android之RatingBar控件用法详解

mainactivity.java

package com.example.mars_2500_ratingbar;

import android.support.v7.app.actionbaractivity;
import android.support.v7.app.actionbar;
import android.support.v4.app.fragment;
import android.app.activity;
import android.os.bundle;
import android.util.log;
import android.view.layoutinflater;
import android.view.menu;
import android.view.menuitem;
import android.view.view;
import android.view.view.onclicklistener;
import android.view.viewgroup;
import android.widget.button;
import android.widget.ratingbar;
import android.widget.ratingbar.onratingbarchangelistener;
import android.os.build;

public class mainactivity extends activity
{

  ratingbar ratingbar;
  button button1;
  public static string tag="mainactivity";
  @override
  protected void oncreate(bundle savedinstancestate)
  {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_main);
    ratingbar=(ratingbar)findviewbyid(r.id.ratingbar1);
    ratingbar.setonratingbarchangelistener(new ratingbarchangelistener());
    button1=(button)findviewbyid(r.id.buttn1);
    button1.setonclicklistener(new clicklistener());
    
  }

  class ratingbarchangelistener implements onratingbarchangelistener
  {
    @override
    public void onratingchanged(ratingbar ratingbar, float rating,
        boolean fromuser)
    {
      log.i(tag, "当前分数="+rating);
      system.out.println("当前分数="+rating);
    }
  }
  
  class clicklistener implements onclicklistener
  {
    @override
    public void onclick(view v)
    {  //在当前加0.5分
      ratingbar.setrating(ratingbar.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;
  }

}

activity_main.xml

<?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/ratingbar1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:numstars="5"
    android:stepsize="0.5"
    />
  <button 
    android:id="@+id/buttn1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@id/ratingbar1"
    android:text="评分"
     />
 </linearlayout>

以上就是小编为大家带来的android之ratingbar控件用法详解的全部内容了，希望对大家有所帮助，多多支持~