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Question

嗨我已經創建了一個任務提醒應用程序。但是，我無法讓它通知任務名稱的任務的用戶。這應該是一件相當簡單的事情，但我無法做到。

我想要做的是：我保存一個名爲「任務3」的任務並在下午6點提醒我。當下午6點到來時，我收到一條通知提示「任務3」。目前，它只是說「任務​​需要審查」有沒有辦法檢索任務標題並將其作爲通知而不是字符串呈現？

這是提醒服務類類：

公共ReminderService（）{ 超（ 「ReminderService」）; }

@Override 
void doReminderWork(Intent intent) { 
    Log.d("ReminderService", "Doing work."); 
    Long rowId = intent.getExtras().getLong(RemindersDbAdapter.KEY_ROWID); 

    NotificationManager mgr = (NotificationManager)getSystemService(NOTIFICATION_SERVICE); 

    Intent notificationIntent = new Intent(this, ReminderEditActivity.class);     
    notificationIntent.putExtra(RemindersDbAdapter.KEY_ROWID, rowId); 

    PendingIntent pi = PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_ONE_SHOT); 

//這是我需要改變的方式。

Notification notification=new Notification(android.R.drawable.stat_sys_warning, getString(R.string.notify_new_task_message), System.currentTimeMillis()); 
    notification.setLatestEventInfo(this, getString(R.string.notify_new_task_title), getString(R.string.notify_new_task_message), pi); 

，這是remindersadapter類

* @param reminderDateTime the date and time the reminder should remind the user 
* @return rowId or -1 if failed 
*/ 
public long createReminder(String title, String body, String reminderDateTime) { 
    ContentValues initialValues = new ContentValues(); 
    initialValues.put(KEY_TITLE, title); 
    initialValues.put(KEY_BODY, body); 
    initialValues.put(KEY_DATE_TIME, reminderDateTime); 

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

/** 
* Delete the reminder with the given rowId 
* 
* @param rowId id of reminder to delete 
* @return true if deleted, false otherwise 
*/ 
public boolean deleteReminder(long rowId) { 

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

/** 
* Return a Cursor over the list of all reminders in the database 
* 
* @return Cursor over all reminders 
*/ 
public Cursor fetchAllReminders() { 

    return mDb.query(DATABASE_TABLE, new String[] {KEY_ROWID, KEY_TITLE, 
      KEY_BODY, KEY_DATE_TIME}, null, null, null, null, null); 
} 

/** 
* Return a Cursor positioned at the reminder that matches the given rowId 
* 
* @param rowId id of reminder to retrieve 
* @return Cursor positioned to matching reminder, if found 
* @throws SQLException if reminder could not be found/retrieved 
*/ 
public Cursor fetchReminder(long rowId) throws SQLException { 

    Cursor mCursor = 

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

} 

/** 
* Update the reminder using the details provided. The reminder to be updated is 
* specified using the rowId, and it is altered to use the title, body and reminder date time 
* values passed in 
* 
* @param rowId id of reminder to update 
* @param title value to set reminder title to 
* @param body value to set reminder body to 
* @param reminderDateTime value to set the reminder time. 
* @return true if the reminder was successfully updated, false otherwise 
*/ 
public boolean updateReminder(long rowId, String title, String body, String reminderDateTime) { 
    ContentValues args = new ContentValues(); 
    args.put(KEY_TITLE, title); 
    args.put(KEY_BODY, body); 
    args.put(KEY_DATE_TIME, reminderDateTime); 

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

}

Answer 1

如果我理解正確的，問題是你顯示你的string.xml定義的常量字符串。您應該使用從Intent獲取的行ID從您的數據庫中獲取相應的提醒並顯示其標題。

一旦你從你的fetchReminder方法檢索光標同時提供行ID，您可以使用讓您的提醒標題：

String reminderTitle = cursor.getString(cursor.getColumnIndex(RemindersDbAdapter.KEY_TITLE)); 

驗證你的光標不是null提前。