Android 控件seekbar进度条、ratingbar星星平分条-优快云博客

Android 控件seekbar、ratingbar

1、Seekbar就是一个进度条；可拖动可改变；

拖动后：

原代码如下：

布局文件：

<?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"
    >
<SeekBar
    android:id="@+id/seekbarld"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    />
</LinearLayout>

JAVA代码：

package lili.seekbar;
 
import android.app.Activity;
import android.os.Bundle;
import android.widget.SeekBar;
importandroid.widget.SeekBar.OnSeekBarChangeListener;
 
public class SeekBarActivity extendsActivity {
       /**Called when the activity is first created. */
       privateSeekBar seekBar = null;
      
       @Override
       publicvoid onCreate(Bundle savedInstanceState) {
              super.onCreate(savedInstanceState);
              setContentView(R.layout.main);
              //绑定控件
              seekBar= (SeekBar) findViewById(R.id.seekbarld);
              //设置进度条条的最大值
              seekBar.setMax(100);
              //添加监听器
              seekBar.setOnSeekBarChangeListener(newSeekBarListener());
             
       }
       //一个监听器，该监听器负责监听进度条状态 的改变
       privateclass SeekBarListener implements OnSeekBarChangeListener {
              //当进度条的进度发生 变化 时，会调用 该 方法
              publicvoid onProgressChanged(SeekBar seekBar, int progress,
                            booleanfromUser) {
                     System.out.println(progress);
              }
              publicvoid onStartTrackingTouch(SeekBar seekBar) {
                     System.out.println("start->"+ seekBar.getProgress());
              }
              publicvoid onStopTrackingTouch(SeekBar seekBar) {
                     System.out.println("stop->"+ seekBar.getProgress());
              }
       }
      
}

2、Ratingbar是平分条；星星表示

点击星星后：

原码：

布局文件：

<?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"
    >
<RatingBar
    android:id="@+id/ratingbarld"
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    android:numStars="5"
    android:stepSize="13.0"
 />
</LinearLayout>

JAVA文件：

package lili.ratingbar;
 
import android.app.Activity;
import android.os.Bundle;
import android.widget.RatingBar;
 
public class RatingBarActivity extends Activity{
    /**Called when the activity is first created. */
    privateRatingBar ratingBar=null;
   @Override
    publicvoid onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
        ratingBar=(RatingBar)findViewById(R.id.ratingbarld);
       ratingBar.setOnRatingBarChangeListener(newRatingBarListener());
    }
   private class RatingBarListener implementsRatingBar.OnRatingBarChangeListener{
 
       @Override
       publicvoid onRatingChanged(RatingBar ratingBar, float rating,
              booleanfromUser) {
           System.out.println("rating-->"+rating);
       }
      
    }
}

但是我们一般想把RatingBar装饰的更好看，想把更好看的图片用来替换系统默认的图片,那么应该怎么改呢？