android.widget.Switch - on/off event listener?

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I would like to implement a switch button, android.widget.Switch (available from API v.14).

<Switch
    android:id="@+id/switch1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Switch" />

But I'm not sure how to add an event listener for the button. Should it be an "onClick" listener? And how would I know if it is toggled "on" or not?

Switch inherits CompoundButton's attributes, so I would recommend the OnCheckedChangeListener

mySwitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        // do something, the isChecked will be
        // true if the switch is in the On position
    }
});

android.widget.Switch toggled event listener?, Set the listener to this because your class implements compoundbutton like so switch1.setOnCheckedChangeListener(this);. Then add this� android.widget.Switch - on/off event listener? Related. 3. if and else command in android preferences. 11. Android, Checkbox listener in XML? 206. android.widget

Use the following snippet to add a Switch to your layout via XML:

<Switch
     android:id="@+id/on_off_switch"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:textOff="OFF"
     android:textOn="ON"/>

Then in your Activity's onCreate method, get a reference to your Switch and set its OnCheckedChangeListener:

Switch onOffSwitch = (Switch)  findViewById(R.id.on_off_switch); 
onOffSwitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
    Log.v("Switch State=", ""+isChecked);
}       

});

How to add listener for Switch button in Android, How to add listener for Switch button in Android. activity_main.xml CompoundButton; import android.widget.RelativeLayout; import� Podcast: We chat with Major League Hacking about all-nighters, cup stacking, and therapy dogs. Listen now.

For those using Kotlin, you can set a listener for a switch (in this case having the ID mySwitch) as follows:

    mySwitch.setOnCheckedChangeListener { _, isChecked ->
         // do whatever you need to do when the switch is toggled here
    }

isChecked is true if the switch is currently checked (ON), and false otherwise.

Android Switch (ON / OFF) Button with Examples, By default, the android Switch will be in the OFF (Unchecked) state. the Switch is in ON or OFF state and we can handle the Switch click event in activity file using setOnCheckedChangeListener like as shown below. import android. widget. A Switch is a two-state toggle switch widget that can select between two options. Now you can register switch event using setOnCheckedChangeListener method.

Define your XML layout:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.neoecosystem.samplex.SwitchActivity">

    <Switch
        android:id="@+id/myswitch"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content" />

</RelativeLayout> 

Then create an Activity

public class SwitchActivity extends ActionBarActivity implements CompoundButton.OnCheckedChangeListener {

    Switch mySwitch = null;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_switch);


        mySwitch = (Switch) findViewById(R.id.myswitch);
        mySwitch.setOnCheckedChangeListener(this);
    }

    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        if (isChecked) {
            // do something when check is selected
        } else {
            //do something when unchecked
        }
    }

    ****
}

======== For below API 14 use SwitchCompat =========

XML

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.neoecosystem.samplex.SwitchActivity">

    <android.support.v7.widget.SwitchCompat
        android:id="@+id/myswitch"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content" />

</RelativeLayout>

Activity

public class SwitchActivity extends ActionBarActivity implements CompoundButton.OnCheckedChangeListener {

    SwitchCompat mySwitch = null;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_switch);


        mySwitch = (SwitchCompat) findViewById(R.id.myswitch);
        mySwitch.setOnCheckedChangeListener(this);
    }

    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        if (isChecked) {
            // do something when checked is selected
        } else {
            //do something when unchecked
        }
    }
   *****
}

Switch, A Switch is a two-state toggle switch widget that can select between two options. The user may drag the "thumb" back and forth to choose the� Android Listeners are used to capture events. When, for instance, the user interacts with the Android system by clicking on a button, the Listeners would prompt the underlying activity to do the task associated with the button click. Therefore, whenever you want the Android system to perform a task (when an event occurs), Listeners are at work.

The layout for Switch widget is something like this.

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">
    <Switch
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginRight="20dp"
        android:gravity="right"
        android:text="All"
        android:textStyle="bold"
        android:textColor="@color/black"
        android:textSize="20dp"
        android:id="@+id/list_toggle" />
</LinearLayout>

In the Activity class, you can code by two ways. Depends on the use you can code.

