package cn.csdn.android.tesxt;
import android.app.Activity;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class TestListenerActivity extends Activity {
Button btn;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
findViews();
MyOnClickListener listener = new MyOnClickListener();
btn.setOnClickListener(listener);
}
private void findViews() {
btn = (Button) this.findViewById(R.id.button1);
}
class MyOnClickListener implements OnClickListener {
@Override
public void onClick(View v) {
Toast.makeText(TestListenerActivity.this, "xxx", Toast.LENGTH_SHORT)
.show();
}
}
}

package cn.csdn.android.tesxt;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class TestListenerActivity extends Activity implements OnClickListener {
Button btn;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
findViews();
btn.setOnClickListener(this);
}
private void findViews() {
btn = (Button) this.findViewById(R.id.button1);
}
@Override
public void onClick(View v) {
Toast.makeText(TestListenerActivity.this, "xxx", Toast.LENGTH_SHORT)
.show();
}
}