android.os.NetworkOnMainThreadException 报错解决 安卓主线程http请求

程序员潇然

一次测试的时候，直接在MainActivity的Oncreate方法中，也就是主线程中进行了http请求的发起。

现象

报错如下：

--------- beginning of crash
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.xxx.xxx, PID: 32523
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.xxxx.xxx/com.xxxx.xxx.ui.MainActivity}: android.os.NetworkOnMainThreadException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3271)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3410)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2017)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7397)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:935)
Caused by: android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1565)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:389)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:230)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:212)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:436)
at java.net.Socket.connect(Socket.java:621)

原因

因为Http请求写在了主线程里，在4.0之后在主线程里面执行Http请求都会报这个错

解决方法

新开一个线程，直接new一个Thread或者如下 都可以解决

App.getInstance().getThreadPool().execute(()->{

        });

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