首先，新建一个类，继承于BroadcastReceive,然后去配置Manifest.xml

1 
     
      2             
      
       3                 
       4             
      5         
     

然后加上android.permission.PROCESS_OUTGOING_CALLS权限（一定要记得加，不要加错了）

接下来写业务逻辑就行了，那就简单了

首先是MainActicity:

1 public class MainActivity extends Activity implements View.OnClickListener { 2  3     EditText et; 4     @Override 5     protected void onCreate(Bundle savedInstanceState) { 6         super.onCreate(savedInstanceState); 7         setContentView(R.layout.activity_main); 8  9         Button btn = (Button)findViewById(R.id.btn);10         et = (EditText) findViewById(R.id.et);11         btn.setOnClickListener(this);12     }13 14     @Override15     public void onClick(View view) {16         String str = et.getText().toString().trim();17         SharedPreferences sp= getSharedPreferences("config",0);18         sp.edit().putString("ipnumber",str).commit(); //一定记得提交19         Toast.makeText(this,"ip设置成功",Toast.LENGTH_SHORT).show();20     }21 }

然后就是我们刚新建的那个类了

1 public class PhoneOnReceice extends BroadcastReceiver { 2     @Override 3     public void onReceive(Context context, Intent intent) { 4         SharedPreferences sp = context.getSharedPreferences("config",0); 5         String ip = sp.getString("ipnumber",""); 6         String currentNumber = getResultData();//获取当前要拨打的电话号码 7         System.out.println("广播调用成功"); 8         if (currentNumber.startsWith("0")){ 9             System.out.print("进入if中");10             setResultData(ip+currentNumber);11         }12     }13 }

当Mainfest.xml中的action执行的时候，就会执行BroadcastReceiver子类PhoneOnReceive中的onReceice方法。

注意其中的getResultData():是用来得到当前输入的手机号码的