1. 打开第一个页面的“MainAbilitySlice.java”文件，重写onStart()方法添加按钮的响应逻辑，实现点击按钮跳转到下一页，示例代码如下：

   package com.example.myapplication.slice;       import com.example.myapplication.ResourceTable;   import ohos.aafwk.ability.AbilitySlice;   import ohos.aafwk.content.Intent;   import ohos.aafwk.content.Operation;   import ohos.agp.components.*;       public class MainAbilitySlice extends AbilitySlice {           @Override       public void onStart(Intent intent) {           super.onStart(intent);           super.setUIContent(ResourceTable.Layout_main_layout);           Button button = (Button) findComponentById(ResourceTable.Id_button);               if (button != null) {               // 为按钮设置点击回调               button.setClickedListener(new Component.ClickedListener() {                   @Override                   public void onClick(Component component) {                   Intent secondIntent = new Intent();                   // 指定待启动FA的bundleName和abilityName                   Operation operation = new Intent.OperationBuilder()                           .withDeviceId("")                           .withBundleName("com.example.myapplication")                           .withAbilityName("com.example.myapplication.SecondAbility")                           .build();                   secondIntent.setOperation(operation);                   startAbility(secondIntent); // 通过AbilitySlice的startAbility接口实现启动另一个页面                   }               });           }       }           @Override       public void onActive() {           super.onActive();       }           @Override       public void onForeground(Intent intent) {           super.onForeground(intent);       }   }

1. 再次运行项目，效果如图所示：