對話框中的自定義列表視圖

我試圖在Dialog中添加自定義ListView。我的代碼如下：對話框中的自定義列表視圖

dialog = new Dialog(MyWallet.this); 

dialog.setContentView(R.layout.emergency_contacts); 
dialog.setTitle("Emergency Contacts"); 
dialog.show(); 

mAdapter.addInfo("Name"); 
ListView lv = (ListView) dialog.findViewById(android.R.id.list); 
if (lv != null) { 
    lv.setAdapter(mAdapter); 
}

，然後我的自定義Adapter：

private class MyCustomAdapter extends BaseAdapter { 
    private static final int TYPE_INFO = 1; 
    private static final int TYPE_MAX_COUNT = 1; 
    private LayoutInflater mInflater; 
    private int noteFull = 0; 

    public MyCustomAdapter() { 
     mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    } 


    public void addInfo(final String info) { 
     mInfo.add(info); 
     notifyDataSetChanged(); 
    } 

    @Override 
    public int getCount() { 
     return mInfo.size(); 
    } 

    @Override 
    public String getItem(int position) { 
     return mInfo.get(position); 
    } 

    @Override 
    public long getItemId(int position) { 
     return position; 
    } 

    @Override 
    public int getItemViewType(int position) { 
      return TYPE_INFO; 
    } 

    @Override 
    public int getViewTypeCount() { 
     return TYPE_MAX_COUNT; 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     System.out.println("getView " + position + " " + convertView); 
     ViewHolder holder = null; 
     int type = getItemViewType(position); 
     if (convertView == null) { 
      holder = new ViewHolder(); 
      switch (type) { 
       case TYPE_INFO: 
        convertView = mInflater.inflate(R.layout.emergency_contacts_list, null); 
        holder.name = (TextView)convertView.findViewById(R.id.name); 
        holder.name.setText(mInfo.get(position)); 
        break; 
      } 
      convertView.setTag(holder); 
     } else { 
      holder = (ViewHolder)convertView.getTag(); 
      switch(type) { 
       case TYPE_INFO: 
        convertView = mInflater.inflate(R.layout.emergency_contacts_list, null); 
        holder.name = (TextView)convertView.findViewById(R.id.name); 
        holder.name.setText(mInfo.get(position)); 
        break; 
      } 
     } 
     return convertView; 
    } 

} 

public static class ViewHolder { 
    public TextView name; 
    public TextView phoneNumber; 
    public TextView emailAddress; 
}

代碼崩潰（與NullPointerException在

holder.name =（TextView的）convertView.findViewById（ R.id.name）;

我在猜，因爲convertView不是正確的看法，我該如何設置它的權利View？

編輯：Code for emergency_contacts_list：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
      android:layout_width="fill_parent" 
      android:layout_height="fill_parent" 
      android:orientation="horizontal"> 
<LinearLayout 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"> 
      <LinearLayout 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:orientation="vertical" 
      android:gravity="left"> 
      <TextView 
       android:id="@+id/name" 
       android:layout_height="wrap_content" 
       android:layout_width="wrap_content" 
       android:gravity="left" 
       android:text="Name"> 
      </TextView> 
      <TextView 
       android:id="@+id/phone" 
       android:layout_height="wrap_content" 
       android:layout_width="wrap_content" 
       android:gravity="left" 
       android:text="Phone Number"> 
      </TextView> 
      <TextView 
       android:id="@+id/email" 
       android:layout_height="wrap_content" 
       android:layout_width="wrap_content" 
       android:gravity="left" 
       android:text="Email Address"> 
      </TextView> 
      </LinearLayout> 
      <LinearLayout 
       android:layout_width="fill_parent" 
       android:gravity="right|center_vertical" 
       android:layout_height="match_parent" 
       android:orientation="horizontal"> 
      <Button 
       android:id="@+id/call" 
       android:layout_height="35px" 
       android:layout_width="50px" 
       android:background="@drawable/custom_button" 
       android:layout_margin="3px" 
       android:text="Call"> 
      </Button> 
      </LinearLayout> 
    </LinearLayout> 
</LinearLayout>

