| /* |
| * Copyright (C) 2011 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.ex.chips; |
| |
| import android.Manifest; |
| import android.content.Context; |
| import android.content.pm.PackageManager; |
| import android.os.Build; |
| import android.os.Process; |
| import android.support.annotation.Nullable; |
| |
| public class ChipsUtil { |
| |
| /** |
| * Listener that gets notified when we check whether we have permission. |
| */ |
| public interface PermissionsCheckListener { |
| void onPermissionCheck(String permission, boolean granted); |
| } |
| |
| /** |
| * Permissions required by Chips library. |
| */ |
| public static final String[] REQUIRED_PERMISSIONS = |
| new String[] { Manifest.permission.READ_CONTACTS }; |
| |
| /** |
| * Returns true when the caller can use Chips UI in its environment. |
| */ |
| public static boolean supportsChipsUi() { |
| return Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH; |
| } |
| |
| /** |
| * Whether we are running on M or later version. |
| * |
| * <p>This is interesting for us because new permission model is introduced in M and we need to |
| * check if we have {@link #REQUIRED_PERMISSIONS}. |
| */ |
| public static boolean isRunningMOrLater() { |
| return Build.VERSION.SDK_INT >= Build.VERSION_CODES.M; |
| } |
| |
| /** |
| * Returns {@link PackageManager#PERMISSION_GRANTED} if given permission is granted, or |
| * {@link PackageManager#PERMISSION_DENIED} if not. |
| */ |
| public static int checkPermission(Context context, String permission) { |
| if (isRunningMOrLater()) { |
| // TODO: Use "context.checkSelfPermission(permission)" once it's safe to move to M sdk |
| return context.checkPermission(permission, Process.myPid(), Process.myUid()); |
| } else { |
| // Assume that we have permission before M. |
| return PackageManager.PERMISSION_GRANTED; |
| } |
| } |
| |
| /** |
| * Returns true if all permissions in {@link #REQUIRED_PERMISSIONS} are granted. |
| * |
| * <p>If {@link PermissionsCheckListener} is specified it will be called for every |
| * {@link #checkPermission} call. |
| */ |
| public static boolean hasPermissions(Context context, |
| @Nullable PermissionsCheckListener permissionsCheckListener) { |
| for (String permission : REQUIRED_PERMISSIONS) { |
| final boolean granted = |
| checkPermission(context, permission) == PackageManager.PERMISSION_GRANTED; |
| if (permissionsCheckListener != null) { |
| permissionsCheckListener.onPermissionCheck(permission, granted); |
| } |
| if (!granted) { |
| return false; |
| } |
| } |
| return true; |
| } |
| } |