javascript - Ionic 4 更改带有自定义图标的 ion-tab-button

Question

单击后，我正在尝试ion-icon使用自定义 src进行更改ion-tab-button

我已经尝试过，使用（点击）事件触发功能并更改离子图标内的 [src]="..."

有什么合适的方法来改变这种骇人听闻的风格吗？

HTML：

 <ion-tabs>
  <ion-tab-bar slot="bottom">
    <ion-tab-button tab="news/home" (click)="changeNewsIcon()">
      <ion-icon [src]="newsIcon"></ion-icon>
      <ion-label class="tab-title">News</ion-label>
    </ion-tab-button>
    <ion-tab-button tab="user" (click)="changeSearchIcon()">
      <ion-icon [src]="searchIcon"></ion-icon>
      <ion-label class="tab-title">Search</ion-label>
    </ion-tab-button>
    <ion-tab-button tab="networking" (click)="changeNetworkIcon()">
      <ion-icon [src]="notiIcon"></ion-icon>
      <ion-label class="tab-title">Networking</ion-label>
    </ion-tab-button>
    <ion-tab-button tab="chat" (click)="changeChatIcon()">
      <ion-icon [src]="chatIcon"></ion-icon>
      <ion-label class="tab-title">Chat</ion-label>
    </ion-tab-button>
    <ion-tab-button tab="profile" (click)="changeProfIcon()">
      <ion-icon [src]="profIcon"></ion-icon>
      <ion-label class="tab-title">Profile</ion-label>
    </ion-tab-button>
  </ion-tab-bar>
</ion-tabs>

TS：

newsIcon = './assets/tabs/home.svg';
searchIcon = './assets/tabs/search.svg';
notiIcon = './assets/tabs/group.svg';
chatIcon = './assets/tabs/chat.svg';
profIcon = './assets/tabs/user.svg';

changeNewsIcon(): void {    
  // change news icon
  this.newsIcon = './assets/tabs/clicked-home.svg';

  // reset others icon
  this.searchIcon = './assets/tabs/search.svg';
  this.notiIcon = './assets/tabs/group.svg';
  this.chatIcon = './assets/tabs/chat.svg';
  this.profIcon = './assets/tabs/user.svg';
}

changeSearchIcon(): void {
  // change user icon
  this.searchIcon = './assets/tabs/clicked-search.svg';

  // reset others icon
  this.newsIcon = './assets/tabs/home.svg';
  this.notiIcon = './assets/tabs/group.svg';
  this.chatIcon = './assets/tabs/chat.svg';
  this.profIcon = './assets/tabs/user.svg';
}

...

感谢是否有人会提供帮助

标签： javascriptangularionic-frameworkionic4

Answer 1

我不确定我的方法是否更好，但这可能是做同样事情的另一种方式。

HTML：

<ion-tabs>
    <ion-tab-bar slot="bottom">
      <ion-tab-button tab="news/home" (click)="changeNewsIcon()">
        <ion-icon [src]="isNewsSelected ? newsIcon : clickedNewsIcon"></ion-icon>
        <ion-label class="tab-title">News</ion-label>
      </ion-tab-button>
      <ion-tab-button tab="user" (click)="changeSearchIcon()">
        <ion-icon [src]="isSearchSelected ? searchIcon clickedSearchIcon"></ion-icon>
        <ion-label class="tab-title">Search</ion-label>
      </ion-tab-button>
    </ion-tab-bar>
</ion-tabs>

打字稿组件：

export class SomeComponent {

  newsIcon = './assets/tabs/home.svg';
  clickedNewsIcon = './assets/tabs/clicked-home.svg';
  searchIcon = './assets/tabs/search.svg';
  clickedSsearchIcon = './assets/tabs/clicked-search.svg';

  isNewsSelected = false;
  isSearchSelected= false;

  changeNewsIcon(): void {    
    resetAll();
    this.isNewsSelected = true;
  }

  changeSearchIcon(): void {
   resetAll();
   this.isSearchSelected = true;
  }

  resetAll(){
    this.isNewsSelected = false;
    this.isSearchSelected= false;
  }
}