JbmnplsAsyncTaskBase.java

package com.jobmineplus.mobile.widgets;

import android.app.Activity;
import android.os.AsyncTask;

public abstract class JbmnplsAsyncTaskBase<TParams, TProgress, TResult> 
                            extends AsyncTask<TParams, TProgress, TResult>{
    //===============
    //  Declaration
    //===============
    private Activity activity;
    private boolean isRunning = false;
    
    //===============
    //  Constructor
    //===============
    public JbmnplsAsyncTaskBase(Activity activity) {
        attach(activity);
    }
    
    //==================
    //  Public Methods
    //==================
    public void attach(Activity activity) {
        this.activity = activity;
        if (activity == null) {
            onActivityDetached();
        } else {
            onActivityAttached();
        }
    }
    
    public void detach() {
        this.activity = null;
    }
    
    public boolean isRunning() {
        return isRunning;
    }
    
    //=====================    
    //  Protected Methods
    //=====================
    protected void onActivityAttached() {}
    protected void onActivityDetached() {}
    
    protected Activity getActivity() {
        return activity;
    }
    
    //====================
    //  Override Methods
    //====================
    @Override
    protected void onPreExecute() {
        isRunning = true;
    }
 
    @Override
    protected void onPostExecute(TResult result) {
        isRunning = false;
    }
 
    @Override
    protected void onCancelled() {
        isRunning = false;
    }
}