private void insertDiary() {
   String title = mTitleText.getText().toString();
   String body = mBodyText.getText().toString();
   ContentValues values = new ContentValues();
   values.put(Diary.DiaryColumns.CREATED, DiaryContentProvider.getFormateCreatedDate());
   values.put(Diary.DiaryColumns.TITLE, title);
   values.put(Diary.DiaryColumns.BODY, body);
   // 使用ContentResolve对象插入数据
   getContentResolver().insert(Diary.DiaryColumns.CONTENT_URI, values);
 }
 private void updateDiary() {
   String title = mTitleText.getText().toString();
   String body = mBodyText.getText().toString();
   ContentValues values = new ContentValues();
   values.put(Diary.DiaryColumns.CREATED, DiaryContentProvider.getFormateCreatedDate());
   values.put(Diary.DiaryColumns.TITLE, title);
   values.put(Diary.DiaryColumns.BODY, body);
   // 使用ContentResolve对象更新数据
   getContentResolver().update(mUri, values, null, null);
 }