在Android 4.0`$ android.os.StrictMode异常AndroidBlockGuardPolicy.onNetwork（StrictMode）` [英] Exception on Android 4.0 `android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode)`

问题描述

当我在Android 2.3.6运行这块code的，它工作正常。在4.0我得到一个StrictMode例外。从SO一些问题，好像你不能做的UI线程上的网络操作。但我没有做UI线程上的任何UI操作。

When I run this piece of code on Android 2.3.6, it works fine. On 4.0 I get a StrictMode exception. From some questions on SO, seems like you cant do network operations on the UI thread. But I am not doing any UI operation on the UI thread.

我打电话doBackground而不是直接执行，因为我需要检查doBackground的返回值。我想下面应该有工作。

I am calling doBackground directly and not execute, since I need to check the return value of the doBackground. I guess the below should have worked.

我是什么在这里失踪？

handler.postDelayed(new Runnable() {
@Override
public void run() {
    God.identityHash = (String) new SwitchServer((IActionBar) splashScreen,
                God.mCruiseOnServer, nameText, phoneNumberText)
                .doInBackground(null);

    if (!mIsBackButtonPressed && God.identityHash != null) {
        FlurryAgent.logEvent(God.TCACCEPTED_AND_REGISTERED);
        Intent intent = new Intent(SplashScreen.this, HomeScreen.class);
        SplashScreen.this.startActivity(intent);
        finish();
    } else {
        Toast.makeText(splashScreen,
            "Unable to save your details. Please try again.",
            Toast.LENGTH_LONG).show();
        God.setTermsAndConditions(splashScreen, false);
    }
}
}, SPLASH_DURATION); 

编辑：在手机上未启用严格模式

Edit : Strict mode is not enabled on the phone.

推荐答案

首先， StrictMode 是你明确地code开启时，它仅仅是一个辅助调试，而不应在生产code会留在。

Firstly, StrictMode is something you explicitly turned on from code, it is just a debugging aid, and should not be left on in production code.

其次，调用 .doInBackground 手动意味着在UI线程上运行它。如果您使用 的AsyncTask 如预期，你会得到它的返回值作为参数在 .onPostExecute 。

Secondly, calling .doInBackground manually means running it on the UI thread. If you use AsyncTask as intended, you get its return value as a parameter in .onPostExecute.

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