效果图：
布局代码：
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.zking.laci.android07.MainActivity" android:orientation="vertical" > <ImageView android:layout_width="300dp" android:layout_height="300dp" android:id="@+id/img_main_img1" android:background="@color/colorAccent" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" > <RadioGroup android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:id="@+id/radio_rbs" > <RadioButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="1号佳丽" android:ems="3" android:onClick="change" android:id="@+id/rb1" /> <RadioButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="2号佳丽" android:ems="3" android:onClick="change" /> <RadioButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="3号佳丽" android:ems="3" android:onClick="change" /> <RadioButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="4号佳丽" android:ems="3" android:onClick="change" /> <RadioButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="5号佳丽" android:ems="3" android:onClick="change" /> <RadioButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="6号佳丽" android:ems="3" android:onClick="change" /> </RadioGroup> </LinearLayout> </LinearLayout>Java代码： package com.zking.laci.android07; import android.content.Intent; import android.support.annotation.IdRes; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.ImageView; import android.widget.RadioButton; import android.widget.RadioGroup; import android.widget.Toast; import java.util.HashMap; import java.util.Map; public class MainActivity extends AppCompatActivity { //设置键值对 private Map<String,Integer> m=new HashMap<>(); private ImageView img; private RadioGroup rbs; private RadioButton r; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //根据ID获得相对应的控件 img = (ImageView) findViewById(R.id.img_main_img1); rbs = (RadioGroup) findViewById(R.id.radio_rbs); r = (RadioButton) findViewById(R.id.rb1); //添加数据 m.put("1号佳丽",R.drawable.s1); m.put("2号佳丽",R.drawable.s2); m.put("3号佳丽",R.drawable.s3); m.put("4号佳丽",R.drawable.s6); m.put("5号佳丽",R.drawable.s7); m.put("6号佳丽",R.drawable.s9); //设置默认值 img.setImageResource(m.get("1号佳丽")); r.setChecked(true); } public void change(View v){ //将传进来的view强转为RadioButton RadioButton rb= (RadioButton) v; String str=rb.getText().toString(); if(str.equals("1号佳丽")){ r.setChecked(true); }else{ r.setChecked(false); } img.setImageResource(m.get(str)); } }
