Question

您好我正在为 Youtube 频道制作一个小型Android应用，我有一个标签主机，其中包含两个不同的活动，这两个活动都在创建时运行Web视图

我有一个Web视图客户端处理外部链接（每个Web视图活动一个）。

第一个标签加载网页正常，但是当我从标签切换到它时，第二个标签只是空白我如何解决这个问题？

以下是处理标签的主要活动的正文代码。

@SuppressWarnings("deprecation")
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    TabHost tabHost = getTabHost();
    TabSpec youtubespec = tabHost.newTabSpec("Youtube");
    // setting Title and Icon for the Tab
    youtubespec.setIndicator("Youtube", getResources().getDrawable(R.drawable.youtube_icon));
    Intent youtubeIntent = new Intent(this, Youtube.class);
    youtubespec.setContent(youtubeIntent);

    TabSpec websitespec = tabHost.newTabSpec("Website");
    // setting Title and Icon for the Tab
    websitespec.setIndicator("Website", getResources().getDrawable(R.drawable.website_icon));
    Intent websiteIntent = new Intent(this, Website.class);
    websitespec.setContent(websiteIntent);

    tabHost.addTab(youtubespec); 
    tabHost.addTab(websitespec); 

}

以下是第一个网络视图的代码。 WebView web1;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.youtube);
    web1 = (WebView) findViewById(R.id.webyt);
    web1.setWebViewClient(new WebViewClient1());
    WebSettings webSettings = web1.getSettings();
    webSettings.setJavaScriptEnabled(true);
    webSettings.setLoadsImagesAutomatically(true);
    webSettings.setPluginState(PluginState.ON);
    webSettings.setJavaScriptCanOpenWindowsAutomatically(false);
    webSettings.setSupportMultipleWindows(true);
    webSettings.setSupportZoom(true);
    webSettings.setBuiltInZoomControls(true); 
    web1.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
    web1.loadUrl("http://www.youtube.com/user/theanykeyyt");

}


@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    // Check if the key event was the Back button and if there's history
    if ((keyCode == KeyEvent.KEYCODE_BACK) && web1.canGoBack()) {
        web1.goBack();
        return true;
    }
    // If it wasn't the Back key or there's no web page history, bubble up to the default
    // system behavior (probably exit the activity)
    return super.onKeyDown(keyCode, event);
}

以下是第二个网络视图的代码

WebView web2; 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.website);
    web2 = (WebView) findViewById(R.id.websitea);
    web2.setWebViewClient(new WebViewClient2());
    WebSettings webSettings = web2.getSettings();
    webSettings.setJavaScriptEnabled(true);
    webSettings.setLoadsImagesAutomatically(true);
    webSettings.setPluginState(PluginState.ON);
    webSettings.setJavaScriptCanOpenWindowsAutomatically(false);
    webSettings.setSupportMultipleWindows(true);
    webSettings.setSupportZoom(true);
    webSettings.setBuiltInZoomControls(true); 
    web2.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
    web2.loadUrl("http://theanykeyyt.wix.com/theanykey");


}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    // Check if the key event was the Back button and if there's history
    if ((keyCode == KeyEvent.KEYCODE_BACK) && web2.canGoBack()) {
        web2.goBack();
        return true;
    }
    // If it wasn't the Back key or there's no web page history, bubble up to the default
    // system behavior (probably exit the activity)
    return super.onKeyDown(keyCode, event);
}

这是网络客户端

@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
   view.loadUrl(url); 
   return true;

}

Answer 1

修复只需要将其添加到清单

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
 <uses-permission android:name="android.permission.INTERNET"/>

第二个WebView无法加载

1 个答案: