直接上代碼，大家可以參考下
（1）自身類作為事件監聽器
package cn.edu.gdmec.s07150745.work5;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.Toast;public class MainActivity extends AppCompatActivity implements View.OnClickListener{@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button btn1 = (Button) findViewById(R.id.btn1);btn1.setText("單擊");btn1.setOnClickListener(this);}@Overridepublic void onClick(View v) {Toast.makeText(this,"已單擊我...",Toast.LENGTH_SHORT).show();System.out.println("已單擊我...");}} （2）外部類作為事件監聽器：
package cn.edu.gdmec.s07150745.work5;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.Button;public class Act2 extends AppCompatActivity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_act2);Button btn2 = (Button) findViewById(R.id.btn2);btn2.setText("單擊");btn2.setOnClickListener(new OuterClass("已單擊我..."));}}class OuterClass implements View.OnClickListener{private String str="已單擊我....";public OuterClass(String str){super();this.str=str;}@Overridepublic void onClick(View v) {System.out.println(str);}}（3）內部類作為事件監聽器：
package cn.edu.gdmec.s07150745.work5;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.Toast;public class Act3 extends AppCompatActivity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_act3);Button btn3 = (Button) findViewById(R.id.btn3);btn3.setText("單擊");btn3.setOnClickListener(new OuterClass());}class OuterClass implements View.OnClickListener{@Overridepublic void onClick(View v) {Toast.makeText(Act3.this,"已單擊我...",Toast.LENGTH_SHORT).show();System.out.println("已單擊我...");}}}（4）匿名類作為事件監聽器：
package cn.edu.gdmec.s07150745.work5;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.Toast;public class Act4 extends AppCompatActivity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_act4);Button btn4 = (Button) findViewById(R.id.btn4);btn4.setText("單擊");btn4.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {Toast.makeText(Act4.this,"已單擊我...",Toast.LENGTH_SHORT).show();System.out.println("已單擊我...");}});}} 以上四種方法之后，在xml文件中給每一個事件即activity里面定義多一個android label即可。不忘在每個activity里面添加如下藍色的一段代碼哦。
<activity android:name=".MainActivity" android:label="1"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity>
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