MakeFriendsApplication
girl
图片复制到 media
文件夹下
ability_main
<?xml version="1.0" encoding="utf-8"?>
<DirectionalLayout
xmlns:ohos="http://schemas.huawei.com/res/ohos"
ohos:height="match_parent"
ohos:width="match_parent"
ohos:alignment="center"
ohos:orientation="vertical">
<Image
ohos:id="$+id:img"
ohos:height="match_content"
ohos:width="match_content"
ohos:image_src="$media:girl1"/>
<Text
ohos:id="$+id:name"
ohos:height="50vp"
ohos:width="150vp"
ohos:text="姓名:王美花"
ohos:text_size="20fp"/>
<Text
ohos:id="$+id:age"
ohos:height="50vp"
ohos:width="150vp"
ohos:text="年龄:29"
ohos:text_size="20fp"/>
<Text
ohos:id="$+id:address"
ohos:height="50vp"
ohos:width="150vp"
ohos:text="地址:南京"
ohos:text_size="20fp"/>
<Button
ohos:id="$+id:next"
ohos:height="50vp"
ohos:width="150vp"
ohos:background_element="#92D050"
ohos:text="下一个"
ohos:text_size="20fp"
ohos:text_color="#FFFFFF"/>
<Button
ohos:id="$+id:get"
ohos:height="50vp"
ohos:width="150vp"
ohos:background_element="#92D050"
ohos:text="获取联系方式"
ohos:text_size="20fp"
ohos:text_color="#FFFFFF"
ohos:top_margin="10vp"/>
</DirectionalLayout>
domain
中新建类名为:GirlFriend
,在类中的属性有哪些?girl
图片是int
类型的
GirlFriend
类中图片类型使用int
类型
package com.xdr630.makefriendsapplication.domain;
public class GirlFriend {
//照片
private int photoID;
//姓名
private String name;
//年龄
private int age;
//地址
private String address;
//空参 + 全参:alt + insert
public GirlFriend() {
}
public GirlFriend(int photoID, String name, int age, String address) {
this.photoID = photoID;
this.name = name;
this.age = age;
this.address = address;
}
public int getPhotoID() {
return photoID;
}
public void setPhotoID(int photoID) {
this.photoID = photoID;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
}
ArrayList
,泛型就可以直接写创建好的GirlFriend
类
new GirlFriend
)并添加到 list
当中Ctrl + P
就可以查看参数了
9
个对象
next
”和“get
”按钮next
按钮被点击后,就会执行本类中的onClick
方法
get
按钮同上也要添加单击事件
onClick
方法中判断点击是 next
按钮 或 get
按钮onClick
方法中要用到按钮的对象,所以把按钮的对象提升为 成员变量 才能在onClick
方法中被访问的到,用到哪个就提哪个,这些组件都用的到,所以都提为成员变量。onClick
方法当中,要从集合中获取girl
信息,所以集合也要提为成员变量
Random
对象也放在成员位置,表示在程序启动之后就创建了一个,如果放在onClick
方法中,当点击一次就创建一次,内存冗余。
MainAbilitySlice
package com.xdr630.makefriendsapplication.slice;
import com.xdr630.makefriendsapplication.ResourceTable;
import com.xdr630.makefriendsapplication.domain.GirlFriend;
import ohos.aafwk.ability.AbilitySlice;
import ohos.aafwk.content.Intent;
import ohos.agp.components.Button;
import ohos.agp.components.Component;
import ohos.agp.components.Image;
import ohos.agp.components.Text;
import java.util.ArrayList;
import java.util.Random;
public class MainAbilitySlice extends AbilitySlice implements Component.ClickedListener {
Image img;
Text name;
Text age;
Text address;
Button next;
Button get;
ArrayList<GirlFriend> list = new ArrayList<>();
@Override
public void onStart(Intent intent) {
super.onStart(intent);
super.setUIContent(ResourceTable.Layout_ability_main);
//1.找到组件对象
img = (Image) findComponentById(ResourceTable.Id_img);
name = (Text) findComponentById(ResourceTable.Id_name);
age = (Text) findComponentById(ResourceTable.Id_age);
address = (Text) findComponentById(ResourceTable.Id_address);
next = (Button) findComponentById(ResourceTable.Id_next);
get = (Button) findComponentById(ResourceTable.Id_get);
//2.创建一个集合装9个相亲的对象
//添加9个对象
//在以后学习了和服务器交互之后,这些数据都是从服务器获取的
list.add(new GirlFriend(ResourceTable.Media_girl1,"王美花1",29,"南京"));
list.add(new GirlFriend(ResourceTable.Media_girl2,"王美花2",30,"上海"));
list.add(new GirlFriend(ResourceTable.Media_girl3,"王美花3",31,"武汉"));
list.add(new GirlFriend(ResourceTable.Media_girl4,"王美花4",28,"长沙"));
list.add(new GirlFriend(ResourceTable.Media_girl5,"王美花5",25,"南昌"));
list.add(new GirlFriend(ResourceTable.Media_girl6,"王美花6",26,"杭州"));
list.add(new GirlFriend(ResourceTable.Media_girl7,"王美花7",23,"深圳"));
list.add(new GirlFriend(ResourceTable.Media_girl8,"王美花8",22,"北京"));
list.add(new GirlFriend(ResourceTable.Media_girl9,"王美花9",24,"广州"));
//3.给按钮添加点击事件
next.setClickedListener(this);
get.setClickedListener(this);
}
@Override
public void onActive() {
super.onActive();
}
@Override
public void onForeground(Intent intent) {
super.onForeground(intent);
}
Random r = new Random();
@Override
public void onClick(Component component) {
if (component == next){
//点击的是下一个 --- 换一个girl的信息
//从集合中获取一个随机的girl的信息
//获取一个随机索引
int randomIndex = r.nextInt(list.size());
//通过随机索引获取随机girl信息
GirlFriend girlFriend = list.get(randomIndex);
//把随机出来的信息设置到界面当中
img.setImageAndDecodeBounds(girlFriend.getPhotoID());
name.setText("姓名:" + girlFriend.getName());
age.setText("年龄:" + girlFriend.getAge());
address.setText("地址:" + girlFriend.getAddress());
}else if (component == get){
//获取联系方式
//扩展:可以跳转到界面让用户充值界面,充值后才能看到girl信息
}
}
}
原创声明:本文系作者授权腾讯云开发者社区发表,未经许可,不得转载。
如有侵权,请联系 cloudcommunity@tencent.com 删除。
原创声明:本文系作者授权腾讯云开发者社区发表,未经许可,不得转载。
如有侵权,请联系 cloudcommunity@tencent.com 删除。