- How to Check for Internet Connection in Android using Kotlin
- Adding required dependencies
- Creating the NetworkMonitorUtil file
- Using NetworkMonitorUtil
- Check Internet Connection Programmatically Android Kotlin
- Check Internet Connection Programmatically In Android With Kotlin
- KOTLIN PART
- How To Check Internet Connection in Android Programmatically
- How To Check Internet Connection in Android Programmatically:
- Kotlin Check Internet Connection
- activity_main.xml
- check internet connection android programmatically
- MainActivity.java
- Check if the Internet is Connected in Kotlin
- Determine the Status of Internet Connection
- Add the Permissions
- Activity_main XML File
- Activity Code in Kotlin
- Проверьте интернет-соединение Android в Kotlin
- 9 ответов
How to Check for Internet Connection in Android using Kotlin
In this tutorial, I’m going to show you how to check the internet connection in your Android app without using any 3rd party library.
Adding required dependencies
Go to your app-level build.gradle file and add the following dependency:
The Local Broadcast Manager will help us to track the changes of internet connection (e.g, from Wi-Fi to cellular, or from Wi-Fi to no connection)
Next, go to the AndroidManifest.xml and add the following permission:
Creating the NetworkMonitorUtil file
Create a new Kotlin file, and give it the name NetworkMonitorUtil.
Then, paste the following code inside:
Because some methods are deprecated in newer versions of Android we’re going to use two different ways to check the internet connection:
For devices with Android 9 (Pie) and above we use NetworkCallback, which has methods to detect when the network is available or not and what type is (Wifi, Cellular e.t.c).
And for devices with Android 8 (Oreo) and below, we use the method CONNECTIVITY_ACTION combine with LocalBroadcastManager to run the code whenever the network state changes.
Using NetworkMonitorUtil
To use the NetworkMonitorUtil, first, you have to initialize it and register the LocalBroadcastManager/NetworkCallback in the onResume() method:
To get the state of the internet connection, use result:
Note: If you have to do changes in the UI, your code needs to be inside a runOnUiThread
And to stop monitoring, unregister the LocalBroadcastManager/NetworkCallback in the onStop() method:
If you have any questions, please feel free to leave a comment below
Источник
Check Internet Connection Programmatically Android Kotlin
In this tutorial, I will tell you, how to check for Internet Connection availability from your Android applications. This is a step-by-step Tutorial in the Kotlin language. Let’s learn How To Check Internet Connection Programmatically In Android Kotlin.
Check Internet Connection Programmatically In Android With Kotlin
1- Create a new Android Studio Project. Name it “Check_Internet_Connection” or you can name it whatever you want.
2- After your project builds successfully, first come to your Android Manifest file and add this permission.
3- Now, come to your activity_main.xml file. Change your default Constraint Layout to a Relative Layout.
4- We will take a Button in our Relative Layout with match_parent width and wrap_content height. After adding some additional attributes our Button widget will be like this.
5- And after that our final activity_main file will look like this.
KOTLIN PART
6- Now, come to your MainActivity.kt file. So, We will take three variable here like this
7- After that, we will register an onClickListener on our Button. check_connection is the id of our button in XML. We will make use of a System Service here.
8- We will use an if-else condition here. With the help of the activeNetworkInfo method, we will check for the current state of the NetworkInfo. If the NetworkInfo is in the connected state we will display a toast message CONNECTED. whereas if the NetworkInfo is not in the connected state then we will display a toast message ” NOT CONNECTED“.
9- And our complete and final MainActivity.kt will be like this.
So I hope now you understand how to check internet connection in android programmatically using Kotlin. You can use any message in your toast that you want to display. I have used a simple button to check the status of the internet connection on the click of the button. You can use any other widget or icon according to your need. And you can use this code anywhere in your app according to your need. Do not forget to add the permission for accessing the Network_State in your Manifest file because it’s necessary permission.
That’s all for this Kotlin check internet connection tutorial. 🙂
OUTPUT
When No Internet Connection is Available
Check Internet Connection Programmatically
Wifi Icon enabled because Wifi connection is available and connected.
Check Internet Connection Programmatically
Источник
How To Check Internet Connection in Android Programmatically
In this tutorial, I will tell you how to find the availability of Internet Connection from your Android applications. This is a step-by-step Tutorial in the Java language. So, let’s learn How To Check Internet Connection in Android Studio programmatically .
How To Check Internet Connection in Android Programmatically:
1- So create a new Android Studio Project. Name it “CheckConnection”. Also, you can name it whatever you want. After the project builds you will have two files. MainActivity.kt and activity_main.xml.
2- After your project builds successfully. Then first come to your AndroidManifest.xml file. and add this permission.
Kotlin Check Internet Connection
activity_main.xml
3- Now come to your activity_main.xml file and change the default Constraint Layout to Relative Layout.
4- We will take a Button in our RelativeLayout. With match_parent width and wrap_content height. After adding some additional attributes our Button widget will be like this.
