2 types of listener implementations for Android-based click Listeners

Click Listener Interface: Onclicklistener

Abstract function OnClick (View v)

There are 2 methods for monitoring:

1: Current class inheritance Click Listener Interface

Package Com.example.button;

Import android.app.Activity;

Import Android.os.Bundle;

Import Android.view.Menu;

Import Android.view.View;

Import Android.view.View.OnClickListener;

Import Android.widget.Button;

Import Android.widget.TextView;

public class Mainactivity extends Activity implements onclicklistener{

Private Button Btn_ok,btn_cancel;

Private TextView TV;

@Override

protected void OnCreate (Bundle savedinstancestate) {

Super.oncreate (savedinstancestate);

Setcontentview (R.layout.activity_main);

btn_ok= (Button) Findviewbyid (R.ID.BTN_OK);

Btn_cancel= (Button) Findviewbyid (r.id.btn_cancel);

tv= (TextView) Findviewbyid (r.id.tv);

Btn_ok.setonclicklistener (this);

Btn_cancel.setonclicklistener (this);

}

public void OnClick (View v)

{

if (V==BTN_OK)

{

Tv.settext ("OK button trigger event");

}else if (v==btn_cancel)

{

Tv.settext ("Cancel button trigger event");

}

}

@Override

public boolean Oncreateoptionsmenu (Menu menu) {

Inflate the menu; This adds items to the action bar if it is present.

Getmenuinflater (). Inflate (R.menu.main, menu);

return true;

}

}

2: Using the inner class to implement the Click Listener interface

Package Com.example.button;

Import android.app.Activity;

Import Android.os.Bundle;

Import Android.view.Menu;

Import Android.view.View;

Import Android.view.View.OnClickListener;

Import Android.widget.Button;

Import Android.widget.TextView;

public class Mainactivity extends activity{

Private Button Btn_ok,btn_cancel;

Private TextView TV;

@Override

protected void OnCreate (Bundle savedinstancestate) {

Super.oncreate (savedinstancestate);

Setcontentview (R.layout.activity_main);

btn_ok= (Button) Findviewbyid (R.ID.BTN_OK);

Btn_cancel= (Button) Findviewbyid (r.id.btn_cancel);

tv= (TextView) Findviewbyid (r.id.tv);

Btn_ok.setonclicklistener (New Onclicklistener ()

{

public void OnClick (View arg0)

{

Tv.settext ("OK Trigger event");

}

}

);

Btn_cancel.setonclicklistener (New Onclicklistener ()

{

public void OnClick (View arg0)

{

Tv.settext ("Cancel button trigger event");

}

}

);

}

@Override

public boolean Oncreateoptionsmenu (Menu menu) {

Inflate the menu; This adds items to the action bar if it is present.

Getmenuinflater (). Inflate (R.menu.main, menu);

return true;

}

}

This article is from the "Hagar" blog, make sure to keep this source http://7832308.blog.51cto.com/7822308/1429158