Android的 - 传递查看从活动到的AsyncTask类 [英] Android - Passing View from Activity to AsyncTask class

问题描述

MainActivity.java：

private class NetCheck extends AsyncTask<String, Void, Boolean> {
    @Override
    protected Boolean doInBackground(String... args) {
        return cd.isConnectingToInternet();
    }

    protected void onPostExecute(Boolean th) {
        if (th == true) {
            new RemoteLoader(MainActivity.this).execute();
        }
    }
}

RemoteLoader.java：

public class RemoteLoader extends AsyncTask<Void, Void, Void>{
    private View view;

    public RemoteLoader(View context){
        this.view = view;
    }

    @Override
    protected Void doInBackground(Void... Pages) {
             // do in bg
    }

    @Override
    protected void onPostExecute(Void result) {
        // Set title into TextView
        TextView txttitle = (TextView) view.findViewById(R.id.txtProtip);
        txttitle.setText(protip);
    }

}

我试图执行从 MainActivity RemoteLoader 类。但在RemoteLoader包含一些需要膨胀主要布局。

I'm trying to execute RemoteLoader class from MainActivity. But in RemoteLoader contains something that needs to inflate the Main layout.

我如何通过从布局到MainActivity在RemoteLoader这种情况？

How do I pass the Layout from MainActivity to RemoteLoader in this case?

推荐答案

如下传递活动的RemoteLoader，而不是视图

pass an Activity to the RemoteLoader instead of View as follows

private WeakReference<Activity> activity;

public RemoteLoader(Activity context){
    this.activity = new WeakReference<Activity>(context);
}

更新：使用弱引用prevent可能的内存泄漏

Update: Using weak reference to prevent possible memory leaks.

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