LuK1337 | 2be2de9 | 2015-12-17 21:32:46 +0800 | [diff] [blame] | 1 | package com.android.browser; |
| 2 | |
| 3 | import android.Manifest; |
| 4 | import android.app.Activity; |
| 5 | import android.app.Dialog; |
| 6 | import android.app.AlertDialog; |
| 7 | import android.app.KeyguardManager; |
| 8 | import android.content.BroadcastReceiver; |
| 9 | import android.content.Context; |
| 10 | import android.content.DialogInterface; |
| 11 | import android.content.Intent; |
| 12 | import android.content.IntentFilter; |
| 13 | import android.content.SharedPreferences; |
| 14 | import android.content.SharedPreferences.Editor; |
| 15 | import android.content.pm.PackageManager; |
| 16 | import android.preference.PreferenceManager; |
| 17 | import android.os.Bundle; |
| 18 | import android.util.Log; |
| 19 | import android.view.KeyEvent; |
| 20 | import android.view.Window; |
| 21 | import android.view.WindowManager; |
| 22 | import com.android.browser.R; |
| 23 | |
| 24 | /** |
| 25 | * Activity that shows permissions request dialogs and handles lack of critical permissions. |
| 26 | */ |
| 27 | public class PermissionsActivity extends Activity { |
| 28 | private static final String TAG = "PermissionsActivity"; |
| 29 | |
| 30 | private static String PREF_HAS_SEEN_PERMISSIONS_DIALOGS = "pref_has_seen_permissions_dialogs"; |
| 31 | private static int PERMISSION_REQUEST_CODE = 1; |
| 32 | private static int RESULT_CODE_OK = 1; |
| 33 | private static int RESULT_CODE_FAILED = 2; |
| 34 | |
| 35 | private int mIndexPermissionRequestStorage; |
| 36 | private boolean mShouldRequestStoragePermission; |
| 37 | private int mNumPermissionsToRequest; |
| 38 | private boolean mFlagHasStoragePermission; |
| 39 | private SharedPreferences mPrefs; |
| 40 | |
| 41 | /** |
| 42 | * Close activity when secure app passes lock screen or screen turns |
| 43 | * off. |
| 44 | */ |
| 45 | private final BroadcastReceiver mShutdownReceiver = new BroadcastReceiver() { |
| 46 | @Override |
| 47 | public void onReceive(Context context, Intent intent) { |
| 48 | Log.v(TAG, "received intent, finishing: " + intent.getAction()); |
| 49 | finish(); |
| 50 | } |
| 51 | }; |
| 52 | |
| 53 | @Override |
| 54 | protected void onCreate(Bundle savedInstanceState) { |
| 55 | super.onCreate(savedInstanceState); |
| 56 | mPrefs = PreferenceManager.getDefaultSharedPreferences(this); |
| 57 | } |
| 58 | |
| 59 | @Override |
| 60 | protected void onResume() { |
| 61 | super.onResume(); |
| 62 | mNumPermissionsToRequest = 0; |
| 63 | checkPermissions(); |
| 64 | } |
| 65 | |
| 66 | private void checkPermissions() { |
| 67 | if (checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE) |
| 68 | != PackageManager.PERMISSION_GRANTED) { |
| 69 | mNumPermissionsToRequest++; |
| 70 | mShouldRequestStoragePermission = true; |
| 71 | } else { |
| 72 | mFlagHasStoragePermission = true; |
| 73 | } |
| 74 | |
| 75 | if (mNumPermissionsToRequest != 0) { |
| 76 | if (!mPrefs.getBoolean(PREF_HAS_SEEN_PERMISSIONS_DIALOGS, false)) { |
| 77 | buildPermissionsRequest(); |
| 78 | } else { |
| 79 | // Permissions dialog has already been shown |
| 80 | // and we're still missing permissions. |
| 81 | handlePermissionsFailure(); |
| 82 | } |
| 83 | } else { |
| 84 | handlePermissionsSuccess(); |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | private void buildPermissionsRequest() { |
| 89 | String[] permissionsToRequest = new String[mNumPermissionsToRequest]; |
| 90 | int permissionsRequestIndex = 0; |
| 91 | |
| 92 | if (mShouldRequestStoragePermission) { |
| 93 | permissionsToRequest[permissionsRequestIndex] = Manifest.permission.READ_EXTERNAL_STORAGE; |
| 94 | mIndexPermissionRequestStorage = permissionsRequestIndex; |
| 95 | permissionsRequestIndex++; |
| 96 | } |
| 97 | |
| 98 | Log.v(TAG, "requestPermissions count: " + permissionsToRequest.length); |
| 99 | requestPermissions(permissionsToRequest, PERMISSION_REQUEST_CODE); |
| 100 | } |
| 101 | |
| 102 | @Override |
| 103 | public void onRequestPermissionsResult(int requestCode, String permissions[], |
| 104 | int[] grantResults) { |
| 105 | Log.v(TAG, "onPermissionsResult counts: " + permissions.length + ":" + grantResults.length); |
| 106 | |
| 107 | if (mShouldRequestStoragePermission) { |
| 108 | if (grantResults.length > 0 && grantResults[mIndexPermissionRequestStorage] == |
| 109 | PackageManager.PERMISSION_GRANTED) { |
| 110 | mFlagHasStoragePermission = true; |
| 111 | } else { |
| 112 | handlePermissionsFailure(); |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | if (mFlagHasStoragePermission) { |
| 117 | handlePermissionsSuccess(); |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | private void handlePermissionsSuccess() { |
| 122 | Editor edit = mPrefs.edit(); |
| 123 | edit.putBoolean(PREF_HAS_SEEN_PERMISSIONS_DIALOGS, true); |
| 124 | edit.commit(); |
| 125 | |
| 126 | Intent intent = new Intent(this, BrowserActivity.class); |
| 127 | startActivity(intent); |
| 128 | finish(); |
| 129 | } |
| 130 | |
| 131 | private void handlePermissionsFailure() { |
| 132 | new AlertDialog.Builder(this).setTitle(getResources().getString(R.string.browser_error_title)) |
| 133 | .setMessage(getResources().getString(R.string.error_permissions)) |
| 134 | .setPositiveButton(getResources().getString(R.string.dialog_dismiss), |
| 135 | new DialogInterface.OnClickListener() { |
| 136 | @Override |
| 137 | public void onClick(DialogInterface dialog, int which) { |
| 138 | finish(); |
| 139 | } |
| 140 | }) |
| 141 | .show(); |
| 142 | } |
| 143 | } |