利用系统浏览器下载应用

@Override
public void onClick(View v) {
String url = "http://www.gamept.cn//d/file/game/xiuxian/20150617/宝石大冒险.apk";
Uri uri = Uri.parse(url);

Intent intent = new Intent();
intent.setAction("android.intent.action.VIEW");
intent.setData(uri);
startActivity(intent);
}