android.os.NetworkOnMainThreadException 异常处理

android4.0时候提示?android.os.NetworkOnMainThreadException异常,在2.3以下无

在appliction里添加?

int fv =android.os.Build.VERSION.SDK_INT;if (fv>10) { StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()          .detectDiskReads()          .detectDiskWrites()          .detectNetwork()   // or .detectAll() for all detectable problems          .penaltyLog()          .build());  StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()          .detectLeakedSqlLiteObjects()          .detectLeakedClosableObjects()          .penaltyLog()          .penaltyDeath()          .build());  }

?