profileViewOperation(
view,
new ViewOperation<Object>() {
public Object[] pre() {
final DisplayMetrics metrics =
(view != null && view.getResources() != null) ?
view.getResources().getDisplayMetrics() : null;
final Bitmap bitmap = metrics != null ?
Bitmap.createBitmap(metrics.widthPixels,
metrics.heightPixels, Bitmap.Config.RGB_565) : null;
final Canvas canvas = bitmap != null ? new Canvas(bitmap) : null;
return new Object[] {
bitmap, canvas
};
}
public void run(Object... data) {
if (data[1] != null) {
view.draw((Canvas) data[1]);
}
}
public void post(Object... data) {
if (data[1] != null) {
((Canvas) data[1]).setBitmap(null);
}
if (data[0] != null) {
((Bitmap) data[0]).recycle();
}
}
}) : 0;
out.write(String.valueOf(durationMeasure));
out.write(' ');
out.write(String.valueOf(durationLayout));
out.write(' ');
out.write(String.valueOf(durationDraw));
out.newLine();
if (view instanceof ViewGroup) {
ViewGroup group = (ViewGroup) view;
final int count = group.getChildCount();
for (int i = 0; i < count; i++) {
profileViewAndChildren(group.getChildAt(i), out, false);
}
}
}
interface ViewOperation<T> {
T[] pre();
void run(T... data);
void post(T... data);
}
private static <T> long profileViewOperation(View view, final ViewOperation<T> operation) {
final CountDownLatch latch = new CountDownLatch(1);
final long[] duration = new long[1];
view.post(new Runnable() {
public void run() {
try {
T[] data = operation.pre();
long start = Debug.threadCpuTimeNanos();
//noinspection unchecked
operation.run(data);
duration[0] = Debug.threadCpuTimeNanos() - start;
//noinspection unchecked
operation.post(data);
} finally {
latch.countDown();
}
}
});
try {
if (!latch.await(CAPTURE_TIMEOUT, TimeUnit.MILLISECONDS)) {
Log.w("View", "Could not complete the profiling of the view " + view);
return -1;
}
} catch (InterruptedException e) {
Log.w("View", "Could not complete the profiling of the view " + view);
Thread.currentThread().interrupt();
return -1;
}
return duration[0];
}
private static void captureLayers(View root, final DataOutputStream clientStream)
throws IOException {
try {
Rect outRect = new Rect();
try {
root.mAttachInfo.mSession.getDisplayFrame(root.mAttachInfo.mWindow, outRect);
} catch (RemoteException e) {
// Ignore
}
clientStream.writeInt(outRect.width());
clientStream.writeInt(outRect.height());
captureViewLayer(root, clientStream, true);
clientStream.write(2);
} finally {
clientStream.close();
}
}
private static void captureViewLayer(View view, DataOutputStream clientStream, boolean visible)
throws IOException {
final boolean localVisible = view.getVisibility() == View.VISIBLE && visible;
if ((view.mPrivateFlags & View.SKIP_DRAW) != View.SKIP_DRAW) {
final int id = view.getId();
String name = view.getClass().getSimpleName();
if (id != View.NO_ID) {
name = resolveId(view.getContext(), id).toString();
}
clientStream.write(1);
clientStream.writeUTF(name);
clientStream.writeByte(localVisible ? 1 : 0);
int[] position = new int[2];
// XXX: Should happen on the UI thread
view.getLocationInWindow(position);
clientStream.writeInt(position[0]);
clientStream.writeInt(position[1]);
clientStream.flush();
Bitmap b = performViewCapture(view, true);
if (b != null) {
ByteArrayOutputStream arrayOut = new ByteArrayOutputStream(b.getWidth() *
b.getHeight() * 2);
b.compress(Bitmap.CompressFormat.PNG, 100, arrayOut);
clientStream.writeInt(arrayOut.size());
arrayOut.writeTo(clientStream);
}
clientStream.flush();
}
if (view instanceof ViewGroup) {
ViewGroup group = (ViewGroup) view;
int count = group.getChildCount();
for (int i = 0; i < count; i++) {
captureViewLayer(group.getChildAt(i), clientStream, localVisible);
}
}
}
private static void outputDisplayList(View root, String parameter) throws IOException {
final View view = findView(root, parameter);
view.getViewRootImpl().outputDisplayList(view);
}
private static void capture(View root, final OutputStream clientStream, String parameter)
throws IOException {
final View captureView = findView(root, parameter);
Bitmap b = performViewCapture(captureView, false);
if (b == null) {
Log.w("View", "Failed to create capture bitmap!");
// Send an empty one so that it doesn't get stuck waiting for
// something.
b = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888);
}
BufferedOutputStream out = null;
try {
out = new BufferedOutputStream(clientStream, 32 * 1024);
b.compress(Bitmap.CompressFormat.PNG, 100, out);
out.flush();
} finally {
if (out != null) {
out.close();
}
b.recycle();
}
}
private static Bitmap performViewCapture(final View captureView, final boolean skpiChildren) {
if (captureView != null) {
final CountDownLatch latch = new CountDownLatch(1);
final Bitmap[] cache = new Bitmap[1];
captureView.post(new Runnable() {
public void run() {
try {
cache[0] = captureView.createSnapshot(
Bitmap.Config.ARGB_8888, 0, skpiChildren);
} catch (OutOfMemoryError e) {
Log.w("View", "Out of memory for bitmap");
} finally {
latch.countDown();
}
}
});
try {
latch.await(CAPTURE_TIMEOUT, TimeUnit.MILLISECONDS);
return cache[0];
} catch (InterruptedException e) {
Log.w("View", "Could not complete the capture of the view " + captureView);
Thread.currentThread().interrupt();
}
}
return null;
}
private static void dump(View root, OutputStream clientStream) throws IOException {
BufferedWriter out = null;
try {
out = new BufferedWriter(new OutputStreamWriter(clientStream, "utf-8"), 32 * 1024);
View view = root.getRootView();
if (view instanceof ViewGroup) {
ViewGroup group = (ViewGroup) view;
dumpViewHierarchyWithProperties(group.getContext(), group, out, 0);
}
out.write("DONE.");
out.newLine();
} catch (Exception e) {
android.util.Log.w("View", "Problem dumping the view:", e);
} finally {
if (out != null) {
out.close();
}
}
}
private static View findView(ViewGroup group, String className, int hashCode) {
if (isRequestedView(group, className, hashCode)) {
return group;
}
final int count = group.getChildCount();
for (int i = 0; i < count; i++) {
final View view = group.getChildAt(i);
if (view instanceof ViewGroup) {
final View found = findView((ViewGroup) view, className, hashCode);
if (found != null) {
return found;
}
} else if (isRequestedView(view, className, hashCode)) {
return view;
}
}
return null;
}
private static boolean isRequestedView(View view, String className, int hashCode) {
return view.getClass().getName().equals(className) && view.hashCode() == hashCode;
}
private static void dumpViewHierarchyWithProperties(Context context, ViewGroup group,
BufferedWriter out, int level) {
if (!dumpViewWithProperties(context, group, out, level)) {
return;
}
final int count = group.getChildCount();
for (int i = 0; i < count; i++) {
final View view = group.getChildAt(i);
if (view instanceof ViewGroup) {
dumpViewHierarchyWithProperties(context, (ViewGroup) view, out, level + 1);
} else {
dumpViewWithProperties(context, view, out, level + 1);
}
}
}
private static boolean dumpViewWithProperties(Context context, View view,
BufferedWriter out, int level) {
try {
for (int i = 0; i < level; i++) {
out.write(' ');
}
out.write(view.getClass().getName());
out.write('@');
out.write(Integer.toHexString(view.hashCode()));
out.write(' ');
dumpViewProperties(context, view, out);
out.newLine();
} catch (IOException e) {
Log.w("View", "Error while dumping hierarchy tree");
return false;
}
return true;
}
private static Field[] getExportedPropertyFields(Class<?> klass) {
if (sFieldsForClasses == null) {
sFieldsForClasses = new HashMap<Class<?>, Field[]>();
}
if (sAnnotations == null) {
sAnnotations = new HashMap<AccessibleObject, ExportedProperty>(512);
}
final HashMap<Class<?>, Field[]> map = sFieldsForClasses;
Field[] fields = map.get(klass);
if (fields != null) {
return fields;
}
final ArrayList<Field> foundFields = new ArrayList<Field>();
fields = klass.getDeclaredFields();
int count = fields.length;
for (int i = 0; i < count; i++) {
final Field field = fields[i];
if (field.isAnnotationPresent(ExportedProperty.class)) {
field.setAccessible(true);
foundFields.add(field);
sAnnotations.put(field, field.getAnnotation(ExportedProperty.class));
}
}
fields = foundFields.toArray(new Field[foundFields.size()]);
map.put(klass, fields);
return fields;
}
private static Method[] getExportedPropertyMethods(Class<?> klass) {
if (sMethodsForClasses == null) {
sMethodsForClasses = new HashMap<Class<?>, Method[]>(100);
}
if (sAnnotations == null) {
sAnnotations = new HashMap<AccessibleObject, ExportedProperty>(512);
}
final HashMap<Class<?>, Method[]> map = sMethodsForClasses;
Method[] methods = map.get(klass);
if (methods != null) {
return methods;
}
final ArrayList<Method> foundMethods = new ArrayList<Method>();
methods = klass.getDeclaredMethods();
int count = methods.length;
for (int i = 0; i < count; i++) {
final Method method = methods[i];
