<!--
Copyright (C) 2013 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.
-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="false">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context=".MainActivity"
>
<!-- Notice the presence of nextFocusDown/nextFocusUp on the elements below. You can
also use nextFocusLeft/nextFocusRight. This tells the system in what order elements
should be navigated through. If not present, the system will make a guess based on
element location in the layout. -->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Buttons"
android:id="@+id/buttonsLabel"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:nextFocusDown="@+id/composeButton"/>
<!-- This is a regular, text-based button. No contentDescription is needed, since the
text field sufficiently describes the action performed. -->
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/composeButtonLabel"
android:id="@+id/composeButton"
android:layout_below="@+id/buttonsLabel"
android:layout_alignLeft="@+id/buttonsLabel"
android:nextFocusUp="@+id/buttonsLabel"
android:nextFocusDown="@+id/checkboxesLabel"
/>
<!-- The next two buttons are different types of image-based buttons. -->
<!-- BEGIN_INCLUDE (image_content_description) -->
<!-- Adding a contentDescription is needed for accessibility, since no text is present.
Since the contentDescription is read verbatim, you may want to be a bit more
descriptive than usual, such as adding "button" to the end of your description, if
appropriate. -->
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/discardButton"
android:layout_alignTop="@+id/composeButton"
android:layout_toRightOf="@+id/composeButton"
android:src="@drawable/ic_action_discard"
android:layout_alignBottom="@+id/composeButton"
android:contentDescription="@string/discardButtonDescription"
android:scaleType="fitCenter"
android:nextFocusUp="@+id/buttonsLabel"
android:nextFocusDown="@+id/checkboxesLabel"
/>
<!-- END_INCLUDE (image_content_description) -->
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/infoButton"
android:layout_alignTop="@+id/discardButton"
android:layout_toRightOf="@+id/discardButton"
android:src="@drawable/ic_action_info"
android:layout_alignBottom="@+id/discardButton"
android:layout_alignRight="@+id/hyperspaceCheckbox"
android:scaleType="fitCenter"
android:background="?android:selectableItemBackground"
android:padding="5dp"
android:contentDescription="@string/infoButtonDescription"
android:nextFocusUp="@+id/buttonsLabel"
android:nextFocusDown="@+id/checkboxesLabel"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/checkboxesLabel"
android:id="@+id/checkboxesLabel"
android:layout_below="@+id/composeButton"
android:layout_alignLeft="@+id/composeButton"
android:nextFocusUp="@+id/composeButton"
android:nextFocusDown="@+id/jetpackCheckbox"
/>
<!-- Like a text-based button, checkboxes with text will often work correctly as-is.
If your checkboxes do not have a text attribute, you will need to add a
contentDescriptoin. -->
<CheckBox
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/jetpackCheckboxLabel"
android:id="@+id/jetpackCheckbox"
android:layout_below="@+id/checkboxesLabel"
android:layout_alignLeft="@+id/checkboxesLabel"
android:checked="false"
android:nextFocusUp="@+id/checkboxesLabel"
android:nextFocusDown="@+id/hyperspaceCheckbox"
/>
<CheckBox
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hyperspaceCheckboxLabel"
android:id="@+id/hyperspaceCheckbox"
android:layout_below="@+id/jetpackCheckbox"
android:layout_alignLeft="@+id/jetpackCheckbox"
android:checked="false"
android:nextFocusUp="@+id/jetpackCheckbox"
android:nextFocusDown="@+id/imagesAndTextLabel"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/imagesAndTextLabel"
android:id="@+id/imagesAndTextLabel"
android:layout_below="@+id/hyperspaceCheckbox"
android:layout_alignLeft="@+id/hyperspaceCheckbox"
android:nextFocusUp="@+id/hyperspaceCheckbox"
android:nextFocusDown="@+id/partlyCloudImage"
/>
<!-- Images should have a contentDescription if they convey any meaningful
information. Images that are purely decorative may not need a contentDescription,
however. -->
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/partlyCloudyImage"
android:layout_below="@+id/imagesAndTextLabel"
android:layout_alignLeft="@+id/imagesAndTextLabel"
android:src="@drawable/partly_cloudy"
android:contentDescription="@string/partlyCloudyDescription"
android:layout_alignRight="@+id/discardButton"
android:nextFocusUp="@+id/imagesAndTextLabel"
android:nextFocusDown="@+id/customViewLabel"
/>
<!-- TextViews are typically self describing, so do not need extra modifications. -->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/temperature"
android:textSize="60sp"
android:id="@+id/temperatureText"
android:layout_alignTop="@+id/partlyCloudyImage"
android:layout_toRightOf="@+id/partlyCloudyImage"
android:layout_alignBottom="@+id/partlyCloudyImage"
android:gravity="center_vertical"
android:nextFocusUp="@+id/imagesAndTextLabel"
android:nextFocusDown="@+id/customViewLabel"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/customViewLabel"
android:id="@+id/customViewLabel"
android:layout_below="@+id/partlyCloudyImage"
android:layout_alignLeft="@+id/partlyCloudyImage"
android:nextFocusUp="@+id/partlyCloudImage"
android:nextFocusDown="@+id/dialView"
/>
<!-- Custom views require additonal code changes. See DialView.java for more
details. -->
<com.example.android.basicaccessibility.DialView
android:layout_width="200dp"
android:layout_height="200dp"
android:id="@+id/dialView"
android:layout_below="@+id/customViewLabel"
android:layout_alignLeft="@+id/partlyCloudyImage"
android:nextFocusUp="@+id/customViewLabel"
/>
</RelativeLayout>
</ScrollView>
</LinearLayout>