[英]SwipeRefreshLayout with Webview not working
這是我的帶有SwipeRefreshLayout的webview應用代碼。 但是SwipeRefresh無法正常工作,請檢查一下。 但是其他所有東西都正常工作。 像網頁視圖一樣,菜單按鈕。
以下是我的activity_main.xml文件
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout>
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/swipe"
android:layout_width="match_parent"
android:layout_height="match_parent">
<WebView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerHorizontal="true"
android:id="@+id/webView"
/>
</android.support.v4.widget.SwipeRefreshLayout>
</RelativeLayout>
這是我的MainActivity.java
文件
public class MainActivity extends AppCompatActivity {
WebView webView;
SwipeRefreshLayout swipe;
@Override
public boolean onCreateOptionsMenu (Menu manu){
getMenuInflater().inflate(R.menu.main, manu);
return true;
}
@Override
public boolean onOptionsItemSelected (MenuItem item){
int id=item.getItemId();
if(id==R.id.id_about){
Intent intentabout=new Intent(MainActivity.this, About.class);
startActivity(intentabout);
return true;
}
if(id==R.id.id_terms){
return true;
}
if(id==R.id.id_privacy){
return true;
}
return true;
}
@Override
public void onBackPressed() {
if(webView.canGoBack()) {
webView.goBack();
} else {
super.onBackPressed();
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
swipe = (SwipeRefreshLayout) findViewById(R.id.swipe);
swipe.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
LoadWeb();
}
});
LoadWeb();
}
public void LoadWeb(){
webView = (WebView) findViewById(R.id.webView);
WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setRenderPriority(WebSettings.RenderPriority.HIGH);
webSettings.setCacheMode(WebSettings.LOAD_NO_CACHE);
webSettings.setDomStorageEnabled(true);
webSettings.setAppCacheEnabled(true);
webView.loadUrl("https://google.com");
swipe.setRefreshing(true);
webView.setWebViewClient(new WebViewClient() {
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
webView.loadUrl("file:///android_asset/error.html");
}
public void onPagefinished(WebView view, String url){
swipe.setRefreshing(false);
}
});
}
}
您必須將WebView放入SwipeRefreshLayout中:
public class MainActivity extends AppCompatActivity {
WebView webView;
SwipeRefreshLayout swipeRefreshLayout;
String currentUrl = "https://www.google.co.in/";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webView = (WebView) findViewById(R.id.webView);
swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipeRefreshLayout);
webView.loadUrl(currentUrl);
webView.setWebViewClient(new MyWebViewClient());
swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
webView.loadUrl(currentUrl);
}
});
}
public class MyWebViewClient extends WebViewClient{
@Override
public void onPageFinished(WebView view, String url) {
swipeRefreshLayout.setRefreshing(false);
currentUrl = url;
super.onPageFinished(view, url);
}
}
}
swipeRefreshLayout.setRefreshing(false)停止動畫。
您應該添加
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
swipe = (SwipeRefreshLayout) findViewById(R.id.swipe);
swipe.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
LoadWeb();
}
});
swipe.setRefreshing(true); //add
LoadWeb();
}
LoadWeb();
您可以將Webview放在NestedScrollView
內以NestedScrollView
此工作。
例:
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/swipe"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<WebView
android:id="@+id/webView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.v4.widget.NestedScrollView>
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