Android Webview“ swiperefreshlayout”不斷旋轉，如何阻止它？

Question

我正在嘗試使用SwipeRefreshLayout刷新SwipeRefreshLayout 。 我不知道如何停止刷新圈子。 我什至不知道其刷新的webview與否。

這是content_main的xml。

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context="com.logitex.webviewandrefresh.MainActivity"
    tools:showIn="@layout/activity_main">

    <android.support.v4.widget.SwipeRefreshLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:id="@+id/swipeRefresh">

    <WebView  xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/webview"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_alignParentBottom="true" />
    </android.support.v4.widget.SwipeRefreshLayout>
</RelativeLayout>

這是MainActivity.java

public class MainActivity extends AppCompatActivity implements SwipeRefreshLayout.OnRefreshListener {

    private SwipeRefreshLayout swipeRefreshLayout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipeRefresh);
        swipeRefreshLayout.setOnRefreshListener(this);

        WebView myWebView = (WebView) findViewById(R.id.webview);
        WebSettings webSettings = myWebView.getSettings();
        webSettings.setJavaScriptEnabled(true);
        myWebView.setWebViewClient(new WebViewClient());
        myWebView.loadUrl("http://www.facebook.com");
    }

    @Override
    public void onRefresh() {
        WebView myWebView = (WebView) findViewById(R.id.webview);
        WebSettings webSettings = myWebView.getSettings();
        webSettings.setJavaScriptEnabled(true);
        myWebView.setWebViewClient(new WebViewClient());
        myWebView.loadUrl("http://www.facebook.com");
    }
}

Answer 1

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

  swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipeRefresh);
  swipeRefreshLayout.setOnRefreshListener(this);

  WebView myWebView = (WebView) findViewById(R.id.webview);
    WebSettings webSettings = myWebView.getSettings();
    webSettings.setJavaScriptEnabled(true);
    myWebView.setWebViewClient(new MyWebViewClient());
    myWebView.loadUrl("http://www.facebook.com");
  }


private class MyWebViewClient extends WebViewClient {
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url)
    {
        webView.setWebChromeClient(new MyWebChromeClient());
        if(Uri.parse(url).getHost().length() == 0) {
            return false;
        }
    }

    @Override
    public void onPageFinished(WebView view, String url) {
         swipeRefreshLayout.setRefreshing(false);
        super.onPageFinished(view, url);
    }
}

@Override
public void onRefresh() {
      myWebView.loadUrl("http://www.facebook.com");
      swipeRefreshLayout.setRefreshing(true);
}

Answer 2

您需要添加一個偵聽器，以便在WebView加載完成時可以獲取回調。 因此，在您的onCreate函數中執行此操作。

myWebView.setWebViewClient(new WebViewClient() {

   public void onPageFinished(WebView view, String url) {
        super.onPageFinished(view, url);
        swipeRefreshLayout.setRefreshing(false); 
    }
});

在onRefresh函數中，您需要刪除此行。

myWebView.setWebViewClient(new WebViewClient());

因為，您要在此處分配一個新的WebViewClient ，它會覆蓋您在onCreate函數中設置的上一個WebViewClient 。

所以最后，您的MainActivity將如下所示。

public class MainActivity extends AppCompatActivity implements SwipeRefreshLayout.OnRefreshListener {

    private SwipeRefreshLayout swipeRefreshLayout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipeRefresh);
        swipeRefreshLayout.setOnRefreshListener(this);

        WebView myWebView = (WebView) findViewById(R.id.webview);
        WebSettings webSettings = myWebView.getSettings();
        webSettings.setJavaScriptEnabled(true);
        myWebView.loadUrl("http://www.facebook.com");

        myWebView.setWebViewClient(new WebViewClient() {

            public void onPageFinished(WebView view, String url) {
                super.onPageFinished(view, url);
                swipeRefreshLayout.setRefreshing(false);
            }
        });
    }

    @Override
    public void onRefresh() {
        WebView myWebView = (WebView) findViewById(R.id.webview);
        WebSettings webSettings = myWebView.getSettings();
        webSettings.setJavaScriptEnabled(true);
        myWebView.loadUrl("http://www.facebook.com");
    }
}

在我這邊工作了。 干杯!