Android基础控件RatingBar星级评分条的使用

1、简介

  RatingBar继承ProgressBar,除了ProgressBar的属性外还有特有属性:

android:isIndicator:是否用作指示,用户无法更改,默认false
android:numStars:显示多少个星星,必须为整数
android:rating:默认评分值,必须为浮点数
android:stepSize: 评分每次增加的值,必须为浮点数

OnRatingBarChangeListener //事件处理

 

2、简单使用

  1)星条的drawable资源layer-list图层:

<?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/rating_off"/>
    <item android:id="@android:id/progress"
        android:drawable="@drawable/rating_on"/>
</layer-list>

  2)在values文件夹下styles.xml文件中添加style:

    <style name="roomRatingBar_1" parent="@android:style/Widget.RatingBar">
        <item name="android:progressDrawable">@drawable/ratingbar_layer</item>
        <item name="android:minHeight">24dip</item>
        <item name="android:maxHeight">24dip</item>
    </style>

  3)星条的xml布局文件:

<LinearLayout 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:gravity="center"
    android:orientation="vertical"
    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=".LoginActivity">

        <RatingBar
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/ratingbar"
            style="@style/roomRatingBar_1"
            android:isIndicator="false"
            android:numStars="6"
            android:rating="1.5"
            android:stepSize="0.25"/>

</LinearLayout>

  4)Java文件事件处理:

public class LoginActivity extends AppCompatActivity  {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        // Set up the login form.

        RatingBar ratingBar = (RatingBar)findViewById(R.id.ratingbar);
        ratingBar.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
            @Override
            public void onRatingChanged(RatingBar ratingBar, float v, boolean b) {
                Toast.makeText(LoginActivity.this,"rating"+String.valueOf(v),Toast.LENGTH_SHORT).show();
            }
        });
    }

}

 

  

 

posted @ 2017-12-25 13:54  ForeverGuard  阅读(11392)  评论(0编辑  收藏  举报