How to block my app if there is no internet [duplicate]

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How to block my app if there is no internet [duplicate]

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#1 by (4 votes)

2

I'm creating an application that needs internet, If this person's cell phone is without internet, the application would not start because it would only open if you were on the internet. How can someone help you?

java android

asked by anonymous 18.08.2017 / 22:10

1 answer

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score 4 · Accepted Answer

A simple way is to let the user enter the application and inside you to check if the connection exists. If there is no internet connection, use the finish() method to terminate the application. See:

if(!isOnline()){
   finish();
}

A simple method to check is using ConnectivityManager :

public boolean isOnline() {
    ConnectivityManager cm = (ConnectivityManager) 
         getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo netInfo = cm.getActiveNetworkInfo();
    return netInfo != null && netInfo.isConnected();
}

Here you have a question about internet connection test effective that maybe Ramaral's answer can shed some light on the details.

Kotlin would look like this:

fun isOnline(): Boolean {
    val cm = getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
    val netInfo = cm.activeNetworkInfo
    return netInfo != null && netInfo.isConnected
}

To use this function in Kotlin, it follows the same logic as JAVA.