/*
* Copyright (C) 2009 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.backuptest;
import android.app.ListActivity;
import android.app.backup.BackupHelperDispatcher;
import android.app.backup.BackupDataInput;
import android.app.backup.BackupDataOutput;
import android.app.backup.BackupManager;
import android.app.backup.FileBackupHelper;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Handler;
import android.os.ParcelFileDescriptor;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStreamReader;
import java.io.IOException;
import java.io.PrintStream;
import java.text.DateFormat;
import java.util.Date;
public class BackupTestActivity extends ListActivity
{
static final String TAG = "BackupTestActivity";
static final String PREF_GROUP_SETTINGS = "settings";
static final String PREF_KEY = "pref";
static final String FILE_NAME = "file.txt";
BackupManager sBm = new BackupManager(this);
Test[] mTests = new Test[] {
new Test("Show File") {
void run() {
StringBuffer str = new StringBuffer();
str.append("Text is:");
BufferedReader reader = null;
try {
reader = new BufferedReader(new InputStreamReader(openFileInput(FILE_NAME)));
while (reader.ready()) {
str.append("\n");
str.append(reader.readLine());
}
} catch (IOException ex) {
str.append("ERROR: ");
str.append(ex.toString());
}
Log.d(TAG, str.toString());
Toast.makeText(BackupTestActivity.this, str, Toast.LENGTH_SHORT).show();
}
},
new Test("Append to File") {
void run() {
PrintStream output = null;
try {
output = new PrintStream(openFileOutput(FILE_NAME, MODE_APPEND));
DateFormat formatter = DateFormat.getDateTimeInstance();
output.println(formatter.format(new Date()));
output.close();
} catch (IOException ex) {
if (output != null) {
output.close();
}
}
sBm.dataChanged();
}
},
new Test("Clear File") {
void run() {
PrintStream output = null;
try {
output = new PrintStream(openFileOutput(FILE_NAME, MODE_PRIVATE));
output.close();
} catch (IOException ex) {
if (output != null) {
output.close();
}
}
sBm.dataChanged();
}
},
new Test("Poke") {
void run() {
sBm.dataChanged();
}
},
new Test("Show Shared Pref") {
void run() {
SharedPreferences prefs = getSharedPreferences(PREF_GROUP_SETTINGS, MODE_PRIVATE);
int val = prefs.getInt(PREF_KEY, 0);
String str = "'" + PREF_KEY + "' is " + val;
Log.d(TAG, str);
Toast.makeText(BackupTestActivity.this, str, Toast.LENGTH_SHORT).show();
}
},
new Test("Increment Shared Pref") {
void run() {
SharedPreferences prefs = getSharedPreferences(PREF_GROUP_SETTINGS, MODE_PRIVATE);
int val = prefs.getInt(PREF_KEY, 0);
SharedPreferences.Editor editor = prefs.edit();
editor.putInt(PREF_KEY, val+1);
editor.commit();
sBm.dataChanged();
}
},
new Test("Backup Helpers") {
void run() {
try {
writeFile("a", "a\naa", MODE_PRIVATE);
writeFile("empty", "", MODE_PRIVATE);
ParcelFileDescriptor state = ParcelFileDescriptor.open(
new File(getFilesDir(), "state"),
ParcelFileDescriptor.MODE_READ_WRITE|ParcelFileDescriptor.MODE_CREATE|
ParcelFileDescriptor.MODE_TRUNCATE);
FileBackupHelper h = new FileBackupHelper(BackupTestActivity.this,
new String[] { "a", "empty" });
FileOutputStream dataFile = openFileOutput("backup_test", MODE_WORLD_READABLE);
BackupDataOutput data = new BackupDataOutput(dataFile.getFD());
h.performBackup(null, data, state);
dataFile.close();
state.close();
} catch (IOException ex) {
throw new RuntimeException(ex);
}
}
},
new Test("Restore Helpers") {
void run() {
try {
BackupHelperDispatcher dispatch = new BackupHelperDispatcher();
dispatch.addHelper("", new FileBackupHelper(BackupTestActivity.this,
new String[] { "a", "empty" }));
FileInputStream dataFile = openFileInput("backup_test");
BackupDataInput data = new BackupDataInput(dataFile.getFD());
ParcelFileDescriptor state = ParcelFileDescriptor.open(
new File(getFilesDir(), "restore_state"),
ParcelFileDescriptor.MODE_READ_WRITE|ParcelFileDescriptor.MODE_CREATE|
ParcelFileDescriptor.MODE_TRUNCATE);
// TODO: a more plausable synthetic stored-data version number
dispatch.performRestore(data, 0, state);
dataFile.close();
state.close();
} catch (IOException ex) {
throw new RuntimeException(ex);
}
}
}
};
abstract class Test {
String name;
Test(String n) {
name = n;
}
abstract void run();
}
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
String[] labels = new String[mTests.length];
for (int i=0; i<mTests.length; i++) {
labels[i] = mTests[i].name;
}
setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, labels));
}
@Override
public void onListItemClick(ListView l, View v, int position, long id)
{
Test t = mTests[position];
Log.d(TAG, "Test: " + t.name);
t.run();
}
void writeFile(String name, String contents, int mode) {
try {
PrintStream out = new PrintStream(openFileOutput(name, mode));
out.print(contents);
out.close();
} catch (FileNotFoundException ex) {
throw new RuntimeException(ex);
}
}
}
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