Android提供的ListFragment虽然存在一些适配器,但是往往不能满足我们开发的需要,此时我们就要使用自定义的Adapter
MainActivity.java:
public class MainActivity extends FragmentActivity { private Button button; private FragmentManager manager; private FragmentTransaction transaction; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button = (Button) this.findViewById(R.id.button1); manager = getSupportFragmentManager(); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { transaction = manager.beginTransaction(); ArticleListFragment fragment = new ArticleListFragment(); transaction.add(R.id.right, fragment, "fragment"); transaction.commit(); } }); } }
public class ArticleListFragment extends ListFragment { /* 定义适配器 */ private MyAdapter adapter; public ArticleListFragment() { // TODO Auto-generated constructor stub } /* 创建数据源 */ public List<String> getData() { List<String> list = new ArrayList<String>(); for (int i = 0; i < 20; i++) { list.add("廖泽民" + i); } return list; } /* 这个方法适合初始化数据 */ public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); /*创建adapter*/ adapter = new MyAdapter(); /*为adapter绑定数据*/ adapter.bindData(getData()); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { /* 动态加载布局 */ View view = inflater.inflate(R.layout.article, null); /** * 设置适配器。 注意:为什么不在onCreate方法中设置适配器,是因为我们使用了自定义的视图,也就是 说我们要加载完自定义的视图以后才可以设置适配器,如果在onCreate方法中就设置的话, 必然会出错 */ this.setListAdapter(adapter); return view; } @Override public void onPause() { // TODO Auto-generated method stub super.onPause(); } /** * ListFragment提供了一个方便的方法onListItemClick */ @Override public void onListItemClick(ListView l, View v, int position, long id) { super.onListItemClick(l, v, position, id); String item = adapter.getItem(position).toString(); /* 打印 */ Toast.makeText(getActivity(), "-->>" + item, 1).show(); } /** * 自定义适配器 * * @author Liao * */ class MyAdapter extends BaseAdapter { /* 数据集合 */ private List<String> list; /** * 绑定数据 * * @param list */ public void bindData(List<String> list) { this.list = list; } @Override public int getCount() { return list.size(); } @Override public Object getItem(int position) { return list.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { View view = null; if (convertView == null) { view = LayoutInflater.from(getActivity()).inflate(R.layout.item, null); } else { view = convertView; } /* 从动态布局中获取控件 */ TextView textView = (TextView) view.findViewById(R.id.textView1); /* 设置TextView的值 */ textView.setText(list.get(position).toString()); return view; } } }
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal" tools:context=".MainActivity" > <LinearLayout android:id="@+id/left" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:orientation="vertical" > <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="show" /> </LinearLayout> <LinearLayout android:id="@+id/right" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_weight="2" android:background="#CCCCCC" android:orientation="vertical" > </LinearLayout> </LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingLeft="8dp"
android:paddingRight="8dp" >
<ListView
android:id="@id/android:list"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="#00FF00"
android:drawSelectorOnTop="false" />
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="20sp" /> </LinearLayout>
demo结果展示: