我想使用angular2数据绑定以编程方式更新TextField文本属性。从here看起来我会在我的布局中设置[(ngModel)] =“email”,然后在我的代码中添加一个属性电子邮件。使用当前设置,我可以在加载时更改文本属性,但是如果我尝试以编程方式从按钮更改文本属性,则单击对电子邮件的更改不会反映在视图的TextField文本属性中。
import { Component, OnInit } from '@angular/core';
import { User } from '../../shared/user/user';
import { LoginModel } from '../../model/login/login-model';
import { HttpService } from '../../services/http/http-service';
@Component({
selector:'login',
templateUrl:'pages/login/login.component.html',
providers: [HttpService]
})
export class LoginComponent implements OnInit {
email:string = "test@live.com";
user: User;
//model: LoginModel;
constructor(private _httpService: Httpservice) {
//this.model = new LoginModel();
this.user = new User();
} //default constructor
ngOnInit() {}
onButtonTap() {
//alert("onButtonTap clicked ");
//this._mpixService.register(this.model.user);
this.email = "Changed@live.com";
alert("onButtonTap clicked " + this.email);
}
}
我的观点
<ActionBar title="Login Mpix Tap To Print">
<ActionItem text="Login" android.systemIcon="ic_menu_share_holo_dark" ios.systemIcon="9" ios.position="right"></ActionItem>
</ActionBar>
<StackLayout>
<TextField hint="Email Address" keyboardType="email"
autocorrect="false" autocapitalization="none" [text]="email"></TextField>
<TextField hint="Password" secure="true" keyboardType="password"
autocorrect="false" autocapitalization="none" [(ngModel)]="password"></TextField>
<Button text="Sign In" (Tap)='onButtonTap()'></Button>
<Button text="Sign up for Mpix" [nsRouterLink]="['/signup']"></Button>
</StackLayout>
我也尝试过TextField视图属性的变体
<TextField hint="Email Address" keyboardType="email" autocorrect="false" autocapitalization="none" [text]="email" (emailChange)="email=$event"></TextField>
<TextField hint="Email Address" keyboardType="email" autocorrect="false" autocapitalization="none" [(ngModel)]="email" [text]=email></TextField>
<TextField hint="Email Address" keyboardType="email" autocorrect="false" autocapitalization="none" [(ngModel)]="email">{{email}}</TextField>
首次加载界面时,文本字段设置为test@live.com。
答案 0 :(得分:17)
您可能必须将表单模块从NativeScript导入到NgModule导入数组中:
从&#34; nativescript-angular / forms&#34;中导入{NativeScriptFormsModule};
和NgModule属性
@NgModule({imports:[NativeScriptFormsModule]})
答案 1 :(得分:0)
此问题已通过最近的更新修复。在下面的链接中有更多详细信息,基本上存在一个无关的构建问题,即在我的代码能够运行之前停止代码。在更新了tns-core-modules和nativescript-angular后,它使用了上面的代码。