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Diffstat (limited to 'java/com/android/dialer/util/PermissionsUtil.java')
-rw-r--r-- | java/com/android/dialer/util/PermissionsUtil.java | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/java/com/android/dialer/util/PermissionsUtil.java b/java/com/android/dialer/util/PermissionsUtil.java new file mode 100644 index 000000000..70b96dfe1 --- /dev/null +++ b/java/com/android/dialer/util/PermissionsUtil.java @@ -0,0 +1,121 @@ +/* + * 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); + } +} |