最近项目中需要用到WebView下拉刷新的功能，经过查找资料终于完成了此功能，现在拿出来和大家分享一下。希望对大家有所帮助。
效果如下图：
代码：
activity.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.zq.pullrefreshwebview.MainActivity">
<com.zq.pullrefreshwebview.widget.PtrClassicFrameLayout
android:id="@+id/rotate_header_web_view_frame"
xmlns:cube_ptr="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/white"
cube_ptr:ptr_duration_to_close="200"
cube_ptr:ptr_duration_to_close_header="1000"
cube_ptr:ptr_keep_header_when_refresh="true"
cube_ptr:ptr_pull_to_fresh="false"
cube_ptr:ptr_ratio_of_header_height_to_refresh="1.2"
cube_ptr:ptr_resistance="1.8">
<WebView
android:id="@+id/webview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</com.zq.pullrefreshwebview.widget.PtrClassicFrameLayout>
</RelativeLayout>
Activity.Java
/****
* WebView 实现下拉加载
*/
public class MainActivity extends AppCompatActivity { private PtrClassicFrameLayout mPtrFrame;
private WebView mWebView; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mWebView= (WebView) findViewById(R.id.webview);
mPtrFrame= (PtrClassicFrameLayout) findViewById(R.id.rotate_header_web_view_frame);
initView();
} private void initView(){
mWebView.setWebViewClient(new WebViewClient() { @Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if(url.toLowerCase().startsWith("http://") || url.toLowerCase().startsWith("https://"))
{
return false;
}
return true;
}
@Override
public void onPageFinished(WebView view, String url) {
mPtrFrame.refreshComplete();
} });
mPtrFrame.setLastUpdateTimeRelateObject(this);
mPtrFrame.setPtrHandler(new PtrHandler() {
@Override
public boolean checkCanDoRefresh(PtrFrameLayout frame, View content, View header) {
return PtrDefaultHandler.checkContentCanBePulledDown(frame, mWebView, header);
}
@Override
public void onRefreshBegin(PtrFrameLayout frame) {
updateData();
}
});
mPtrFrame.setResistance(1.7f);
mPtrFrame.setRatioOfHeaderHeightToRefresh(1.2f);
mPtrFrame.setDurationToClose(200);
mPtrFrame.setDurationToCloseHeader(1000);
mPtrFrame.setPullToRefresh(false);
mPtrFrame.setKeepHeaderWhenRefresh(true);
mPtrFrame.postDelayed(new Runnable() {
@Override
public void run() {
mPtrFrame.autoRefresh();
}
}, 100);
}
private void updateData() {
mWebView.loadUrl("https://my.oschina.net/zhangqie/blog");
} }
权限：
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
注：上图效果是参考他人写的
更多控件实现下拉刷新效果图： 可以参考 https://github.com/DickyQie/android-advanced-effect/tree/pull-down-refresh 我就是参考此案例来实现的
更多实现方式 https://github.com/liaohuqiu/android-Ultra-Pull-To-Refresh
图1：
源码点击下载
图2：
https://github.com/DickyQie/android-advanced-effect/tree/webview-pull-refresh