You can check Android official documentation for complete list of attributes and related methods which you can use to change these attributes are run time. The value for this attribute must be the name of the method you want to call in response to a click event. In android, CheckBox control allow users to change the state of control either Checked or Unchecked but the radio button cannot be unchecked once it is checked. To define the click event handler for a button, add the android:onClick attribute to the In android, we can create RadioButton control in two ways either in the XML layout file or create it in the Activity file programmatically. It is used to set the background color for radio button control. The most common use of radio button is in Quiz Android App code. To create each radio button option, create a RadioButton in your layout. Radio buttons allow the user to select one option from a set. Android RadioButton. RadioButton is generally used with RadioGroup. In android, we can define RadioButton click event in two ways either in the XML layout file or create it in Activity file programmatically. The value for this attribute must be the name of the method you want to call in response to a click event. options side-by-side. You can click on a Button, long press, etc. The Activity hosting the layout must then implement the In this video we will learn, how to set OnClickListeners for multiple buttons and handle them all in one onClick method. On Android, the checkbox control allows users to change the control status, either checked or unchecked, but the radio button cannot be after it has been selected. In android, we can create RadioButton control programmatically in activity file based on our requirements. The Activity hosting the layout must then implement the corresponding method. If you observe above code we created a multiple RadioButton controls, one TextView control and one Button control in XML Layout file. must have a signature exactly as shown above. element in your XML To define the click event handler for a button, add the android:onClick attribute to the element in your XML layout. The value of android:onClick attribute must be the name of method which we need to call in response to a click event and the Activity file which hosting XML layout must implement the corresponding method. In case if you are not aware of creating an app in android studio check this article Android Hello World App. Kotlin setOnClickListener for Button Android Button widget is a UI element generally used to receive user actions as input. In this tutorial, we shall learn to set OnClickListener for Button. – MrCode Apr 20 '15 at 18:50 1 So I recommend to refer official documentation for Android application development in case you are going to develop a sophisticated apps. It’s the name of the method to invoke when the radio button clicked. Generally, we can use RadioButton controls in an android application to allow users to select only one option from the set of values. Once a RadiaButton is checked by user it can’t be … android:maxWidth RadioButton is a two states button which is either checked or unchecked. radio button can be selected at a time. android.support.v7.app.AppCompatActivity; Create Android RadioButton in XML Layout & Activity File, It is used to uniquely identify the control, It is used to specify the current state of radio button. : 2: Modify the default content of res/layout/activity_main.xml file to include Android UI control. RadioButon is a two state button that can be checked or unchecked. Following is the pictorial representation of using RadioButton control in android applications. optional sets that are mutually exclusive if you think that the user needs to see all available Once a radio button is checked, it cannot be marked as unchecked by user. In Activity that hosts our XML layout file, we need to implement click event method like as shown below.     . Code – Button.setOnClickListener() Following code helps you to set on-click listener for Button. The user can press or click on the radio button to make it select. You should use radio buttons for The value of android:onClick attribute must be the name of the method which we need to call in response to a click event and the Activity file which hosting XML layout must implement the corresponding method. Call InitializeRadioButtons from the form's constructor or … Generally, during the launch of our activity, onCreate() callback method will be called by the android framework to get the required layout for an activity. corresponding method. Following is the sample way to define RadioButton control using RadioGroup in the XML layout file in the android application. android:textColor: Used to set color of the text. In case, if we want to change the state of RadioButton to ON (Checked), then we need to set android:checked = “true” in our XML layout file. We can change the default state of RadioButton by using android:checked attribute. Following is the example of defining a multiple RadioButton controls, one TextView control and one Button control in RelativeLayout  to get the selected values of RadioButton controls when we click on Button in the android application. To make click event work add android:onClick attribute to the Button element in your XML layout. RadioGroup. Following is the example of defining a RadioButton click event using android:onClick attribute in XML layout file. 4. Radio buttons respond to both onchange and onclick events in JavaScript. Following are the some of commonly used attributes related to RadioButton control in android applications. There are many more event listeners available as a part of Viewclass like OnHoverListener, OnDragListener etc which may be needed for your application. android:textStyle: Used to set style of the text. The value for this attribute must be the name of the method you want to call in response to a click event. However, because radio buttons are mutually exclusive, you must group them together inside a Inherited from android.view.ViewClass − Following are the important attributes related to RadioGroup control. Android Radio Button attributes. "Python":"";                 Toast.makeText(getApplicationContext(), result, Toast.LENGTH_SHORT).show();             }         });     }     public void onRadioButtonClicked(View view) {         boolean checked = ((RadioButton) view).isChecked();         String str="";         // Check which radio button was clicked         switch(view.getId()) {             case R.id.rdbAndroid:                 if(checked)                 str = "Android Selected";                 break;             case R.id.rdbAngular:                 if(checked)                 str = "AngularJS Selected";                 break;             case R.id.rdbJava:                 if(checked)                 str = "Java Selected";                 break;             case R.id.rdbPython:                 if(checked)                 str = "Python Selected";                 break;         }         Toast.makeText(getApplicationContext(), str, Toast.LENGTH_SHORT).show();     } }. You can initiate this method easily like public void setOnCheckedChangeListener (new CompoundButton. The user can press or click the radio button to select it. In android, we can define RadioButton click event programmatically in Activity file rather than XML layout file. It is used to set the padding from left, right, top and bottom. android:textSize: Used to set size of the text. If a radio button is unchecked then a user can check it by simply clicking on it. Content and code samples on this page are subject to the licenses described in the Content License. Used to specify the current state of radio button: android:onClick: It’s a name of the method to invoke when the radio button clicked. If it's not necessary to show all options side-by-side, use a spinner instead. In this section, you will create two mutually-exclusive radio buttons (enabling one disables the other), using the RadioGroup and RadioButton widgets. In android, Radio Button is a two-states button that can be either checked or unchecked and it’s the same as CheckBox control, except that it will allow only one option to select from the group of options. Create a new android application using android studio and give names as RadioButtonExample. click event for both radio buttons: The method you declare in the android:onClick attribute The user can press or click on the radio button to make it select. Now open an activity_main.xml file from \res\layout path and write the code like as shown below,