Android - Slider Sample Code

Screen

Layout

<?xml version="1.0" encoding="utf-8"?>

<AbsoluteLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:orientation="vertical"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent">

<TextView

android:id="@+id/widget35"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Red"

android:layout_x="42px"

android:layout_y="30px"></TextView>

<SeekBar android:id="@+id/SeekBar1" 

android:layout_width="wrap_content" 

android:layout_height="wrap_content"

android:max="255"

android:minWidth="250px"

android:layout_x="42px"

android:layout_y="55px">

</SeekBar>

<TextView

android:id="@+id/widget36"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Green"

android:layout_x="42px"

android:layout_y="130px"></TextView>

<SeekBar android:id="@+id/SeekBar2" 

android:layout_width="wrap_content" 

android:layout_height="wrap_content"

android:max="255"

android:minWidth="250px"

android:layout_x="42px"

android:layout_y="155px">

</SeekBar>

<TextView

android:id="@+id/widget37"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Blue"

android:layout_x="42px"

android:layout_y="230px"></TextView>

<SeekBar android:id="@+id/SeekBar3" 

android:layout_width="wrap_content" 

android:layout_height="wrap_content"

android:max="255"

android:minWidth="250px"

android:layout_x="42px"

android:layout_y="255px">

</SeekBar>

<TextView

android:id="@+id/txtMessage"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Enrichware"

android:layout_x="42px"

android:layout_y="330px"></TextView>

</AbsoluteLayout>

Java Code

package com.color;

import android.app.Activity;

import android.graphics.Color;

import android.os.Bundle;

import android.widget.EditText;

import android.widget.SeekBar;

import android.widget.SeekBar.OnSeekBarChangeListener;

import android.widget.TextView;

public class ChangeColor extends Activity {

SeekBar redBar;

SeekBar greenBar;

SeekBar blueBar;

TextView msg;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

msg = (TextView) findViewById(R.id.txtMessage);

redBar = (SeekBar) findViewById(R.id.SeekBar1);

greenBar = (SeekBar) findViewById(R.id.SeekBar2);

blueBar = (SeekBar) findViewById(R.id.SeekBar3);

redBar.setOnSeekBarChangeListener((OnSeekBarChangeListener) new redClicker());

greenBar.setOnSeekBarChangeListener((OnSeekBarChangeListener) new greenClicker());

blueBar.setOnSeekBarChangeListener((OnSeekBarChangeListener) new blueClicker());

}

class redClicker implements SeekBar.OnSeekBarChangeListener {

@Override

public void onProgressChanged(SeekBar seekBar, int progress,

boolean fromUser) {

try {

msg.setTextColor(Color.rgb(redBar.getProgress(), greenBar.getProgress(), blueBar.getProgress()));

} catch (Exception e) {

e.printStackTrace();

}

}

@Override

public void onStartTrackingTouch(SeekBar seekBar) {

// TODO Auto-generated method stub

}

@Override

public void onStopTrackingTouch(SeekBar seekBar) {

// TODO Auto-generated method stub

}

}

class greenClicker implements SeekBar.OnSeekBarChangeListener {

@Override

public void onProgressChanged(SeekBar seekBar, int progress,

boolean fromUser) {

try {

msg.setTextColor(Color.rgb(redBar.getProgress(), greenBar.getProgress(), blueBar.getProgress()));

} catch (Exception e) {

e.printStackTrace();

}

}

@Override

public void onStartTrackingTouch(SeekBar seekBar) {

// TODO Auto-generated method stub

}

@Override

public void onStopTrackingTouch(SeekBar seekBar) {

// TODO Auto-generated method stub

}

}

class blueClicker implements SeekBar.OnSeekBarChangeListener {

@Override

public void onProgressChanged(SeekBar seekBar, int progress,

boolean fromUser) {

try {

msg.setTextColor(Color.rgb(redBar.getProgress(), greenBar.getProgress(), blueBar.getProgress()));

} catch (Exception e) {

e.printStackTrace();

}

}

@Override

public void onStartTrackingTouch(SeekBar seekBar) {

// TODO Auto-generated method stub

}

@Override

public void onStopTrackingTouch(SeekBar seekBar) {

// TODO Auto-generated method stub

}

}

}