Scan error after permission granted

Dear Eddy,

Thanks for building this plugin, I just try to implement this plugin in my tns-angular project.

Just before scan performed, it ask for camera permission, but after it granted, the following error shown up

No scan. Error: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.Context android.content.Context.getApplicationContext()' on a null object reference
    android.support.v4.content.LocalBroadcastManager.getInstance(LocalBroadcastManager.java:102)
    com.tns.Runtime.callJSMethodNative(Native Method)
    com.tns.Runtime.dispatchCallJSMethodNative(Runtime.java:1084)
    com.tns.Runtime.callJSMethodImpl(Runtime.java:966)
    com.tns.Runtime.callJSMethod(Runtime.java:953)
    com.tns.Runtime.callJSMethod(Runtime.java:937)
    com.tns.Runtime.callJSMethod(Runtime.java:929)
    com.tns.gen.java.lang.Object_frnal_ts_helpers_l58_c38__ClickListenerImpl.onClick(Object_frnal_ts_helpers_l58_c38__ClickListenerImpl.java:12)
    android.view.View.performClick(View.java:5340)
    android.view.View$PerformClick.run(View.java:21610)
    android.os.Handler.handleCallback(Handler.java:815)
    android.os.Handler.dispatchMessage(Handler.java:104)
    android.os.Looper.loop(Looper.java:207)
    android.app.ActivityThread.main(ActivityThread.java:5763)
    java.lang.reflect.Method.invoke(Native Method)
    com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
    com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)

here is my scanner code

scanQRCode() {
        console.log("scanning");

        this.scanner.scan({
            formats: "QR_CODE",
            message: "Use the volume buttons for extra light",
            showFlipCameraButton: true,   // default false
            showTorchButton: true,        // default false
            closeCallback: () => { console.log("Scanner closed") },
            resultDisplayDuration: 500
        }).then((result) => {
              // Note that this Promise is never invoked when a 'continuousScanCallback' function is provided
            alert({
                title: "Scan result",
                message: "Format: " + result.format + ",\nValue: " + result.text,
                okButtonText: "OK"
            });
            },
            (errorMessage) => {
                console.log("No scan. " + errorMessage);
            }
        );
    }

[EddyVerbruggen]

Hi! At what point do you call scanQRCode? Do you trigger it from a button, or during app startup? In case of the latter try to move the code to your first viewcontroller, or wrap it in a setTimeout.

[EddyVerbruggen]

Thanks! 👍