连接数据库时，有问题

08-11 05:05:41.724: I/System.out(319): Network error IOException: The operation timed out
08-11 05:05:41.734: D/AndroidRuntime(319): Shutting down VM
08-11 05:05:41.734: W/dalvikvm(319): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
08-11 05:05:41.784: E/AndroidRuntime(319): FATAL EXCEPTION: main
08-11 05:05:41.784: E/AndroidRuntime(319): java.lang.RuntimeException: Unable to start activity ComponentInfo{T.sqlactivity/T.sqlactivity.MainActivity}: java.lang.NullPointerException
08-11 05:05:41.784: E/AndroidRuntime(319):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
08-11 05:05:41.784: E/AndroidRuntime(319):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
08-11 05:05:41.784: E/AndroidRuntime(319):  at android.app.ActivityThread.access$2300(ActivityThread.java:125)
08-11 05:05:41.784: E/AndroidRuntime(319):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
08-11 05:05:41.784: E/AndroidRuntime(319):  at android.os.Handler.dispatchMessage(Handler.java:99)
08-11 05:05:41.784: E/AndroidRuntime(319):  at android.os.Looper.loop(Looper.java:123)
08-11 05:05:41.784: E/AndroidRuntime(319):  at android.app.ActivityThread.main(ActivityThread.java:4627)
08-11 05:05:41.784: E/AndroidRuntime(319):  at java.lang.reflect.Method.invokeNative(Native Method)
08-11 05:05:41.784: E/AndroidRuntime(319):  at java.lang.reflect.Method.invoke(Method.java:521)
08-11 05:05:41.784: E/AndroidRuntime(319):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
08-11 05:05:41.784: E/AndroidRuntime(319):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
08-11 05:05:41.784: E/AndroidRuntime(319):  at dalvik.system.NativeStart.main(Native Method)
08-11 05:05:41.784: E/AndroidRuntime(319): Caused by: java.lang.NullPointerException
08-11 05:05:41.784: E/AndroidRuntime(319):  at T.sqlactivity.MainActivity.testConnection(MainActivity.java:58)
08-11 05:05:41.784: E/AndroidRuntime(319):  at T.sqlactivity.MainActivity.onCreate(MainActivity.java:44)
08-11 05:05:41.784: E/AndroidRuntime(319):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-11 05:05:41.784: E/AndroidRuntime(319):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
08-11 05:05:41.784: E/AndroidRuntime(319):  ... 11 more