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/*
* Copyright (C) 2015 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 com.android.dialer.util;
import android.Manifest.permission;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.support.v4.content.ContextCompat;
import android.support.v4.content.LocalBroadcastManager;
import com.android.dialer.common.LogUtil;
/** Utility class to help with runtime permissions. */
public class PermissionsUtil {
private static final String PERMISSION_PREFERENCE = "dialer_permissions";
public static boolean hasPhonePermissions(Context context) {
return hasPermission(context, permission.CALL_PHONE);
}
public static boolean hasContactsPermissions(Context context) {
return hasPermission(context, permission.READ_CONTACTS);
}
public static boolean hasLocationPermissions(Context context) {
return hasPermission(context, permission.ACCESS_FINE_LOCATION);
}
public static boolean hasCameraPermissions(Context context) {
return hasPermission(context, permission.CAMERA);
}
public static boolean hasPermission(Context context, String permission) {
return ContextCompat.checkSelfPermission(context, permission)
== PackageManager.PERMISSION_GRANTED;
}
/**
* Checks {@link android.content.SharedPreferences} if a permission has been requested before.
*
* <p>It is important to note that this method only works if you call {@link
* PermissionsUtil#permissionRequested(Context, String)} in {@link
* android.app.Activity#onRequestPermissionsResult(int, String[], int[])}.
*/
public static boolean isFirstRequest(Context context, String permission) {
return context
.getSharedPreferences(PERMISSION_PREFERENCE, Context.MODE_PRIVATE)
.getBoolean(permission, true);
}
/**
* Records in {@link android.content.SharedPreferences} that the specified permission has been
* requested at least once.
*
* <p>This method should be called in {@link android.app.Activity#onRequestPermissionsResult(int,
* String[], int[])}.
*/
public static void permissionRequested(Context context, String permission) {
context
.getSharedPreferences(PERMISSION_PREFERENCE, Context.MODE_PRIVATE)
.edit()
.putBoolean(permission, false)
.apply();
}
/**
* Rudimentary methods wrapping the use of a LocalBroadcastManager to simplify the process of
* notifying other classes when a particular fragment is notified that a permission is granted.
*
* <p>To be notified when a permission has been granted, create a new broadcast receiver and
* register it using {@link #registerPermissionReceiver(Context, BroadcastReceiver, String)}
*
* <p>E.g.
*
* <p>final BroadcastReceiver receiver = new BroadcastReceiver() { @Override public void
* onReceive(Context context, Intent intent) { refreshContactsView(); } }
*
* <p>PermissionsUtil.registerPermissionReceiver(getActivity(), receiver, READ_CONTACTS);
*
* <p>If you register to listen for multiple permissions, you can identify which permission was
* granted by inspecting {@link Intent#getAction()}.
*
* <p>In the fragment that requests for the permission, be sure to call {@link
* #notifyPermissionGranted(Context, String)} when the permission is granted so that any
* interested listeners are notified of the change.
*/
public static void registerPermissionReceiver(
Context context, BroadcastReceiver receiver, String permission) {
LogUtil.i("PermissionsUtil.registerPermissionReceiver", permission);
final IntentFilter filter = new IntentFilter(permission);
LocalBroadcastManager.getInstance(context).registerReceiver(receiver, filter);
}
public static void unregisterPermissionReceiver(Context context, BroadcastReceiver receiver) {
LogUtil.i("PermissionsUtil.unregisterPermissionReceiver", null);
LocalBroadcastManager.getInstance(context).unregisterReceiver(receiver);
}
public static void notifyPermissionGranted(Context context, String permission) {
LogUtil.i("PermissionsUtil.notifyPermissionGranted", permission);
final Intent intent = new Intent(permission);
LocalBroadcastManager.getInstance(context).sendBroadcast(intent);
}
}
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