问题
I'm going to use endCall method of ITelephony.aidl to disconnect all incoming calls programmatically.
This is my BroadcastReceiver:
public class CallBlocker extends BroadcastReceiver {
String number;
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction() != null && intent.getAction().equals("android.intent.action.PHONE_STATE")) {
disconnectIncomingCall(context);
}
}
private void disconnectIncomingCall(Context context) {
ITelephony telephonyService;
TelephonyManager telephony = (TelephonyManager) context.getSystemService(TELEPHONY_SERVICE);
try {
Class c = Class.forName(telephony.getClass().getName());
Method m = c.getDeclaredMethod("getITelephony");
m.setAccessible(true);
IBinder binder = (IBinder) m.invoke(null, new Object[]{TELEPHONY_SERVICE});
telephonyService = ITelephony.Stub.asInterface(binder);
telephonyService.endCall();
} catch (Exception e) {
e.printStackTrace();
}
}
}
And this is my Service:
public class MyService extends Service {
@Nullable
@Override
public IBinder onBind(Intent intent) {
return new ITelephony.Stub() {
@Override
public boolean endCall() throws RemoteException {
return false;
}
@Override
public void answerRingingCall() throws RemoteException {
}
@Override
public void silenceRinger() throws RemoteException {
}
};
}
}
And this is the ITelephony.aidl file:
package com.android.internal.telephony;
interface ITelephony {
boolean endCall();
void answerRingingCall();
void silenceRinger();
}
And I declared Service and BroadcastReceiver in Manifest.
When I run the project and I connect call, I get this error:
java.lang.NullPointerException: null receiver
On this line:
IBinder binder = (IBinder) m.invoke(null, new Object[]{TELEPHONY_SERVICE});
How can I solve this problem to block all incoming calls programmatically in android?
来源：https://stackoverflow.com/questions/50819906/disconnect-incoming-call-programmatically-in-android-nougat-api-24