if (method.getParameterTypes().length == 0 &&
method.isAnnotationPresent(ExportedProperty.class) &&
method.getReturnType() != Void.class) {
method.setAccessible(true);
foundMethods.add(method);
sAnnotations.put(method, method.getAnnotation(ExportedProperty.class));
}
}
methods = foundMethods.toArray(new Method[foundMethods.size()]);
map.put(klass, methods);
return methods;
}
private static void dumpViewProperties(Context context, Object view,
BufferedWriter out) throws IOException {
dumpViewProperties(context, view, out, "");
}
private static void dumpViewProperties(Context context, Object view,
BufferedWriter out, String prefix) throws IOException {
Class<?> klass = view.getClass();
do {
exportFields(context, view, out, klass, prefix);
exportMethods(context, view, out, klass, prefix);
klass = klass.getSuperclass();
} while (klass != Object.class);
}
private static void exportMethods(Context context, Object view, BufferedWriter out,
Class<?> klass, String prefix) throws IOException {
final Method[] methods = getExportedPropertyMethods(klass);
int count = methods.length;
for (int i = 0; i < count; i++) {
final Method method = methods[i];
//noinspection EmptyCatchBlock
try {
// TODO: This should happen on the UI thread
Object methodValue = method.invoke(view, (Object[]) null);
final Class<?> returnType = method.getReturnType();
final ExportedProperty property = sAnnotations.get(method);
String categoryPrefix =
property.category().length() != 0 ? property.category() + ":" : "";
if (returnType == int.class) {
if (property.resolveId() && context != null) {
final int id = (Integer) methodValue;
methodValue = resolveId(context, id);
} else {
final FlagToString[] flagsMapping = property.flagMapping();
if (flagsMapping.length > 0) {
final int intValue = (Integer) methodValue;
final String valuePrefix =
categoryPrefix + prefix + method.getName() + '_';
exportUnrolledFlags(out, flagsMapping, intValue, valuePrefix);
}
final IntToString[] mapping = property.mapping();
if (mapping.length > 0) {
final int intValue = (Integer) methodValue;
boolean mapped = false;
int mappingCount = mapping.length;
for (int j = 0; j < mappingCount; j++) {
final IntToString mapper = mapping[j];
if (mapper.from() == intValue) {
methodValue = mapper.to();
mapped = true;
break;
}
}
if (!mapped) {
methodValue = intValue;
}
}
}
} else if (returnType == int[].class) {
final int[] array = (int[]) methodValue;
final String valuePrefix = categoryPrefix + prefix + method.getName() + '_';
final String suffix = "()";
exportUnrolledArray(context, out, property, array, valuePrefix, suffix);
// Probably want to return here, same as for fields.
return;
} else if (!returnType.isPrimitive()) {
if (property.deepExport()) {
dumpViewProperties(context, methodValue, out, prefix + property.prefix());
continue;
}
}
writeEntry(out, categoryPrefix + prefix, method.getName(), "()", methodValue);
} catch (IllegalAccessException e) {
} catch (InvocationTargetException e) {
}
}
}
private static void exportFields(Context context, Object view, BufferedWriter out,
Class<?> klass, String prefix) throws IOException {
final Field[] fields = getExportedPropertyFields(klass);
int count = fields.length;
for (int i = 0; i < count; i++) {
final Field field = fields[i];
//noinspection EmptyCatchBlock
try {
Object fieldValue = null;
final Class<?> type = field.getType();
final ExportedProperty property = sAnnotations.get(field);
String categoryPrefix =
property.category().length() != 0 ? property.category() + ":" : "";
if (type == int.class) {
if (property.resolveId() && context != null) {
final int id = field.getInt(view);
fieldValue = resolveId(context, id);
} else {
final FlagToString[] flagsMapping = property.flagMapping();
if (flagsMapping.length > 0) {
final int intValue = field.getInt(view);
final String valuePrefix =
categoryPrefix + prefix + field.getName() + '_';
exportUnrolledFlags(out, flagsMapping, intValue, valuePrefix);
}
final IntToString[] mapping = property.mapping();
if (mapping.length > 0) {
final int intValue = field.getInt(view);
int mappingCount = mapping.length;
for (int j = 0; j < mappingCount; j++) {
final IntToString mapped = mapping[j];
if (mapped.from() == intValue) {
fieldValue = mapped.to();
break;
}
}
if (fieldValue == null) {
fieldValue = intValue;
}
}
}
} else if (type == int[].class) {
final int[] array = (int[]) field.get(view);
final String valuePrefix = categoryPrefix + prefix + field.getName() + '_';
final String suffix = "";
exportUnrolledArray(context, out, property, array, valuePrefix, suffix);
// We exit here!
