1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 17 package com.android.inputmethod.latin.permissions; 18 19 import android.app.Activity; 20 import android.content.Context; 21 import android.content.pm.PackageManager; 22 import android.os.Build; 23 import android.support.annotation.NonNull; 24 import android.support.v4.app.ActivityCompat; 25 import android.support.v4.content.ContextCompat; 26 27 import java.util.ArrayList; 28 import java.util.List; 29 30 /** 31 * Utility class for permissions. 32 */ 33 public class PermissionsUtil { 34 35 /** 36 * Returns the list of permissions not granted from the given list of permissions. 37 * @param context Context 38 * @param permissions list of permissions to check. 39 * @return the list of permissions that do not have permission to use. 40 */ 41 public static List<String> getDeniedPermissions(Context context, 42 String... permissions) { 43 final List<String> deniedPermissions = new ArrayList<>(); 44 for (String permission : permissions) { 45 if (ContextCompat.checkSelfPermission(context, permission) 46 != PackageManager.PERMISSION_GRANTED) { 47 deniedPermissions.add(permission); 48 } 49 } 50 return deniedPermissions; 51 } 52 53 /** 54 * Uses the given activity and requests the user for permissions. 55 * @param activity activity to use. 56 * @param requestCode request code/id to use. 57 * @param permissions String array of permissions that needs to be requested. 58 */ 59 public static void requestPermissions(Activity activity, int requestCode, 60 String[] permissions) { 61 ActivityCompat.requestPermissions(activity, permissions, requestCode); 62 } 63 64 /** 65 * Checks if all the permissions are granted. 66 */ 67 public static boolean allGranted(@NonNull int[] grantResults) { 68 for (int result : grantResults) { 69 if (result != PackageManager.PERMISSION_GRANTED) { 70 return false; 71 } 72 } 73 return true; 74 } 75 76 /** 77 * Queries if al the permissions are granted for the given permission strings. 78 */ 79 public static boolean checkAllPermissionsGranted(Context context, String... permissions) { 80 if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.LOLLIPOP_MR1) { 81 // For all pre-M devices, we should have all the premissions granted on install. 82 return true; 83 } 84 85 for (String permission : permissions) { 86 if (ContextCompat.checkSelfPermission(context, permission) 87 != PackageManager.PERMISSION_GRANTED) { 88 return false; 89 } 90 } 91 return true; 92 } 93 } 94
