我正在尝试在我的 NativeScript 应用程序中创建一个具有动态行和列计数的表或数据网格。我有一些产品类别和这些类别中的一些产品。产品对其所属类别有一些规范。以下是图形卡类别产品的示例 JSON:
{
"parts": [
{
"id": 1,
"name": "GTX 1080",
"stockCount": 10,
"specifications": [
{
"id": 1,
"name": "Memory",
"value": "11 GB"
},
{
"id": 2,
"name": "Core Clock",
"value": "1500 MHz"
}
]
},
{
"id": 2,
"name": "RX 580",
"stockCount": 8,
"specifications": [
{
"id": 1,
"name": "Memory",
"value": "8 GB"
},
{
"id": 2,
"name": "Core Clock",
"value": "1366 MHz"
}
]
}
]
}
这是 CPU 类别中的另一个示例:
{
"parts": [
{
"id": 3,
"name": "i5 7600K",
"stockCount": 8,
"specifications": [
{
"id": 3,
"name": "Socket",
"value": "LGA 1151"
},
{
"id": 4,
"name": "Frequency",
"value": "3.8 GHz"
},
{
"id": 5,
"name": "L3 Cache",
"value": "6 MB"
}
]
},
{
"id": 4,
"name": "Ryzen 7 1700",
"stockCount": 15,
"specifications": [
{
"id": 3,
"name": "Socket",
"value": "AM4"
},
{
"id": 4,
"name": "Frequency",
"value": "3.0 GHz"
},
{
"id": 5,
"name": "L3 Cache",
"value": "16MB"
}
]
}
]
}
我想将显卡显示为这样的表格:
Name Stock Memory Core Clock GTX 1080 10 11 GB 1500 MHz RX 580 8 8 GB 1366 MHz
and CPUs like this:
Name Stock Socket Frequency L3 Cache i5 7600K 8 LGA 1151 3.8 GHz 6 MB Ryzen 7 1700 15 AM4 3.0 GHz 16 MB
I have tried RadListView with GridLayout but cannot do this. If specification count for all categories would be constant, I could easily create GridLayout with constant number of columns like this:
<GridLayout columns="*, auto, auto, auto, auto">...</GridLayout>
但是任意数量的规范让我在这里面临挑战。
NativeScript Angular 有什么方法可以实现这一点吗?我使用的是 4.1.0 版本的 NativeScript。
最佳答案
您可以动态生成值,然后将其绑定(bind)到 GridLayout cloumns 属性,如下所示
<GridLayout [columns]="genCols(item)">
&
genCols(item){
if(item.columns){
return item.columns;
}else{
item.columns="*, auto";
item.specifications.forEach((el)=>{
item.columns+=",auto";
})
return item.columns
}
}
如果用户可以为每个项目添加规范并且规范计数相同,那么更简单的方法是使用单个变量并在 ngOnInit 上设置其值并在添加的规范上更新它,如
columns=genCol(items[0])
然后是 <GridLayout [columns]="columns">
关于nativescript - 如何在NativeScript中创建具有动态行数和列数的表?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/51005364/