Question

我正在使用nativescript angular项目开发android和ios应用程序。我想访问使用android studio创建的android库（aar），我在nativescript中创建了一个插件项目，并将aar文件放在插件项目。我也已将插件项目安装到我的项目中并运行它，但无法正常工作。如何解决该问题

我的Java代码是：

package com.deemsysinc;

import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.widget.ScrollView;

public class ResponsiveScrollView extends ScrollView {
    public interface OnEndScrollListener {
        public void onEndScroll(int x,int y);
    }

    private boolean mIsFling;
    private OnEndScrollListener mOnEndScrollListener;

    public ResponsiveScrollView(Context context) {
        this(context, null, 0);
    }

    public ResponsiveScrollView(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public ResponsiveScrollView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    public void fling(int velocityY) {
        super.fling(velocityY);
        mIsFling = true;
        Log.d("FlingCalled","true");
    }

    @Override
    protected void onScrollChanged(int x, int y, int oldX, int oldY) {
        super.onScrollChanged(x, y, oldX, oldY);
        if (mIsFling) {
            if (Math.abs(y - oldY) < 2 || y >= getMeasuredHeight() || y == 0) {
                if (mOnEndScrollListener != null) {
                    mOnEndScrollListener.onEndScroll(x,y);
                }
                mIsFling = false;
            }
        }
    }

    public OnEndScrollListener getOnEndScrollListener() {
        return mOnEndScrollListener;
    }

    public void setOnEndScrollListener(OnEndScrollListener mOnEndScrollListener) {
        this.mOnEndScrollListener = mOnEndScrollListener;
    }

}

我正在像这样调用我的android本机类：

declare var com: any

 export class FoodCourtScroll extends ScrollView
{
    protected attachNative() {
        (<any>ScrollView.prototype).attachNative.call(this);

    }
    public createNativeView() {
        return this.orientation === "horizontal" ? new org.nativescript.widgets.HorizontalScrollView(this._context) : new com.example.admin.scrollwork.ResponsiveScrollView(this._context);
    }


}

我的插件项目中的

Package.json是：

{
    "name": "nativescript-fscroll",
    "version": "0.0.1",
    "main": "index.js",
    "nativescript": {
    }
  }

请帮助解决该问题。

我的app.module.ts文件：

import { NgModule, NO_ERRORS_SCHEMA } from "@angular/core";

import { NativeScriptModule } from "nativescript-angular/nativescript.module";

import {ActiveComponents,AppRoutingModule } from "./app-routing.module";
import { AppComponent } from "./app.component";
import { NativeScriptUIListViewModule } from "nativescript-ui-listview/angular";
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
import {NativeScriptFormsModule } from "nativescript-angular/forms";
import { NativeScriptHttpModule } from "nativescript-angular/http";
import { NativeScriptHttpClientModule } from "nativescript-angular/http-client";


import { DataService } from "~/app/data_services/data_services"
import { RestaurantService } from "~/app/services/restaurant.service";
import { NetWorkMonitor } from "~/app/Utils/NetworkMonitor";
import { AccordionModule } from "nativescript-accordion/angular";
import { TNSCheckBoxModule } from "nativescript-checkbox/angular";
import { NgRippleModule } from 'nativescript-ng-ripple';
import { CartService } from "~/app/services/cart.service";
import { ScrollView } from "ui/scroll-view";




import { registerElement } from "nativescript-angular";
import { OrderService, OrderData } from "~/app/services/order.service";
//import { FoodCourtScroll } from "~/app/Utils/deemsys_scroll";
import { DropDownModule } from "nativescript-drop-down/angular";

registerElement("PreviousNextView", () => require("nativescript-iqkeyboardmanager").PreviousNextView);


declare var org, android;

let ResponsiveScrollView;

function init() {
    class ResponsiveScrollViewImpl extends org.nativescript.widgets.VerticalScrollView {
        public mIsFling: boolean = false;
        public fling(velocityY: any) {
            super.fling(velocityY);
            this.mIsFling = true;
        }
    }
    ResponsiveScrollView = ResponsiveScrollViewImpl;
}

class FoodCourtScroll extends ScrollView {
    createNativeView() {
        init();
        return new ResponsiveScrollView(this._context);
    }

    protected attachNative() {
        const that = new WeakRef(this);

