Android上的EasyPermissions不授予权限

我在用 容易出错 库授予我的应用程序中的某些权限。这是一个场景:

这是logcat初始化我的应用程序并按下按钮。

D/HomeActivity: He pulsado ringtoneMenuOpen
D/HomeActivity: onPermissionsDenied
D/HomeActivity: Hemos llegado aquí con permisos denegados y 'No volver a mostrar'

然后出现一个对话框( 应用程序设置对话框 )有必要使用“取消”和“接受”按钮解释权限。我按下“接受”键 设置应用程序屏幕打开 .我点击权限项并 它被启用了 ... 我返回应用程序,Logcat显示给我看 未经许可 调试说明。我再次在运行时点击按钮(进入铃声设置逻辑,因为我已被授予权限),但我再次进入 未经许可 mehod。。

onPermissionsGranted He pulsado ringtoneMenuOpen
onPermissionsDenied Hemos llegado aquí con permisos denegados y 'No volver a mostrar'

这是我的班级结构(仅供参考)

public class Home implements EasyPermissions.PermissionCallbacks{

...
private String[] permission_sounds = {Manifest.permission.WRITE_SETTINGS, Manifest.permission.WRITE_EXTERNAL_STORAGE};
private int RC_permissionSounds = 500;
private Activity act;

..onCreate{
    act = this;
}

//I assign this onClickListener to ringtoneButton
private View.OnClickListener ringtoneMenuOpen(){
        Log.d(TAG, "ringtoneMenuOpen accedemos, tenemos que entrar ahora en solicitar permisos e intentar ");
        soundButtonMode = SoundButtonMode.RIGNTONE;
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.d(TAG, "He pulsado ringtoneMenuOpen"); //Line 1 Logcat
                if (EasyPermissions.hasPermissions(act, permission_sounds)) {
                    new SetSoundAsRingtone(act).execute();
                } else {
                    EasyPermissions.requestPermissions(act, act.getString(R.string.permission_rationale), RC_permissionSounds, permission_sounds);
                }
            }
        };
    }
...
    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        EasyPermissions.onRequestPermissionsResult(requestCode, permissions, grantResults, act);
    }
    @Override
    public void onPermissionsGranted(int requestCode, @NonNull List<String> perms) {
        Log.d(TAG, "onPermissionsGranted");
        buttonRingtone.performClick();
    }
    @Override
    public void onPermissionsDenied(int requestCode, @NonNull List<String> perms) {
        Log.d(TAG, "onPermissionsDenied");//Line 2 Logcat

        if (EasyPermissions.somePermissionPermanentlyDenied(this, perms)) {
            Log.d(TAG, "Hemos llegado aquí con permisos denegados y 'No volver a mostrar'"); //Line 3 Logcat
            new AppSettingsDialog.Builder(this).build().show();
        }
    }
...