button click on picture Toggle Effect

button buttons picture toggle effect Settings.

Usually use the Picture button click event in the project, mostly use ImageButton. Here we use

Button's Click event, which is no longer set through Setbackgroundresource () during the switch of the picture

Click Effect. Instead, the transition effect is pre-set through. Xml. Here we are accustomed to put the. xml file under the Drawable folder.

The code is as follows:

XML file name here is Test_press.xml

1. Android:state_pressed= "true" for post-click Effects

2, android:state_focused= "true"

3, the last line <item android:drawable= "@drawable/ok"/>

is essential, otherwise it will cause confusion in the layout. In addition, the drawable of the bank is actually

The default display picture. So with this line of code, the above 2 can not be written. For the sake of the program

Integrity, we suggest or write it.

<?xml version= "1.0" encoding= "Utf-8"? ><selector xmlns:android= "http://schemas.android.com/apk/res/        Android "> <item android:drawable=" @drawable/ok_press "android:state_pressed=" true "/> <item android:drawable= "@drawable/ok" android:state_focused= "true"/> <item android:drawable= "@drawabl E/ok "/> </selector>

Settings for button buttons

Just set one step

android:background= "@drawable/test_press"

<button android:id= "@+id/button1" android:layout_width= "wrap_content" android:layout_height= "Wrap_ Content "android:background=" @drawable/test_press "/>

You only need to use the button's listener normally in the main code, and the click Effect will be switched automatically.

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button click on picture Toggle Effect