In Android, viewgroup. removeview is called in the onanimationend method, and a solution for nullpointerexception is reported.

Original translated from: http://www.cxyclub.cn/n/16666/

After implementing the fade-out effect in Android development, the viewgroup is called in the onanimationend method when an image control is removed from the interface. removeview: It took me a long time to solve the nullpointerexception problem and finally found a solution in a foreigner's forum.

The direct execution method is usually as follows:

@ Override

Public void onanimationend (animation arg0 ){

// Remove the image when the animation ends.

Viewgroup. removeview (imageview );

}

However, the NULL pointer nullpointerexception may occur.

Later, we can see that the foreigner's method is to use handler to handle it, so no exception is reported, as shown below:

@ Override

Public void onanimationend (animation arg0 ){

// Remove the image when the animation ends.

// Viewgroup. removeview (imageview );

New handler (). Post (New runnable (){

Public void run (){

Viewgroup. removeview (imageview );

}

});

}

I would like to record it and hope it will be helpful to you.

Original translated from: http://www.cxyclub.cn/n/16666/