Forms flick back and forward when calling native interface with "com.codename1.impl.android.AndroidNativeUtil.checkForPermission"

[mispro...@gmail.com]

Dear Sir,

When I call cn1 function "com.codename1.impl.android.AndroidNativeUtil.checkForPermission" for granting permission on android 6.0 in event "Post Show" from another page, the form will be flicked backward on allowing one permission.

For example

Form "First" there is button to form "Second"

@Override
protected void onFirst_ButtonAction(Component c, ActionEvent event) {

    Form gui = showForm("Second", null);
    gui.getMenuBar().removeAll();
}

In Second form
@Override
protected void postSecond(Form f) {
    MobileNative mobileNative = (MobileNative) NativeLookup.create(MobileNative.class);
        mobileNative.checkPermissions();

}

When I call the function to allow permissions, it flick from "Second" to "First" for each permission clicking allow
It is native function
public class MobileNativeImpl {

    public boolean checkPermissions() {

        if(!com.codename1.impl.android.AndroidNativeUtil.checkForPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE, "WRITE_EXTERNAL_STORAGE")){
            // you didn't get the permission, you might want to return here
            return false;
        }
        // you have the permission, do what you need

        if(!com.codename1.impl.android.AndroidNativeUtil.checkForPermission(Manifest.permission.SEND_SMS, "SEND_SMS")){
            return false;
        }

        if(!com.codename1.impl.android.AndroidNativeUtil.checkForPermission(Manifest.permission.WRITE_CONTACTS, "WRITE_CONTACTS")){
            return false;
        }

        if(!com.codename1.impl.android.AndroidNativeUtil.checkForPermission(Manifest.permission.READ_CONTACTS, "READ_CONTACTS")){
            return false;
        }

        return true;
    }

}

Please advice how to solve the problem, it may cause me not going to "Second" form in some circumstance.

Thanks and Regards,
Ronald

[Chen Fishbein]

Try to wrap these lines in callSerially:

Display.getInstance().callSerially(()->{

    Form gui = showForm("Second", null);
    gui.getMenuBar().removeAll();

});

[mispro...@gmail.com]

I have tried but the flick issue still here. Would you have any solution? Thanks!

[Shai Almog]

Try checking one permission at a time and see if that helps.

[mispro...@gmail.com]

It is tried before. it flick once. Actually, the flick happen when i click allow

[Shai Almog]

What do you mean by "flick"? Do you mean it goes to the previous form?
Try doing this in the before  show.