大约有 600 项符合查询结果（耗时：0.0044秒） [XML]
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...dians[a] that the two fingers rotate. When the angle is smaller than 0, it means that fingers rotate clockwise; when the angle is bigger than 0, it means that the fingers rotate counterclockwise. It changes the heading of ArrowSprite corresponding to the angle it returns. At the end of Rotate, it up...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...dians[a] that the two fingers rotate. When the angle is smaller than 0, it means that fingers rotate clockwise; when the angle is bigger than 0, it means that the fingers rotate counterclockwise. It changes the heading of ArrowSprite corresponding to the angle it returns. At the end of Rotate, it up...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...dians[a] that the two fingers rotate. When the angle is smaller than 0, it means that fingers rotate clockwise; when the angle is bigger than 0, it means that the fingers rotate counterclockwise. It changes the heading of ArrowSprite corresponding to the angle it returns. At the end of Rotate, it up...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...dians[a] that the two fingers rotate. When the angle is smaller than 0, it means that fingers rotate clockwise; when the angle is bigger than 0, it means that the fingers rotate counterclockwise. It changes the heading of ArrowSprite corresponding to the angle it returns. At the end of Rotate, it up...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...dians[a] that the two fingers rotate. When the angle is smaller than 0, it means that fingers rotate clockwise; when the angle is bigger than 0, it means that the fingers rotate counterclockwise. It changes the heading of ArrowSprite corresponding to the angle it returns. At the end of Rotate, it up...
App Inventor 2 SQLite数据库教程 - 本地数据存储与查询 · App Inventor 2 中文网
...建用户表
var 建表SQL = join("CREATE TABLE IF NOT EXISTS users (", "id INTEGER PRIMARY KEY AUTOINCREMENT, ", "name TEXT NOT NULL, ", "phone TEXT, ", "email TEXT, ", "created_at DATETIME DEFAULT CURRENT_TIMESTAMP)")
SQLite1.Execute(建表SQL)
}
插入数据
when 按...
数据结构与本地数据库 02：字典描述卡片，ID 表示身份 · App Inventor 2 中文网
... 数据结构与本地数据库 02：字典描述卡片，ID 表示身份 课程首页 · 全部知识课程 · 返回专题主页
这课解决什么
先预测，再运行
开始实战
新增或调整的组件
逐步搭...
App Inventor 2 使用MongoDB作为后端数据库 · App Inventor 2 中文网
...document
yes
jsonArray
数据
[{“id”:1,“x”:25,“y”:34},{“id”:2,“x”:52,“y”:37}]
查询数据
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类型
用途
举例
act...
蓝牙电源巡检：综合应用案例 · App Inventor 2 中文网
...
HTML 布局预览；原生导航、图表和系统窗口以 Android 实际显示为准。底部四个入口分别是总览、档案、操作、设置。
完整操作流程
先在系统配对 → 选择 SPP 设备 → 查询节点 → 分片拼帧与 ID 校验 → ...
定时浇灌控制台：综合应用案例 · App Inventor 2 中文网
...
HTML 布局预览；原生导航、图表和系统窗口以 Android 实际显示为准。底部四个入口分别是总览、档案、操作、设置。
完整操作流程
配置设备与 Broker → 连接并订阅确认 → 发送限时指令 → 匹配请求 ID ...