问题
I use mat-form-field with custom css in order to change the be look like appearance="outline" directive.
In Angular Material v 7.2.1 appearance="outline" was added to the mat-form-field options.
How can I declare appearance="outline" as a default for each input fields in my app?
回答1:
you can try to inject mat-form-field default options in your @NgModule:
...
providers: [
{ provide: MAT_FORM_FIELD_DEFAULT_OPTIONS, useValue: { appearance: 'outline' } }
],
...
There was an issue with this https://github.com/angular/material2/issues/12765, but I believe it has been solved.
来源：https://stackoverflow.com/questions/54398324/set-default-directive-for-all-input-in-app