Android Custom Component Event handling

Take a click event as an example:

Overwrite method:

public boolean dispatchtouchevent (Motionevent event);

You can get the event coordinates from Motionevent, which are relative coordinates (that is, the origin is the upper-left corner of the control ).

Trigger judgment, you can use

Rect.contains (x, y)

This way, to differentiate the click area.

Internally defines the custom callback interface and callback method, and provides the Setup interface:

Public Onitemselectlistener item_select = null; public static abstract Interface Onitemselectlistener{public abstract void ItemSelect (Object obj);} public void Setonitemselectlistener (Onitemselectlistener l) {this.item_select = l;}

　　

Android Custom Component Event handling