在异步任务中无法调用view

Question

在Asynctask类中调用另一个类的view，但是没成功，请帮忙。

异步任务：

private class parseSite extends AsyncTask<String, Void, List<Integer>> {

    protected List<Integer> doInBackground(String... arg) {
     List<Integer> output = new ArrayList<Integer>();
        try {
            htmlHelper hh = new htmlHelper(new URL(arg[0]));
            output = hh.htmlHelper(arg[0]);
        } catch (Exception e) {
            System.out.println("Error");
        }
        return output;
    }

    protected void onPostExecute(List<Integer> exe) {

        graph salesView = new graph();
        View chartView = salesView.getView(this);
        chartView.setLayoutParams(new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.FILL_PARENT,
                LinearLayout.LayoutParams.FILL_PARENT, 1f));
        LinearLayout layout = (LinearLayout) findViewById(R.id.linearview);

        layout.addView(chartView, 0);

    }
}

activity的graph：

public class graph {

public View getView(Context context) (...etc.)

谢谢:-D

Answer 1

设置一个handler，当执行需要更改ui的时候，通过handler.sentMessage去通知handle里面去更改UI.