我正在使用Ionic App,并且已使用文件输入来更新Ionic App中的图像。
这是我的 updateimage.html :
<ion-content padding style="text-align: center;">
<ion-grid align-items-center justify-content-center style="height: 100%;">
<ion-row align-items-center justify-content-center style="height: 100%;">
<ion-col align-self-center justify-content-center col-12 col-md-6 col-xl-3 style="text-align: center;">
<h2 class="myformh2">Update Profile Picture</h2>
<h4 class="myformh2">Image Preview</h4>
<img src="{{imageUrl ? imageUrl : './assets/imgs/def_face.jpg' }}" class="newimg22" />
<form [formGroup]="updateprofileimg" (ngSubmit)="changeProfileImage()">
<ion-list>
<ion-item class="newitem2">
<ion-input placeholder="Upload Image" type="file" (change)="onImageSelected($event)"
[(ngModel)]="img_upload" formControlName="img_upload" required></ion-input>
</ion-item>
<div>
<button [disabled]="!updateprofileimg.valid" ion-button type="submit" class="newbtn11" color="primary"
block>Change Profile Picture</button>
</div>
</ion-list>
</form>
</ion-col>
</ion-row>
</ion-grid>
</ion-content>
在此html中,用户可以更新个人资料图片。
这是我的 updateimage.ts :
import { Component } from '@angular/core';
import { IonicPage, NavController, NavParams, AlertController } from 'ionic-angular';
import { Validators, FormBuilder, FormGroup } from '@angular/forms';
import { RestapiProvider } from '../../providers/restapi/restapi';
import { Storage } from '@ionic/storage';
import { ManageaccountPage } from './../manageaccount/manageaccount';
@IonicPage()
@Component({
selector: 'page-updateimage',
templateUrl: 'updateimage.html',
})
export class UpdateimagePage {
updateprofileimg : FormGroup;
img_upload: any = [];
selectedImage;
imageUrl;
converted_image;
responseEdit: any;
constructor(public navCtrl: NavController, public navParams: NavParams,
private formBuilder: FormBuilder, public restProvider: RestapiProvider,
private storage: Storage, private alertCtrl: AlertController) {
this.updateprofileimg = this.formBuilder.group({
img_upload: ['', Validators.required],
});
}
ionViewDidLoad() {
console.log('ionViewDidLoad UpdateimagePage');
}
onImageSelected(event) {
this.selectedImage = event.target.files[0];
let reader = new FileReader();
reader.onload = (e: any) => {
this.imageUrl = e.target.result;
this.converted_image = "data:image/jpeg;base64,"+this.imageUrl;
};
reader.readAsDataURL(this.selectedImage);
}
changeProfileImage()
{
this.storage.get("ID").then((val) =>
{
if(val)
{
var fd = new FormData();
fd.append('upic', this.selectedImage, this.selectedImage.name);
fd.append('user_id', val);
this.restProvider.updateprofileimg(fd, 'update_profilepic/'+val).subscribe((data) => {
//console.log(data);
if (data) {
this.responseEdit = data;
//console.log(this.responseEdit.msg);
if (this.responseEdit.status === 'success') {
this.presentAlert(this.responseEdit.msg);
}
}
});
}
});
}
presentAlert($mess) {
let alert = this.alertCtrl.create({
title: $mess,
buttons: [
{
text: 'Dismiss',
role: 'cancel',
handler: () => {
this.navCtrl.setRoot(ManageaccountPage);
}
}]
});
alert.present();
}
}
这是用于更新个人资料图像的代码,它是工作文件。我正在将此图片显示在侧边栏。
这是我的 app.html :
<ion-grid class="formenu2">
<ion-row align-items-center class="mymenuicons22">
<ion-col col-4>
<img class="imgsection12" [src]="profileImage" />
</ion-col>
</ion-row>
</ion-grid>
我在此显示用户个人资料图像。
这是我的 app.component.ts :
profileImage = './assets/imgs/hipster-man.jpg';
this.events.subscribe('userprofile:created', (data) => {
this.userpimage = data;
this.profileImage = `http://demowebsitedemo.com/uploads/user/${this.userpimage}`;
});
最初,个人资料图像设置为默认,并且当用户登录时,它将添加原始的个人资料图像。
这是我的 login.ts :
createUserp(prouser) {
this.events.publish('userprofile:created', prouser);
}
getloginUsers(){
this.restProvider.getUsers(this.userData, 'user_Login').subscribe((data) => {
if (data) {
this.responseData = data;
this.userprofile = this.responseData.msg.user_img;
if (this.responseData.status === 'success') {
this.createUserp(this.userprofile);
}
else{
this.presentAlert();
}
}
});
}
在此ts文件中,当用户登录时,它将在边栏中添加原始个人资料图片。
问题在于,当用户登录和用户更新配置文件时,它不会显示更新的配置文件图像。它将仅显示前一张图像。当我单击注销按钮并再次登录时,它将显示更新的图像。
非常感谢您的帮助。