HarmonyOS实战—多按钮被点击
1. 多按钮被点击[*]新建项目:ListenerApplication5
[*]实现代码:
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">
<text ohos:id="$+id:text1" ohos:height="match_content" ohos:width="match_content" ohos:text="Text" ohos:text_size="100">
</text>
<button ohos:id="$+id:login" ohos:height="match_content" ohos:width="match_content" ohos:text="登录" ohos:text_size="100" ohos:background_element="cyan">
</button>
<button ohos:id="$+id:register" ohos:height="match_content" ohos:width="match_content" ohos:text="注册" ohos:text_size="100" ohos:background_element="red">
</button>
</directionallayout>
MainAbilitySlice
package com.xdr630.listenerapplication5.slice;
import com.xdr630.listenerapplication5.ResourceTable;
import ohos.aafwk.ability.AbilitySlice;
import ohos.aafwk.content.Intent;
import ohos.agp.components.Button;
import ohos.agp.components.Component;
import ohos.agp.components.Text;
public class MainAbilitySlice extends AbilitySlice implements Component.ClickedListener{
Text text1;
Button login;
Button register;
@Override
public void onStart(Intent intent) {
super.onStart(intent);
super.setUIContent(ResourceTable.Layout_ability_main);
//1.找到文本、按钮组件
text1= (Text) findComponentById(ResourceTable.Id_text1);
login = (Button) findComponentById(ResourceTable.Id_login);
register = (Button) findComponentById(ResourceTable.Id_register);
//2.给按钮绑定事件
//要对哪个组件做什么操作?
//要对登录按钮,注册按钮做点击操作
login.setClickedListener(this);
register.setClickedListener(this);
}
@Override
public void onActive() {
super.onActive();
}
@Override
public void onForeground(Intent intent) {
super.onForeground(intent);
}
@Override
public void onClick(Component component) {
//先做一个判断
//判断当前点击的按钮时登录按钮还是注册按钮
//component:表示当前点击的组件
if (component == login){
//表示点击的是登录按钮
text1.setText("点击了登录按钮");
}else if (component == register){
//表示点击的是注册按钮
text1.setText("点击了注册按钮");
}
}
}
[*]运行:
[*]点击登录按钮:
[*]点击注册按钮:
2. 小节
[*]以后要写到登录逻辑或注册逻辑,整体的架构就是跟这个案例类似的,唯一的不同就是把setText内容变成真正的登录逻辑或注册逻辑。
文档来源:开源中国社区https://my.oschina.net/xdr630/blog/5156186
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