Android_SeekBar

xml:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.android_seekbar.MainActivity"
    android:orientation="vertical" >
    <SeekBar 
        android:id="@+id/SeekBar01"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
           android:max="100"
           android:thumb="@drawable/mythumb"
        android:progress="50"/>
    <TextView
        android:id="@+id/text01"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
     />
     <TextView
        android:id="@+id/text02"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
     />
</LinearLayout>

main.java

package com.example.android_seekbar;

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

/**
 * SeekBar:滚动条
 *         与ProgressBar的区别在与：拖动条允许用户拖动滑块来改变进度条的大小
 *
 *SeekBar 的主要属性个方法
 *        SetMax—设置SeekBar的最大数值
 *        setProgress—设置SeekBar当前的数值
 *        setSecondaryProgress—设置SeekBar的第二数值，即当前拖动条推荐的数值
 *
 *SeekBar的事件
 *        实现接口：SeekBar.OnSeekBarChangeListerer
 *        数值改变：onProgressChanged
 *        开始拖动：onStartTrackingTouch
 *        停止拖动：onStopTrackingTouch
 * 
 * 自定义进度条：
 * android:progressDrawable="@drawable/seekBar.img"(改变进度条的样式)
 * android:thumb="@drawable/thumb"(改变滑块的样式)
 *
 * @author Administrator
 */
public class MainActivity extends Activity implements OnSeekBarChangeListener{

    private SeekBar seekBar;
    private TextView tv1;
    private TextView tv2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        seekBar = (SeekBar) findViewById(R.id.SeekBar01);
        tv1 = (TextView) findViewById(R.id.text01);
        tv2 = (TextView) findViewById(R.id.text02);
        
        seekBar.setOnSeekBarChangeListener(this);
    }

    @Override
    public void onProgressChanged(SeekBar seekBar, int progress,
            boolean fromUser) {
        // TODO Auto-generated method stub
        tv1.setText("正在拖动");
        tv2.setText("进度："+progress);
    }

    @Override
    public void onStartTrackingTouch(SeekBar seekBar) {
        // TODO Auto-generated method stub
        tv1.setText("开始拖动");
    }

    @Override
    public void onStopTrackingTouch(SeekBar seekBar) {
        // TODO Auto-generated method stub
        tv1.setText("结束拖动");
        
    }

}