如何從Array的產品清單加載到ListView控件

Question

我試圖加載從陣列中物品的列表...我得到運行時錯誤

11月2日至22日：22：51.042：E/AndroidRuntime（1460 ）：了java.lang.RuntimeException：通過導致您的內容必須有一個ListView其id屬性爲 'android.R.id.list'

我R.java文件

public final class R { 
    public static final class attr { 
    } 
    public static final class drawable { 
     public static final int ic_launcher=0x7f020000; 
     public static final int icon=0x7f020001; 
    } 
    public static final class id { 
     public static final int mylist=0x7f050000; 
     public static final int next=0x7f050005; 
     public static final int play=0x7f050004; 
     public static final int prev=0x7f050003; 
     public static final int seekbar=0x7f050002; 
     public static final int selectedfile=0x7f050001; 
     public static final int text1=0x7f050006; 
    } 
    public static final class layout { 
     public static final int audiolist=0x7f030000; 
     public static final int song_item=0x7f030001; 
     public static final int songlist=0x7f030002; 
    } 
    public static final class string { 
     public static final int app_name=0x7f040000; 
    } 
} 

我的代碼：

@Override 
public void onCreate(Bundle icicle) { 
    try { 
     super.onCreate(icicle); 
     setContentView(R.layout.audiolist); 

     ListView listView = (ListView) findViewById(R.id.mylist); 
    String[] values = new String[] { "Android", "iPhone", "WindowsMobile"}; 
    ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, values); 
listView.setAdapter(spinnerArrayAdapter); 

    } catch (NullPointerException e) { 
     Log.v(getString(R.string.app_name), e.getMessage()); 
    } 
} 

佈局：audiolist

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"> 

    <ListView 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:id="@+id/mylist" 
     android:layout_weight="1.0"/> 

    <LinearLayout 
     android:orientation="vertical" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:background="@android:drawable/screen_background_light" 
     android:padding="10dip"> 

     <TextView 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:id="@+id/selectedfile" 
      android:text="Not file selected" 
      android:textColor="@android:color/black" 
      android:gravity="center_horizontal" 
      android:singleLine="true" 
      android:ellipsize="middle"/> 

     <SeekBar 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:id="@+id/seekbar" 
      android:max="100" 
      android:paddingBottom="10dip"/> 

     <LinearLayout 
      android:orientation="horizontal" 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:gravity="center" 
      android:background="@android:drawable/screen_background_light"> 

      <ImageButton 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:id="@+id/prev" 
       android:src="@android:drawable/ic_media_previous"/> 

      <ImageButton 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:id="@+id/play" 
       android:src="@android:drawable/ic_media_play"/> 

      <ImageButton 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:id="@+id/next" 
       android:src="@android:drawable/ic_media_next"/> 

     </LinearLayout> 
    </LinearLayout> 

</LinearLayout> 

Answer 1

從reference

ListActivity has a default layout that consists of a single, full-screen list in the center of the screen. However, if you desire, you can customize the screen layout by setting your own view layout with setContentView() in onCreate(). To do this, your own view MUST contain a ListView object with the id "@android:id/list" (or list if it's in code)

你會要麼必須在listview'的ID更改爲默認或者你需要使用setContentView(...)

更新：代碼示例

你可以檢查the tutorial of Vogella，這是一個偉大的顯示你一步一步EP。你不能失敗。

更新2可能的解決方法 我最後的猜測是，你的活動來延長ListActivity所以建設者正在尋找一個默認列表作爲佈局。如果是這樣，使用簡單的活動，而不是看看這個問題的答案：How can I implement a ListView without ListActivity? (use only Activity)

好運

Answer 2

當你擴展ListActivity和創建ListView控件，ListView控件的ID應該只是 「表」 不MYLIST。

<ListView 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:id="@+id/list" 
     android:layout_weight="1.0"/>