SwipeRefreshLayout控件使用方法
android.support.v4.widget.SwipeRefreshLayout
界面设计：
<android.support.v4.widget.SwipeRefreshLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
android:id="@+id/swipe">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Random number:"
android:id="@+id/lbl"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/rndNum"
android:layout_toRightOf="@id/lbl"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/lbl"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:text="Swipe to Refresh"
style="@android:style/TextAppearance.Medium"/>
</RelativeLayout>
</ScrollView>
</android.support.v4.widget.SwipeRefreshLayout>
java代码：
final SwipeRefreshLayout swipeView = (SwipeRefreshLayout) findViewById(R.id.swipe);
final TextView rndNum = (TextView) findViewById(R.id.rndNum);
//设置刷新颜色
swipeView.setColorSchemeResources(android.R.color.holo_blue_light);
//设置刷新监听器
swipeView.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
swipeView.setRefreshing(true);
Log.d("Swipe", "Refreshing Number");
//Handler更新界面，延时3000毫秒
( new Handler()).postDelayed(new Runnable() {
@Override
public void run() {
//设置刷新结束
swipeView.setRefreshing(false);
double f = Math.random();
rndNum.setText(String.valueOf(f));
}
}, 3000);
}
});实现效果：
