SeekBar

A SeekBar is an extension of ProgressBar that adds a draggable thumb. The user can touch the thumb and drag left or right to set the current progress level or use the arrow keys. Placing focusable widgets to the left or right of a SeekBar is discouraged.

Clients of the SeekBar can attach a SeekBar.OnSeekBarChangeListener to be notified of the user's actions.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
<SeekBar 
    android:id="@+id/seekbar"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:max="255"
    />
<TextView  
    android:id="@+id/seekbarvalue"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    />
</LinearLayout>

package com.AndroidSeekBar;

import android.app.Activity;
import android.os.Bundle;
import android.widget.SeekBar;
import android.widget.TextView;

public class AndroidSeekBar extends Activity {
 
 TextView seekBarValue;
 
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        SeekBar seekBar = (SeekBar)findViewById(R.id.seekbar);
        seekBarValue = (TextView)findViewById(R.id.seekbarvalue);
        seekBar.setOnSeekBarChangeListener(seekBarChangeListener);
        
    }
    
    SeekBar.OnSeekBarChangeListener seekBarChangeListener
    = new SeekBar.OnSeekBarChangeListener(){

  @Override
  public void onProgressChanged(SeekBar arg0, int arg1, boolean arg2) {
   // TODO Auto-generated method stub
   seekBarValue.setText(String.valueOf(arg1));
  }

  @Override
  public void onStartTrackingTouch(SeekBar arg0) {
   // TODO Auto-generated method stub
   
  }

  @Override
  public void onStopTrackingTouch(SeekBar arg0) {
   // TODO Auto-generated method stub
   
  }};
}

Tweet