[轉載]httpClient.execute拋Connection to refused異常問題

在4.0之后android采用了嚴格模式：所以在你得activity創建的時候，在super.onCreate(savedInstanceState);后面加上這個
 StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
            .detectDiskReads()
            .detectDiskWrites()
            .detectAll()   // or .detectAll() for all detectable problems
            .penaltyLog()
            .build());
         StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
            .detectLeakedSqlLiteObjects()
            .detectLeakedClosableObjects()
            .penaltyLog()
            .penaltyDeath()
            .build());