Android时间戳错误

我的时间戳记显示当前时间提前4小时（例如，下午12:30是当前时间，它显示的是下午4:30）任何人都可以帮助我如何更改？这里是代码：Android时间戳错误

public class MessagesDBAdapter { 

    public static final String KEY_RECIPIENT = "recipient"; 
    public static final String KEY_MESSAGE = "message"; 
    public static final String KEY_TIME = "time"; 
    public static final String KEY_ROWID = "_id"; 

    private static final String TAG = "MessagesDBAdapter"; 
    private DatabaseHelper mDbHelper; 
    private SQLiteDatabase mDb; 

    //Database creation sql statement 

    private static final String DATABASE_CREATE = 
      "create table notes (" + KEY_ROWID + " integer primary key autoincrement, " 
     + KEY_RECIPIENT + " text not null, " + KEY_MESSAGE + " text not null, " + KEY_TIME + " TIMESTAMP DEFAULT CURRENT_TIMESTAMP);"; 

    private static final String DATABASE_NAME = "data"; 
    private static final String DATABASE_TABLE = "notes"; 
    public static final String KEY_TIMESTAMP = "timeStamp"; 
    private static final int DATABASE_VERSION = 3; 


    private final Context mCtx; 

    private static class DatabaseHelper extends SQLiteOpenHelper { 

     DatabaseHelper(Context context) { 
      super(context, DATABASE_NAME, null, DATABASE_VERSION); 
     } 

     @Override 
     public void onCreate(SQLiteDatabase db) { 
      db.execSQL(DATABASE_CREATE); 
     } 

     @Override 
     public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 
      Log.w(TAG, "Upgrading database from version " + oldVersion + " to " 
        + newVersion + ", which will destroy all old data"); 
      db.execSQL("DROP TABLE IF EXISTS notes"); 
      onCreate(db); 
     } 
    } 

    /** 
    * Constructor - takes the context to allow the database to be 
    * opened/created 
    * 
    * @param ctx the Context within which to work 
    */ 
    public MessagesDBAdapter(Context ctx) { 
     this.mCtx = ctx; 
    } 

    public MessagesDBAdapter open() throws SQLException { 
     mDbHelper = new DatabaseHelper(mCtx); 
     mDb = mDbHelper.getWritableDatabase(); 
     return this; 
    } 

    public void close() { 
     mDbHelper.close(); 
    } 

    public long createNote(String phoneNo, String message) { 
     ContentValues initialValues = new ContentValues(); 
     initialValues.put(KEY_RECIPIENT, phoneNo); 
     initialValues.put(KEY_MESSAGE, message); 

     open(); 

     return mDb.insert(DATABASE_TABLE, null, initialValues); 
    } 

    public boolean deleteNote(long rowId) { 

     return mDb.delete(DATABASE_TABLE, KEY_ROWID + "=" + rowId, null) > 0; 
    } 

    public Cursor fetchAllNotes() { 

     return mDb.query(DATABASE_TABLE, new String[] {KEY_ROWID, KEY_RECIPIENT, 
       KEY_MESSAGE, KEY_TIME}, null, null, null, null, KEY_TIME + " DESC"); 
    } 

    public Cursor fetchNote(long rowId) throws SQLException { 

     Cursor mCursor = 

      mDb.query(true, DATABASE_TABLE, new String[] {KEY_ROWID, 
        KEY_RECIPIENT, KEY_MESSAGE, KEY_TIME}, KEY_ROWID + "=" + rowId, null, 
        null, null, null, null); 
     if (mCursor != null) { 
      mCursor.moveToFirst(); 
     } 
     return mCursor; 

    } 

    public long saveMessages(Timestamp date, String phoneNo, String message) { 
     ContentValues initialValues = createContentValues(date, phoneNo, message); 
     return mDb.insert(DATABASE_TABLE, null, initialValues); 
     }// 

    private ContentValues createContentValues(Timestamp date, String phoneNo, String message) { 
     ContentValues values = new ContentValues(); 
     values.put(KEY_TIME, date.toString()); 
     values.put(KEY_RECIPIENT, phoneNo); 
     values.put(KEY_MESSAGE, message); 
     return values; 
     }// 

    public Cursor getAllNotes() { 

     Cursor mCursor = 

       mDb.rawQuery("SELECT _id, time, message, recipient, " + 
       "datetime(timestampColumn, 'localtime') AS timestampColumn FROM notes", null); 
     return mCursor; 
    } 

    public boolean updateMessage(long rowId, String phoneNo, String message) { 
     ContentValues args = new ContentValues(); 
     args.put(KEY_RECIPIENT, phoneNo); 
     args.put(KEY_MESSAGE, message); 

     return mDb.update(DATABASE_TABLE, args, KEY_ROWID + "=" + rowId, null) > 0; 
    } 
}

是否有无论如何获取当前时间戳？

来源

2011-12-14 Kev

以下问题可能对您有所帮助： http://stackoverflow.com/questions/4068132/display-utc-date-time-into-date-time-according-to-the-current-time-区域， http://stackoverflow.com/questions/4286040/facing-problem-while-converting-date-to-milliseconds – 2011-12-14 06:16:47

听起来像是一个时区问题。检查时区匹配，否则您需要将其转换或确保所有时间都保存在同一时区。 – Steven 2011-12-14 06:19:16

数据库中的默认CURRENT_TIMESTAMP是格林尼治时间，而不是机器的时区 这可能是你的情况的问题。您可以检索数据并将其转换为您的时区并显示给用户。

来源

2011-12-14 06:16:33

StringBuffer sb=new StringBuffer(); 

    Calendar c = Calendar.getInstance(); 

    System.out.println("current: " + c.getTime()); 

    Log.i("GMT +", c.getTime().toString()); 
    // Log.i("GMT +", c.getTimeZone().toString()); 
    String gmt = c.getTime().toString(); 
    // String gmt = c.getTimeZone().toString(); 


    TimeZone z = c.getTimeZone(); 

    int offset = z.getRawOffset(); 
    int offsetHrs = offset/1000/60/60; 
    int offsetMins = offset/1000/60 % 60; 

    System.out.println("offset: hours " + offsetHrs); 
    System.out.println("offset: min " + offsetMins); 

    c.add(Calendar.HOUR_OF_DAY, (-offsetHrs)); 
    c.add(Calendar.MINUTE, (-offsetMins));

来源

2011-12-14 07:20:45 Android

使用

System.currentTimeMillis的（）;

获取本地区域的实时时间戳。将其与其他内容值一起插入。

来源

2013-05-09 12:09:36

Android时间戳错误

回答

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