的Android CustomAdapter - 变量必须提供尺寸表达式或阵列

Question

我创建一个定制ArrayAdapter按照this，但是我在这条线收到错误：

Drawer drawer_data[] = new Drawer[] {

该Variable must provide either dimension expressions or an array

Drawer.java

public class Drawer { 
    public int mIcon; 
    public String mText; 

    public Drawer() { 
     super(); 
    } 

    public Drawer(int mIcon, String mTitle) { 
     super(); 
     this.mIcon = mIcon; 
     this.mText = mTitle; 
    } 
} 

DrawerAdapter.java

public class DrawerAdapter extends ArrayAdapter<Drawer> { 

    Context context; 
    int layoutResourceId; 
    Drawer data[] = null; 

    public Drawer_CustomAdapter(Context context, int layoutResourceId, Drawer[] data) { 
     super(context, layoutResourceId, data); 
     this.layoutResourceId = layoutResourceId; 
     this.context = context; 
     this.data = data; 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     DrawerHolder holder = null; 

     if (convertView == null) { 
      LayoutInflater inflater = (LayoutInflater) ((Activity)context).getLayoutInflater(); 

      convertView = inflater.inflate(layoutResourceId, parent, false); 
      holder = new DrawerHolder(); 
      holder.mIcon = (ImageView) convertView.findViewById(R.id.drawer_icon); 
      holder.mText = (TextView) convertView.findViewById(R.id.drawer_text); 
      convertView.setTag(holder); 
     } else { 
      holder = (DrawerHolder) convertView.getTag(); 
     } 

     Drawer drawer = data[position]; 
     holder.mIcon.setImageResource(drawer.mIcon); 
     holder.mText.setText(drawer.mText); 

     return convertView; 
    } 

    static class DrawerHolder { 
     ImageView mIcon; 
     TextView mText; 
    } 
} 

活动

Drawer drawer_data[] = new Drawer[] { // <<<< ERROR 
      for(int i=0; i<mDrawerItems; i++) { 
       new Drawer(mDrawerIcons[i],mDrawerItems[i]); 
      } 
    }; 

    DrawerAdaper adapter = new DrawerAdapter(this,R.layout.drawer_list_item,drawer_data); 

    mDrawerList.setAdapter(adapter); 

我看着this，但我不知道如何修改我的代码。

新的错误：NullPointerEception堆栈跟踪：

08-31 14:05:39.604: E/AndroidRuntime(14724): FATAL EXCEPTION: main 
08-31 14:05:39.604: E/AndroidRuntime(14724): java.lang.NullPointerException 
08-31 14:05:39.604: E/AndroidRuntime(14724): at com.TVGenius.DrawerAdapter.getView(DrawerAdapter.java:42) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.widget.AbsListView.obtainView(AbsListView.java:2461) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.widget.ListView.makeAndAddView(ListView.java:1775) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.widget.ListView.fillDown(ListView.java:678) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.widget.ListView.fillFromTop(ListView.java:739) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.widget.ListView.layoutChildren(ListView.java:1628) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.widget.AbsListView.onLayout(AbsListView.java:2296) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.View.layout(View.java:14055) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.ViewGroup.layout(ViewGroup.java:4604) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:672) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.View.layout(View.java:14055) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.ViewGroup.layout(ViewGroup.java:4604) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.View.layout(View.java:14055) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.ViewGroup.layout(ViewGroup.java:4604) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1655) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1513) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.widget.LinearLayout.onLayout(LinearLayout.java:1426) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.View.layout(View.java:14055) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.ViewGroup.layout(ViewGroup.java:4604) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.View.layout(View.java:14055) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.ViewGroup.layout(ViewGroup.java:4604) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1992) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1813) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1112) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4472) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.Choreographer.doCallbacks(Choreographer.java:555) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.Choreographer.doFrame(Choreographer.java:525) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.os.Handler.handleCallback(Handler.java:615) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.os.Handler.dispatchMessage(Handler.java:92) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.os.Looper.loop(Looper.java:137) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at android.app.ActivityThread.main(ActivityThread.java:4898) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at java.lang.reflect.Method.invokeNative(Native Method) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at java.lang.reflect.Method.invoke(Method.java:511) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773) 
08-31 14:05:39.604: E/AndroidRuntime(14724): at dalvik.system.NativeStart.main(Native Method) 

编辑：线42 - holder.mIcon.setImageResource(drawer.mIcon);

编辑2：

1. 在哪里添加这些setter和getter方法？哪个.java文件？

2. 我在哪里可以拨打drawer.getIcon()。

   public int getIcon() { 
       return this.mIcon; 
   } 
   
   public String getTitle() { 
       return this.mText; 
   } 
   

Answer 1

尝试

Drawer drawer_data[] = new Drawer[mDrawerItems.size()]; 
for(int i = 0; i < mDrawerItems.size(); i++){ 
drawer_data[i] = new Drawer(mDrawerIcons[i],mDrawerItems[i]); 
} 

Answer 2

尝试这种方式

Drawer drawer_data[] = new Drawer[mDrawerItems.length] 

      for(int i=0; i<mDrawerItems.length; i++) { 
       drawer_data[]=new Drawer(mDrawerIcons[i],mDrawerItems[i]); 
      } 


    DrawerAdaper adapter = new DrawerAdapter(this,R.layout.drawer_list_item,drawer_data); 

    mDrawerList.setAdapter(adapter);