HarmonyOS 点击事件的实现

柔光的暖阳◎ 2022-10-09 04:52 12阅读 0赞

### HarmonyOS 点击事件使用的方法 ###

HarmonyOS 点击事件 使用 setClickedListener

编译器提醒换是很不错的

![20210623222145883.png][]

### **点击事件具体的实现** ###

xml 写一个button 如下

<?xml version="1.0" encoding="utf-8"?>
    <DependentLayout
        xmlns:ohos="http://schemas.huawei.com/res/ohos"
        ohos:height="match_parent"
        ohos:width="match_parent"
        ohos:background_element="#3387CEFA">
    
        <Button
            ohos:id="$+id:button1"
            ohos:height="50vp"
            ohos:width="100vp"
            ohos:center_in_parent="true"
            ohos:background_element="#00FFFF"
            ohos:text="Java"
            ohos:text_alignment="center"
            ohos:text_size="20fp"/>
    
    </DependentLayout>

java 代码

package com.example.myapplication.slice;
    
    import com.example.myapplication.ResourceTable;
    import ohos.aafwk.ability.AbilitySlice;
    import ohos.aafwk.ability.OnClickListener;
    import ohos.aafwk.content.Intent;
    import ohos.agp.components.AttrHelper;
    import ohos.agp.components.Button;
    import ohos.agp.components.Component;
    import ohos.agp.window.dialog.ToastDialog;
    
    import java.util.logging.Logger;
    
    public class MainAbilitySlice extends AbilitySlice {
        private Button button1;
    
        @Override
        public void onStart(Intent intent) {
            super.onStart(intent);
            super.setUIContent(ResourceTable.Layout_ability_main);
            button1 = (Button) findComponentById(ResourceTable.Id_button1);
    
            button1.setClickedListener(new Component.ClickedListener() {
                @Override
                public void onClick(Component component) {
                    new ToastDialog(getContext()).setText("点击了").show();
                }
            });
        }
    
    
        @Override
        public void onActive() {
            super.onActive();
        }
    
        @Override
        public void onForeground(Intent intent) {
            super.onForeground(intent);
        }
    }

点击会有个Toast

![20210623222333249.png][]

[20210623222145883.png]: /images/20221005/9a345864c39e48b1918cc855878ab7f9.png
[20210623222333249.png]: /images/20221005/6417222674b54dc3af20331405c440e2.png