CODEWITHSUNDEEP
javaandroidtogglebutton
Mostafiz Rahman
Mostafiz Rahman

Reputation: 8522

ToggleButton not working

I'm new to android. I tried to create a simple toggle button and catch it's state change. But it crashes when I run it on my device.

Here is the MainActivity.java code:

package com.example.addimagebutton;

import android.os.Bundle;
import android.app.Activity;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.Toast;
import android.widget.ToggleButton;

public class MainActivity extends Activity {

    private ToggleButton tbSwitch;

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

        tbSwitch = (ToggleButton) findViewById(R.id.swButton);
        tbSwitch.setOnCheckedChangeListener(toggleListener);
    }

    OnCheckedChangeListener toggleListener = new OnCheckedChangeListener() {

        @Override
        public void onCheckedChanged(CompoundButton buttonView,
                boolean isChecked) {
            // TODO Auto-generated method stub
            if (isChecked) {
                Toast.makeText(getApplicationContext(), "On",
                        Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(getApplicationContext(), "Off",
                        Toast.LENGTH_SHORT).show();
            }
        }
    };
}

Here is activity_main.xml code:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <Switch
        android:id="@+id/swButton"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Switch"
        android:textOff="Off"
        android:textOn="On" />

</LinearLayout>

I tried to run this code without the listener objects.(commenting those) But it gave me the same result.

Upvotes: 0

Views: 1191

Answers (4)

kalyan pvs
kalyan pvs

Reputation: 14590

You are casting a switch to Toggle Button so it gives you ClassCastException..

Change this 

 <Switch
    android:id="@+id/swButton"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Switch"
    android:textOff="Off"
    android:textOn="On" />

into

<ToggleButton
    android:id="@+id/swButton"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Switch"
    android:textOff="Off"
    android:textOn="On" />

Upvotes: 2

Aleizdein
Aleizdein

Reputation: 404

in your xml you should use ToggleButton instead of Switch - it should look like this:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<ToogleButton
    android:id="@+id/swButton"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Switch"
    android:textOff="Off"
    android:textOn="On" />

Upvotes: 0

Nambi
Nambi

Reputation: 12042

Change switch to ToggleButton

   <ToggleButton 
        android:id="@+id/swButton"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Switch"
        android:textOff="Off"
        android:textOn="On" />

Upvotes: 0

M D
M D

Reputation: 47817

Used ToggleButton instead of Switch like

   <ToggleButton
    android:id="@+id/swButton"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Switch"
    android:textOff="Off"
    android:textOn="On"" />

Becoz your layout contains Switch and you cast it with ToggleButton. That's wrong

Upvotes: 1

Related Questions