错误 StrictMode$AndroidBlockGuardPolicy.onNetwork
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Error StrictMode$AndroidBlockGuardPolicy.onNetwork
提问by user3415458
I created android application and use JSONget data from server but I got the error show below:
我创建了 android 应用程序并使用JSON从服务器获取数据，但出现以下错误：
android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)
how can I fix this problem
Thank you
我该如何解决这个问题
谢谢
回答by user3113670
you have to insert 2 lines "StrictMode" on MainActivity Class, example's below:
您必须在 MainActivity 类上插入 2 行“StrictMode”，示例如下：
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
try {
// JSON here
} catch (JSONException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
setContentView(R.layout.activity_main);
Intent intent=new Intent(this,HomeActivity.class);
startActivity(intent);
}
}
Aey.Sakon
爱沙空
回答by Arshad Ali
Better to use AsyncTaskas mentioned here, an Alternative for just getting rid of the Exceptionis use :
更好地使用这里AsyncTask提到的，只是摆脱is use的替代方法：Exception
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}
or this :
或这个 ：
Thread thread = new Thread(new Runnable(){
@Override
public void run() {
try {
//Your code goes here
} catch (Exception e) {
Log.e(TAG, e.getMessage());
}
}
});
thread.start();
in your Activity where Exceptionoccurs.
在您的活动中Exception发生。
回答by Viraj Patel
Just add two lines after on create method
只需在创建方法后添加两行
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
