Fragment为什么不加载ListView,无法显示listview，，求教

Lou025 2015-04-12 08:52:24

用Fragment实现底部导航栏，想在每个Fragment中加载自定义一个listview，，无法显示，，求教

布局文件：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >

<TextView

        android:id="@+id/fragment1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="第一个fragment"

        android:textAppearance="?android:attr/textAppearanceLarge" />

    <ListView 

        android:id="@+id/lv_test"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:choiceMode="singleChoice"

         android:textAppearance="?android:attr/textAppearanceLarge" 

        ></ListView>



</LinearLayout>

JAVA实现代码：

public class TabFragmentTwo extends Fragment {



	private Context context;

		int[] drawableIds={R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher,

				R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher,

				R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher,

				R.drawable.ic_launcher};

    	int[] msgIds={R.string.test1,R.string.test2,R.string.test3,R.string.test4_1,R.string.test4_2,

    			R.string.test5,R.string.test6_1,R.string.test6_2,R.string.test6_3,R.string.test7,R.string.test8,R.string.test9_1,R.string.test9_2};

	@Override

	public void onCreate(Bundle savedInstanceState) {

		// TODO Auto-generated method stub

		super.onCreate(savedInstanceState);

		

	}

	@Override

	public View onCreateView(LayoutInflater inflater, ViewGroup container,

			Bundle savedInstanceState) {

		View viewtwo = inflater.inflate(R.layout.tabfragmenttwo, container, false);

		ListView lv = (ListView) viewtwo.findViewById(R.id.lv_test);

		

		BaseAdapter ba =new BaseAdapter() {

			

			@Override

			public View getView(int arg0, View arg1, ViewGroup arg2) {

				LinearLayout ll = new LinearLayout(context);

				

				ll.setOrientation(LinearLayout.HORIZONTAL);

				

				ll.setPadding(5, 5, 5, 5);

				ImageView iv = new ImageView(context);

				iv.setImageDrawable(getResources().getDrawable(drawableIds[arg0]));

				iv.setScaleType(ImageView.ScaleType.FIT_XY);

				iv.setLayoutParams(new Gallery.LayoutParams(100, 98));

				ll.addView(iv);

				

				TextView tv = new TextView(context);

				tv.setText(getResources().getText(msgIds[arg0]));

				tv.setTextSize(24);

				tv.setTextColor(Color.BLACK);

				tv.setPadding(5, 5, 5, 5);

				tv.setGravity(Gravity.LEFT);

				ll.addView(tv);

				return ll;

			}

			

			@Override

			public long getItemId(int agr0) {	return 0;}

			@Override

			public Object getItem(int arg0) {return null;}

			@Override

			public int getCount() {	return 13;}

		};

		lv.setAdapter(ba);

		return viewtwo;

	}



}