打分功能实例
使用SeekBar与RatingBar共同实现：
<RelativeLayout xmlns:android="http://www.easck.com/apk/res/android" xmlns:tools="http://www.easck.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;
}
}
