ScrollView和Listview结合使用

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拖动前
拖动后
- 自定义布局

public class MyListview extends ListView{    public MyListview(Context context, AttributeSet attrs) {        super(context, attrs);        // TODO Auto-generated constructor stub    }    public boolean dispatchTouchEvent(MotionEvent ev) {           getParent().requestDisallowInterceptTouchEvent(true);           boolean b = super.dispatchTouchEvent(ev);        return b;        }  }

布局中载入

<ScrollView 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"    tools:context="com.yang.sl.MainActivity" >    <LinearLayout         android:layout_width="match_parent"        android:layout_height="match_parent"        android:orientation="vertical"        >        <com.yang.sl.MyListview            android:id="@+id/main_mylistview"            android:layout_width="match_parent"            android:layout_height="wrap_content" />        <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="20dp"        android:layout_marginLeft="10dp"        android:text="黑" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="20dp"        android:layout_marginLeft="20dp"        android:text="黑" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="20dp"        android:layout_marginLeft="30dp"        android:text="黑" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="20dp"        android:layout_marginLeft="40dp"        android:text="黑" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="20dp"        android:layout_marginLeft="50dp"        android:text="黑" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="20dp"        android:layout_marginLeft="60dp"        android:text="黑" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="20dp"        android:layout_marginLeft="10dp"        android:text="红" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="20dp"        android:layout_marginLeft="20dp"        android:text="红" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="20dp"        android:layout_marginLeft="30dp"        android:text="红" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="20dp"        android:layout_marginLeft="40dp"        android:text="红" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="20dp"        android:layout_marginLeft="50dp"        android:text="红" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="20dp"        android:layout_marginLeft="60dp"        android:text="红" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="20dp"        android:layout_marginLeft="70dp"        android:text="红" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="20dp"        android:layout_marginLeft="80dp"        android:text="红" />    </LinearLayout></ScrollView>

效果实现

public class MainActivity extends Activity {    private String item[]={"A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","E","Y","Z"};    private MyListview lv;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        init();        setOnSL(lv);    }    private void init() {        lv = (MyListview) findViewById(R.id.main_mylistview);        ArrayAdapter<String> adapter = new ArrayAdapter<>(this, android.R.layout.simple_expandable_list_item_1, item);        lv.setAdapter(adapter);    }    @SuppressWarnings("deprecation")    private void setOnSL(MyListview listview) {        // TODO Auto-generated method stub        @SuppressWarnings("rawtypes")        ArrayAdapter listAdapter = (ArrayAdapter) listview.getAdapter();        if(listAdapter == null){            return;        }        int toTalHeight = 0;        for (int i = 0; i < listAdapter.getCount(); i++) {            View listItem = listAdapter.getView(i, null, listview);            if(listItem != null){                listItem.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));                listItem.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);                toTalHeight += listItem.getMeasuredHeight();            }        }        LayoutParams params = listview.getLayoutParams();        params.height = toTalHeight + (listview.getDividerHeight() * (listview.getCount() - 1))+listview.getPaddingTop()+listview.getPaddingBottom();        int h=getWindowManager().getDefaultDisplay().getHeight();        if(params.height>h / 2){            params.height = h / 2;        }        listview.setLayoutParams(params);    }}

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