Four Technologies for Android button listeners

Android development often use a variety of listeners, Android Listener writing and Java have different places;

Using an inner class to implement an interface in 1,activity, creating an internal class instance using the Add method is similar to Java

Create an instance of the listener

Mylis lis = new Mylis ();

To add a listener to a button using the Add method

Internal class creation Listener

Android Code:

1. Class Mylis implements onclicklistener{
3. @Override
4. public void OnClick (View v) {
6. }
7. }

2, anonymous class add listener

Android Code:

1. Button btn = (button) Findviewbyid (R.ID.BTN);
3. Btn.setonclicklistener (New Onclicklistener () {
5. @Override
6. public void OnClick (View v) {
8. }
9. });

3, Implement Interface

Adding the OnClick method to the 4,xml configuration file

Android Code:

1. Configure the notation in the button XML
2. android:onclick="Change"
4. In the activity page, just create the method directly
5. public void Change (View v) {
7. }

Four Technologies for Android button listeners