Creating and showing pdf in Ionic

问题:

1. I am using PDFMAKE to create a base64 encoded pdf and I tried to show it with the Iframe by giving the encoded base64 to iframe src. It works on PC but it didn't work on the mobile ( android and ios ).

   2. So, finally I stumbled upon Angularjs-PDF to show the pdf. Now, I am able see the pdf in mobile. But when I try to give custom width and height respective to device it takes. But the problem arises when I use zoom functionality, the page gets zoomed but it goes out of the screen. I can not even slide or swipe to see the content outside of the screen.

I want to make a pdf on the client side and preview to user with zoom functionality in Ionic.

If anybody got any solution for this please share, Thank You.

回答1:

So for our company app we used angular-pdf Viewer:

Here is the template for the pdf viewer template, putting inside a ion-scroll allows for pinch zoom and it works great.

<div ng-show="notLoaded" class=" center bar bar-subheader">
    <h1 class="title">Loading PDF...</h1>
</div>
<div class="tabs tabs-icon-left">
    <a class="tab-item" ng-click="goPrevious()">
        <i class="icon ion-arrow-left-c"></i>
        Prev
    </a>
    <a class="tab-item" ng-click="goNext()">
        <i class="icon ion-arrow-right-c"></i>
        Next
    </a>
</div>

<ion-scroll zooming="true" direction="xy" class="has-header">
    <canvas class="padding" id="pdf" class="rotate0"></canvas>
</ion-scroll>

then on the page that shows the pdf:

<ion-view>
    <div class="bar bar-header bar-positive">
        <button ng-click="$ionicGoBack()" class="button button-clear button-light icon-left ion-chevron-left">Go Back</button>
    </div>
    <div class="has-header">
        <ng-pdf template-url="components/pdfviewer/viewer.html" canvasid="pdf" scale="0.675">
        </ng-pdf>
    </div>
</ion-view>

You feed the template to the pdf viewer and it will show up on the page.

To use it first include the right js files:

<script src="bower_components/pdfjs-dist/build/pdf.js"></script>
<script src="bower_components/angular/angular.js"></script>
<script src="bower_components/angular-pdf-viewer/dist/angular-pdf-viewer.min.js"></script>

then inject pdf:

var app = angular.module('App', ['pdf']);

you can read more about it here, but using it in combination with ion-scroll it works just like you think it should on a native device:

https://github.com/winkerVSbecks/angular-pdf-viewer