Java Android Webview：无法调用determinedVisibility() - 从未见过pid 的连接
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Android Webview: Cannot call determinedVisibility() - never saw a connection for the pid
提问by Laurens V
I have a Android Webview and when I click on a link to download a file (image of pdf etc) I got a error message.
我有一个 Android Webview，当我单击链接下载文件（pdf 图像等）时，我收到一条错误消息。
Error message:
Cannot call determinedVisibility() - never saw a connection for the pid
Any idea what I do wrong? Who can help please!?
知道我做错了什么吗？请问谁能帮帮忙！？
采纳答案by Burhan ARAS
Just a bit of configuration:
只是一点配置：
webview.getSettings().setJavaScriptEnabled(true);
webview.getSettings().setDomStorageEnabled(true);
回答by Dennis Allert
I got the same error and Burhans solution was not helping me. I think things went wrong when you′re trying to load different urls too fast.
我遇到了同样的错误，Burhans 解决方案对我没有帮助。我认为当您尝试过快加载不同的 url 时出现问题。
Edit: Found a better solution credits go to user2652394 WebView must be loaded twice to load correctly
编辑：找到一个更好的解决方案学分转到 user2652394 WebView 必须加载两次才能正确加载
You have to do something like this:
你必须做这样的事情：
webView.postDelayed(new Runnable() {
@Override
public void run() {
webView.loadUrl(landingpage);
}
}, 500);
回答by AlexVPerl
I faced the same issue.
我遇到了同样的问题。
Was solved by giving a WebView a static height (ie 300dp) or specifying minHeight value.
通过为 WebView 提供静态高度（即 300dp）或指定 minHeight 值来解决。
回答by manuel
This is how I fixed a similar issue:
这是我解决类似问题的方法：
mWebView.setWebChromeClient(new WebChromeClient());
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.getSettings().setDomStorageEnabled(true);
mWebView.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view,String url) {
return false;
}
});
mWebView.loadURL(...
回答by Hessam J.E
This problem in my case produce by incorrect settings in layout properties. I had used:
在我的情况下，这个问题是由布局属性中的错误设置引起的。我曾经使用过：
<WebView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/webView"
android:layout_below="@+id/textView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="false"
android:layout_alignWithParentIfMissing="false" />
Instead of setting:
而不是设置：
<WebView
android:id="@+id/webView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_below="@+id/textView" />
The problems had been solved, when I removed "layout_alignParent" settings.
当我删除“layout_alignParent”设置时，问题已经解决。
回答by Manu Antony
Check whether internet permission is properly set on the Manifest file. Make sure that the permission tag should be outsideof your Application tag.
检查清单文件是否正确设置了互联网权限。确保权限标签应该在您的应用程序标签之外。
<uses-permission android:name="android.permission.INTERNET" />
Hope this might help some one.
希望这可能对某人有所帮助。
回答by kashyap jimuliya
Late to party, but might help some.
May sound silly as hell, but the mistake I made was not adding http://in the beginning of the URL.
聚会迟到，但可能会有所帮助。可能听起来很傻，但我犯的错误是没有http://在 URL 的开头添加。
回答by Bord81
I found a workaround by using onPageFinishedmethod instead of shouldOverrideUrlLoading. It also provides the needed URL in the list of arguments.
我通过使用onPageFinishedmethod 而不是shouldOverrideUrlLoading. 它还在参数列表中提供所需的 URL。
The only trick is to set a check so that the main logic of the method (in my case making a Toast) is not triggered when onPageFinishedgets called on the the page load itself.
唯一的技巧是设置一个检查，以便onPageFinished在页面加载本身上调用时不会触发该方法的主要逻辑（在我的例子中是一个 Toast）。
回答by Jon Goodwin
Background
背景
Here is the source code of the methodin the browser enginethat gives the error(BindingManagerImpl.java), from Chromium source:
这里是源代码方法在浏览器引擎，使该误差（BindingManagerImpl.java），从铬源：
@Override
public void determinedVisibility(int pid) {
ManagedConnection managedConnection;
synchronized (mManagedConnections) {
managedConnection = mManagedConnections.get(pid);
}
if (managedConnection == null) {
Log.w(TAG, "Cannot call determinedVisibility() - never saw a connection for the pid: "
+ "%d", pid);
return;
}
Analysis
分析
It's a rendering warningfrom content.
这是来自内容的渲染警告。
Consecutivecalls to loadUrlcause a race condition. The problem is that loadUrl("file://..")doesn'tcomplete immediately, and so when you call loadUrl("javascript:..")it will sometimes execute beforethe page has loaded.
连续调用loadUrl导致竞争条件。问题是它loadUrl("file://..")不会立即完成，因此当您调用loadUrl("javascript:..")它时，有时会在页面加载之前执行。
Detail
细节
For more detail seethis stackoverflow answer.
有关更多详细信息，请参阅此stackoverflow 答案。
回答by qingsong xu
mWebView.setDownloadListener(new DownloadListener() {
@Override
public void onDownloadStart(String url, String userAgent, String contentDisposition,
String mimetype, long contentLength) {
Log.d("download",url);
}
});
