高级控件 上（二）

3.拖动条(SeekBar)
sb1.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

@Override
public void onStopTrackingTouch(SeekBar seekBar) {
tv1.setText("---结束拖动---");
}

@Override
public void onStartTrackingTouch(SeekBar seekBar) {
tv1.setText("---开始拖动---");
}

@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
tv1.setText("---拖动进度---"+progress);
}
});

4.滚动视图(ScrollView)
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="100dp"
>

<LinearLayout
android:layout_width="wrap_content" 
android:layout_height="wrap_content"
android:orientation="vertical"
>

<TextView 
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:text="@string/hello"
android:layout_marginTop="50dp"
/>

<TextView 
android:layout_marginTop="50dp"
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:text="aaaa"
/>

</LinearLayout>

</ScrollView>

5.列表视图（ListView）
<ListView
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:background="#CD950C"
android:entries="@array/citys"
></ListView>

6.SimpleAdapter类设置列表视图
lv1=(ListView) findViewById(R.id.lv101);
List<Map<String, Object>> list=new ArrayList<Map<String,Object>>();

Map<String, Object> map=new HashMap<String, Object>();
map.put("img", R.drawable.icon);
map.put("txt", "bbbb");
list.add(map);

Map<String, Object> map1=new HashMap<String, Object>();
map1.put("img", R.drawable.icon);
map1.put("txt", "aaaa");
list.add(map1);

SimpleAdapter adapter=new SimpleAdapter(this, list,
R.layout.list_item, 
new String []{"img","txt"}, 
new int [] {R.id.iv99,R.id.tv022});
lv1.setAdapter(adapter);