步步为营_Android开发课[27]_用户界面之RatingBar(评分栏)

Focus on technology, enjoy life！—— QQ：804212028
浏览链接：http://blog.youkuaiyun.com/y18334702058/article/details/44624305

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• 主题：用户界面之RatingBar(评分栏)
  -这个很简单，平时用的也不多，一般用的上就是给电影或者书籍评分；

RatingBar评分栏(实例)
activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:id="@+id/mainlayout" >

     <RatingBar 
        android:id="@+id/ratingbar1"
        style="android:attr/ratingBarStyle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />
</LinearLayout>

MainActivity.java:

import android.app.Activity;
import android.os.Bundle;
import android.widget.RatingBar;
import android.widget.RatingBar.OnRatingBarChangeListener;
import android.widget.Toast;

public class MainActivity extends Activity {

    RatingBar ratingbar1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ratingbar1 = (RatingBar)findViewById(R.id.ratingbar1);

        ratingbar1.setOnRatingBarChangeListener(new listener());

    }     

    class listener implements OnRatingBarChangeListener{

        @Override
        public void onRatingChanged(RatingBar RatingBar , float rating, boolean fromUser) {
            // TODO Auto-generated method stub
            switch(RatingBar.getId()){
            case R.id.ratingbar1:
                ratingbar1.setRating(rating);
                Toast.makeText(MainActivity.this,"rating:" + String.valueOf(rating),Toast.LENGTH_LONG).show();
                break;
            }
        }
    }
}

运行结果：

Focus on technology, enjoy life！—— QQ：804212028
浏览链接：http://blog.youkuaiyun.com/y18334702058/article/details/44624305