ionic3 升级

// 注：下载成功后如果app无法自动安装，提示exposed beyond app through Intent.getData()，需要修改AndroidManifest.xml，可以在platforms/android/app/src/main/AndroidManifest.xml 中找到文件，尽量保持android:targetSdkVersion版本在24以下。
<uses-sdk android:minSdkVersion="19" android:targetSdkVersion="23" />


// 1 安装插件
 // 权限
$ ionic cordova plugin add cordova-plugin-android-permissions
$ npm install --save @ionic-native/android-permissions
 // 文件管理
$ ionic cordova plugin add cordova-plugin-file
$ npm install --save @ionic-native/file
 // 文件上传
$ ionic cordova plugin add cordova-plugin-file-transfer
$ npm install --save @ionic-native/file-transfer
$ ionic cordova plugin add cordova-plugin-file-opener2
$ npm install --save @ionic-native/file-opener
 // 版本检测
$ ionic cordova plugin add cordova-plugin-app-version
$ npm install --save @ionic-native/app-version
 // 浏览器
$ ionic cordova plugin add cordova-plugin-inappbrowser
$ npm install --save @ionic-native/in-app-browser

//添加插件
//app.module.ts
import { AndroidPermissions } from '@ionic-native/android-permissions';
import { File } from "@ionic-native/file";
import { FileOpener } from "@ionic-native/file-opener";
import { FileTransfer,FileTransferObject } from "@ionic-native/file-transfer";
import { AppVersion } from "@ionic-native/app-version";
import { InAppBrowser} from "@ionic-native/in-app-browser";
import { NativeService } from "../provider/NativeService";

...
providers: [
    StatusBar,
    SplashScreen,
    {provide: ErrorHandler, useClass: IonicErrorHandler},
    AndroidPermissions,
    File,
    AppVersion,
    FileOpener,
    FileTransfer,
    FileTransferObject,
    NativeService,
    InAppBrowser
  ]

// 2 应用
// app.component.ts

import { Injectable } from '@angular/core';
import { Platform, AlertController } from 'ionic-angular';
import { AppVersion } from '@ionic-native/app-version';
import { File } from '@ionic-native/file';
import { FileTransfer, FileTransferObject } from "@ionic-native/file-transfer";
import { FileOpener } from '@ionic-native/file-opener';
import { AndroidPermissions } from '@ionic-native/android-permissions';
import { InAppBrowser } from '@ionic-native/in-app-browser';


@Injectable()
export class NativeService {

  constructor(private platform: Platform,
    private alertCtrl: AlertController,
    private transfer: FileTransfer,
    private appVersion: AppVersion,
    private file: File,
    private fileOpener: FileOpener,
    private androidPermissions: AndroidPermissions,
    private inAppBrowser: InAppBrowser) {
      
  }

  //检查权限
  permissionsFun(newInfo){
    this.androidPermissions.checkPermission(this.androidPermissions.PERMISSION.READ_EXTERNAL_STORAGE).then(
      result => {
        if (!result.hasPermission){
          this.androidPermissions.requestPermissions([this.androidPermissions.PERMISSION.READ_EXTERNAL_STORAGE])
            .then(result => {//弹出弹框是否允许
              if(result.hasPermission){//点击允许
                this.downloadApp(newInfo);
                // alert("允许使用LOCATION权限");
              }else{//点击拒绝
                // alert("拒绝使用LOCATION权限");
                this.platform.exitApp();//退出APP
              }
          });
        }else{
          this.downloadApp(newInfo);
          // alert("已允许位置权限" + result.hasPermission);
        }
  
      },
      err => {
        this.androidPermissions.requestPermission(this.androidPermissions.PERMISSION.ACCESS_COARSE_LOCATION)
      }
  
    );
  }



  /**
   * 检查app是否需要升级
   */
  detectionUpgrade(newInfo) {
    //这里连接后台获取app最新版本号,然后与当前app版本号(this.getVersionNumber())对比
    //版本号不一样就需要申请,不需要升级就return
    this.alertCtrl.create({
      title: '升级',
      subTitle: '发现新版本,是否立即升级？',
      enableBackdropDismiss: false,
      buttons: [{ text: '取消',
      handler: () => {
      this.platform.exitApp();
      } },
      {
        text: '确定',
        handler: () => {
          this.permissionsFun(newInfo);
        }
      }
      ]
    }).present();
  }

  /**
   * 下载安装app
   */
  downloadApp(newInfo) {
    if (this.isAndroid()) {
      let alertBut = this.alertCtrl.create({
        title: '下载进度：0%',
        enableBackdropDismiss: false,
        // buttons: ['后台下载']
      });
      alertBut.present();
      // alert(JSON.stringify(newInfo));
      const fileTransfer: FileTransferObject = this.transfer.create();
      const apk = this.file.externalRootDirectory + newInfo.FILE_NAME; //apk保存的目录
      const url = newInfo.URL + newInfo.FILE_NAME;
      fileTransfer.download(encodeURI(url), apk).then((res: any) => {
        this.fileOpener.open(apk, 'application/vnd.android.package-archive').then((value) => {
          // alert(JSON.stringify(value));
        }).catch(err => {
          // alert(JSON.stringify(err));
        });

      }).catch(error => {
        // alert(JSON.stringify(error));
      });

      fileTransfer.onProgress((event: ProgressEvent) => {
        console.log(event);
        let num = Math.floor(event.loaded / event.total * 100);
        if (num === 100) {
          alertBut.dismiss();
        } else {
          let title = document.getElementsByClassName('alert-title')[0];
          title && (title.innerHTML = '下载进度：' + num + '%');
        }
      });
    }
    // if (this.isIos()) {
    //   this.openUrlByBrowser("这里边填写下载iOS地址");
    // }
  }

  /**
   * 通过浏览器打开url
   */
  openUrlByBrowser(url: string): void {
    this.inAppBrowser.create(url, '_system');
  }

  /**
   * 是否真机环境
   * @return {boolean}
   */
  isMobile(): boolean {
    return this.platform.is('mobile') && !this.platform.is('mobileweb');
  }

  /**
   * 是否android真机环境
   * @return {boolean}
   */
  isAndroid(): boolean {
    return this.isMobile() && this.platform.is('android');
  }

  /**
   * 是否ios真机环境
   * @return {boolean}
   */
  isIos(): boolean {
    return this.isMobile() && (this.platform.is('ios') || this.platform.is('ipad') || this.platform.is('iphone'));
  }

  /**
   * 获得app版本号,如0.01
   * @description  对应/config.xml中version的值
   * @returns {Promise<string>}
   */
  versionInfo: string;
  getVersionNumber(newInfo): Promise<string> {
    return new Promise((resolve) => {
      this.appVersion.getVersionNumber().then((value: string) => {
        resolve(value);
        console.log(value);

        if (newInfo.VEISION !== value) {
          this.detectionUpgrade(newInfo);
        } else {
          this.versionInfo = '已是最新版本';
        }

      }).catch(err => {
        console.log('getVersionNumber:' + err);
      });
    });
  }
}

  getAppVersion() {
    let headers = new HttpHeaders(
      {
        'HH-Authorization': localStorage.TOKEN,
        'Content-Type': 'application/x-www-form-urlencoded',
      })
    return this.http.post(this.url + 'account/getAppVersion', '', {headers})
      .subscribe(
        (res: any) => {
          console.log(res);
          if (!res.IsErr) {

            this.nativeService.getVersionNumber(res.Data);//检查app是否升级

          } else {
            this.GlobalFun.popToastView(res.Msg);
          }

        }), (error: any) => {
          console.log(error);
        }
  }