Upload image is working in Android device but not in IonicView

Here’s my test. I connected an android device in my PC. Then ran ionic cordova run android. It load the app in the android device. I was able to test the upload image and it works fine. I deploy/publish code to Ionic View (pro). I opened the Ionic View app in my Iphone device. Tested the app but nothing happens when I click (which should navigate to images/download folder.

  editimage() {
    let statusalert = this.alertCtrl.create({
      buttons: ['okay']
    });
    this.imgSvc.uploadimage().then((url: any) => {
      this.userservice.updateimage(url).then((res: any) => {
        if (res.success) {
          statusalert.setTitle('Updated');
          statusalert.setSubTitle('Your profile pic has been changed successfully!!');
          statusalert.present();
          this.zone.run(() => {
          this.avatar = url;
        })
        }
      }).catch((err) => {
          statusalert.setTitle('Failed');
          statusalert.setSubTitle('Your profile pic was not changed');
          statusalert.present();
      })
      })
  }

And the imgSvc.uploadimage() is this:

  uploadimage() {
    var promise = new Promise((resolve, reject) => {
        this.filechooser.open().then((url) => {
          (<any>window).FilePath.resolveNativePath(url, (result) => {
            this.nativepath = result;
            (<any>window).resolveLocalFileSystemURL(this.nativepath, (res) => {
              res.file((resFile) => {
                var reader = new FileReader();
                reader.readAsArrayBuffer(resFile);
                reader.onloadend = (evt: any) => {
                  var imgBlob = new Blob([evt.target.result], { type: 'image/jpeg' });
                  var imageStore = this.firestore.ref('/profileimages').child(firebase.auth().currentUser.uid);
                  imageStore.put(imgBlob).then((res) => {
                    this.firestore.ref('/profileimages').child(firebase.auth().currentUser.uid).getDownloadURL().then((url) => {
                      resolve(url);
                    }).catch((err) => {
                        reject(err);
                    })
                  }).catch((err) => {
                    reject(err);
                  })
                }
              })
            })
          })
      })
    })    
     return promise;   
  }

What plugins are you using?

Ionic View only supports a limited number of plugins: https://docs.ionic.io/tools/view/#supported-plugins

These are the plugins I use:

            "cordova-plugin-geolocation": {},
            "cordova-plugin-file": {},
            "cordova-plugin-filechooser": {},
            "cordova-plugin-filepath": {},
            "cordova-plugin-console": {},
            "cordova-plugin-device": {},
            "cordova-plugin-splashscreen": {},
            "cordova-plugin-statusbar": {},
            "cordova-plugin-whitelist": {},

Are the plugins listed here pretty much accurate? https://docs.ionic.io/tools/view/#supported-plugins
Also are those plugins listed works for both iOS and Android?

Yes, the list is accurate for the old (white icon) Ionic View.
If you are using the new (blue icon) one, I think there is no published list of supported plugins yet.