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用户界面线和机器人装置(和3.0机件或更新机件)中的UI线网络
原标题：Network in UI thread in an android device(android 3.0 or newer)

I have to parse a website html code and show some info in my app
So I tried JSoup for getting result
It works great on the emulator but in a real device it will crashes; here is the log : 

05-25 21:42:20.935: D/AndroidRuntime(32230): Shutting down VM  
05-25 21:42:20.935: W/dalvikvm(32230): threadid=1: thread exiting with uncaught exception (group=0x401b9760)  
05-25 21:42:20.940: E/AndroidRuntime(32230): FATAL EXCEPTION: main
05-25 21:42:20.940: E/AndroidRuntime(32230): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.abbasizadeh.Currency/com.abbasizadeh.Currency.CurrencyUpdatableActivity}: android.os.NetworkOnMainThreadException
05-25 21:42:20.940: E/AndroidRuntime(32230):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1815)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1831)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at android.app.ActivityThread.access$500(ActivityThread.java:122)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1024)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at android.os.Handler.dispatchMessage(Handler.java:99)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at android.os.Looper.loop(Looper.java:132)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at android.app.ActivityThread.main(ActivityThread.java:4123)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at java.lang.reflect.Method.invokeNative(Native Method)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at java.lang.reflect.Method.invoke(Method.java:491)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at dalvik.system.NativeStart.main(Native Method)
05-25 21:42:20.940: E/AndroidRuntime(32230): Caused by: android.os.NetworkOnMainThreadException
05-25 21:42:20.940: E/AndroidRuntime(32230):    at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1077)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at java.net.InetAddress.lookupHostByName(InetAddress.java:477)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at java.net.InetAddress.getAllByNameImpl(InetAddress.java:277)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at java.net.InetAddress.getAllByName(InetAddress.java:249)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.<init>(HttpConnection.java:69)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.<init>(HttpConnection.java:48)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection$Address.connect(HttpConnection.java:304)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnectionPool.get(HttpConnectionPool.java:89)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getHttpConnection(HttpURLConnectionImpl.java:292)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.makeConnection(HttpURLConnectionImpl.java:274)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:217)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:404)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:391)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at org.jsoup.helper.HttpConnection.execute(HttpConnection.java:157)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at org.jsoup.helper.HttpConnection.get(HttpConnection.java:146)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at com.abbasizadeh.Currency.CurrencyUpdater.updateInfo(CurrencyUpdater.java:35)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at com.abbasizadeh.Currency.CurrencyUpdatableActivity.onCreate(CurrencyUpdatableActivity.java:20)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1053)
05-25 21:42:20.940: E/AndroidRuntime(32230):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1779)
05-25 21:42:20.940: E/AndroidRuntime(32230):    ... 11 more

in CurrencyUpdatableActivity.java:20 I call CurrencyUpdater.java:35 and CurrencyUpdater.java:35 is this: 

Document document = Jsoup.connect(url).get();

感谢您在这个奇怪问题上的帮助

编辑:为了更好地搜索其他版本,我在我的标题中添加了机器人版本问题

最佳回答

Inandroid 3. 0 和 newer, 您被禁止在 UI 线索上触摸网络或文件 IO 。 这是件好事, 因为它迫使您不中断用户界面的操作, 操作可能需要很长时间。 请查看您的日志中的这一行 :

05-25 21:42:20.940: E/AndroidRuntime(32230): Caused by: android.os.NetworkOnMainThreadException

您已经知道该例外被扔到哪里了, 现在您需要将该代码放入 < a href=>的 DOInBackground () 方法“ http:// developmenter.android. com/ reference/android/ os/ AsyncTask. html" rel=“ no follow” > Asynctask 。

时间：2012-05-25 22:31:24
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