Android实现 ScrollView + ListView无滚动条滚动

Android实现 ScrollView+ListView无滚动条滚动，即ListView的数据会全部显示完，但Listview无滚动条。

核心代码如下：

1. NoScrollListView.java

[java]
view plaincopy

/***
* 自定义ListView子类，继承ListView
* @author Administrator
*
*/
public class NoScrollListView extends ListView {

public NoScrollListView(Context context) {
super(context);
}

public NoScrollListView(Context context, AttributeSet attrs) {
super(context, attrs);
}

public NoScrollListView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}

@Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);
}

}

2. res > layout > activity_main.xml

[html]
view plaincopy

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/ScrollView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#FFF4F4F4"
android:scrollbars="vertical" >

<LinearLayout
android:id="@+id/LinearLayout"
android:gravity="center_horizontal"
android:background="#FFF4F4F4"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="2dp"
android:layout_marginTop="20dp"
android:text="This's a listView..." />

<!--原： <ListView> -->
<com.example.listviewdemo.NoScrollListView
android:id="@+id/listView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:dividerHeight="0.0dip"
android:fadingEdge="none"
android:cacheColorHint="#FFF4F4F4"/>

</LinearLayout>

</ScrollView>

这里注意：原来的<ListView 改为<com.example.listviewdemo.NoScrollListView 。

3.MainActivity

[java]
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private String[] nameList = {"Miley Cyruc","Alice Keys","Jewel","Dublin","Kelly Clarkson",
"Mariah Carey","Sheen","Adele","Avril Lavigne","Taylor Swift"};

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

ListView lv = (ListView) findViewById(R.id.listView1);

ArrayAdapter adapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, nameList);
lv.setAdapter(adapter);
//lv.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);//选择效果

//listView注册一个元素点击事件监听器
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
Log.d(TAG, "//:"+MainActivity.this.nameList[arg2]);
Toast.makeText(MainActivity.this, "Hey, "+nameList[arg2], Toast.LENGTH_LONG).show();
}
});

}

效果图：