android |從菜單按鈕創建對話框微調按鈕

Question

我想爲我的應用程序創建一個語言選擇器。我在菜單佈局中創建了一個按鈕，並且在單擊某個選項菜單時我想要打開微調框。我是初學者，所以如果你能解釋你的答案，我很樂意。

Answer 1

首先你必須創建一個XML佈局在您的微調元素會被放置

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
     android:orientation="vertical" 
     android:padding="10dip" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content"> 



<!-- Spinner Element --> 
<Spinner 
    android:id="@+id/spinner" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:prompt="Select Language" 
/> 

</LinearLayout> 

然後我你的活動在那裏你想顯示剪斷你應該實現OnItemSelectedListener接口處理微調

public class SnipperActivity extends Activity implements OnItemSelectedListener{ 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 

    //here you get the reference to the spinner element declared in your xml layout 
    Spinner spinner = (Spinner) findViewById(R.id.spinner); 


    //set the listener to the spinner 
    spinner.setOnItemSelectedListener(this); 

//here you create an arraylist for the items to be displayed in your spinner element 
    List<String> languages = new ArrayList<String>(); 
    languages.add("English"); 
    languages.add("Greek"); 
    } 

//define an adapter for the spinner 
    ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, languages); 


//set the style of the snipper, in this case a listview with a radio button    

dataAdapter.setDropDownViewResource（android.R.layout.simple_spinner_dropdown_it EM）的選擇;

//attach the adapter to your spinner element 
    spinner.setAdapter(dataAdapter); 

} 

處理微調元素的選擇，你必須ovveride SnipperActivity類

@Override 
public void onItemSelected(AdapterView parent, View view, int position, long id) { 
    // On selecting a spinner item 
    String language = parent.getItemAtPosition(position).toString(); 

    //show a spinner item 
    Log.e("TAG", "Spinner item selected " + language); 


} 

Answer 2

看一看這篇文章上創建自定義對話框： http://android-developers.blogspot.co.uk/2012/05/using-dialogfragments.html

恕我直言紡紗不是很靈活。我會用一個ListView在我的對話框，如果我是你，但選擇是你的:)