java - 如何避免在 AsyncTask 中传递过多的输入参数？

Question

我有一个 AsyncTask，我需要将多个参数传递给我的构造函数。我知道传递太多参数是不好的做法，最好将方法分成更小的 block 以避免这种情况，但我不允许破坏该方法，所以我唯一的方法是找到一种替代方法以更好的方式传递参数。在我的 AsyncTask 中，我创建了一个构造函数。

是否可以创建一个带有值对象的模型类并传递它们？我需要 getter 和 setter 吗？

 class UpdateAsyncTask extends AsyncTask<Void, Void, Void> {

        private String productId;
        int mutationAmount;
        boolean isOpeningStock;
        FlightLegIdentifier fli;
        String crew;
        String tabletId;

        UpdateAsyncTask(final String productId, final int mutationAmount, final boolean isOpeningStock,
                         final String flightKey,
                         final FlightLegIdentifier fli,
                         final String crew,
                         final String tabletId,
                         final AirFiApplication airFiApplication) {

            this.productId = productId;
            this.mutationAmount = mutationAmount;
            this.isOpeningStock = isOpeningStock;
            this.fli = fli;
            this.tabletId = tabletId;
            this.crew = crew;
        }

        @Override
        protected void onPostExecute(Void aVoid) {
            super.onPostExecute(aVoid);
            productStockAdapter.notifyDataSetChanged();
        }

        @Override
        protected Void doInBackground(Void... params) {
            StockUtils.saveMutation(productId, mutationAmount, isOpeningStock, flightKey, fli, crew,
            tabletId, getAirFiApplication());
            return null;
        }
    }

Answer 1

您可以创建一个模型类并将其作为参数传递给AsyncTask

这是一个例子:

 private static class ModelClass {
    int length;
    int height;

    ModelClass(int l, int h) {
        this.length = l;
        this.height = h;
    }
}

定义AsyncTask任务

 private class MyTask extends AsyncTask <ModelClass, Void, Void> {


    @Override
     protected void onPreExecute(){

        }

    @Override
    protected void doInBackground(ModelClass... params) {
        int length = params[0].length;
        int height = params[0].height;
        ...
        //here u can perform your saveMutation() function using the parameters...
    }

    @Override
        protected void onPostExecute(Void aVoid) {
            super.onPostExecute(aVoid);
        }
}

使用Aysnctask

 //Initialize model class
ModelClass params = new ModelClass(10,10);

//pass it to asynch tash
MyTask myTask = new MyTask();
myTask.execute(params);