自定义进度条

<main.xml>

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<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="40" />

<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/t1"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/t2"
/>

<MainActivity.java>
package com.exampl.seekbar;

import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;
import android.os.Build;

public class MainActivity extends ActionBarActivity implements OnSeekBarChangeListener{
private SeekBar seekbar;
private TextView t1;
private TextView t2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
t1=(TextView) findViewById(R.id.t1);
t2=(TextView) findViewById(R.id.t2);
seekbar=(SeekBar) findViewById(R.id.seekbar);
seekbar.setOnSeekBarChangeListener(this);
}
@Override
/数值改变时调用/
public void onProgressChanged(SeekBar arg0, int progress, boolean arg2) {
// TODO Auto-generated method stub
t1.setText("正在拖动");
t2.setText("当前数值"+progress);
}
@Override
/开始拖动时调用/
public void onStartTrackingTouch(SeekBar arg0) {
// TODO Auto-generated method stub
t1.setText("开始拖动");
}
@Override
/数值停止时调用/
public void onStopTrackingTouch(SeekBar arg0) {
// TODO Auto-generated method stub
t1.setText("停止拖动");
}
}

<my_thumb.xml>

<?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>