java - 在 AsyncTask 中使用 publishProgress 方法时搞砸了

Question

我正在尝试实现简单的内部数据存储代码。我想在其中显示一些后台进程的 ProgressDialog，在调用 publishProgress() 时该进程将递增 5。但它给我如下错误，

The method publishProgress(R.integer...) in the type AsyncTask<String,R.integer,String> is not applicable for the arguments (int)

代码如下。

public class loadSomeStuff extends AsyncTask<String, integer, String>
{
    ProgressDialog dailog;              
    protected void onPreExecute()
    {
        //example of setting up something
        dailog=new ProgressDialog(MainActivity.this);
        dailog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        dailog.setMax(100);
        dailog.show();
    }

    @Override
    protected String doInBackground(String... params) {
        // TODO Auto-generated method stub          
        String collected=null;
        FileInputStream fis=null;

        for(int i=1; i<=20; i++)
        {
            publishProgress(5);
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        dailog.dismiss();
        try {
            fis=openFileInput(FileName);
            byte[] dataArray = new byte[fis.available()];
            while(fis.read(dataArray)!= -1)
            {
                collected=new String(dataArray);
            }
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            try {
                fis.close();
                return collected;
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

        return null;
    }

    protected void onProgressUpdate(Integer...progress)
    {
        dailog.incrementProgressBy(5);

    }
    protected void onPostExecute(String result)
    {
        DataResults.setText(result);
    }

}

Answer 1

泛型不能使用值类型，因此您的 AsyncTask 需要使用 Integer:

extends AsyncTask<String, Integer, String>