Angular7实现拖放Drag Drop示例详解

npm install @angular/cdk --save

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppRoutingModule , RoutingComponent} from './app-routing.module';
import { AppComponent } from './app.component';
import { NewCmpComponent } from './new-cmp/new-cmp.component';
import { ChangeTextDirective } from './change-text.directive';
import { SqrtPipe } from './app.sqrt';
import { MyserviceService } from './myservice.service';
import { HttpClientModule } from '@angular/common/http';
import { ScrollDispatchModule } from '@angular/cdk/scrolling';
import { DragDropModule } from '@angular/cdk/drag-drop';
@NgModule({
   declarations: [
      SqrtPipe,
      AppComponent,
      NewCmpComponent,
      ChangeTextDirective,
      RoutingComponent
   ],
   imports: [
      BrowserModule,
      AppRoutingModule,
      HttpClientModule,
      ScrollDispatchModule,
      DragDropModule
   ],
   providers: [MyserviceService],
   bootstrap: [AppComponent]
})
export class AppModule { }

<a target="_blank"  href="http://jsonplaceholder.typicode.com/users" rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';

@Injectable({
   providedIn: 'root'
})
export class MyserviceService {
   private finaldata=[];
   private apiurl="http://jsonplaceholder.typicode.com/users";
   constructor(private http: HttpClient) { }
   getData() {
      return this.http.get(this.apiurl);
   }
}</a>

<a target="_blank"  href="http://jsonplaceholder.typicode.com/users" rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >
import { Component } from '@angular/core';
import { MyserviceService } from './myservice.service';
@Component({
   selector: 'app-root',
   templateUrl: './app.component.html',
   styleUrls: ['./app.component.css']
})
export class AppComponent {
   title='Angular 7 Project!';
   public personaldetails=[];
   constructor(private myservice: MyserviceService) {}
   ngOnInit() {
      this.myservice.getData().subscribe((data) => {
         this.personaldetails=Array.from(Object.keys(data), k=>data[k]);
         console.log(this.personaldetails);
      });
   }
}
</a>

<a target="_blank"  href="http://jsonplaceholder.typicode.com/users" rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >
<h3>Angular 7 - Drag and Drop Module</h3>
<div>
   <div *ngFor="let item of personaldetails; let i=index" class="divlayout” >
      {{item.name}}
      </div>
</div>
</a>

.divlayout{
   width: 40%;
   background-color: #ccc;
   margin-bottom: 5px;
   padding: 10px 10px;
   border: 3px solid #73AD21;
}

<h3>Angular 7 - Drag and Drop Module</h3>
<div cdkDropList
   #personList="cdkDropList"
   [cdkDropListData]="personaldetails"
   [cdkDropListConnectedTo]="[userlist]"
   class="example-list"
   (cdkDropListDropped)="onDrop($event)" >
   <div *ngFor="let item of personaldetails; 
      let i=index" class="divlayout" cdkDrag>
      {{item.name}}
     </div>
</div>

import {CdkDragDrop, moveItemInArray, transferArrayItem} 
from '@angular/cdk/drag-drop';

import { Component } from '@angular/core';
import { MyserviceService } from './myservice.service';
import {CdkDragDrop, moveItemInArray, transferArrayItem} from '@angular/cdk/drag-drop';
@Component({
   selector: 'app-root',
   templateUrl: './app.component.html',
   styleUrls: ['./app.component.css']
})
export class AppComponent {
   title='Angular 7 Project!';
   public personaldetails=[];
   constructor(private myservice: MyserviceService) {}
   ngOnInit() {
      this.myservice.getData().subscribe((data) => {
         this.personaldetails=Array.from(Object.keys(data), 
         k=>data[k]);
         console.log(this.personaldetails);
      });
   }
   onDrop(event: CdkDragDrop<string[]>) {
      if (event.previousContainer === event.container) {
         moveItemInArray(event.container.data, 
            event.previousIndex, event.currentIndex);
      } else {
         transferArrayItem(event.previousContainer.data,
         event.container.data,
         event.previousIndex,
         event.currentIndex);
      }
   }
}