Android Custom Check Box

On Eclipse and start a new Android project. Create a folder called /xml in the /res directory. Add three XML-based resources to the /res/xml folder, two that represent the drawing code for the actual checkbox and a third that is the state selector.

 checked.xml

<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android=http://schemas.android.com/apk/res/android
 android:shape="rectangle">
<gradient android:startColor="#ffff0000" android:endColor="#ff000000" android:angle="270"/>
<stroke android:width="4px" android:color="#ffc0c0c0" />
<size android:height="20dp" android:width="20dp"/>
</shape>

Unchecked.xml

<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
 android:shape="rectangle">
<gradient android:startColor="#ff585858" android:endColor="#ff000000" android:angle="270"/>
<stroke android:width="4px" android:color="#ffc0c0c0" />
<size android:height="20dp" android:width="20dp"/>
</shape>

custom_checkbox.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="true"
android:drawable="@xml/checked" />
<item android:state_pressed="true"
 android:drawable="@xml/checked" />
<item android:drawable="@xml/unchecked" />
</selector>

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textSize="20dip"
        android:gravity="left"
        android:padding="10dip"
        android:text="Check It!" />
    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textSize="16dip"
        android:gravity="left"
        android:padding="10dip"
        android:text="Here is a checkbox..." />
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="left"
        android:orientation="horizontal">
     <CheckBox
         android:id="@+id/checkbox1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_gravity="center"
         android:button="@xml/custom_checkbox"/>
     <TextView
         android:id="@+id/textview1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:textSize="14dip"
         android:gravity="center"
         android:padding="10dip"
         android:text="(unchecked)" />
 </LinearLayout>
 <TextView
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:textSize="16dip"
         android:gravity="left"
         android:padding="10dip"
         android:text="And here is another..." />
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="left"
        android:orientation="horizontal">
     <CheckBox
         android:id="@+id/checkbox2"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_gravity="center"
         android:button="@xml/custom_checkbox"/>
     <TextView
         android:id="@+id/textview2"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:textSize="14dip"
         android:gravity="center"
         android:padding="10dip"
         android:text="(unchecked)" />
 </LinearLayout>
</LinearLayout>
Main.java
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.CheckBox;
import android.widget.TextView;

public class Main extends Activity implements OnClickListener {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        findViewById(R.id.checkbox1).setOnClickListener(this);
        findViewById(R.id.checkbox2).setOnClickListener(this);
    }

 
 public void onClick(View v) {
  TextView tv;
  if (v.getId()==R.id.checkbox1) {
   tv = (TextView)findViewById(R.id.textview1);
  } else {
   tv = (TextView)findViewById(R.id.textview2);
  }
  if (((CheckBox)v).isChecked()) {
   tv.setText("(checked)");
  } else {
   tv.setText("(unchecked)");
  }
 }
}