1 /* 2 * Copyright (C) 2014 The Android Open Source Project 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 android.test.wakeuploop; 18 19 import android.util.Log; 20 21 import java.io.File; 22 import java.io.FileOutputStream; 23 import java.io.IOException; 24 import java.text.DateFormat; 25 import java.text.SimpleDateFormat; 26 import java.util.Date; 27 28 public class FileUtil { 29 30 private static FileUtil sInst = null; 31 private static DateFormat sDateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss"); 32 33 private FileUtil() {}; 34 35 public static FileUtil get() { 36 if (sInst == null) { 37 sInst = new FileUtil(); 38 } 39 return sInst; 40 } 41 42 public void writeDateToFile(File file) { 43 try { 44 FileOutputStream fos = new FileOutputStream(file); 45 fos.write(sDateFormat.format(new Date()).getBytes()); 46 fos.write('\n'); 47 fos.flush(); 48 fos.close(); 49 } catch (IOException ioe) { 50 Log.e("FileUtil", "exception writing date to file", ioe); 51 } 52 } 53 } 54
