使用android自带的SwipeRefreshLayout实现下拉刷新
16lz
2021-01-23
效果图:
MainActivity.java
<span style="font-family:Arial;">package com.hnpolice.luoxiaoke.swiperefreshlayout;import android.os.Bundle;import android.os.Handler;import android.support.v4.widget.SwipeRefreshLayout;import android.support.v7.app.AppCompatActivity;import android.widget.ArrayAdapter;import android.widget.ListView;import java.util.ArrayList;import java.util.List;import butterknife.ButterKnife;import butterknife.InjectView;public class MainActivity extends AppCompatActivity implements SwipeRefreshLayout.OnRefreshListener { @InjectView(R.id.list_view) ListView listView; @InjectView(R.id.refresh_layout) SwipeRefreshLayout refreshLayout; //下拉刷新状态 private static final int REFRESH_COMPLETE = 110; private List<String> datas = new ArrayList<>(); private ArrayAdapter adapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ButterKnife.inject(this); // Set the listener to be notified when a refresh is triggered via the swipe gesture. refreshLayout.setOnRefreshListener(this); // Set the colors used in the progress animation. refreshLayout.setColorSchemeResources(R.color.color_blue, R.color.color_green, R.color.color_red); for (int i = 0; i < 5; i++) { datas.add("item" + i); } adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, datas); listView.setAdapter(adapter); } @Override public void onRefresh() { //2000 : 2s后执行 mHandler.sendEmptyMessageDelayed(REFRESH_COMPLETE, 2000); } private Handler mHandler = new Handler() { public void handleMessage(android.os.Message msg) { switch (msg.what) { case REFRESH_COMPLETE: datas.add("added"); adapter.notifyDataSetChanged(); refreshLayout.setRefreshing(false); break; } } };}</span><span style="font-family:Consolas;"></span>activity_main.xml
<?xml version="1.0" encoding="utf-8"?><android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/refresh_layout" android:layout_width="match_parent" android:layout_height="match_parent"> <ListView android:id="@+id/list_view" android:layout_width="match_parent" android:layout_height="match_parent" /></android.support.v4.widget.SwipeRefreshLayout>colors.xml
<?xml version="1.0" encoding="utf-8"?><resources> <color name="colorPrimary">#3F51B5</color> <color name="colorPrimaryDark">#303F9F</color> <color name="colorAccent">#FF4081</color> <color name="color_red">#ff0000</color> <color name="color_green">#00ff00</color> <color name="color_blue">#0000ff</color></resources>工程下载地址:http://download.csdn.net/detail/lxk_1993/9375711
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