dazhan | aa938df | 2016-02-23 18:00:55 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016, The Linux Foundation. All rights reserved. |
| 3 | |
| 4 | Redistribution and use in source and binary forms, with or without |
| 5 | modification, are permitted provided that the following conditions are |
| 6 | met: |
| 7 | * Redistributions of source code must retain the above copyright |
| 8 | notice, this list of conditions and the following disclaimer. |
| 9 | * Redistributions in binary form must reproduce the above |
| 10 | copyright notice, this list of conditions and the following |
| 11 | disclaimer in the documentation and/or other materials provided |
| 12 | with the distribution. |
| 13 | * Neither the name of The Linux Foundation nor the names of its |
| 14 | contributors may be used to endorse or promote products derived |
| 15 | from this software without specific prior written permission. |
| 16 | |
| 17 | THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| 18 | WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 19 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| 20 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| 21 | BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 22 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 23 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 24 | BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 25 | WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| 26 | OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| 27 | IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 28 | */ |
| 29 | |
| 30 | package com.android.calendar; |
| 31 | |
| 32 | import android.app.Activity; |
| 33 | import android.content.Context; |
| 34 | import android.content.Intent; |
| 35 | import android.content.pm.PackageManager; |
| 36 | import android.os.Bundle; |
| 37 | import android.os.Trace; |
| 38 | import android.widget.Toast; |
| 39 | |
| 40 | import java.util.ArrayList; |
| 41 | import java.util.Arrays; |
| 42 | |
| 43 | /** |
| 44 | * Activity that asks the user for all {@link #getDesiredPermissions} if any of |
| 45 | * {@link #getRequiredPermissions} are missing. |
| 46 | * |
| 47 | * NOTE: As a result of b/22095159, this can behave oddly in the case where the |
| 48 | * final permission you are requesting causes an application restart. |
| 49 | */ |
| 50 | public abstract class RequestPermissionsActivityBase extends Activity { |
| 51 | public static final String PREVIOUS_ACTIVITY_INTENT = "previous_intent"; |
| 52 | private static final int PERMISSIONS_REQUEST_ALL_PERMISSIONS = 1; |
| 53 | |
| 54 | /** |
| 55 | * @return list of permissions that are needed in order for |
| 56 | * {@link #PREVIOUS_ACTIVITY_INTENT} to operate. You only need to |
| 57 | * return a single permission per permission group you care about. |
| 58 | */ |
| 59 | protected abstract String[] getRequiredPermissions(); |
| 60 | |
| 61 | /** |
| 62 | * @return list of permissions that would be useful for |
| 63 | * {@link #PREVIOUS_ACTIVITY_INTENT} to operate. You only need to |
| 64 | * return a single permission per permission group you care about. |
| 65 | */ |
| 66 | protected abstract String[] getDesiredPermissions(); |
| 67 | |
| 68 | private Intent mPreviousActivityIntent; |
| 69 | |
| 70 | @Override |
| 71 | protected void onCreate(Bundle savedInstanceState) { |
| 72 | super.onCreate(savedInstanceState); |
| 73 | mPreviousActivityIntent = (Intent) getIntent().getExtras().get( |
| 74 | PREVIOUS_ACTIVITY_INTENT); |
| 75 | |
| 76 | if (savedInstanceState == null) { |
| 77 | requestPermissions(); |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * If any permissions the canlendar app needs are missing, open an Activity |
| 83 | * to prompt the user for these permissions. Moreover, finish the current |
| 84 | * activity. |
| 85 | * |
| 86 | * This is designed to be called inside |
| 87 | * {@link android.app.Activity#onCreate} |
| 88 | */ |
| 89 | protected static boolean startPermissionActivity(Activity activity, |
| 90 | String[] requiredPermissions, Class<?> newActivityClass) { |
| 91 | if (!RequestPermissionsActivity.hasPermissions(activity, |
| 92 | requiredPermissions)) { |
| 93 | final Intent intent = new Intent(activity, newActivityClass); |
| 94 | intent.putExtra(PREVIOUS_ACTIVITY_INTENT, activity.getIntent()); |
| 95 | activity.startActivity(intent); |
| 96 | activity.finish(); |
| 97 | return true; |
| 98 | } |
| 99 | return false; |
| 100 | } |
| 101 | |
| 102 | @Override |
| 103 | public void onRequestPermissionsResult(int requestCode, |
| 104 | String permissions[], int[] grantResults) { |
| 105 | if (permissions != null && permissions.length > 0 |
| 106 | && isAllGranted(permissions, grantResults)) { |
| 107 | mPreviousActivityIntent.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION); |
| 108 | startActivity(mPreviousActivityIntent); |
| 109 | finish(); |
| 110 | overridePendingTransition(0, 0); |
| 111 | } else { |
| 112 | Toast.makeText(this, R.string.on_permission_read_calendar, Toast.LENGTH_SHORT).show(); |
| 113 | finish(); |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | private boolean isAllGranted(String permissions[], int[] grantResult) { |
| 118 | for (int i = 0; i < permissions.length; i++) { |
| 119 | if (grantResult[i] != PackageManager.PERMISSION_GRANTED |
| 120 | && isPermissionRequired(permissions[i])) { |
| 121 | return false; |
| 122 | } |
| 123 | } |
| 124 | return true; |
| 125 | } |
| 126 | |
| 127 | private boolean isPermissionRequired(String p) { |
| 128 | return Arrays.asList(getRequiredPermissions()).contains(p); |
| 129 | } |
| 130 | |
| 131 | private void requestPermissions() { |
| 132 | Trace.beginSection("requestPermissions"); |
| 133 | try { |
| 134 | // Construct a list of missing permissions |
| 135 | final ArrayList<String> unsatisfiedPermissions = new ArrayList<>(); |
| 136 | for (String permission : getDesiredPermissions()) { |
| 137 | if (checkSelfPermission(permission) |
| 138 | != PackageManager.PERMISSION_GRANTED) { |
| 139 | unsatisfiedPermissions.add(permission); |
| 140 | } |
| 141 | } |
| 142 | if (unsatisfiedPermissions.size() == 0) { |
| 143 | throw new RuntimeException("Request permission activity was called even" |
| 144 | + " though all permissions are satisfied."); |
| 145 | } |
| 146 | requestPermissions( |
| 147 | unsatisfiedPermissions.toArray(new String[unsatisfiedPermissions.size()]), |
| 148 | PERMISSIONS_REQUEST_ALL_PERMISSIONS); |
| 149 | } finally { |
| 150 | Trace.endSection(); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | protected static boolean hasPermissions(Context context, |
| 155 | String[] permissions) { |
| 156 | Trace.beginSection("hasPermission"); |
| 157 | try { |
| 158 | for (String permission : permissions) { |
| 159 | if (context.checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) { |
| 160 | return false; |
| 161 | } |
| 162 | } |
| 163 | return true; |
| 164 | } finally { |
| 165 | Trace.endSection(); |
| 166 | } |
| 167 | } |
| 168 | } |