Android开发：调用微信扫一扫功能

public static void gowxScan(Context context){
		try {
            Intent intent = context.getPackageManager().getLaunchIntentForPackage("com.tencent.mm");
            intent.putExtra("LauncherUI.From.Scaner.Shortcut", true);
            context.startActivity(intent);

        } catch (Exception e) {
            ActivityTool.showToast(context, "没有安装微信");
        }
}