| package android.cts.backup.sharedprefrestoreapp; |
| |
| import android.app.Activity; |
| import android.content.Intent; |
| import android.content.SharedPreferences; |
| import android.os.Bundle; |
| import android.util.Log; |
| |
| /** |
| * Test activity that verifies SharedPreference restore behavior. |
| * The activity lifecycle is driven by KeyValueBackupRestoreTest and is roughly the following: |
| * |
| * 1. This activity is launched; it creates a new SharedPreferences instance and writes |
| * a known value to the INT_PREF element's via that instance. The instance is |
| * kept live. |
| * 2. The app is backed up, storing this known value in the backup dataset. |
| * 3. Next, the activity is instructed to write a different value to the INT_PREF |
| * shared preferences element. At this point, the app's current on-disk state |
| * and the live shared preferences instance are in agreement, holding a value |
| * different from that in the backup. |
| * 4. The runner triggers a restore for this app. This will rewrite the shared prefs |
| * file itself with the backed-up content (i.e. different from what was just |
| * committed from this activity). |
| * 5. Finally, the runner instructs the activity to compare the value of its existing |
| * shared prefs instance's INT_PREF element with what was previously written. |
| * The test passes if these differ, i.e. if the live shared prefs instance picked |
| * up the newly-restored data. |
| * |
| */ |
| public class SharedPrefsRestoreTestActivity extends Activity { |
| static final String TAG = "SharedPrefsTest"; |
| |
| // Shared prefs test activity actions |
| static final String INIT_ACTION = "android.backup.cts.backuprestore.INIT"; |
| static final String UPDATE_ACTION = "android.backup.cts.backuprestore.UPDATE"; |
| static final String TEST_ACTION = "android.backup.cts.backuprestore.TEST"; |
| |
| static final String RESULT_ACTION = "android.backup.cts.backuprestore.RESULT"; |
| |
| private static final String TEST_PREFS_1 = "test-prefs-1"; |
| private static final String INT_PREF = "int-pref"; |
| private static final int INT_PREF_VALUE = 1; |
| private static final int INT_PREF_MODIFIED_VALUE = 99999; |
| private static final int INT_PREF_DEFAULT_VALUE = 0; |
| private static final String EXTRA_SUCCESS = "EXTRA_SUCCESS"; |
| |
| SharedPreferences mPrefs; |
| int mLastValue; |
| |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| |
| mPrefs = getSharedPreferences(TEST_PREFS_1, MODE_PRIVATE); |
| mLastValue = 0; |
| |
| processLaunchCommand(getIntent()); |
| } |
| |
| @Override |
| protected void onNewIntent(Intent intent) { |
| processLaunchCommand(intent); |
| } |
| |
| private void processLaunchCommand(Intent intent) { |
| final String action = intent.getAction(); |
| Log.i(TAG, "processLaunchCommand: " + action); |
| |
| boolean success = false; |
| |
| if (INIT_ACTION.equals(action)) { |
| // We'll issue a backup after setting this value in shared prefs |
| success = setPrefValue(INT_PREF_VALUE); |
| } else if (UPDATE_ACTION.equals(action)) { |
| // We'll issue a *restore* after setting this value, which will send a broadcast |
| // to our receiver to read from the live instance and ensure that the value is |
| // different from what was just written. |
| success = setPrefValue(INT_PREF_MODIFIED_VALUE); |
| } else if (TEST_ACTION.equals(action)) { |
| final int currentValue = mPrefs.getInt(INT_PREF, INT_PREF_DEFAULT_VALUE); |
| Log.i(TAG, "current value: " + currentValue + " last value : " + mLastValue); |
| |
| if (currentValue != mLastValue && currentValue != INT_PREF_DEFAULT_VALUE) { |
| success = true; |
| } |
| } else { |
| // Should never happen |
| Log.e(TAG, "Unexpected intent action"); |
| return; |
| } |
| |
| sendBroadcast(new Intent().setAction(RESULT_ACTION).putExtra(EXTRA_SUCCESS, success)); |
| } |
| |
| // Write a known value prior to backup |
| private boolean setPrefValue(int value) { |
| Log.i(TAG, "mLastValue = " + mLastValue + " setPrefValue: " + value ); |
| mLastValue = value; |
| boolean success = mPrefs.edit().putInt(INT_PREF, value).commit(); |
| Log.i(TAG, "setPrefValue success: " + success); |
| return success; |
| } |
| } |