<receiver android:name=".PhoneOnReceice">
             <intent-filter>
                 <action android:name="android.intent.action.NEW_OUTGOING_CALL"/>
             </intent-filter>
         </receiver>

<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/>

 public class MainActivity extends Activity implements View.OnClickListener {

     EditText et;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);

         Button btn = (Button)findViewById(R.id.btn);
         et = (EditText) findViewById(R.id.et);
         btn.setOnClickListener(this);
     }

     @Override
     public void onClick(View view) {
         String str = et.getText().toString().trim();
         SharedPreferences sp= getSharedPreferences("config",0);
         sp.edit().putString("ipnumber",str).commit(); //一定记得提交
         Toast.makeText(this,"ip设置成功",Toast.LENGTH_SHORT).show();
     }
 }

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