For local images, we can easily achieve click status through selector.
However, in our project, a click-through implementation of non-local images still stumped many people; therefore, this blog post was written to explain it specifically.
In fact, the implementation principle of non-local images in Android is very simple. You only need to change the alpha value of the displayed image when the ImageView is pressed.
Example 1
Code Snippet 1
Copy the codeThe code is as follows:
onTouchListener =new (){
@Override
public boolean onTouch(View v, MotionEvent event) {
ImageView imgView=(ImageView )v;
if(()==MotionEvent.ACTION_DOWN) {
(0xDF);
();
} else if(()==MotionEvent.ACTION_UP||()==MotionEvent.ACTION_CANCEL) {
(0xFF);
();
}
return false;
}};
Code Snippet 2
Copy the codeThe code is as follows:
View adsView = (.ads_item, null);
ImageView img1 = (ImageView) (.ads_item_left);
ImageView img2 = (ImageView) (.ads_item_right);
(uri1);
(uri2)
(onTouchListener);
(onTouchListener);
Finish!