return;
} else if (!type.isPrimitive()) {
if (property.deepExport()) {
dumpViewProperties(context, field.get(view), out, prefix
+ property.prefix());
continue;
}
}
if (fieldValue == null) {
fieldValue = field.get(view);
}
writeEntry(out, categoryPrefix + prefix, field.getName(), "", fieldValue);
} catch (IllegalAccessException e) {
}
}
}
private static void writeEntry(BufferedWriter out, String prefix, String name,
String suffix, Object value) throws IOException {
out.write(prefix);
out.write(name);
out.write(suffix);
out.write("=");
writeValue(out, value);
out.write(' ');
}
private static void exportUnrolledFlags(BufferedWriter out, FlagToString[] mapping,
int intValue, String prefix) throws IOException {
final int count = mapping.length;
for (int j = 0; j < count; j++) {
final FlagToString flagMapping = mapping[j];
final boolean ifTrue = flagMapping.outputIf();
final int maskResult = intValue & flagMapping.mask();
final boolean test = maskResult == flagMapping.equals();
if ((test && ifTrue) || (!test && !ifTrue)) {
final String name = flagMapping.name();
final String value = "0x" + Integer.toHexString(maskResult);
writeEntry(out, prefix, name, "", value);
}
}
}
private static void exportUnrolledArray(Context context, BufferedWriter out,
ExportedProperty property, int[] array, String prefix, String suffix)
throws IOException {
final IntToString[] indexMapping = property.indexMapping();
final boolean hasIndexMapping = indexMapping.length > 0;
final IntToString[] mapping = property.mapping();
final boolean hasMapping = mapping.length > 0;
final boolean resolveId = property.resolveId() && context != null;
final int valuesCount = array.length;
for (int j = 0; j < valuesCount; j++) {
String name;
String value = null;
final int intValue = array[j];
name = String.valueOf(j);
if (hasIndexMapping) {
int mappingCount = indexMapping.length;
for (int k = 0; k < mappingCount; k++) {
final IntToString mapped = indexMapping[k];
if (mapped.from() == j) {
name = mapped.to();
break;
}
}
}
if (hasMapping) {
int mappingCount = mapping.length;
for (int k = 0; k < mappingCount; k++) {
final IntToString mapped = mapping[k];
if (mapped.from() == intValue) {
value = mapped.to();
break;
}
}
}
if (resolveId) {
if (value == null) value = (String) resolveId(context, intValue);
} else {
value = String.valueOf(intValue);
}
writeEntry(out, prefix, name, suffix, value);
}
}
static Object resolveId(Context context, int id) {
Object fieldValue;
final Resources resources = context.getResources();
if (id >= 0) {
try {
fieldValue = resources.getResourceTypeName(id) + '/' +
resources.getResourceEntryName(id);
} catch (Resources.NotFoundException e) {
fieldValue = "id/0x" + Integer.toHexString(id);
}
} else {
fieldValue = "NO_ID";
}
return fieldValue;
}
private static void writeValue(BufferedWriter out, Object value) throws IOException {
if (value != null) {
String output = value.toString().replace("\n", "\\n");
out.write(String.valueOf(output.length()));
out.write(",");
out.write(output);
} else {
out.write("4,null");
}
}
private static void dumpViewHierarchy(ViewGroup group, BufferedWriter out, int level) {
if (!dumpView(group, out, level)) {
return;
}
final int count = group.getChildCount();
for (int i = 0; i < count; i++) {
final View view = group.getChildAt(i);
if (view instanceof ViewGroup) {
dumpViewHierarchy((ViewGroup) view, out, level + 1);
} else {
dumpView(view, out, level + 1);
}
}
}
private static boolean dumpView(Object view, BufferedWriter out, int level) {
try {
for (int i = 0; i < level; i++) {
out.write(' ');
}
out.write(view.getClass().getName());
out.write('@');
out.write(Integer.toHexString(view.hashCode()));
out.newLine();
} catch (IOException e) {
Log.w("View", "Error while dumping hierarchy tree");
return false;
}
return true;
}
private static Field[] capturedViewGetPropertyFields(Class<?> klass) {
