How can we make video and voice calls on Android?
Communication with other people is very important and any system that can help more in this matter is considered by users, in the Android system this possibility exists.
 | 4 minute(s) read | Published on: Aug 18, 2021 Updated on: Dec 14, 2021 |
One of the main reasons for designing mobile phones is making calls so that users can interact with other people. Call other users through the network with the push of a button. This article will discuss how to design an Android call rejection system. If you want to know how they implement the possibility of making calls in Android OS, I suggest you follow this article to learn how to set up a phone call.
To set up the phone call feature in Android system, two classes of PhoneStateListener and TelephonyManager are used to monitor and control changes in phone calls.
It should be noted that ACTION_CALL is used to make calls on Android devices.
Even ACTION_DIAL can be used instead of ACTION_CALL to make calls on Android systems.
To call the given number, for example, 010100180091, you must put tel in the URI section, using the setData () method.
How to call the specified number using Android Intent?
1- I use Eclipse IDE to create an Android application.
2- Name it myapplication in the package com.example.phonecalldemo.
3- Modify the src / MainActivity.java file to add a different code.
4- The res/layout / activity_main file must be modified to add the XML component.
5- Change AndroidManifest.xml to get permissions.
All contents and code that are fully included in the file and program are as follows:
6- The res/layout / activity_main.xml file has the following codes:
7- To be able to define two constants, the content of the res/values / strings.xml file is as follows:
8- The contents listed below are also AndroidManifest.xml contents:
9- Run the myapplication program.
10- You must connect your mobile device to the computer beforehand.
11- To be able to run the program from Eclipse, we must open one of the program activity files and click Run on it.
12- Then we are faced with a window that it is better to choose our mobile device.
13- Then, we click on the call button. After clicking on it, we will see that it starts calling.
Learn how to make calls on Android systems using Intent
1- To get the phone number from the user to call it, we need to create an EditText so that the user can enter the phone number he wants.
2- Then, we send the phone number received from the user to ACTION_Dial to perform the call operation.
3- We created a project in Android Studio ( in French: Développement Android Studio ) called PhoneCall-Gsm so that we can make this call through Intents.
4- Necessary changes should be made in the Layout section of the project.
5- Add a Phone tool from the PlainText section to your project.
6- It is better to insert PhoneText as the idea title of this tool.
7- We must add a button to our application layer.
.jpg "One of the main reasons for designing mobile phones is the ability to make calls, so that users can interact with other people. Call other users through the network with the push of a button.")
8- Now, it is time to make changes in the Java coding section. 9- In this case, we must introduce Phone, EditText, and Button to the program.
10- We value them using the onCreate () method.
11- Consider a Listener event for the button.
In the code above, we use the getText () toString () methods to convert the number that the user enters a string and pass it to the number adder.
12- The complete codes that should be in the MainActivity section are as follows.
13- We will implement the project.
14- After running the program, we enter the number.
15- Then, we click on the button to make the call.
The codes that should be in the Active Layer section are as follows. You can also use them:
The code that can be used to set layers in activity_main.xml is as follows:
In this way, it is possible to set up the possibility of making a call in Android apps development, and after receiving the phone number from the user and clicking the call button, the desired number can be called.
Video calling on Android systems
1- We create a new and empty project and put the codes inserted below it.
2- Then, we must put the necessary libraries and dependencies inside the project.
3- In Android Studio, select Firebase from the Tools section, then click Save and retrieve data.
4- Connect to Firebase and select Add the Realtime Database to your app.
5- Go to the Firebase console and make the necessary changes there.
6- The following codes are for user login:
On the login page, the user must select a username and password. The tab can be moved to the video call page.
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