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Fixed Issue #1201: iOS: A page that is disappearing with animation after navigation to another page should not be measured and laid out.

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This commit is contained in:
Rossen Hristov
2015-12-04 11:21:53 +02:00
parent 6d43f4dcbc
commit a5afdb1411
2 changed files with 29 additions and 4 deletions
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9
ui/frame/frame.ios.ts
View File

@ -206,6 +206,10 @@ export class Frame extends frameCommon.Frame {
}
public measurePage(page: pages.Page): { measuredWidth: number; measuredHeight: number } {
if (page && (<any>page)._viewWillDisappear) {
//https://github.com/NativeScript/NativeScript/issues/1201
return { measuredWidth: undefined, measuredHeight: undefined };
}
// If background does not span under statusbar - reduce available height.
let heightSpec: number = this._heightMeasureSpec;
@ -229,6 +233,11 @@ export class Frame extends frameCommon.Frame {
}
public layoutPage(page: pages.Page): void {
if (page && (<any>page)._viewWillDisappear) {
//https://github.com/NativeScript/NativeScript/issues/1201
return;
}
// If background does not span under statusbar - reduce available height and adjust top offset.
let statusBarHeight = (page && !page.backgroundSpanUnderStatusBar && !this.parent) ? uiUtils.ios.getStatusBarHeight() : 0;

22
ui/page/page.ios.ts
View File

@ -96,6 +96,9 @@ class UIViewControllerImpl extends UIViewController {
trace.write(owner + " viewWillAppear", trace.categories.Navigation);
owner._enableLoadedEvents = true;
//https://github.com/NativeScript/NativeScript/issues/1201
owner._viewWillDisappear = false;
// In iOS we intentionally delay the raising of the 'loaded' event so both platforms behave identically.
// The loaded event must be raised AFTER the page is part of the windows hierarchy and
// frame.topmost().currentPage is set to the page instance.
@ -108,6 +111,18 @@ class UIViewControllerImpl extends UIViewController {
owner._enableLoadedEvents = false;
}
public viewWillDisappear() {
let owner = this._owner.get();
if (!owner) {
return;
}
trace.write(owner + " viewWillDisappear", trace.categories.Navigation);
//https://github.com/NativeScript/NativeScript/issues/1201
owner._viewWillDisappear = true;
}
public viewDidDisappear() {
let owner = this._owner.get();
if (!owner) {
@ -128,9 +143,10 @@ class UIViewControllerImpl extends UIViewController {
export class Page extends pageCommon.Page {
private _ios: UIViewController;
public _enableLoadedEvents: boolean;
public _isModal: boolean = false;
public _UIModalPresentationFormSheet: boolean = false;
public _delayLoadedEvent;
public _isModal: boolean;
public _UIModalPresentationFormSheet: boolean;
public _delayLoadedEvent: boolean;
public _viewWillDisappear: boolean;
constructor(options?: definition.Options) {
super(options);