使用键盘本机脚本 (IOS) 移动 UI 元素

Question

在我的原生脚本应用程序上 - 我在屏幕底部有一个按钮。屏幕上有一个文本区域。当用户点击文本区域时，将显示一个虚拟键盘。此时，我希望底部的按钮向上移动并出现在虚拟键盘的顶部。关于如何在安卓和iOS中实现这一目标的任何建议？

法典

<GridLayout>
<ActionBar title="" backgroundColor="#f82462" top="0" left="0">
    <NavigationButton (tap)="goBack()"></NavigationButton>
</ActionBar>
<GridLayout rows="*, auto">
    <GridLayout row ='0' rows="auto *" columns="">
        <GridLayout row="0" rows="" columns="">
            <Button text="Top Button" (tap)="goNext()"></Button>                
        </GridLayout>
        <GridLayout row="1" backgroundColor="#f82462">
            <TextView [(ngModel)]="xyz" class="input" hint="Write your question as a complete sentence.Click on camera to add images if required." returnkeyType="done" id="questionText"></TextView>
        </GridLayout>
</GridLayout>
<StackLayout row='1'>
    <Button text="Next" (tap)="goNext()"></Button>
</StackLayout>
</GridLayout>

Answer 1

我现在

无法对此进行测试，但是您是否尝试过将所有内容包装在主 GridLayout 中<ScrollView> ... </ScrollView>

Answer 2

我的即时聊天应用程序也遇到了这个问题，这是解决方案： https://gist.github.com/elvticc/0c789d08d57b1f4d9273f7d93a7083ec

// Also use IQKeyboardManager to customize the iOS keyboard
// See https://github.com/tjvantoll/nativescript-IQKeyboardManager
// let iqKeyboard: IQKeyboardManager = IQKeyboardManager.sharedManager();
// iqKeyboard.toolbarDoneBarButtonItemText             = "OK";
// iqKeyboard.canAdjustAdditionalSafeAreaInsets        = true;
// iqKeyboard.shouldFixInteractivePopGestureRecognizer = true;
// Angular
[...]
import { OnInit, OnDestroy, ElementRef, ViewChild } from "@angular/core";
[...]
// NativeScript
[...]
import { ios as iosApp } from "tns-core-modules/application/application";
[...]
@ViewChild("element") private _element: ElementRef<StackLayout>; // FlexboxLayout, GridLayout, etc.
private _keyboardHeight: number = 0;
private _elementHeight:  number = 0;
private _observerIDs:    Array<object> = new Array();
// Start events when the component is ready
ngOnInit(): void {
    // iOS keyboard events
    if (iosApp) {
        let eventNames: Array<string> = [
                UIKeyboardWillShowNotification,
                UIKeyboardDidShowNotification,
                UIKeyboardWillHideNotification
            ];
        // Catch the keyboard height before it appears
        this._observerIDs.push({
            event: eventNames[0],
            id: iosApp.addNotificationObserver(eventNames[0], (event) => {
                    let currHeight: number = this._keyboardHeight,
                        newHeight:  number = event.userInfo.valueForKey(UIKeyboardFrameEndUserInfoKey).CGRectValue.size.height;
                    if (currHeight != newHeight) {
                        this._keyboardHeight = newHeight;
                    }
                })
        });
        // Position the element according to the height of the keyboard
        this._observerIDs.push({
            event: eventNames[1],
            id: iosApp.addNotificationObserver(eventNames[1], (event) => {
                    if (this._elementHeight == 0) {
                        this._elementHeight = this._element.nativeElement.getActualSize().height;
                    }
                    this._element.nativeElement.height = this._keyboardHeight + this._elementHeight;
                })
        });
        // Reposition the element according to its starting height
        this._observerIDs.push({
            event: eventNames[2],
            id: iosApp.addNotificationObserver(eventNames[2], () => {
                    this._element.nativeElement.height = this._elementHeight; // or "auto";
                })
        });
    }
}
// Stop events to avoid a memory leak
ngOnDestroy(): void {
    if (iosApp) {
        let index: number = 0;
        for (index; index < this._observerIDs.length; index++) {
            let observerId: number = this._observerIDs[index]['id'],
                eventName:  string = this._observerIDs[index]['event'];
            iosApp.removeNotificationObserver(observerId, eventName);
        }
    }
}

马塞尔·普洛奇的原作：https://gist.github.com/marcel-ploch/bf914dd62355049a0e5efb4885ca4c6e