根据content找到对应的activity

根据content找到对应的activity

//根据context查找activity
public static Activity findActivity(Context context) {
    if (context instanceof Activity) {
        return (Activity) context;
    }
    else if (context instanceof ContextWrapper) {
        return findActivity(((ContextWrapper) context).getBaseContext());
    }
    else {
        return null;
    }
}