First Way

public class ActivityClass extends Activity implements CompoundButton.OnCheckedChangeListener {
Switch list_toggle;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.return_vehicle);

    list_toggle=(Switch)findViewById(R.id.list_toggle);
    list_toggle.setOnCheckedChangeListener(this);
    }
}

public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
    if(isChecked) {
        list_toggle.setText("Only Today's");  //To change the text near to switch
        Log.d("You are :", "Checked");
    }
    else {
        list_toggle.setText("All List");   //To change the text near to switch
        Log.d("You are :", " Not Checked");
    }
}

Second way

public class ActivityClass extends Activity {
Switch list_toggle;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.return_vehicle);

    list_toggle=(Switch)findViewById(R.id.list_toggle);
    list_toggle.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
       @Override
       public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
          if(isChecked) {
             list_toggle.setText("Only Today's");  //To change the text near to switch
             Log.d("You are :", "Checked");
          }
          else {
             list_toggle.setText("All List");  //To change the text near to switch
             Log.d("You are :", " Not Checked");
          }
       }       
     });
   }
}

How to use On Off Switch Button in Android, Android On Off Switch Button Example; Switch Button Click Event; Switch Button Click Listener findViewById(R.id.switch_btn); //Set a CheckedChange Listener for Switch Button sButton. TextView; import android.widget. Android Event Listeners Registration. In android, Event Registration is the process by which an Event Handler gets registered with an Event Listener so that the handler is called when the Event Listener fires the event. Following are the different ways to register event listeners in our android applications.

android.widget.Switch - on/off event listener?, Interruptor hereda CompoundButton atributos 's, por lo que recomiendo el OnCheckedChangeListener mySwitch.setOnCheckedChangeListener(new� Event Listeners − An event listener is an interface in the View class that contains a single callback method. These methods will be called by the Android framework when the View to which the listener has been registered is triggered by user interaction with the item in the UI.

How to Add Click Listener to Android Switch, A Switch is a two-state toggle switch widget that can select between two options. Now you can register switch event using� Overview. Event Listening in Android development is largely centered around the View object.. View Event Listeners. Any View (Button, TextView, etc) has many event listeners that can be attached using the setOnEvent pattern which involves passing a class that implements a particular event interface.

android.widget.Switch - on/off event listener?, android:layout_height="wrap_content" android:text="Switch" /> But I'm not sure how to add an event listener for the button. Should it be an "onClick" listener? Switch widget is just like a button that controls Toggle functionality. Switch is same as our house electricity switches which has Turn On and Turn Off functionality. Switch has a property named as onChanged which will called on Switch click event.

Comments
  • OnClick via XML does actually work - but only for "clicks" on the button, not for "slides".
  • @Johan No trouble. I don't know about you but I wish they named it OnCheckChangedListener, similar to OnItemSelectedListener, since On-Noun-Verb-Listener is an established naming convetion.
  • But when you put the on a fragment for example, that thing always fires whenever you revisit the fragment if you set the switch to On.
  • @Sam What if I want to change the switch to ON or OFF state using method setChcked() method and don't want to execute the onCheckedChanged method? But when user again tap on switch method onCheckedChanged get executed... Is there any way to do this?
  • Buttons have OnCLick, switches do not have OnChange! Well designed Google team!
  • @KZoNE What I did here is used the click listener to change the state & passed the switch to method(in my case API call) & then used the setChecked() method to change the state(like in onFailure/onError in API call). Hope that helps.
  • This is a more clear answer giving you the layout and code behind to match.
  • how to manage multiple switchcompat in the single listener ? Please suggest answer for that
  • don't forget to check buttonView.isPressed()
  • android.widget.Switch does not have onCheckedChanged attirbute. You'll get error: AAPT: error: attribute android:onCheckedChanged not found.
  • Android team really should fix this... What I did instaed is in my LiveData observer, I unregister the onCheck, do my action, then set it back. This only works because UI changes happen on 1 thread (the main thread).