android apk release error

[taohaibing]

09-17 11:46:55.448 20714 20714 E AndroidRuntime: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Class java.lang.Object.getClass()' on a null object reference
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at iyegoroff.RNTextGradient.k.a()
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at iyegoroff.RNTextGradient.h.j()
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at iyegoroff.RNTextGradient.h.a()
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at iyegoroff.RNTextGradient.g.a()
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at com.facebook.react.uimanager.da$p.execute()
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at com.facebook.react.uimanager.ba.run()
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at com.facebook.react.uimanager.da.i()
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at com.facebook.react.uimanager.da.i()
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at com.facebook.react.uimanager.da$f.b()
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at com.facebook.react.uimanager.c.a()
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at com.facebook.react.modules.core.i$b.a()
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at com.facebook.react.modules.core.a.doFrame()
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at android.view.Choreographer$CallbackRecord.run(Choreographer.java:924)
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at android.view.Choreographer.doCallbacks(Choreographer.java:735)
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at android.view.Choreographer.doFrame(Choreographer.java:664)
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:912)
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at android.os.Handler.handleCallback(Handler.java:761)
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:98)
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at android.os.Looper.loop(Looper.java:156)
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:6517)
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:942)
09-17 11:46:55.448 20714 20714 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:832)

[iyegoroff]

Please specify your rn & rntg versions.

[taohaibing]

Please specify your rn & rntg versions.

"dependencies": {
"react": "16.8.6",
"react-devtools": "^3.6.1",
"react-native": "0.60.3",
"react-native-text-gradient": "^0.1.7",

},

[iyegoroff]

This looks ok to me. Can you provide a replicating example or show the code that leads to this error?

[jdvvaghelaoffice]

Please provide proguard lines, which will work for release builds.

[jdvvaghelaoffice]

Please provide proguard lines, which will work for release builds.

Used https://github.com/react-native-community/react-native-masked-view library which is now officially supported for android too.
Dependent library is react-native-linear-gradient.