SeekBar進度條顯示以及改變滑塊樣式基礎

    <!-- android:thumb:修改滑塊樣式  -->
    <SeekBar
        android:thumb="@drawable/my_thumb"
        android:id="@+id/seekBar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:max="100"
        android:progress="50" />

    <TextView
        android:id="@+id/tv1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/tv2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
 

package com.example.seekbar;

import android.support.v7.app.ActionBarActivity;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.SeekBar.OnSeekBarChangeListener;

public class MainActivity extends Activity implements OnSeekBarChangeListener
 
{

	private SeekBar seekBar;
	private TextView tv1,tv2;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
	
		seekBar=(SeekBar) findViewById(R.id.seekBar);
		seekBar.setOnSeekBarChangeListener(this);
		
		tv1=(TextView) findViewById(R.id.tv1);
		tv2=(TextView) findViewById(R.id.tv2);
	}
	
	//數值改變
	@Override
	public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
		// TODO Auto-generated method stub
		tv1.setText("正在拖動");
		tv2.setText("當前數值："+progress);
	}
	
	//開始拖動
	@Override
	public void onStartTrackingTouch(SeekBar seekBar) {
		// TODO Auto-generated method stub
		tv1.setText("開始拖動");
	}
	
	//停止拖動
	@Override
	public void onStopTrackingTouch(SeekBar seekBar) {
		// TODO Auto-generated method stub
		tv1.setText("停止拖動");
	}
}
 

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@drawable/select" android:state_pressed="true" android:state_window_focused="true"/>
    <item android:drawable="@drawable/select" android:state_focused="true" android:state_window_focused="true"/>
    <item android:drawable="@drawable/select" android:state_selected="true" android:state_window_focused="true"/>
    <item android:drawable="@drawable/normal"/>

</selector>