你要做的是检查packagemanager是否真的安装了所需的应用程序，如果安装了-用你给它的值升级googleMap应用程序。如果没有，请将用户重定向到play store进行安装。

private boolean isAppInstalledOrNot(String uri) {
    PackageManager pm = getPackageManager();
    boolean app_installed = false;
    try {
        pm.getPackageInfo(uri, PackageManager.GET_ACTIVITIES);
        app_installed = true;
    } catch (PackageManager.NameNotFoundException e) {
        Log.w("TAG","Exception :"+e.getMessage());
    }
    return app_installed;
}

随信寄去

Uri uri = Uri.parse("com.google.android.apps.maps");

所以

boolean isAppInstalled = isAppInstalledOrNot(uri);

然后

if(isAppInstalled){
// send the lat and long and promote the Google Maps app
}else{ 
        Uri uri = Uri.parse("market://details?id=com.google.android.apps.maps");
        Intent goToMarket = new Intent(Intent.ACTION_VIEW, uri);
        Toast.makeText(this, "Google Maps not Installed",
                Toast.LENGTH_SHORT).show();
        startActivity(goToMarket);
}

如果您想在浏览器或任何其他可以处理的应用程序中打开它

Intent openNav= new Intent(Intent.ACTION_VIEW, Uri
    .parse("http://maps.google.com/maps?saddr="
            + Constants.latitude + ","
            + Constants.longitude + "&daddr="
            + latitude + "," + longitude));
      startActivity(openNav);

注意这里的经纬度也要更换。