com.sudyapp

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// java.lang.RuntimeException: Unable to start activity ComponentInfo{com.sudyapp/com.sudy.app.activities.GetCoinsActivity}: java.lang.NullPointerException: Attempt to read from field 'java.lang.String com.sudy.app.model.User.coins_num' on a null object reference
//  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
//  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
//  at android.app.ActivityThread.-wrap11(ActivityThread.java)
//  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
//  at android.os.Handler.dispatchMessage(Handler.java:102)
//  at android.os.Looper.loop(Looper.java:148)
//  at android.app.ActivityThread.main(ActivityThread.java:5417)
//  at java.lang.reflect.Method.invoke(Native Method)
//  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
//  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
// Caused by: java.lang.NullPointerException: Attempt to read from field 'java.lang.String com.sudy.app.model.User.coins_num' on a null object reference
//  at com.sudy.app.activities.GetCoinsActivity.onCreate(Unknown Source)
//  at android.app.Activity.performCreate(Activity.java:6251)
//  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
//  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
//  ... 9 more