android项目报Json空错误，但是这个项目别人运行不出错，我电脑生成的apk安装也会出现停止，求教为什么
01-12 10:27:36.874: D/AndroidRuntime(1023): Shutting down VM
01-12 10:27:36.874: W/dalvikvm(1023): threadid=1: thread exiting with uncaught exception (group=0x40a13300)
01-12 10:27:36.954: D/com.umeng.common.b(1023): Could not get location from GPS or Cell-id, lack ACCESS_COARSE_LOCATION or ACCESS_COARSE_LOCATION permission?
01-12 10:27:36.984: D/MobclickAgent(1023): cache buffer success
01-12 10:27:37.024: E/AndroidRuntime(1023): FATAL EXCEPTION: main
01-12 10:27:37.024: E/AndroidRuntime(1023): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.PicGenie/com.PicGenie.Activity_Login}: java.lang.NullPointerException
01-12 10:27:37.024: E/AndroidRuntime(1023): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
01-12 10:27:37.024: E/AndroidRuntime(1023): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
01-12 10:27:37.024: E/AndroidRuntime(1023): at android.app.ActivityThread.access$600(ActivityThread.java:130)
01-12 10:27:37.024: E/AndroidRuntime(1023): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
01-12 10:27:37.024: E/AndroidRuntime(1023): at android.os.Handler.dispatchMessage(Handler.java:99)
01-12 10:27:37.024: E/AndroidRuntime(1023): at android.os.Looper.loop(Looper.java:137)
01-12 10:27:37.024: E/AndroidRuntime(1023): at android.app.ActivityThread.main(ActivityThread.java:4745)
01-12 10:27:37.024: E/AndroidRuntime(1023): at java.lang.reflect.Method.invokeNative(Native Method)
01-12 10:27:37.024: E/AndroidRuntime(1023): at java.lang.reflect.Method.invoke(Method.java:511)
01-12 10:27:37.024: E/AndroidRuntime(1023): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
01-12 10:27:37.024: E/AndroidRuntime(1023): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
01-12 10:27:37.024: E/AndroidRuntime(1023): at dalvik.system.NativeStart.main(Native Method)
01-12 10:27:37.024: E/AndroidRuntime(1023): Caused by: java.lang.NullPointerException
01-12 10:27:37.024: E/AndroidRuntime(1023): at com.entity.GetJson.jsonType(GetJson.java:176)
01-12 10:27:37.024: E/AndroidRuntime(1023): at com.PicGenie.Activity_Login.addListener(Activity_Login.java:61)
01-12 10:27:37.024: E/AndroidRuntime(1023): at com.PicGenie.Activity_Login.onCreate(Activity_Login.java:35)
01-12 10:27:37.024: E/AndroidRuntime(1023): at android.app.Activity.performCreate(Activity.java:5008)
01-12 10:27:37.024: E/AndroidRuntime(1023): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
01-12 10:27:37.024: E/AndroidRuntime(1023): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
01-12 10:27:37.024: E/AndroidRuntime(1023): ... 11 more
01-12 10:27:38.874: I/Process(1023): Sending signal. PID: 1023 SIG: 9
