1 /*
2  * Copyright (C) 2015 Google Inc. All Rights Reserved.
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.example.android.wearable.runtimepermissions;
18 
19 import android.Manifest;
20 import android.content.Intent;
21 import android.content.pm.PackageManager;
22 import android.os.Bundle;
23 import android.support.annotation.NonNull;
24 import android.support.v4.app.ActivityCompat;
25 import android.support.v7.app.AppCompatActivity;
26 import android.util.Log;
27 import android.view.View;
28 
29 /**
30  * This is a simple splash screen (activity) for giving more details on why the user should approve
31  * phone permissions for storage. If they choose to move forward, the permission screen
32  * is brought up. Either way (approve or disapprove), this will exit to the MainPhoneActivity after
33  * they are finished with their final decision.
34  *
35  * If this activity is started by our service (IncomingRequestPhoneService) it is marked via an
36  * extra (MainPhoneActivity.EXTRA_PROMPT_PERMISSION_FROM_WEAR). That service only starts
37  * this activity if the phone permission hasn't been approved for the data wear is trying to access.
38  * When the user decides within this Activity what to do with the permission request, it closes and
39  * opens the MainPhoneActivity (to maintain the app experience). It also again passes along the same
40  * extra (MainPhoneActivity.EXTRA_PROMPT_PERMISSION_FROM_WEAR) to alert MainPhoneActivity to
41  * send the results of the user's decision to the wear device.
42  */
43 public class PhonePermissionRequestActivity extends AppCompatActivity implements
44         ActivityCompat.OnRequestPermissionsResultCallback {
45 
46     private static final String TAG = "PhoneRationale";
47 
48     /* Id to identify Location permission request. */
49     private static final int PERMISSION_REQUEST_READ_STORAGE = 1;
50 
51     @Override
onCreate(Bundle savedInstanceState)52     protected void onCreate(Bundle savedInstanceState) {
53         super.onCreate(savedInstanceState);
54 
55         // If permissions granted, we start the main activity (shut this activity down).
56         if (ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE)
57                 == PackageManager.PERMISSION_GRANTED) {
58             startMainActivity();
59         }
60 
61         setContentView(R.layout.activity_phone_permission_request);
62     }
63 
onClickApprovePermissionRequest(View view)64     public void onClickApprovePermissionRequest(View view) {
65         Log.d(TAG, "onClickApprovePermissionRequest()");
66 
67         // On 23+ (M+) devices, External storage permission not granted. Request permission.
68         ActivityCompat.requestPermissions(
69                 this,
70                 new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
71                 PERMISSION_REQUEST_READ_STORAGE);
72     }
73 
onClickDenyPermissionRequest(View view)74     public void onClickDenyPermissionRequest(View view) {
75         Log.d(TAG, "onClickDenyPermissionRequest()");
76         startMainActivity();
77     }
78 
79     /*
80      * Callback received when a permissions request has been completed.
81      */
82     @Override
onRequestPermissionsResult( int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults)83     public void onRequestPermissionsResult(
84             int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
85 
86         String permissionResult = "Request code: " + requestCode + ", Permissions: " + permissions
87                 + ", Results: " + grantResults;
88         Log.d(TAG, "onRequestPermissionsResult(): " + permissionResult);
89 
90         if (requestCode == PERMISSION_REQUEST_READ_STORAGE) {
91             // Close activity regardless of user's decision (decision picked up in main activity).
92             startMainActivity();
93         }
94     }
95 
startMainActivity()96     private void startMainActivity() {
97 
98         Intent mainActivityIntent = new Intent(this, MainPhoneActivity.class);
99 
100         /*
101          * If service started this Activity (b/c wear requested data where permissions were not
102          * approved), tells MainPhoneActivity to send results to wear device (via this extra).
103          */
104         boolean serviceStartedActivity = getIntent().getBooleanExtra(
105                 MainPhoneActivity.EXTRA_PROMPT_PERMISSION_FROM_WEAR, false);
106 
107         if (serviceStartedActivity) {
108            mainActivityIntent.putExtra(
109                    MainPhoneActivity.EXTRA_PROMPT_PERMISSION_FROM_WEAR, true);
110         }
111 
112         startActivity(mainActivityIntent);
113     }
114 }