Android之SeekBar与RatingBar简单实例

<RelativeLayout 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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >
    
    <SeekBar 
        android:id="@+id/seekBar1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        />
    <RatingBar 
        android:id="@+id/ratingbar1"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content"
        android:layout_below="@id/seekBar1"
        android:numStars="4"
        android:stepSize="0.5"
        />
    <Button 
        android:id="@+id/button1"
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:layout_below="@id/ratingbar1"
        android:text="增加RatingBar的星数"/>

</RelativeLayout>

package com.android.xiong.seekbars;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RatingBar;
import android.widget.RatingBar.OnRatingBarChangeListener;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;

public class MainActivity extends Activity {
	
	private SeekBar seekBar1;
	private RatingBar ratingBar1;
	private Button button1;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		seekBar1=(SeekBar)findViewById(R.id.seekBar1);
		seekBar1.setMax(100);
		seekBar1.setSecondaryProgress(20);
		seekBar1.setProgress(10);
		SeekBarChangeListener seek=new SeekBarChangeListener();
		seekBar1.setOnSeekBarChangeListener(seek);
		
		ratingBar1=(RatingBar)findViewById(R.id.ratingbar1);
		//设置RatingBar5颗星
		ratingBar1.setNumStars(4);
		//设置当前的星数
		ratingBar1.setRating(1.0f);
		//设置RatingBar 评分的步长
		ratingBar1.setStepSize(0.5f);
		RatingBarChangeLister rat=new RatingBarChangeLister();
		ratingBar1.setOnRatingBarChangeListener(rat);
		
		button1=(Button)findViewById(R.id.button1);
		BuutonClick bu=new BuutonClick();
		button1.setOnClickListener(bu);
		
		
		
	}

	class SeekBarChangeListener implements  OnSeekBarChangeListener {

		/**
		 * seekBar 当前触发的SeekBar控件
		 * progress 当前的进度
		 * fromUser 是否是用户触发  用户触发为true 否则为false
		 */
		@Override
		public void onProgressChanged(SeekBar seekBar, int progress,
				boolean fromUser) {
			// TODO Auto-generated method stub
			System.out.println("progress:"+progress+"  fromUser:"+fromUser);
			
		}
		//此方法表示 开始拖动时触发的方法
		@Override
		public void onStartTrackingTouch(SeekBar seekBar) {
			// TODO Auto-generated method stub
			System.out.println(seekBar.getProgress());
			
		}
		
		//拖动停止时触发的方法
		@Override
		public void onStopTrackingTouch(SeekBar seekBar) {
			// TODO Auto-generated method stub
			System.out.println(seekBar.getProgress());
		}
		
	}
	
	class RatingBarChangeLister implements OnRatingBarChangeListener{
		/**
		 * rattingBar当前触发的RatingBar控件
		 * rating 当前的星数
		 * fromUser 是否是用户触发
		 */

		@Override
		public void onRatingChanged(RatingBar ratingBar, float rating,
				boolean fromUser) {
			// TODO Auto-generated method stub
			
			System.out.println("rating:"+ rating +" fromUser:"+fromUser);
			
		}
		
	}
	
	class BuutonClick implements OnClickListener{

		@Override
		public void onClick(View arg0) {
			// TODO Auto-generated method stub
			ratingBar1.setRating(ratingBar1.getRating()+0.5f);
			
		}
		
	}
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

}