在SwiftUI的LazyVGrid中显示提示视图

LazyVGrid(columns: [GridItem(.flexible()), GridItem(.flexible()), GridItem(.flexible())], spacing: 10) {
    // 添加视图
}

LazyVGrid(columns: [GridItem(.flexible()), GridItem(.flexible()), GridItem(.flexible())], spacing: 10) {
    Text("视图1")
    Text("视图2")
    Text("视图3")
    // 添加更多视图
}

LazyVGrid(columns: [GridItem(.flexible()), GridItem(.flexible()), GridItem(.flexible())], spacing: 10) {
    if data.isEmpty {
        Text("没有数据")
    } else {
        // 添加其他视图
    }
}

LazyVGrid(columns: [GridItem(.flexible()), GridItem(.flexible()), GridItem(.flexible())], spacing: 10) {
    if data.isEmpty {
        Text("没有数据")
            .foregroundColor(.gray)
            .font(.headline)
    } else {
        // 添加其他视图
    }
}