CarAppPermissionActivity.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;
import static androidx.annotation.RestrictTo.Scope.LIBRARY;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Log;
import androidx.activity.ComponentActivity;
import androidx.activity.result.ActivityResultLauncher;
import androidx.activity.result.contract.ActivityResultContracts;
import androidx.annotation.Nullable;
import androidx.annotation.RestrictTo;
import androidx.annotation.StyleRes;
import androidx.car.app.utils.LogTags;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
* An activity for use by the car app library to request a permission.
*
* @hide
*/
@RestrictTo(LIBRARY)
public class CarAppPermissionActivity extends ComponentActivity {
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
maybeSetCustomBackground();
processInternal(getIntent());
}
@SuppressWarnings("deprecation")
private void maybeSetCustomBackground() {
@StyleRes int themeId = Resources.ID_NULL;
ApplicationInfo applicationInfo;
try {
applicationInfo = getPackageManager()
.getApplicationInfo(getPackageName(), PackageManager.GET_META_DATA);
} catch (PackageManager.NameNotFoundException e) {
return;
}
if (applicationInfo.metaData != null) {
themeId = applicationInfo.metaData.getInt("androidx.car.app.theme");
}
Context themeableContext = createConfigurationContext(getResources().getConfiguration());
if (themeId != Resources.ID_NULL) {
themeableContext.setTheme(themeId);
}
int layoutAttr = themeableContext.getResources().getIdentifier(
"carPermissionActivityLayout", "attr", getPackageName());
if (layoutAttr == Resources.ID_NULL) {
return;
}
int[] attr = {layoutAttr};
TypedArray ta = themeableContext.getTheme().obtainStyledAttributes(attr);
int layoutId = ta.getResourceId(0, Resources.ID_NULL);
if (layoutId == Resources.ID_NULL) {
return;
}
setContentView(layoutId);
}
private void processInternal(@Nullable Intent intent) {
if (intent != null && CarContext.REQUEST_PERMISSIONS_ACTION.equals(intent.getAction())) {
requestPermissions(intent);
} else {
Log.e(LogTags.TAG,
"Unexpected intent action for CarAppPermissionActivity: " + (intent == null
? "null Intent" : intent.getAction()));
finish();
}
}
private void requestPermissions(Intent intent) {
Bundle extras = intent.getExtras();
IBinder binder =
extras.getBinder(CarContext.EXTRA_ON_REQUEST_PERMISSIONS_RESULT_LISTENER_KEY);
IOnRequestPermissionsListener listener =
IOnRequestPermissionsListener.Stub.asInterface(binder);
String[] permissions = extras.getStringArray(CarContext.EXTRA_PERMISSIONS_KEY);
if (listener == null || permissions == null) {
Log.e(LogTags.TAG, "Intent to request permissions is missing the callback binder");
finish();
return;
}
ActivityResultLauncher<String[]> launcher =
registerForActivityResult(new ActivityResultContracts.RequestMultiplePermissions(),
grantedMap -> {
List<String> granted = new ArrayList<>();
List<String> rejected = new ArrayList<>();
for (Map.Entry<String, Boolean> entry : grantedMap.entrySet()) {
Boolean isGranted = entry.getValue();
if (isGranted != null && isGranted) {
granted.add(entry.getKey());
} else {
rejected.add(entry.getKey());
}
}
try {
listener.onRequestPermissionsResult(granted.toArray(new String[0]),
rejected.toArray(new String[0]));
} catch (RemoteException e) {
Log.e(LogTags.TAG, "CarAppService dead when accepting/rejecting "
+ "permissions", e);
}
finish();
});
launcher.launch(permissions);
}
}