Process: com. Example. Lab. Android. Nuc. Coolweather, PID: 17880
Java. Lang. RuntimeException: Unable to start the activity ComponentInfo {com. Example. Lab. Android. Nuc. Coolweather/com. The example. The lab. The android. The nuc. Coolweather. Activity. WeatherActivity} : Java. Lang. NullPointerException: Attempt to read the from field 'Java. Lang. String com. Example. Lab. Android. The nuc. Coolweather. Gson. Basic. The cityName' on a null object reference
. An android app. ActivityThread. PerformLaunchActivity (ActivityThread. Java: 2793)
. An android app. ActivityThread. HandleLaunchActivity (ActivityThread. Java: 2864)
. An android app. ActivityThread. - wrap12 (ActivityThread. Java)
An android. App. ActivityThread $H.h andleMessage (ActivityThread. Java: 1567)
An android. OS. Handler. DispatchMessage (Handler. Java: 105)
. An android OS. Stars. Loop (156). Which Java:
. An android app. ActivityThread. Main (6523) ActivityThread. Java:
The at Java. Lang. Reflect. Method. Invoke (Native Method)
At com. Android. Internal. OS. $MethodAndArgsCaller ZygoteInit. Run (ZygoteInit. Java: 942)
At com. Android. Internal. OS. ZygoteInit. Main (ZygoteInit. Java: 832)
Under Caused by: Java. Lang. NullPointerException: Attempt to read the from field 'Java. Lang. String com. Example. Lab. Android. The nuc. Coolweather. Gson. Basic. The cityName' on a null object reference
At com. Example. Lab. Android. Nuc. Coolweather. Activity. WeatherActivity. ShowWeatherInfo (WeatherActivity. Java: 126)
At com. Example. Lab. Android. Nuc. Coolweather. Activity. WeatherActivity. OnCreate (WeatherActivity. Java: 74)
. An android app. Activity. PerformCreate (6915) Activity. Java:
. An android app. Instrumentation. CallActivityOnCreate (1123) Instrumentation. Java:
. An android app. ActivityThread. PerformLaunchActivity (ActivityThread. Java: 2746)
. An android app. ActivityThread. HandleLaunchActivity (ActivityThread. Java: 2864)
. An android app. ActivityThread. - wrap12 (ActivityThread. Java)
An android. App. ActivityThread $H.h andleMessage (ActivityThread. Java: 1567)
An android. OS. Handler. DispatchMessage (Handler. Java: 105)
. An android OS. Stars. Loop (156). Which Java:
. An android app. ActivityThread. Main (6523) ActivityThread. Java:
The at Java. Lang. Reflect. Method. Invoke (Native Method)
At com. Android. Internal. OS. $MethodAndArgsCaller ZygoteInit. Run (ZygoteInit. Java: 942)
At com. Android. Internal. OS. ZygoteInit. Main (ZygoteInit. Java: 832)
CodePudding user response:
Adding deserialized to weather class notes