Logcat错误我不明白

时间:2013-12-11 01:30:16

标签: java android eclipse logcat

通常我可以通过查看错误日志来了解问题,看看发生了什么。大多数时候,它给我一个行号,我可以从那里弄明白。

但现在,我迷路了。我不明白我的代码在哪里有问题。

我不确定在哪里开始排除此错误。我不是要求任何讲义或代码更正,所以我还没有显示我的代码,我只是想了解一下这个错误:

12-10 17:12:20.359: E/AndroidRuntime(14072): FATAL EXCEPTION: main
12-10 17:12:20.359: E/AndroidRuntime(14072): android.os.NetworkOnMainThreadException
12-10 17:12:20.359: E/AndroidRuntime(14072):    at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at java.net.InetAddress.lookupHostByName(InetAddress.java:385)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at java.net.InetAddress.getAllByName(InetAddress.java:214)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:137)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at com.sencide.AndroidLogin.postLoginData(AndroidLogin.java:101)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at com.sencide.AndroidLogin.onClick(AndroidLogin.java:153)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at android.view.View.performClick(View.java:4211)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at android.view.View$PerformClick.run(View.java:17362)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at android.os.Handler.handleCallback(Handler.java:725)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at android.os.Handler.dispatchMessage(Handler.java:92)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at android.os.Looper.loop(Looper.java:137)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at android.app.ActivityThread.main(ActivityThread.java:5227)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at java.lang.reflect.Method.invokeNative(Native Method)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at java.lang.reflect.Method.invoke(Method.java:511)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
12-10 17:12:20.359: E/AndroidRuntime(14072):    at dalvik.system.NativeStart.main(Native Method)

2 个答案:

答案 0 :(得分:1)

假设您正在主线程上运行网络操作,请更改ThreadPolicy或在AsyncTask中运行它

AsyncTask是更好的解决方案这里有基本的轮廓外观here以获取更多信息:

private class LoginTask extends AsyncTask {
    public LoginTask(Context context) {
        super(context);
    }

    @Override
    protected Object doInBackground(String... urls) {
           try{      

               }catch{

               }
               return.....;
               }
}

线程策略是一种糟糕的方式,但它的快速脏和Android开发指南建议反对,但它确实有效,但我建议反对它: StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();

答案 1 :(得分:0)

查看AndroidLogin.java的第101行。不应从UI线程调用方法postLoginData。您需要启动一个新线程并将方法调用移到其中。