1 package com.example.multiButtons;
 2 
 3 
 4 import android.app.Activity;
 5 import android.os.Bundle;
 6 import android.view.Menu;
 7 import android.view.MenuItem;
 8 import android.view.View;
 9 import android.view.View.OnClickListener;
10 import android.widget.Button;
11 import android.widget.Toast;
12 
13 public class MainActivity extends Activity implements OnClickListener{
14 
15     @Override
16     protected void onCreate(Bundle savedInstanceState) {
17         super.onCreate(savedInstanceState);
18         setContentView(R.layout.activity_main);
19         Button btn1 = findViewById(R.id.btn1);
20         btn1.setOnClickListener(this);
21         Button btn2 = findViewById(R.id.btn2);
22         btn2.setOnClickListener(this);
23         Button btn3 = findViewById(R.id.btn3);
24         btn3.setOnClickListener(this);
25         Button btn4 = findViewById(R.id.btn4);
26         btn4.setOnClickListener(this);
27         Button btn5 = findViewById(R.id.btn5);
28         btn5.setOnClickListener(this);
29     }
30 
31     @Override
32     public boolean onCreateOptionsMenu(Menu menu) {
33         // Inflate the menu; this adds items to the action bar if it is present.
34         getMenuInflater().inflate(R.menu.main, menu);
35         return true;
36     }
37 
38     @Override
39     public boolean onOptionsItemSelected(MenuItem item) {
40         // Handle action bar item clicks here. The action bar will
41         // automatically handle clicks on the Home/Up button, so long
42         // as you specify a parent activity in AndroidManifest.xml.
43         int id = item.getItemId();
44         if (id == R.id.action_settings) {
45             return true;
46         }
47         return super.onOptionsItemSelected(item);
48     }
49 
50     @Override
51     public void onClick(View v) {
52         // TODO Auto-generated method stub
53         switch(v.getId()) {
54         case R.id.btn1:{
55             Toast.makeText(MainActivity.this, "您点击了按钮1", Toast.LENGTH_SHORT).show();break;
56         }
57         case R.id.btn2:{
58             Toast.makeText(MainActivity.this, "您点击了按钮2", Toast.LENGTH_SHORT).show();break;
59         }
60         case R.id.btn3:{
61             Toast.makeText(MainActivity.this, "您点击了按钮3", Toast.LENGTH_SHORT).show();break;
62         }
63         case R.id.btn4:{
64             Toast.makeText(MainActivity.this, "您点击了按钮4", Toast.LENGTH_SHORT).show();break;
65         }
66         case R.id.btn5:{
67             Toast.makeText(MainActivity.this, "您点击了按钮5", Toast.LENGTH_SHORT).show();break;
68         }
69         
70         }
71     }
72 }