Inoic4 learning notes 2

0、 modular ： Every tab It's just a module

1、 Introduction to core catalogue

2、 Routing core file app.module.ts Reading

// file ： Root module   tell Ionic How to assemble an application 

//Ionic angular Core module 
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { RouteReuseStrategy } from '@angular/router';
import { IonicModule, IonicRouteStrategy } from '@ionic/angular';

//ionic  Pack it up app Configure the startup screen later , And the service of navigation bar （ Never mind ）
import { SplashScreen } from '@ionic-native/splash-screen/ngx';
import { StatusBar } from '@ionic-native/status-bar/ngx';

// Introduce routing profile 
import { AppRoutingModule } from './app-routing.module';

// Introduce the root component 
import { AppComponent } from './app.component';

@NgModule({
  declarations: [AppComponent], /** Declare components  */
  entryComponents: [],// Configure components that will not be used in the template 
  imports: [BrowserModule, IonicModule.forRoot(), AppRoutingModule],// Introduce dependency modules 
  providers: [// dependent service 
    StatusBar,
    SplashScreen,
    { provide: RouteReuseStrategy, useClass: IonicRouteStrategy }
  ],
  bootstrap: [AppComponent]
})
export class AppModule {}

3、 Execute process interpretation

When the page loads , Matching routing

app-routing.module.ts

It is loaded with routes tabs-routing.module.ts

tabs Modules are loaded inside tab1

4、 Create a module : stay app Create one under the folder tab4 Folder , There are relevant component files under the folder

ionic -g page tab4

5、 Button click jump function

<ion-button color="primary" [routerLink]="['/news']"> Jump to the news </ion-button>

6、 Add a return button in the page header

 <ion-buttons slot="start">
      <ion-back-button></ion-back-button>
    </ion-buttons>