        (<any>this).handler = new android.view.ViewTreeObserver.OnScrollChangedListener({
            onScrollChanged: function (x: number, y: number, oldX: number, oldY: number) {
                const owner: ScrollView = that.get();
                if (owner) {
                    (<any>owner)._onScrollChanged();
                    console.log("mIsFling: " + owner.nativeViewProtected.mIsFling);
                    if (owner.nativeViewProtected.mIsFling) {
                        if (Math.abs(y - oldY) < 2 || y >= owner.nativeViewProtected.getMeasuredHeight() || y == 0) {
                            owner.nativeViewProtected.mIsFling = false;
                            owner.notify({
                                object: owner,
                                eventName: "dragEnd",
                                scrollX: x,
                                scrollY: y
                            });
                        }
                    }
                }
            }
        });

        this.nativeViewProtected.getViewTreeObserver().addOnScrollChangedListener((<any>this).handler);
    }
}

registerElement("FoodCourtScroll", () => FoodCourtScroll);



@NgModule({
    bootstrap: [
        AppComponent
    ],
    imports: [
        NativeScriptModule,
        AppRoutingModule,
        NativeScriptUIListViewModule,
        NativeScriptFormsModule,
        FormsModule,
        ReactiveFormsModule,
        NativeScriptHttpModule,
        NativeScriptHttpClientModule,
        AccordionModule,
        TNSCheckBoxModule,
        NgRippleModule,
        DropDownModule
    ],
    declarations: [
        AppComponent,
        ...ActiveComponents,

    ],
    providers: [
        NetWorkMonitor,
        DataService,
        RestaurantService,
        CartService,
        OrderService,
        OrderData
    ],
    schemas: [
        NO_ERRORS_SCHEMA
    ]
})
export class AppModule { }

我的HTML文件：

  <ActionBar title="Menu" class="action-bar">
        <ActionItem icon="res://search_red" ios.position="right" android.position="right"></ActionItem>
        <!-- <StackLayout orientation="horizontal" ios.position="right">
                        <Image src="res://search_red" class="action-image"></Image>
        </StackLayout> -->
        <NavigationButton text="" icon="res://ic_arrow_red" (tap)="onNavBtnTap()"></NavigationButton>        
</ActionBar>
<GridLayout rows="55,*,50">
        <ScrollView #categoryList (scroll)="onHorizontalScroll($event)" orientation="horizontal"  row="0" (loaded)="onLoaded($event)">
                <StackLayout class="m-t-10 m-l-5 m-r-5" orientation="horizontal" >
                        <StackLayout orientation="horizontal" *ngFor="let category of AllMenuList; let a=index;" >
                                        <Label height="55" width="170" [id]="category.categoryname" [class.category-label-Selected]="a===selectedIndex" class="category-label" [text]="category.categoryname" (tap)="onCategoryClick(a)"></Label>
                                        <Label width="10"></Label>  
                        </StackLayout>
                </StackLayout>
        </ScrollView>
        <FoodCourtScroll id="subMenuScroll"  (dragEnd)="onDragEnd($event)" (scrollEnds)="onScrollEnds($event)" (onScrollEnd)="onScrollEndd($event)"  (scroll)="onVerticalScroll($event)" #ScrollList class="m-t-10" orientation="vertical" row="1">
            <StackLayout id="vscroll">
                <StackLayout   width="100%"  class="m-t-20 m-l-10" orientation="vertical" *ngFor="let category of AllMenuList; let i=index;" (tap)="onCellClick($event)">
                                <StackLayout [id]="category.categoryname" width="100%"  >
                                <Label  class="category-name" [text]="category.categoryname"></Label>
                                <StackLayout class="m-t-30" orientation="vertical" *ngFor="let food of category.menus; let k=index;" >
                                                <GridLayout  rows="auto,auto,auto,auto">
                                                                <StackLayout row="0"  orientation="horizontal">
                                                                    <Image [src]="food.cuisineType==1? '~/app/images/veg.png':'~/app/images/nonveg.png'" height="15" width="15"></Image>
                                                                    <Label class="food-name" [text]="food.menuname"></Label>
                                                                </StackLayout>
                                                                <Label [text]="'$'+food.price" row="1" class="food-price"></Label>
                                                                <Button [visibility]="!food.isCountEnabled? 'visible': 'collapse'" class="add-button" row="1" horizontalAlignment="right" text="ADD" (tap)="Add(i,k)"></Button>
                                                                <GridLayout [visibility]="food.isCountEnabled? 'visible':'collapse'" class="plusandminuscontainer" row="1" horizontalAlignment="right">
                                                                        <Label horizontalAlignment="left" verticalAlignment="center" class="minus" text="&#xf068;" (tap)="decrement(i,k)"></Label>
                                                                        <Label horizontalAlignment="center" verticalAlignment="center" class="count-label" [text]="food.itemCount"></Label>
                                                                        <Label horizontalAlignment="right" verticalAlignment="center" class="plus" text="&#xf067;" (tap)="increment(i,k)"></Label>
                                                                </GridLayout>
                                                                <StackLayout class="prep-container" row="2" orientation="horizontal">
                                                                    <Label class="time-icon" text="&#xf017;"></Label>
                                                                    <Label class="prep-time" [text]="food.preptime + ' minutes' "></Label>
                                                                </StackLayout>
                                                                <StackLayout row="3" class="hr-light m-l-20 m-t-10" ></StackLayout>
                                                            </GridLayout>
                                </StackLayout>