if (mCapturedViewFieldsForClasses == null) {
mCapturedViewFieldsForClasses = new HashMap<Class<?>, Field[]>();
}
final HashMap<Class<?>, Field[]> map = mCapturedViewFieldsForClasses;
Field[] fields = map.get(klass);
if (fields != null) {
return fields;
}
final ArrayList<Field> foundFields = new ArrayList<Field>();
fields = klass.getFields();
int count = fields.length;
for (int i = 0; i < count; i++) {
final Field field = fields[i];
if (field.isAnnotationPresent(CapturedViewProperty.class)) {
field.setAccessible(true);
foundFields.add(field);
}
}
fields = foundFields.toArray(new Field[foundFields.size()]);
map.put(klass, fields);
return fields;
}
private static Method[] capturedViewGetPropertyMethods(Class<?> klass) {
if (mCapturedViewMethodsForClasses == null) {
mCapturedViewMethodsForClasses = new HashMap<Class<?>, Method[]>();
}
final HashMap<Class<?>, Method[]> map = mCapturedViewMethodsForClasses;
Method[] methods = map.get(klass);
if (methods != null) {
return methods;
}
final ArrayList<Method> foundMethods = new ArrayList<Method>();
methods = klass.getMethods();
int count = methods.length;
for (int i = 0; i < count; i++) {
final Method method = methods[i];
if (method.getParameterTypes().length == 0 &&
method.isAnnotationPresent(CapturedViewProperty.class) &&
method.getReturnType() != Void.class) {
method.setAccessible(true);
foundMethods.add(method);
}
}
methods = foundMethods.toArray(new Method[foundMethods.size()]);
map.put(klass, methods);
return methods;
}
private static String capturedViewExportMethods(Object obj, Class<?> klass,
String prefix) {
if (obj == null) {
return "null";
}
StringBuilder sb = new StringBuilder();
final Method[] methods = capturedViewGetPropertyMethods(klass);
int count = methods.length;
for (int i = 0; i < count; i++) {
final Method method = methods[i];
try {
Object methodValue = method.invoke(obj, (Object[]) null);
final Class<?> returnType = method.getReturnType();
CapturedViewProperty property = method.getAnnotation(CapturedViewProperty.class);
if (property.retrieveReturn()) {
//we are interested in the second level data only
sb.append(capturedViewExportMethods(methodValue, returnType, method.getName() + "#"));
} else {
sb.append(prefix);
sb.append(method.getName());
sb.append("()=");
if (methodValue != null) {
final String value = methodValue.toString().replace("\n", "\\n");
sb.append(value);
} else {
sb.append("null");
}
sb.append("; ");
}
} catch (IllegalAccessException e) {
//Exception IllegalAccess, it is OK here
//we simply ignore this method
} catch (InvocationTargetException e) {
//Exception InvocationTarget, it is OK here
//we simply ignore this method
}
}
return sb.toString();
}
private static String capturedViewExportFields(Object obj, Class<?> klass, String prefix) {
if (obj == null) {
return "null";
}
StringBuilder sb = new StringBuilder();
final Field[] fields = capturedViewGetPropertyFields(klass);
int count = fields.length;
for (int i = 0; i < count; i++) {
final Field field = fields[i];
try {
Object fieldValue = field.get(obj);
sb.append(prefix);
sb.append(field.getName());
sb.append("=");
if (fieldValue != null) {
final String value = fieldValue.toString().replace("\n", "\\n");
sb.append(value);
} else {
sb.append("null");
}
sb.append(' ');
} catch (IllegalAccessException e) {
//Exception IllegalAccess, it is OK here
//we simply ignore this field
}
}
return sb.toString();
}
/**
* Dump view info for id based instrument test generation
* (and possibly further data analysis). The results are dumped
* to the log.
* @param tag for log
* @param view for dump
*/
public static void dumpCapturedView(String tag, Object view) {
Class<?> klass = view.getClass();
StringBuilder sb = new StringBuilder(klass.getName() + ": ");
sb.append(capturedViewExportFields(view, klass, ""));
sb.append(capturedViewExportMethods(view, klass, ""));
Log.d(tag, sb.toString());
}
}