public class MainActivity extends AppCompatActivity {
TelephonyManager manager;
Timer timer = new Timer ();
private int recLen = 8;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate (savedInstanceState);
setContentView(R.layout.activity_main);
manager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
init();
}
private void init() {
PhoneStateListener listener = new PhoneStateListener() {
@Override
public void onCallStateChanged(int state, String incomingNumber) {
switch (state) {
// no state
case TelephonyManager.CALL_STATE_IDLE:
// Toast.makeText(MainActivity.this, "No state", Toast.LENGTH_SHORT).show();
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
Toast.makeText(MainActivity.this, "接听" + incomingNumber, Toast.LENGTH_SHORT).show();
if ("The specified mobile phone number".equals(incomingNumber)) {
timer.schedule(task, 1000, 1000);
}
break;
// When the incoming call rings
case TelephonyManager.CALL_STATE_RINGING:
Toast.makeText(MainActivity.this, "When the incoming call rings", Toast.LENGTH_SHORT).show();
break;
default:
break;
}
super.onCallStateChanged(state, incomingNumber);
}
};
manager.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);
}
TimerTask task = new TimerTask() {
@Override
public void run() {
runOnUiThread(new Runnable() {
@Override
public void run() {
recLen--;
if (recLen < 0) {
timer.cancel();
Toast.makeText(MainActivity.this, "挂断", Toast.LENGTH_SHORT).show();
try {
Method method = Class.forName("android.os.ServiceManager").getMethod("getService",String.class);
IBinder binder = (IBinder) method.invoke(null,new Object[] {TELEPHONY_SERVICE});
ITelephony telephony = ITelephony.Stub.asInterface (binder);
// hang up the phone
telephony.endCall();
} catch (Exception e) {
e.printStackTrace ();
}
}
}
});
}
};
}
Among them, ITelephony needs to import an ITelephony.aidl file
required permissions
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/>
<uses-permission android:name="android.permission.CALL_PHONE" />