使用带角度材料的输入类型文件2

Question

How can I use angular material 2 FAB buttons to open a browse input dialog? This can be done in HTML by this way.

<button type="button">
    <label for="file-input">click</label>
</button>
<input type="file" id="file-input" style="display:none">

I tried following the same approach with material 2, but it doesn't work.

<button md-mini-fab type="button">
    <label for="fileToUpload">
        <md-icon>add</md-icon>
    </label>
</button>
<input id="fileToUpload" type="file" style="display:none;">

Are there any other ways that will work? Thank you.

Answer 1

Here is a simple solution:

<button (click)="fileInput.click()">
  <md-icon>library_add</md-icon>
  <span>Select</span>
  <input #fileInput type="file" (change)="onFileInput($event)" style="display:none;" />
</button>

Answer 2

You need to simply trigger the click for your file input.

<button md-mini-fab type="button" onclick="document.getElementById('fileToUpload').click()">
  <label for="fileToUpload"><md-icon>add</md-icon></label>
</button>
<input id="fileToUpload" type="file" style="display:none;">

Answer 3

Try this:

<input #file type="file" [hidden]="true" accept="image/*" (change)="upload(file.files)">
<button mat-button #upload (click)="file.click()">Upload file</button>

<mat-button> is from https://material.angular.io

We are hiding the basic input button and linking the material button to the file upload.

Answer 4

I'm not sure about your cases, but in my Angular5 application I used this HTML structure for uploading files on server:

<label for="uploadPicture" class="upload-file">
   <mat-icon>add_a_photo</mat-icon>
</label>
<input type="file"
       id="uploadPicture"
       class="hidden-input"
       accept="image/jpeg, .jpeg, image/png, .png, image/pjpeg, .jpg"
       (change)="selectFile($event.target.files[0])">

In my case this solution working great. No need to trigger click event, because when you click on <label> that related to input it's same as click on input .

Answer 5

It can be a combination of md-button, md-dialog, and md-input. The mini fab button must have a click event to trigger the md-dialog component.

<button md-mini-fab type="button" (click)="openDialog()">
    <label for="fileToUpload">
      <md-icon>add</md-icon>
    </label>
</button>

Within the md-dialog component, the md-input field can be added.

<h1 md-dialog-title>Dialog</h1>
<div md-dialog-actions>
  <md-input-container>
    <input mdInput id="fileToUpload" type="file">
  </md-input-container>
  <p>
    <button md-button (click)="dialogRef.close('Option 1')">Option 1</button>
    <button md-button (click)="dialogRef.close('Option 2')">Option 2</button>
  </p>
</div>

Please see this Plunker example to get all/specific details.

Answer 6

You can use a button and an input. Make sure that button doesn't enclose input .

<button (click)="fileInput.click()">Upload</button>
<input #fileInput type="file" (change)="onFileInput($event)" multiple style="display:none;" />

You can also use a label enclosing an input.

<label>
    <mat-icon>add</mat-icon>
    <input type="file" (change)="onFileInput($event)" multiple />
</label>