How to check programmatically if an application is installed or not in Android?

Question

We have installed applications programmatically.

1. If the application is already installed in the device the application is open automatically.
2. Otherwis

Answer 1

@Egemen Hamutçu s answer in kotlin B-)

    private fun isAppInstalled(context: Context, uri: String): Boolean {
        val packageInfoList = context.packageManager.getInstalledPackages(PackageManager.GET_ACTIVITIES)
        return packageInfoList.asSequence().filter { it?.packageName == uri }.any()
    }