luckxiang / ionic3-android-printer-demo

整个思路是通过自己制作pdf文件,然后传给安卓打印框架打印.移植文件在portable-files目录下, 设计思路见ionic安卓打印终极解决方案,支持USB打印

1安装需要用到的插件 ,一共三个,权限管理插件,打印插件,文件操作插件

权限管理需要程序运行起来就检查,打印功能需要文件存储的权限,否则无法打印.如果用浏览器查看打印效果,需要把权限管理代码屏蔽一下.这部分代码在浏览器执行会报错 安装 $ ionic cordova plugin add cordova-plugin-android-permissions $ npm install --save @ionic-native/android-permissions

代码如下:

   constructor(public navCtrl: NavController, private nativePageTransitions: NativePageTransitions, private androidPermissions: AndroidPermissions, private printer: Printer, private file: File) {
   let that =this
   this.androidPermissions.checkPermission(this.androidPermissions.PERMISSION.READ_EXTERNAL_STORAGE).then(
        result => {
			console.log('Has permission?' + result.hasPermission);
			if(!result.hasPermission) {
				that.androidPermissions.requestPermission(this.androidPermissions.PERMISSION.READ_EXTERNAL_STORAGE)
			}
		},
        err => that.androidPermissions.requestPermission(this.androidPermissions.PERMISSION.READ_EXTERNAL_STORAGE)
   );
   this.androidPermissions.checkPermission(this.androidPermissions.PERMISSION.WRITE_EXTERNAL_STORAGE).then(
        result => {
			console.log('Has permission?' + result.hasPermission)
			if(!result.hasPermission) {
				that.androidPermissions.requestPermission(this.androidPermissions.PERMISSION.WRITE_EXTERNAL_STORAGE)
			}
		},
        err => that.androidPermissions.requestPermission(this.androidPermissions.PERMISSION.WRITE_EXTERNAL_STORAGE)
   );
  }

打印插件 安装 $ ionic cordova plugin add cordova-plugin-printer $ npm install --save @ionic-native/printer

文件操作插件 当初文档写漏了,自己安装一下

2.修改插件库和拷贝js包

把libs目录拷贝到src目录下,打印需要的库就在这里边 使用前需要先导入并执行一个初始化函数

import * as jsPDF from '../../libs/jspdf/jspdf.min.js'
import * as jsPdfcust from '../../libs/jspdf/index.js'
import * as jsfont from '../../libs/jspdf/default_vfs.js'
jsPdfcust.jsPdfcust(jsPDF);

用我修改过的Printer.java 替换./platforms/android/src/de/appplant/cordova/plugin/printer/Printer.java

3.参考home.ts或者portable-files/example.ts,构造自己的格式进行打印

备注

如果只是需要先测试打印效果,只是用libs下的库即可测试,浏览器保存pdf文件用doc.save