5- And our final activity_main file will look like this because we only have one button in our activity.
check internet connection android programmatically
MainActivity.java
6- Now. Come to your MainActivity.java file. And under the onCreate method initialize our Button widget.
7- Then. We will register an onClickListener on our Button.
8- Also inside our onClickListener method. We will create an object. Of ConnectivityManager class. We will use a System Service as well.
9- So here we add an if-else condition on our ConnectivityManager class object. Because we use the object to check if the Internet connection is available or not. Because if the connection would be available we will display our Toast message “Internet Available”.
10- And if the Internet is not available. We will display our Toast message “No Internet”.
11- So our final MainActivity.java file will look like this.
So, you can use this code anywhere in your program and learn how to programmatically check the availability of the Internet. You can use the code in an Alert Dialog for a better look don’t forget to add the Network State permission in your AndroidManifest.xml file. Since I have used Button but you can use any other widgets of your choice. This is all for this tutorial :). Comment your Views below. And if you have any suggestions. So ask me.
So, practice Android Studio checks internet connection using this example and it works fine to check internet connection in Android kotlin. Also, it checks internet connection for Both wifi and Data (3G,4G, etc).
OUTPUT
When. Internet Available.
Data Connection. Is Available.
When Internet turned Off.
Источник
Check if the Internet is Connected in Kotlin
Today we will discuss how to check Internet Connection availability from your Android applications. This is a step-by-step Tutorial in the Kotlin language. Let’s learn How To Check the Internet is Connected in Kotlin.
Determine the Status of Internet Connection
In android, we can determine the internet connection status easily by using the method of ConnectivityManager object.
Following is the code snippet of using in the ConnectivityManager class to know whether the internet connection is available or not.
Below we are going to create a simple Activity to determine internet connectivity. It contains a button and we check for connectivity when we click on it. In the below image you can see that in case of no Internet, a Toast message will appear “Network Not Available” by clicking on the button.
If the internet is connected, a message will display “Network Available“ as you can see in the following image
Add the Permissions
First, come to your Android Manifest file and add all these permission in the AndroidManifest.xml file.
Activity_main XML File
Now, come to your activity_main.xml file. Change your default Constraint Layout to a Relative Layout.
We will take a Button in our Relative Layout with wrap_content width and wrap_content height. After adding some additional attributes our Button widget will be like this.
Activity Code in Kotlin
Now, come to your MainActivity.kt file. So, We will use an if-else condition here. With the help of the activeNetworkInfo method, we will check for the current state of the NetworkInfo. If the NetworkInfo is in the connected state we will display a toast message “Network Available“. whereas if the NetworkInfo is not in the connected state then we will display a toast message “Network Not Available“.
So I hope now you understand how to check the Internet is Connected in Kotlin. You can use any message in your toast that you want to display. I have used a simple button to check the status of the internet connection with the click of the button. You can use this code anywhere in your app according to your need and do not forget to add the permission for accessing the Network_State in your Manifest file because it’s necessary permission.
If you have any questions, feel free to ask in the comments section below.
Источник
Проверьте интернет-соединение Android в Kotlin
Я попробовал ответ из этого (принятый ответ). Я могу использовать метод «PING», но пользовательский интерфейс стал черным, поскольку он говорит, что заблокирует поток пользовательского интерфейса. Это выглядело не очень хорошо и вызывало беспокойство, поэтому я попытался использовать второй метод «Подключение к сокету в Интернете», но я не знаю, как использовать этот класс в Котлине.
Это результат конвертации Java в Kotlin от Android Studio
Но я не знаю, как его использовать . Я попробовал так:
Это не работает и приводит к ошибке. Там написано, что я должен пройти «Потребитель».
У меня вопрос Как использовать этот класс ?
9 ответов
Назовите AsyncTask таким образом, он должен работать. Вам не нужно ничего менять в своей интернет-проверке AsyncTask. По сути, вам нужно передать объект, который реализует интерфейс Consumer, определенный в классе InternetCheck.
Я изменил ваш класс к этому
Таким образом, вы можете использовать лямбда-функцию, и вам также не придется иметь дело с проверкой нуля там:
Проверьте интернет-соединение в Android Kotlin
Попробуйте этот полезный метод, чтобы проверить наличие интернета.
Надеюсь это поможет.
Вы можете использовать это так:
Для получения дополнительной информации вы можете увидеть эту тему: https://youtrack.jetbrains.com/issue/KT-7770
Добавьте эти разрешения сверху в Manifest
И эта функция должна сделать свое дело. Он вернет логическое значение в зависимости от его подключения
Он имеет устаревший метод, а также последний метод, основанный на вашей версии API.
Обновить: Начиная с Android 10, использование класса NetWorkInfo и его методов устарел, теперь вы должны использовать класс ConectivityManager и getNetworkCapabilities () метод из NetworkCapabilities Class .
Источник
