HostUpdateReceiver.java
/*
* Copyright 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.car.app.activity;
import static androidx.annotation.RestrictTo.Scope.LIBRARY;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import androidx.annotation.NonNull;
import androidx.annotation.RestrictTo;
/**
* {@link BroadcastReceiver} used to detect host updates, and trigger automatic re-connection.
*
* @hide
*/
@RestrictTo(LIBRARY)
public class HostUpdateReceiver extends BroadcastReceiver {
private final CarAppViewModel mViewModel;
public HostUpdateReceiver(@NonNull CarAppViewModel viewModel) {
mViewModel = viewModel;
}
/** Registers this broadcast receiver */
public void register(@NonNull Context context) {
context.registerReceiver(this, createFilter(Intent.ACTION_PACKAGE_REPLACED));
}
private IntentFilter createFilter(String intentAction) {
IntentFilter filter = new IntentFilter(intentAction);
filter.addDataScheme("package");
return filter;
}
/** Unregisters this broadcast receiver */
public void unregister(@NonNull Context context) {
context.unregisterReceiver(this);
}
@Override
public void onReceive(@NonNull Context context, @NonNull Intent intent) {
if (!intent.getAction().equals(Intent.ACTION_PACKAGE_REPLACED)) {
// Ignore
return;
}
mViewModel.onHostUpdated();
}
}