ScrollView中的ListView只顯示一條數據的解決方法

在ScrollView中嵌套ListView，會出現ListView只顯示一條數據的現象，解決方法有兩種，如下：

1. 在Activity中list view.setAdapter以後執行如下方法

public class MainActivity extends Activity {   
    private ListView listView;   
    @Override   
    protected void onCreate(Bundle savedInstanceState) {   
        super.onCreate(savedInstanceState);   
        setContentView(R.layout.activity_main);   
        listView = (ListView) findViewById(R.id.listView1);   
        String[] adapterData = new String[] { "Afghanistan", "Albania",… … "Bosnia"};   
        listView.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,adapterData));   
        setListViewHeightBasedOnChildren(listView);   
    }   
    public void setListViewHeightBasedOnChildren(ListView listView) {   
        // 獲取ListView對應的Adapter   
        ListAdapter listAdapter = listView.getAdapter();   
        if (listAdapter == null) {   
            return;   
        }   
   
        int totalHeight = 0;   
        for (int i = 0, len = listAdapter.getCount(); i < len; i++) {   
            // listAdapter.getCount()返回數據項的數目   
            View listItem = listAdapter.getView(i, null, listView);   
            // 計算子項View 的寬高   
            listItem.measure(0, 0);    
            // 統計所有子項的總高度   
            totalHeight += listItem.getMeasuredHeight();    
        }   
   
        ViewGroup.LayoutParams params = listView.getLayoutParams();   
        params.height = totalHeight+ (listView.getDividerHeight() * (listAdapter.getCount() - 1));   
        // listView.getDividerHeight()獲取子項間分隔符佔用的高度   
        // params.height最後得到整個ListView完整顯示需要的高度   
        listView.setLayoutParams(params);   
    }   
}   

2. 重寫ListView控件，重寫onMeasure方法

@Override  
public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {              
    // Create an adapter to point at this cursor  
    SampleCursorAdapter adapter = new SampleCursorAdapter(getActivity(), (SampleCursor)cursor);  
    lv.setAdapter(adapter);  
    Utils.setListViewHeightBasedOnChildren(lv);  
}<span style="font-family: Arial, Helvetica, sans-serif;">  </span>