本文整理匯總了TypeScript中tns-core-modules/data/virtual-array.VirtualArray.load方法的典型用法代碼示例。如果您正苦於以下問題：TypeScript VirtualArray.load方法的具體用法？TypeScript VirtualArray.load怎麽用？TypeScript VirtualArray.load使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類tns-core-modules/data/virtual-array.VirtualArray的用法示例。
在下文中一共展示了VirtualArray.load方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的TypeScript代碼示例。
示例1: function
export var test_VirtualArray_loadShouldRaiseChangeEventWithCorrectArgs = function () {
// >> virtual-array-change
var array = new virtualArrayModule.VirtualArray<number>(100);
array.loadSize = 15;
// >> (hide)
var result: virtualArrayModule.ChangedData<number>;
var index = 0;
// << (hide)
array.on(virtualArrayModule.VirtualArray.changeEvent, (args: virtualArrayModule.ChangedData<number>) => {
// Argument (args) is ChangedData<T>.
// args.eventName is "change".
// args.action is "update".
// args.removed.length and result.addedCount are equal to number of loaded items with load() method.
// >> (hide)
result = args;
// << (hide)
});
var itemsToLoad = [0, 1, 2];
array.load(index, itemsToLoad);
// << virtual-array-change
TKUnit.assert(result && result.eventName === "change" && result.action === virtualArrayModule.ChangeType.Update &&
result.removed.length === itemsToLoad.length && result.index === index && result.addedCount === itemsToLoad.length,
"VirtualArray<T> load() should raise 'change' event with correct args!");
};示例2:
array.on(virtualArrayModule.VirtualArray.itemsLoadingEvent, (args: virtualArrayModule.ItemsLoading) => {
// Argument (args) is ItemsLoading.
// args.index is start index of the page where the requested index is located.
// args.count number of requested items.
//
// Note: Virtual array will divide total number of items to pages using "loadSize" property value. When you request an
// item at specific index the array will raise "itemsLoading" event with "ItemsLoading" argument index set to the first index of the requested page
// and count set to number of items in this page.
//
// Important: If you have already loaded items in the requested page the array will raise multiple times "itemsLoading" event to request
// all ranges of still not loaded items in this page.
var itemsToLoad = new Array<number>();
for (var i = 0; i < args.count; i++) {
itemsToLoad.push(i + args.index);
}
array.load(args.index, itemsToLoad);
});