Android Switch




Android Switch


  • Static Switch Creation in Android.

  • Dynamic Switch Creation in Android.

  • Switch Events in Android.



Static Switch Creation in Android.


Step 1 : Select File -> New -> Project -> Android Application Project (or) Android Project. Fill the forms and click "Finish" button. If you have any doubt regarding create a new project Click Here.
Step 2 : Open res -> layout -> activity_main.xml (or) main.xml and add following code :

 <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" >

     <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="60dp"
        android:textSize="18sp"
        android:textColor="#4169E1"
        android:text="Static Switch" />

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

 </RelativeLayout>

 Step 3 : Open src -> package -> MainActivity.java and add following code :

 package com.gudivada.hemanthsomaraju;

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

 public class MainActivity extends Activity {

Switch switch_controller;

     @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
     
        switch_controller = (Switch) findViewById(R.id.switch1);
     
        switch_controller.setOnCheckedChangeListener(new OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub

if(isChecked == true)
Toast.makeText(getBaseContext(), "ON Stage", Toast.LENGTH_SHORT).show();
else
Toast.makeText(getBaseContext(), "OFF Stage", Toast.LENGTH_SHORT).show();
}
});
    }
}

 Step 4 : Open AndroidManifest.xml and add following code :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.gudivada.hemanthsomaraju"
    android:versionCode="1"
    android:versionName="1.0" >

     <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />

     <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.gudivada.hemanthsomaraju.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                 <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

 </manifest>

Step 5 : Our output will be like this :

 



Dynamic Switch Creation in Android.


Step 1 : Select File -> New -> Project -> Android Application Project (or) Android Project. Fill the forms and click "Finish" button. If you have any doubt regarding create a new project Click Here.
Step 2 : Open res -> layout -> activity_main.xml (or) main.xml and add following code :

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/rl"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

     <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="60dp"
        android:textSize="18sp"
        android:textColor="#FF0000"
        android:text="Dynamic Switch" />

 </RelativeLayout>

 Step 3 : Open src -> package -> MainActivity.java and add following code :

 package com.gudivada.hemanthsomaraju;

 import android.os.Bundle;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.RelativeLayout;
import android.widget.RelativeLayout.LayoutParams;
import android.widget.Switch;
import android.widget.Toast;
import android.app.Activity;

 public class MainActivity extends Activity {

 RelativeLayout rl;
Switch switch_controller;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
     
        rl = (RelativeLayout) findViewById(R.id.rl);
        switch_controller = new Switch(MainActivity.this);
        switch_controller.setText("Switch");
     
        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams
        (LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
        params.addRule(RelativeLayout.CENTER_IN_PARENT);
        switch_controller.setLayoutParams(params);
     
        rl.addView(switch_controller);
     
        switch_controller.setOnCheckedChangeListener(new OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub

if(isChecked == true)
Toast.makeText(getBaseContext(), "ON Stage", Toast.LENGTH_SHORT).show();
else
Toast.makeText(getBaseContext(), "OFF Stage", Toast.LENGTH_SHORT).show();
}
});
    }
}

 Step 4 : Open AndroidManifest.xml and add following code :

 <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.gudivada.hemanthsomaraju"
    android:versionCode="1"
    android:versionName="1.0" >

     <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />

     <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.gudivada.hemanthsomaraju.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                 <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

 </manifest>


Step 5 : Our output will be like this :

 





Switch Events in Android.


Step 1 : Select File -> New -> Project -> Android Application Project (or) Android Project. Fill the forms and click "Finish" button. If you have any doubt regarding create a new project Click Here.
Step 2 : Open res -> layout -> activity_main.xml (or) main.xml and add following code :

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/rl"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

     <Switch
        android:id="@+id/switch1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="50dp"
        android:textOff="Show"
        android:textOn="Hide" />

 </RelativeLayout>

 Step 3 : Open src -> package -> MainActivity.java and add following code :

 package com.gudivada.hemanthsomaraju;

 import android.os.Bundle;
import android.app.Activity;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.RelativeLayout.LayoutParams;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.Switch;

 public class MainActivity extends Activity {

 RelativeLayout rl;
Switch switch_controll;
ImageView image;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
     
        rl = (RelativeLayout) findViewById(R.id.rl);
        switch_controll = (Switch) findViewById(R.id.switch1);
        image = new ImageView(MainActivity.this);
     
        image.setImageResource(R.drawable.ic_launcher);
        RelativeLayout.LayoutParams param = new RelativeLayout.LayoutParams
        (LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
        param.addRule(RelativeLayout.CENTER_IN_PARENT);
        image.setLayoutParams(param);
     
        switch_controll.setOnCheckedChangeListener(new OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub

if(isChecked == true)
rl.addView(image);
else
rl.removeView(image);
}
});
    }  
}

 Step 4 : Open AndroidManifest.xml and add following code :

 <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.gudivada.hemanthsomaraju"
    android:versionCode="1"
    android:versionName="1.0" >

     <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />

     <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.gudivada.hemanthsomaraju.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                 <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

 </manifest>

Step 5 : Our output will be like this :