控件：拖动条 SeekBar（图片浏览）

           

<?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">
    <ImageView 
        android:id="@+id/pic"
        android:src="@drawable/pic_0"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"/> 
    <SeekBar 
        android:id="@+id/seekbar" 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />
</LinearLayout>

import android.app.Activity;
import android.os.Bundle;
import android.text.method.ScrollingMovementMethod;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.TextView;

public class MySeekBarDemo extends Activity {
    private SeekBar seekbar = null;
    private ImageView pic = null;
    private int picData[] = new int[] { 
            R.drawable.pic_0, R.drawable.pic_1,
            R.drawable.pic_2, R.drawable.pic_3, R.drawable.pic_4,
            R.drawable.pic_5, R.drawable.pic_6, R.drawable.pic_7,
            R.drawable.pic_8, R.drawable.pic_9 };

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        super.setContentView(R.layout.main);
        // 取得组件
        this.seekbar = (SeekBar) super.findViewById(R.id.seekbar); 
        // 取得组件
        this.pic = (ImageView) super.findViewById(R.id.pic);  
        // 0 ~ 9的范围
        this.seekbar.setMax(9); 
        this.seekbar.setOnSeekBarChangeListener(new OnSeekBarChangeListenerImpl());
    }

    private class OnSeekBarChangeListenerImpl implements SeekBar.OnSeekBarChangeListener {
        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
        }
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) {
            // 设置显示图片
            MySeekBarDemo.this.pic
                    .setImageResource(MySeekBarDemo.this.picData[seekBar
                            .getProgress()]);
        }
        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
        }

    }
}