Android programming dynamic button implementation method

This article describes the implementation method of dynamic buttons for Android programming. Share it for your reference, as follows:

The first type:This method is implemented through onTouch,

btn3 = (ImageButton) findViewById(.ImageButton03);
(touchListener3);
 touchListener = new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
ImageButton imageBtn = (ImageButton) v;
if(() == MotionEvent.ACTION_DOWN){
//Change to background image when pressedimageBtn .setImageResource();
}else if(() == MotionEvent.ACTION_UP){
//Replace the picture when liftedimageBtn .setImageResource();
}
return false;
}
};

The second type:Implemented through XML

Implemented with XML files:

<?xml version="1.0" encoding="UTF-8"?>
<selector xmlns:andro>
<item
android:state_pressed="false"
android:drawable="@drawable/button_add" />
<item
android:state_pressed="true"
android:drawable="@drawable/button_add_pressed" />
<item
android:state_focused="true"
android:drawable="@drawable/button_add_pressed" />
<item
android:drawable="@drawable/button_add" />
</selector>

This file is placed in the drawable directory. Named button_add_x.xml

When using:

<ImageButton
android:
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#00000000"
android:src="@drawable/button_add_x"
>
</ImageButton>

For more information about Android related content, please check out the topic of this site:Android layout layout tips summary》、《Android View View Tips Summary》、《Android development introduction and advanced tutorial》、《Android debugging skills and solutions to common problems》、《Android multimedia operation skills summary (audio, video, recording, etc.)》、《Summary of the usage of basic Android components"and"Android control usage summary》

I hope this article will be helpful to everyone's Android programming design.