activity_mainxml
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="/apk/res/android"xmlns:app="/apk/res-auto"xmlns:tools="/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity"><android.support.v4.widget.SwipeRefreshLayoutandroid:id="@+id/swipe_refresh"android:layout_width="match_parent"android:layout_height="match_parent"><ListViewandroid:id="@+id/lv_activity"android:layout_width="match_parent"android:layout_height="match_parent"></ListView></android.support.v4.widget.SwipeRefreshLayout></LinearLayout>
MainActivity.java
public class MainActivity extends AppCompatActivity {@RequiresApi(api = Build.VERSION_CODES.M)@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);final SwipeRefreshLayout swipeRefresh = (SwipeRefreshLayout) findViewById(R.id.swipe_refresh);swipeRefresh.setColorSchemeColors(getResources().getColor(R.color.colorAccent, null));swipeRefresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {@Overridepublic void onRefresh() {Toast.makeText(getApplicationContext(), "下拉刷新了！", Toast.LENGTH_SHORT).show();new Thread(new Runnable() {@Overridepublic void run() {try {Thread.sleep(2000);} catch (Exception e) {e.printStackTrace();}runOnUiThread(new Runnable() {@Overridepublic void run() {//更新数据swipeRefresh.setRefreshing(false);}});}}).start();}});}}
