GetSystemService DOWNLOAD_SERVICE in non activity

In my simple method in non activity class, I am using code:

mgr=(DownloadManager)mContext.getSystemService(DOWNLOAD_SERVICE); 

in non activity class, my constructor looks like:

public Download23(Context context){
    this.mContext=context;
}

But compilator won't accept DOWNLOAD_SERVICE strin开发者_开发知识库g. Do you know how to solve that?

Instead you could just write

(DownloadManager)mContext.getSystemService(Context.DOWNLOAD_SERVICE); 

That would compile.

DOWNLOAD_SERVICE is a constant of Context class.

you can use

(DownloadManager)mContext.getSystemService(Context.DOWNLOAD_SERVICE);