android按钮点击——implements View.OnClickListener

还可以使用如下方式进行button的响应，就是不使用匿名内部类，可以直接让当前类实现OnClickListener接口即可。下面是代码：

package xueyou.xueyoucto.com.androidviews;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.util.Log;import android.view.MotionEvent;import android.view.View;import android.widget.Button;import android.widget.Toast;public class MainActivity extends AppCompatActivity implements View.OnClickListener{    private final String Tag = "MAINACTIVITY";    public Button button1;    public Button button2;    public Button button3;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        button1 = (Button) this.findViewById(R.id.button1);        button2 = (Button) this.findViewById(R.id.button2);        button3 = (Button) this.findViewById(R.id.button3);        button1.setOnClickListener(this);        button2.setOnClickListener(this);        button3.setOnClickListener(this);    }    @Override    public void onClick(View v){        switch (v.getId()){            case R.id.button1:                Toast.makeText(MainActivity.this, "button1.click", Toast.LENGTH_SHORT).show();                break;            case R.id.button2:                Toast.makeText(MainActivity.this, "button2.click", Toast.LENGTH_SHORT).show();                break;            case R.id.button3:                Toast.makeText(MainActivity.this, "button3.click", Toast.LENGTH_SHORT).show();                break;        }    }}

<?xml version="1.0" encoding="utf-8"?>

运行结果：

android按钮点击——implements View.OnClickListener

android按钮点击——implements View.OnClickListener

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