Android开发跳转应用市场进行版本更新功能实现

 
    public static boolean isAvilible(Context context, String packageName) {
        // 获取packagemanager
        final PackageManager packageManager = context.getPackageManager();
        // 获取所有已安装程序的包信息
        List<PackageInfo> pinfo = packageManager.getInstalledPackages(0);
        // 用于存储所有已安装程序的包名
        List<String> pName = new ArrayList<String>();
        // 从pinfo中将包名字取出
        if (pinfo != null) {
            for (int i = 0; i < pinfo.size(); i++) {
                String pf = pinfo.get(i).packageName;
                pName.add(pf);
            }
        }
        // 判断pName中是否有目标程序的包名，有true，没有false
        return pName.contains(packageName);
    }

    public static void launchAppDetail(Context mContext, String appPkg, String marketPkg) {
        try {
            if (TextUtils.isEmpty(appPkg)) {
                return;
            }

            Uri uri = Uri.parse("market://details?id=" + appPkg);
            Intent intent = new Intent(Intent.ACTioN_VIEW, uri);
            if (!TextUtils.isEmpty(marketPkg)) {
                intent.setPackage(marketPkg);
            }
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            mContext.startActivity(intent);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

 Uri uri = Uri.parse(url);
 Intent intent = new Intent(Intent.ACTION_VIEW, uri);
 startActivity(intent);