android 监听方法
16lz
2021-01-23
只用一个监听器,通过不同的ID来判断是谁被按下
[java]
- package tjj.testButton;
- import android.app.Activity;
- import android.os.Bundle;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.widget.Button;
- import android.widget.TextView;
- public class TestbuttonActivity extends Activity {
- private Button bt1;
- private Button bt2;
- private TextView tv;
- /** Called when the activity is first created. */
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- tv = (TextView)findViewById(R.id.tv);
- bt1 = (Button)findViewById(R.id.button1);
- bt2 = (Button)findViewById(R.id.button2);
- bt1.setOnClickListener(l);
- bt2.setOnClickListener(l);
- }
- private OnClickListener l = new OnClickListener()
- {
- @Override
- public void onClick(View v)
- {
- // TODO Auto-generated method stub
- switch(v.getId())
- {
- case R.id.button1:
- tv.setText("这是第一个");
- break;
- case R.id.button2:
- tv.setText("这是第二个");
- break;
- }
- }
- };
- }
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