編輯2：全logcat：

03-19 15:39:43.157: ERROR/AndroidRuntime(23371): FATAL EXCEPTION: main 
    java.lang.NullPointerException 
    at com.intellimec.MyWallet$MyCustomAdapter.getView(MyWallet.java:207) 
    at android.widget.AbsListView.obtainView(AbsListView.java:1428) 
    at android.widget.ListView.measureHeightOfChildren(ListView.java:1265) 
    at android.widget.ListView.onMeasure(ListView.java:1128) 
    at android.view.View.measure(View.java:8524) 
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3257) 
    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1017) 
    at android.widget.LinearLayout.measureVertical(LinearLayout.java:386) 
    at android.widget.LinearLayout.onMeasure(LinearLayout.java:309) 
    at android.view.View.measure(View.java:8524) 
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3257) 
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 
    at android.view.View.measure(View.java:8524) 
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3257) 
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 
    at android.view.View.measure(View.java:8524) 
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3257) 
    at android.widget.LinearLayout.forceUniformWidth(LinearLayout.java:594) 
    at android.widget.LinearLayout.measureVertical(LinearLayout.java:574) 
    at android.widget.LinearLayout.onMeasure(LinearLayout.java:309) 
    at android.view.View.measure(View.java:8524) 
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3257) 
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 
    at android.view.View.measure(View.java:8524) 
    at android.view.ViewRoot.performTraversals(ViewRoot.java:915) 
    at android.view.ViewRoot.handleMessage(ViewRoot.java:1991) 
    at android.os.Handler.dispatchMessage(Handler.java:99) 
    at android.os.Looper.loop(Looper.java:150) 
    at android.app.ActivityThread.main(ActivityThread.java:4293) 
    at java.lang.reflect.Method.invokeNative(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:507) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607) 
    at dalvik.system.NativeStart.main(Native Method)

來源

2012-03-19 user1154920

確實R.layout.emergency_contacts_list包含R.id.name？ – Blackbelt 2012-03-19 19:38:02

是的，它增加了編輯顯示emergency_contacts_list.xml – user1154920 2012-03-19 19:43:28

把你的完整logcat – 2012-03-19 19:44:49

釷NullPointerException出現的，因爲當你得到一個convertView，是不是在getView()方法，而不是使用您充氣空（回收的一個）一個新的View到位。 getView()方法應該是：

//... 
else { 
      holder = (ViewHolder)convertView.getTag();  
        holder.name.setText(mInfo.get(position)); 
} 
//..

來源

2012-03-19 19:50:26 Luksprog

這解決了我的問題 - 非常感謝！ – user1154920 2012-03-19 19:54:40

定義你的內部MyCustomAdapter.This靜態類是you.For例

public class MyCustomAdapter extends BaseAdapter { 

public static class ViewHolder { 
public TextView name; 
public TextView phoneNumber; 
public TextView emailAddress; 
} 

}

來源

2012-03-19 19:38:51

這沒有改變任何東西，仍然錯誤在同一行 – user1154920 2012-03-19 19:43:43

你必須使MyCustomAdapter類的構造函數。欲瞭解更多信息，請查看此鏈接http://www.vogella.de/articles/AndroidListView/article.html – 2012-03-19 19:48:24

工作以下是您應該如何進行佈局充氣的示例代碼[R

LayoutInflater li = (LayoutInflater)this.getSystemService(LAYOUT_INFLATER_SERVICE); 
    View vDialogTextSize = li.inflate(R.layout.options_dialog_textsize, (ViewGroup) findViewById(R.id.Custom_Size_Dialog));

所有信息已經得出這個網站Dialogs.

來源

2012-03-19 19:43:29 sdfwer

你能解釋這一點嗎？我的對話框沒有在我的xml文件中定義，所以（ViewGroup）findViewById（R.id.dialog）將不起作用。 – user1154920 2012-03-19 19:51:57

單擊對話框鏈接去創建一個alertdialog標題並從那裏讀取。如果你沒有使用自定義對話框。它應該給你足夠的是和否的答案。如果你想要使用自定義對話框來創建它， – sdfwer 2012-03-19 20:00:25

對話框中的自定義列表視圖

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