android webview显示空白页 [英] android webview displaying blank page
问题描述
即使在加载HTML代码时也是如此。我得到一个空白的白页，没有错误没有什么。没有在logcat中。
WebView wview =（WebView）findViewById（R.id.webView1）;
wview.getSettings（）。setJavaScriptEnabled（true）;
我已经尝试所有三个尝试加载任何内容到webview：
wview.loadUrl（http://www.google.com）;
wview.loadData（< HTML>< BODY>< H3> Test< / H3>< / BODY>< / HTML>，text / html，utf-8 ;
wview.loadDataWithBaseURL（null，< HTML>< BODY>< H3> Test< / H3>< / BODY>< / HTML>，text / html，utf-8 ，空值）;
所有这三个都给我相同的结果。没有什么。
任何想法？
可能有点太晚了，但是我想和大家分享一下我的经验，因为我有同样的问题，花了很多时间。
将 WebView 放在 RelativeLayout / strong>而不是 FrameLayout 。
我测试过的是： code> WebView 的 onPageFinished（）每次都被调用，但在屏幕上我有空白页。从 chrome：// inspect WebView 调试器我能够ping我的 WebView 通过按 inspect 按钮，之后 WebView 立即刷新。我的想法 - WebView 在 FrameLayout 和 RelativeLayout 修复问题（即使 invalidate（）和 requestLayout（）调用没有帮助） p>
I have an android application that I am developing using the emulator running on android 2.3.3 with an embedded WebView in a framelayout nested in a linearlayout (vertical). No matter what code I use it never actually does anything. I have Permissions on the android application set to INTERNET. Even when trying to load just the HTML code. I get a blank white page, no errors no nothing. Nothing in logcat as well.
WebView wview = (WebView)findViewById(R.id.webView1);
wview.getSettings().setJavaScriptEnabled(true);
I have tried all three of these to attempt to load anything into the webview:
wview.loadUrl("http://www.google.com");
wview.loadData("<HTML><BODY><H3>Test</H3></BODY></HTML>","text/html","utf-8");
wview.loadDataWithBaseURL(null, "<HTML><BODY><H3>Test</H3></BODY></HTML>","text/html","utf-8",null);
All three give me the same results. Nothing.
Any ideas?
It might be a bit too late, but I wanted to share my experience with you, because I had the same problem and spent a lot of time on it.
Put your WebView in RelativeLayout and not in FrameLayout.
What I have tested: My WebView's onPageFinished() was called every time, but on the screen I got blank page. From chrome://inspect WebView debugger I was able to "ping" my WebView by pressing inspect button, and after that WebView was refreshing immediately. My thoughts - WebView isn't rendered correctly in FrameLayout, and RelativeLayout fixes the issue (even invalidate() and requestLayout() calls didn't help).
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