/**@class android.widget.ImageButton @extends android.widget.ImageView <p> Displays a button with an image (instead of text) that can be pressed or clicked by the user. By default, an ImageButton looks like a regular {@link android.widget.Button}, with the standard button background that changes color during different button states. The image on the surface of the button is defined either by the {@code android:src} attribute in the {@code <ImageButton>} XML element or by the {@link #setImageResource}(int) method.</p> <p>To remove the standard button background image, define your own background image or set the background color to be transparent.</p> <p>To indicate the different button states (focused, selected, etc.), you can define a different image for each state. E.g., a blue image by default, an orange one for when focused, and a yellow one for when pressed. An easy way to do this is with an XML drawable "selector." For example:</p> <pre> <?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_pressed="true" android:drawable="@drawable/button_pressed" /> <!-- pressed --> <item android:state_focused="true" android:drawable="@drawable/button_focused" /> <!-- focused --> <item android:drawable="@drawable/button_normal" /> <!-- default --> </selector></pre> <p>Save the XML file in your project {@code res/drawable/} folder and then reference it as a drawable for the source of your ImageButton (in the {@code android:src} attribute). Android will automatically change the image based on the state of the button and the corresponding images defined in the XML.</p> <p>The order of the {@code <item>} elements is important because they are evaluated in order. This is why the "normal" button image comes last, because it will only be applied after {@code android:state_pressed} and {@code android:state_focused} have both evaluated false.</p> <p>See the <a href="{@docRoot}guide/topics/ui/controls/button.html">Buttons</a> guide.</p> <p><strong>XML attributes</strong></p> <p> See {@link android.R.styleable#ImageView android.widget.Button Attributes}, {@link android.R.styleable#View View Attributes} </p> */ var ImageButton = { /** */ getAccessibilityClassName : function( ) {}, /** */ onResolvePointerIcon : function( ) {}, };