Android 异步任务的封装

public abstract class BaseApiTask extends AsyncTask<Object, Void, TaskData> {

    public interface ApiTaskCallback {
        void onApiTaskListSuccess(BaseApiTask task, TaskData result);
        void onApiTaskListError(BaseApiTask task,ServerApi.ApiCallException e);
    }

    public ApiTaskCallback mCallback;

    public Context mContext;
    //public ProgressDialog mDialog;
    public ServerApi.ApiCallException mException;

    public BaseApiTask(Context context) {
        this.mContext = context;
        //this.mDialog = new ProgressDialog(context);
    }

    @Override
    protected void onPreExecute() {
        //this.mDialog.setMessage(mContext.getResources().getString(R.string.loading));
        //this.mDialog.show();
    }

    @Override
    protected TaskData doInBackground(Object... objects) {
        try {
            return doWork(objects);
        } catch (ServerApi.ApiCallException e) {
            mException = e;
        }
        return null;
    }

    @Override
    protected void onPostExecute(TaskData result) {
        //if (mDialog.isShowing()) mDialog.dismiss();
        if (mException == null) {
            onResult(result);
        } else {
            // 公共错误处理

            onError(mException);
        }
    }

    public abstract TaskData doWork(Object... objects) throws ServerApi.ApiCallException;
    public abstract void onResult(TaskData result);
    public abstract void onError(ServerApi.ApiCallException e);
}