Android 6.0アクセス権問題処理のコアコードであるshouldShowRequestPermissionRationaleの正しい使い方

private void requestPermission(String[] permissions) {
    boolean isMinSdkM = Build.VERSION.SDK_INT < Build.VERSION_CODES.M;
    if (isMinSdkM || permissions.length == 0) {
        PermissionHelper.getInstance().onAllPermissionGranted();
        return;
    }
    ActivityCompat.requestPermissions(this, permissions, 1);
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    for (int i = 0; i < grantResults.length; i++) {
        boolean isTip = ActivityCompat.shouldShowRequestPermissionRationale(this, permissions[i]);
        if (grantResults[i] != PackageManager.PERMISSION_GRANTED) {
            if (isTip) {//                
                requestPermission(PermissionHelper.getInstance().filterPermissions(permissions));
            } else {//                
             //   PermissionMonitorService.start(this);//                 
            }
            return;
        }
    }
    PermissionHelper.getInstance().onAllPermissionGranted();
}