champion champion - 24 days ago 24
Android Question

How to secure pre marshmallow application crashings

I am making an application that contains a part of activities that can be executed on pre marshmallow devices and some part of activities on marshmallow and above.
So what I want to do is don't let the application crash on pre marshmallow device that runs the activity that is supported on marshmallow device and just show a toast that your device does not support this module to access.

Here I am stuck on finger print module that crashes the applications on pre marshmallow device.

if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {

//do something
}
else
showToastMessage();


Error

FATAL EXCEPTION: main
java.lang.VerifyError: com/example/android/fingerprintdialog/MainActivity
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1130)
at android.app.Instrumentation.newActivity(Instrumentation.java:1078)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2210)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2349)
at android.app.ActivityThread.access$700(ActivityThread.java:159)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1316)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:176)
at android.app.ActivityThread.main(ActivityThread.java:5419)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
at dalvik.system.NativeStart.main(Native Method)

Answer

Just check whether installed app is using marshmallow or above Android OS.

if(Build.VERSION.SDK_INT>=Build.VERSION_CODES.M) { FingerPrint is supported by Android Show the FingerPrint touch screen. } else { FingerPrint is not supported by Android Don't show the FingerPrint touch screen. }

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