使用相同的AsyncTask更新不同的看法 [英] Use the same AsyncTask to update different views

问题描述

我有6个不同的活动按钮。单击该按钮的功能几乎根据活动不同PARAMS相同的任务。

I have a button on 6 different Activities. Clicking on that button does almost the same task with different params depending on the Activity.

这将使用来完成的的AsyncTask 和 onPostExecute（）按钮状态将被改变。

This will be done using an AsyncTask and in onPostExecute() the button state will be changed.

someButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        new Task().execute("param1", "param2");
    }
}

private class Task extends AsyncTask<String, Void, String> {

    @Override
    protected String doInBackground(String... params) {

        //background task using params[0], params[1]
        return "success" or "error";
    }

    @Override
    protected void onPostExecute(String result) {

        if (result == "success") {
            //change the someButton state
        }else{
            //show an error message
        }
}

而不必在所有的6项活动相同的AsyncTask的，我怎么可以用一个单一的AsyncTask从所有的活动，改变各自的看法？的

Instead of having the same AsyncTask in all the 6 Activities, how can I use a single Asynctask from all the Activities and change the respective view?

推荐答案

您应该创建任务，与方法的onSuccess，onFailure处并覆盖它们。

You should create Task, with methods onSuccess, onFailure and override them.

public class Task extends AsyncTask<String, Void, String> {

    @Override
    protected String doInBackground(String... params) {

        //background task using params[0], params[1]
        return "success" or "error";
    }

    @Override
    protected void onPostExecute(String result) {

        if (result == "success") {
            onSuccess(result);
        }else{
            onFailure(result);
        }
    }

    protected void onSuccess(String result) {};
    protected void onFailure(String result) {};
}

，然后在活动中使用这样的：

and then in activity use it like this:

someButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        new Task(){
            @Override
            protected void onSuccess(String result){
                // do what you want
            }
            @Override
            protected void onFailure(String result){
                // do what you want
            }
        }.execute("param1", "param2");
    }
}

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