Create three items in the adapter

I have already make navigation drawer with a ImageView and a TextView,and it can run.However, when I want to creat navigation drawer with two ImageViews and a TextView ,it will show the error("Attempt to invoke virtual method") with my second ImageView(the variable's name in my code is "img")

My code like this:

public class MenuListAdapter extends BaseAdapter {

//...

public View getView(int position, View convertView, ViewGroup parent) {
    View v = convertView;

    TextView Title = null;
    ImageView Icon = null;
    ImageView img = null;

    if (v == null) {

        LayoutInflater inflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        v = inflater.inflate(R.layout.drawer, parent, false);

        // Locate the TextViews in drawer_list_item.xml
        Title = (TextView) convertView.findViewById(R.id.title);

        // Locate the ImageView in drawer_list_item.xml
        Icon = (ImageView) convertView.findViewById(R.id.icon);

        // Locate the ImageView in drawer_list_item.xml
        img = (ImageView) convertView.findViewById(R.id.img);

    }

    Title.setText(mTitle[position]);

    Icon.setImageResource(mIcon[position]);
    img.setImageResource(mimg[position]);

    return v;
}

this is my logcat:

09-16 22:25:38.458: E/AndroidRuntime(14966): FATAL EXCEPTION: main

09-16 22:25:38.458: E/AndroidRuntime(14966): java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.view.View.findViewById(int)' on a null object reference 09-16 22:25:38.458: E/AndroidRuntime(14966): at com.test.adapter.MenuListAdapter.getView(MenuListAdapter.java:84) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.widget.AbsListView.obtainView(AbsListView.java:2344) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.widget.ListView.makeAndAddView(ListView.java:1864) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.widget.ListView.fillDown(ListView.java:698) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.widget.ListView.fillFromTop(ListView.java:759) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.widget.ListView.layoutChildren(ListView.java:1673) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.widget.AbsListView.onLayout(AbsListView.java:2148) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.View.layout(View.java:15686) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.ViewGroup.layout(ViewGroup.java:4967) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:914) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.View.layout(View.java:15686) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.ViewGroup.layout(ViewGroup.java:4967) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.widget.FrameLayout.onLayout(FrameLayout.java:508) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.View.layout(View.java:15686) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.ViewGroup.layout(ViewGroup.java:4967) 09-16 22:25:38.458: E/AndroidRuntime(14966): at com.android.internal.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:494) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.View.layout(View.java:15686) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.ViewGroup.layout(ViewGroup.java:4967) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.widget.FrameLayout.onLayout(FrameLayout.java:508) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.View.layout(View.java:15686) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.ViewGroup.layout(ViewGroup.java:4967) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2076) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1833) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1058) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5796) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.Choreographer.doCallbacks(Choreographer.java:580) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.Choreographer.doFrame(Choreographer.java:550) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.os.Handler.handleCallback(Handler.java:739) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.os.Handler.dispatchMessage(Handler.java:95) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.os.Looper.loop(Looper.java:211) 09-16 22:25:38.458: E/AndroidRuntime(14966): at android.app.ActivityThread.main(ActivityThread.java:5333) 09-16 22:25:38.458: E/AndroidRuntime(14966): at java.lang.reflect.Method.invoke(Native Method) 09-16 22:25:38.458: E/AndroidRuntime(14966): at java.lang.reflect.Method.invoke(Method.java:372) 09-16 22:25:38.458: E/AndroidRuntime(14966): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1016) 09-16 22:25:38.458: E/AndroidRuntime(14966): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:811)

you assigned the inflated view to v, but you are using convertView to look for the inflated views widget. Get rid of v and use just convertView

public View getView(int position, View convertView, ViewGroup parent) {

    if (convertView == null) {
        LayoutInflater inflater = (LayoutInflater) context
              .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
       convertView = inflater.inflate(R.layout.drawer, parent, false);
    }

    // Locate the TextViews in drawer_list_item.xml
    TextView title = (TextView) convertView.findViewById(R.id.title);
    // Locate the ImageView in drawer_list_item.xml
    ImageView icon = (ImageView) convertView.findViewById(R.id.icon);
    // Locate the ImageView in drawer_list_item.xml
    ImageView img = (ImageView) convertView.findViewById(R.id.img);

    title.setText(mTitle[position]);
    icon.setImageResource(mIcon[position]);
    img.setImageResource(mimg[position]);

   return convertView;
}