                        </StackLayout>
                </StackLayout>
            </StackLayout>
        </FoodCourtScroll>
        <GridLayout [visibility]="cartItem==0? 'collapse':'visible'"  class="anim-itemInfo cart-container" row="2">
            <StackLayout orientation="horizontal" horizontalAlignment="left">
                <Label verticalAlignment="center" class="m-l-10 cart-label" [text]="cartItem + ' Items'"></Label>
                <Label verticalAlignment="center" class="m-l-10 cart-label" text="|"></Label>
                <Label verticalAlignment="center" class="m-l-10 cart-label" [text]="'$'+cartTotal"></Label>
            </StackLayout>
            <Label verticalAlignment="center" class="m-r-10 viewcart-label" text="VIEW CART &#xf217;" horizontalAlignment="right"></Label>
        </GridLayout>
    </GridLayout>

与HTML相关的ts文件：

import { Component, OnInit, AfterViewInit,ViewChild, ElementRef} from "@angular/core";
import {Page, borderTopRightRadiusProperty} from "ui/page";
import { isIOS, isAndroid } from 'tns-core-modules/platform';
import { RadListView, ListViewEventData } from "nativescript-ui-listview";
//import { RestaurentMenuModel,RestaurentSubMenuModel } from "~/app/models/restaurant";
import { ObservableArray } from "tns-core-modules/data/observable-array";
import { run } from "tns-core-modules/application/application";
import { ScrollEventData, ScrollView } from "tns-core-modules/ui/scroll-view/scroll-view";
import { RouterExtensions } from "nativescript-angular/router";
import { StackLayout } from "tns-core-modules/ui/layouts/stack-layout/stack-layout";
import { Label } from "tns-core-modules/ui/label/label";
import { analyzeAndValidateNgModules } from "@angular/compiler";
import * as utils from "tns-core-modules/utils/utils";
import { setTimeout, setInterval} from "tns-core-modules/timer";
import { EventData } from "data/observable";
import { FoodScrollDelegate } from "~/app/Utils/scroll_delegate";

declare var UITableViewCellSelectionStyle;
declare var UIView, NSMutableArray, NSIndexPath;

//declare var setShowsHorizontalScrollIndicator;



@Component({
    selector:"restaurant_menu",
    moduleId:module.id,
    templateUrl:"./restaurant_menu.component.html",
    styleUrls:["./restaurant_menu.component.css"],
})

export class RestaurantMenu  implements OnInit
{
    //public cartCount:Number=1;
    @ViewChild("ScrollList") scrollList:ElementRef;
    @ViewChild("categoryList") categoryList:ElementRef;
    public AllMenuList:any;
    public cartTotal:any=0;
    public cartItem:any=0;
    public isCartVisible=false;
     incrementItem:any=0;
     decrementItem:any=0;
     categoryContainer:Label;
     subMenuContainers:StackLayout;
     offsetValue:any=0;
     dummyStatus:any=0;
     iterate:any=0;
     horizontalOffsetvalue:any=0;
     calculationValue:any=0;
     lengthHorizontaloffsetLength:any=0;   
     public selectedIndex:Number=0;
     public scrollEnabled:Boolean=false;
     lastItemY:Number=0;
     subMenuScroll:ScrollView;
     foodScrollDelegate:FoodScrollDelegate;
     public id;   
    _delegate:any;
    constructor(private page:Page,public routerExtension:RouterExtensions)
    {

