Android之水滴落下的下拉刷新
非常逼真的水滴落下的下拉刷新。你可以配合ListView一起使用。
项目library下载地址：
源码下载地址
我的demo下载地址(包含异步):
水滴落下下拉刷新demo
效果图：
主要是用到一个库：WaveSwipeRefreshLayout
<span style="font-size:18px;"> <jp.co.recruit_lifestyle.android.widget.WaveSwipeRefreshLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/main_swipe"
android:layout_below="@+id/toolbar"
>
<ListView
android:id="@+id/main_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</jp.co.recruit_lifestyle.android.widget.WaveSwipeRefreshLayout></span>
MainActivuty:
<span style="font-size:18px;">package jp.co.recruit_lifestyle.sample;
import android.graphics.Color;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import jp.co.recruit_lifestyle.android.widget.WaveSwipeRefreshLayout;
public class MainActivity extends AppCompatActivity implements WaveSwipeRefreshLayout.OnRefreshListener {
private Myadapter myadapter;
private String str;
private ListView mListview;
private WaveSwipeRefreshLayout mWaveSwipeRefreshLayout;
private LinkedList<String> list=new LinkedList<String>();
@Override
protected void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
setSampleData();
}
private void initView() {
mWaveSwipeRefreshLayout = (WaveSwipeRefreshLayout) findViewById(R.id.main_swipe);
mWaveSwipeRefreshLayout.setColorSchemeColors(Color.WHITE, Color.WHITE);
mWaveSwipeRefreshLayout.setOnRefreshListener(this);
mWaveSwipeRefreshLayout.setWaveColor(Color.DKGRAY);
//mWaveSwipeRefreshLayout.setMaxDropHeight(1300);
mListview = (ListView) findViewById(R.id.main_list);
}
private void setSampleData() {
for (int i = 0; i < 60; i++) {
list.add("你好" );
}
myadapter=new Myadapter(list);
mListview.setAdapter(myadapter);
}
class Myadapter extends BaseAdapter{
List<String> list=new ArrayList<String>();
public Myadapter (List<String> list){
this.list=list;
}
@Override
public int getCount() {
return list.size();
}
@Override
public Object getItem(int i) {
return list.get(i);
}
@Override
public long getItemId(int i) {
return i;
}
@Override
public View getView(int i, View converView, ViewGroup viewGroup) {
View view;
if (converView==null){
view=View.inflate(MainActivity.this,R.layout.item,null);
}else {
view=converView;
}
TextView tvitem= (TextView) view.findViewById(R.id.tvitem);
tvitem.setText(list.get(i));
return view;
}
}
private void refresh(){
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
// 更新が終了したらインジケータ非表示
new Task().execute();
mWaveSwipeRefreshLayout.setRefreshing(false);
}
}, 3000);
}
class Task extends AsyncTask<Void, Void,String>{
@Override
protected String doInBackground(Void... voids) {
try {
Thread.sleep(500);
for (int a=0;a<10;a++){
str="我是被添加的";
}
} catch (InterruptedException e) {
e.printStackTrace();
}
return str;
}
@Override
protected void onPostExecute(String stringlist) {
list.addFirst(stringlist);
myadapter.notifyDataSetChanged();
mWaveSwipeRefreshLayout.setRefreshing(false);
super.onPostExecute(stringlist);
}
}
@Override
protected void onResume() {
mWaveSwipeRefreshLayout.setRefreshing(true);
refresh();
super.onResume();
}
@Override
public void onRefresh() {
refresh();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
mWaveSwipeRefreshLayout.setRefreshing(true);
refresh();
return true;
}
return super.onOptionsItemSelected(item);
}
}
</span>
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