How to get the package name of the app which access content provider of my app?

Actually i want some kind of Broadcast when any other app fetches the data from the content provider shared by my app

you can use Binder.getCallingUid() to get uid of calling application. then use getPackageManager().getNameForUid(uid) to get package name of calling app.

Example:

@Override
    public Uri insert(Uri uri, ContentValues values) {
        int code = sUriMatcher.match(uri);
        String callingPackageName = getContext().getPackageManager().getNameForUid(
                Binder.getCallingUid());
        Log.d(TAG, "calling Package Name::" + callingPackageName);

        if (callingPackageName.equals(PKG_MY_PACKAGE)) {
           //do what you want
        }
        .
        .
        .
        return uri;
    }