Question

我正在创建一个从媒体服务器流式传输视频的Android应用。我正在使用我的频道的列表视图和控制视频的switch语句。在switch语句中有一些简单的javascript代码，例如：

webView.loadUrl("javascript:void(jwplayer().playlistItem(2))");

这样可以正常但随机地抛出这个错误很多。我无法找到原因，我已经尝试不等待视频加载和加载新视频，有时它会导致它，有时它不会，我只选择了4个视频并在更改前观看了5秒，这个时候导致它，有时不会。我的logcat显示了这个：

03-20 14:19:29.710: D/dalvikvm(14679): GC_CONCURRENT freed 426K, 8% free 7600K/8199K, paused 3ms+3ms
03-20 14:20:32.490: D/dalvikvm(14679): threadid=18: still suspended after undo (sc=1 dc=1)
03-20 14:20:32.540: D/dalvikvm(14679): threadid=18: still suspended after undo (sc=1 dc=1)
03-20 14:20:32.550: D/dalvikvm(14679): GC_CONCURRENT freed 426K, 8% free 7599K/8199K, paused 4ms+3ms
03-20 14:20:37.220: W/System.err(14679): java.net.SocketException: No route to host
03-20 14:20:37.220: W/System.err(14679):    at org.apache.harmony.luni.platform.OSNetworkSystem.connect(Native Method)
03-20 14:20:37.220: W/System.err(14679):    at dalvik.system.BlockGuard$WrappedNetworkSystem.connect(BlockGuard.java:369)
03-20 14:20:37.220: W/System.err(14679):    at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:208)
03-20 14:20:37.220: W/System.err(14679):    at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:431)
03-20 14:20:37.220: W/System.err(14679):    at java.net.Socket.connect(Socket.java:901)
03-20 14:20:37.220: W/System.err(14679):    at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.<init>(HttpConnection.java:75)
03-20 14:20:37.220: W/System.err(14679):    at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.<init>(HttpConnection.java:48)
03-20 14:20:37.220: W/System.err(14679):    at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection$Address.connect(HttpConnection.java:304)
03-20 14:20:37.220: W/System.err(14679):    at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnectionPool.get(HttpConnectionPool.java:89)
03-20 14:20:37.220: W/System.err(14679):    at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getHttpConnect ion(HttpURLConnectionImpl.java:292)
03-20 14:20:37.220: W/System.err(14679):    at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.makeConnection(HttpURLConnectionImpl.java:274)
03-20 14:20:37.220: W/System.err(14679):    at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:217)
03-20 14:20:37.230: W/System.err(14679):    at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:624)
03-20 14:20:37.230: W/System.err(14679):    at dalvik.system.NativeStart.run(Native Method)
03-20 14:20:37.230: W/System.err(14679):    at dalvik.system.NativeStart.run(Native Method)

Answer 1

您是否在视图上启用了javasctript？

webView.getSettings().setJavaScriptEnabled(true);

另外，你应该考虑在javascript语句的末尾添加一个冒号。

webView.loadUrl("javascript:void(jwplayer().playlistItem(2));");

如果没有任何事情要做，请尝试捕获异常，并尝试一定次数，在web浏览器中有一些不稳定因素和android中的httpclients。

Android App - Java.Net.SocketException：没有到主机的路由

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