的AsyncTask doInBackground方法 - 參數誤差

Question

我使用的AsyncTask調用在另一個類中的一些代碼：

public class addNewLocation extends AsyncTask<HomerLocation, Integer, Void> { 

    @Override 
    protected Void doInBackground(HomerLocation... location) { 
     bridge.addNewLocation(location); 
     return null; 
    } 

    protected void onPostExecute(String result) { 
     System.out.println("Result after execution is : " + result); 
    } 
} 

我從這個命令中一個按鈕的代碼調用此：

new addNewLocation().execute(newLocation,null,null); 

newLocation是一個Object，它有一些屬性，我通過用戶在對話框中的輸入來設置屬性。

線「bridge.addNewLocation（位置）;試圖調用addNewLocation方法在我的橋類路過稱爲位置HomerLocation對象作爲參數。然而，我發現了一個錯誤：

The method addNewLocation(HomerLocation) in the type HomerJSONBridge is not 
applicable for the arguments (HomerLocation[]) 

。

橋類的方法如下：

public void addNewLocation(HomerLocation location) { 
    // code to add new location to homer 
    //HomerLocation location = locationArray; 
    client = new DefaultHttpClient(); 
    StringBuilder url = new StringBuilder(HomerURL); 
    url.append("%7B%22operation%22%3A%22setLocation%22%2C%20%22name%22%3A%22"+location.getName()+ 
      "%22%2C%20%22locationContextID%22%3A%22"+location.getContextID()+"%22%2C%20%22image%22%3A%22"+location.getIcon()+ 
      "%22%2C%22design%22%3A%22"+location.getDesign()+"%22%7D"); 
} 

這傳遞一個JSON命令我訪問servlet，如果我在所有地方重寫代碼如下：

protected Void doInBackground(HomerLocation... location) { 
     HomerLocation location1 = location[0]; 
     bridge.addNewLocation(location1); 
     return null; 
    } 

和

public void addNewLocation(HomerLocation[] locationArray) { 
    // code to add new location to homer 
    HomerLocation location = locationArray[0]; 
    client = new DefaultHttpClient(); 
    StringBuilder url = new StringBuilder(HomerURL); 
    url.append("%7B%22operation%22%3A%22setLocation%22%2C%20%22name%22%3A%22"+location.getName()+ 
      "%22%2C%20%22locationContextID%22%3A%22"+location.getContextID()+"%22%2C%20%22image%22%3A%22"+location.getIcon()+ 
      "%22%2C%22design%22%3A%22"+location.getDesign()+"%22%7D"); 
} 

我仍然得到類似的錯誤（！）：

The method addNewLocation(HomerLocation[]) in the type HomerJSONBridge is 
not applicable for the arguments (HomerLocation) 

我，因爲它似乎是既HomerLocation對象，也是一個HomerLocation []真糊塗！任何幫助將非常感激。

Answer 1

protected Void doInBackground(HomerLocation... location) 

的...語法方法參數意味着location是HomerLocation（HomerLocation[]）的陣列，而不是一個單一的HomerLocation對象。

如果你確定它總是會是一個元素寬，那麼最快的解決方法是：

@Override 
protected Void doInBackground(HomerLocation... location) { 
    bridge.addNewLocation(location[0]); 
    return null; 
} 

Answer 2

嘗試喜歡這個，因爲你HomerLocation ...位置和HomerLocation對象的數組。

protected Void doInBackground(HomerLocation... location) { 

    bridge.addNewLocation(location[0]); 
    return null; 
} 

和

public void addNewLocation(HomerLocation locationArray) { 

    HomerLocation location = locationArray; 
    client = new DefaultHttpClient(); 
    StringBuilder url = new StringBuilder(HomerURL); 
    url.append("%7B%22operation%22%3A%22setLocation%22%2C%20%22name%22%3A%22"+location.getName()+ 
     "%22%2C%20%22locationContextID%22%3A%22"+location.getContextID()+"%22%2C%20%22image%22%3A%22"+location.getIcon()+ 
     "%22%2C%22design%22%3A%22"+location.getDesign()+"%22%7D"); 
} 

我認爲這會幫助你。