问题
Hopefully, this is a stupid question.
I just added a md-slider to a project I am building for my employer. (thus I have no code to show sorry)
I Imported MdSliderModule into the module I'm working in. Added the tag in my template where I wanted it. It showed up and looks great but won't drag. I can click on it to change its value but I can't drag it.
Am I missing something? Does Angular have a Dragging module this component uses that I need to import? Has anyone else seen this?
We are using:
- Angular ^4.0.2
- Material 2.0.0-beta.3
Any help or suggestions of things for me to try will be helpful. Thank you in advance for your time.
回答1:
I had exactly the same problem until I discovered that I hadn't installed hammer.js.
npm install --save hammerjs
then add hammerjs as a dependency in the scripts array of your angular-cli.json file:
"scripts": [
//possibly other scripts here...
"../node_modules/hammerjs/hammer.min.js"
],
...
Hopefully this will resolve the issue - recompile everything to be sure that changes take effect
回答2:
Accepted answer alone didn't work for me. Finally found a comment in the issues on github that solved it. After ensuring hammerjs was installed per Step 5 Gesture Support added this to root.module.ts for the win:
import { BrowserModule, HAMMER_GESTURE_CONFIG } from '@angular/platform-browser';
import { GestureConfig } from '@angular/material';
providers: [
{ provide: HAMMER_GESTURE_CONFIG, useClass: GestureConfig },
]
来源：https://stackoverflow.com/questions/43529885/material-2-0-0-beta-3-md-slider-not-dragging