RatingBar是我们在系统显示分数的好组件，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，系统默认的样子是这样的：
下图是个不错的选择哦：
想要实现如上效果，首先我们在styles.xml写入一个样式：
Xml代码
< ?xml version="1.0" encoding="utf-8"?>
< resources>
< style name="foodRatingBar" parent="@android:style/Widget.RatingBar">
< item name="android:progressDrawable">@drawable/food_ratingbar_full
< item name="android:minHeight">48dip
< item name="android:maxHeight">48dip
< /style>
< /resources>
< ?xml version="1.0" encoding="utf-8"?>
< resources>
< style name="foodRatingBar" parent="@android:style/Widget.RatingBar">
< item name="android:progressDrawable">@drawable/food_ratingbar_full
< item name="android:minHeight">48dip
< item name="android:maxHeight">48dip
< /style>
< /resources>
然后在Drawable文件夹下建food_rating_bar_full.xml文件，内容如下：
Xml代码
< ?xml version="1.0" encoding="utf-8"?>
< layer-list xmlns:android="http://schemas.android.com/apk/res/android">
< item android:id="@+android:id/background"
android:drawable="@drawable/food_ratingbar_full_empty" />
< item android:id="@+android:id/secondaryProgress"
android:drawable="@drawable/food_ratingbar_full_empty" />
< item android:id="@+android:id/progress"
android:drawable="@drawable/food_ratingbar_full_filled" />
< /layer-list>
< ?xml version="1.0" encoding="utf-8"?>
< layer-list xmlns:android="http://schemas.android.com/apk/res/android">
< item android:id="@+android:id/background"
android:drawable="@drawable/food_ratingbar_full_empty" />
< item android:id="@+android:id/secondaryProgress"
android:drawable="@drawable/food_ratingbar_full_empty" />
< item android:id="@+android:id/progress"
android:drawable="@drawable/food_ratingbar_full_filled" />
< /layer-list>
food_ratingbar_full_empty是代表没有选中图片效果，food_ratingbar_full_filled选中图片效果。
最后将style放入RatingBar中，即可实现你的图片效果：
Xml代码
< RatingBar android:id="@+id/my_rating_bar"
...
style="@style/foodRatingBar" />
< RatingBar android:id="@+id/my_rating_bar"
...
style="@style/foodRatingBar" />