    }
    ngOnInit()
    {
        this.subMenuScroll=this.page.getViewById("subMenuScroll");
        //this.subMenuScroll.ios.delegate=FoodScrollDelegate.initWithOriginalDelegate(this._delegate);
       //console.log("PrintDelegate"+this.foodScrollDelegate.scrollViewDidEndDraggingWillDecelerate);
    //    this.foodScrollDelegate=new FoodScrollDelegate();
    //    this.foodScrollDelegate.yvalue.subscribe(yvalue=>{
    //         console.log("TheYYValue"+yvalue);
    //     });



    }
    onLoaded(event)
    {
        const scrollview = event.object;
        if (scrollview.ios) {
            scrollview.ios.showsHorizontalScrollIndicator = false;
        }
        else
        {
            scrollview.android.setHorizontalScrollBarEnabled(false);
        }
    }

    onNavBtnTap()
    {
        this.routerExtension.backToPreviousPage();
    }

    public onHorizontalScroll(args:ScrollEventData)
    {
        // console.log("scrollX: " + args.scrollX);
        // console.log("scrollY: " + args.scrollY); 
    }
    public onVerticalScroll(args: ScrollEventData) {
        console.log("Scrolling")
        }
    onScrollEndd(event)
     {
         console.log("TheAndroidEvent"+event.y);
     }










}

Answer 1

对于像这样的简单实现，您不需要AAR库。您可以在这里处理您的项目

declare var org, android;

let ResponsiveScrollView;

function init() {
    class ResponsiveScrollViewImpl extends org.nativescript.widgets.VerticalScrollView {
        public mIsFling: boolean = false;

        constructor(context) {
          super(context);
          return global.__native(this);
        }

        public fling(velocityY: any) {
            super.fling(velocityY);
            this.mIsFling = true;
        }
    }
    ResponsiveScrollView = ResponsiveScrollViewImpl;
}

class FoodCourtScroll extends ScrollView {
    createNativeView() {
        init();
        return new ResponsiveScrollView(this._context);
    }

    protected attachNative() {
        const that = new WeakRef(this);

        (<any>this).handler = new android.view.ViewTreeObserver.OnScrollChangedListener({
        onScrollChanged: function () {
            const owner: ScrollView = that.get();
            if (owner) {
                const nativeView = owner.nativeViewProtected;
                if (nativeView) {

                    const x = nativeView.getScrollX();
                    const y = nativeView.getScrollY();
                    const oldX = (<any>owner)._lastScrollX;
                    const oldY = (<any>owner)._lastScrollY;

                    console.log("mIsFling: " + nativeView.mIsFling);
                    console.log("newX: " + x);
                    console.log("oldX: " + oldX);
                    console.log("newY: " + y);
                    console.log("oldY: " + oldY);

                    if (nativeView.mIsFling) {
                        if (Math.abs(y - oldY) < 2 || y >= owner.nativeViewProtected.getMeasuredHeight() || y == 0) {
                            owner.nativeViewProtected.mIsFling = false;
                            owner.notify({
                                object: owner,
                                eventName: "dragEnd",
                                scrollX: x,
                                scrollY: y
                            });
                        }
                    }

                }
                (<any>owner)._onScrollChanged();
            }
        }
    });

        this.nativeViewProtected.getViewTreeObserver().addOnScrollChangedListener((<any>this).handler);
    }
}

registerElement("FoodCourtScroll", () => FoodCourtScroll);

这里是Playground Sample，请确保有条件地执行特定于Android的代码，以免破坏iOS版本。您可以考虑编写实现FoodCourtScroll的特定于平台的TS文件，或仅基于平台使用if条件。

注意：：fling从未调用过，我以前从未使用过。因此，您可能要在此处检查实施情况。

如何从我的nativescript angular项目访问由android studio创建的aar库？

1 个答案: