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Android v4包中的 SwipeRefreshLayout 官方的下拉刷新组件
SwipeRefreshLayout在v4包下,对应的v4 Demo中也有相应的例子。如果没有请下载最新support-v4
SwipeRefreshLayout 只能有一个直接子View,可能是一个ListView或一个Layout或其他需要刷新的组件。
setOnRefreshListener 用于监听刷新的动作。SwipeRefreshLayout 下拉,就会有刷新的效果出来,触发该监听。
如果需要一个刷新的动画,setRefreshing(true), 停: setRefreshing(false)
如果要禁用刷新动画和手势响应,ssetEnable(false), 恢复setEnable(true)
Demo如下:
[java] view plaincopyprint?
- public class SwipeRefreshLayoutActivity extends Activity implements OnRefreshListener {
- public static final String[] TITLES =
- {
- "Henry IV (1)",
- "Henry V",
- "Henry VIII",
- "Richard II",
- "Richard III",
- "Merchant of Venice",
- "Othello",
- "King Lear",
- "Henry IV (1)",
- "Henry V",
- "Henry VIII",
- "Richard II",
- "Richard III",
- "Merchant of Venice",
- "Othello",
- "King Lear",
- "Henry IV (1)",
- "Henry V",
- "Henry VIII",
- "Richard II",
- "Richard III",
- "Merchant of Venice",
- "Othello",
- "King Lear",
- "Henry IV (1)",
- "Henry V",
- "Henry VIII",
- "Richard II",
- "Richard III",
- "Merchant of Venice",
- "Othello",
- "King Lear"
- };
- // Try a SUPER quick refresh to make sure we don‘t get extra refreshes
- // while the user‘s finger is still down.
- private static final boolean SUPER_QUICK_REFRESH = false;
- private View mContent;
- private SwipeRefreshLayout mSwipeRefreshWidget;
- private ListView mList;
- private Handler mHandler = new Handler();
- private final Runnable mRefreshDone = new Runnable() {
- @Override
- public void run() {
- mSwipeRefreshWidget.setRefreshing(false);
- }
- };
- @Override
- public void onCreate(Bundle bundle) {
- super.onCreate(bundle);
- setContentView(R.layout.swipe_refresh_widget_sample);
- mSwipeRefreshWidget = (SwipeRefreshLayout) findViewById(R.id.swipe_refresh_widget);
- mSwipeRefreshWidget.setColorScheme(R.color.color1, R.color.color2, R.color.color3,
- R.color.color4);
- mList = (ListView) findViewById(R.id.content);
- ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this,
- android.R.layout.simple_list_item_1, android.R.id.text1, TITLES);
- mList.setAdapter(arrayAdapter);
- mSwipeRefreshWidget.setOnRefreshListener(this);
- mSwipeRefreshWidget.setProgressViewEndTarget(false, 8);
- }
- @Override
- public void onRefresh() {
- refresh();
- }
- @Override
- public boolean onCreateOptionsMenu(Menu menu) {
- MenuInflater inflater = getMenuInflater();
- inflater.inflate(R.menu.swipe_refresh_menu, menu);
- return true;
- }
- /**
- * Click handler for the menu item to force a refresh.
- */
- @Override
- public boolean onOptionsItemSelected(MenuItem item) {
- final int id = item.getItemId();
- switch(id) {
- case R.id.force_refresh:
- mSwipeRefreshWidget.setRefreshing(true);
- refresh();
- return true;
- }
- return false;
- }
- private void refresh() {
- mHandler.removeCallbacks(mRefreshDone);
- mHandler.postDelayed(mRefreshDone, 1000);
- }
- }
swipe_refresh_widget_sample.xml
[html] view plaincopyprint?
- <android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:id="@+id/swipe_refresh_widget"
- android:layout_width="match_parent"
- android:layout_height="match_parent" >
- <!-- some full screen pullable view that will be the offsetable content -->
- <ListView
- android:id="@+id/content"
- android:layout_width="match_parent"
- android:layout_height="match_parent" />
- </android.support.v4.widget.SwipeRefreshLayout>
Android v4包中的 SwipeRefreshLayout 官方的下拉刷新组件
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