nativescript-mediaselector

NativeScript Image Picker

Imagepicker plugin supporting both single and multiple selection.
Plugin supports iOS8+ and uses QBImagePicker cocoa pod.
For Android it uses Intents to open the stock images or file pickers. For Android 6 (API 23) and above the permissions to read file storage should be explicitly required. See demo for implementation details.

• Installation
• Configuration
• Migrating from 5.x.x to 6.x.x
• Migrating from 4.x.x to 5.x.x
• Migrating from 3.x.x to 4.x.x
• Usage
  • Import the plugin
  • Create imagepicker
  • Request permissions, show the images list and process the selection
• API
  • Methods
  • Properties
  • Image properties
• Contribute
• Get Help

Installation

In Command prompt / Terminal navigate to your application root folder and run:

tns plugin add nativescript-mediaselector
tns run

Configuration

No additional configuration required!

Migrating from 5.x.x to 6.x.x

With version 6.x.x the dependency to the nativescript-ui-listview plugin is removed and for iOS the QBImagePicker cocoa pod is used. Now the plugin supports some new features, fixes some bugs and has a more native look in iOS. You should remove any dependencies to nativescript-pro-ui, nativescript-ui-listview, etc. in case you've added them in your app specifically for this plugin. Also the options fileUri, doneText, cancelText, albumsText, newestFirst and the methods cancel() and done() are no longer applicable. The image picker now returns the basic {N} ImageAsset class (and not custom asset as before). If you have been using the fileUri property of the returned assets to get a file path in versions prior to 6.x.x, you should refer to the following issue comment for an alternative way to get the path - https://github.com/coderReview/nativescript-mediaselector/issues/181#issuecomment-384585293.

Migrating from 4.x.x to 5.x.x

With version 5.x.x major update to the plugin there is a related dependency which needs to be updated inside your project. The plugin uses internally the nativescript-ui-listview plugin (part of the NativeScript Pro UI components). Recently the monolithic NativeScript Pro UI plugin was split in multiple plugins, each of them representing a single component. Now, instead of the monolithic package, nativescript-mediaselector uses only the component it needs. To use version 5.x.x of the plugin, you need to update any dependencies to nativescript-pro-ui in your project with the single component alternatives as described in the migration guide.

Migrating from 3.x.x to 4.x.x

With the 4.x.x major update to the plugin there is a related dependency which needs to be updated inside your project. The plugin uses internally the nativescript-pro-ui plugin (previously known as nativescript-telerik-ui) which has bee updated and made 100% free. This means that if your project is using the deprecated nativescript-telerik-ui/pro plugins adding the latest version of the nativescript-mediaselector plugin will cause your project to throw an build error when working with iOS. This is because the nativescript-mediaselector has a dependency to the new nativescript-pro-ui plugin and when your project also depends on the old nativescript-telerik-ui plugin there is a native frameworks collision.

In order to solve this you simply have to update to the latest nativescript-pro-ui, more details on how to migrate from nativescript-telerik-ui/pro to nativescript-pro-ui can be found here.

Usage

The best way to explore the usage of the plugin is to inspect both demo apps in the plugin repository. In demo folder you can find the usage of the plugin for TypeScript non-Angular application. Refer to demo/app/main-page.ts. In demo-angular is the usage in an Angular app. Refer to demo-angular/app/app.component.ts.

In addition to the plugin usage, both apps are webpack configured.

In short here are the steps:

Import the plugin

TypeScript

import * as imagepicker from "nativescript-mediaselector";

Javascript

var imagepicker = require("nativescript-mediaselector");

Create imagepicker

Create imagepicker in single or multiple mode to specifiy if the imagepicker will be used for single or multiple selection of images

TypeScript

let context = imagepicker.create({
    mode: "single" // use "multiple" for multiple selection
});

Javascript

var context = imagepicker.create({ mode: "single" }); // use "multiple" for multiple selection

Request permissions, show the images list and process the selection

context
    .authorize()
    .then(function() {
        return context.present();
    })
    .then(function(selection) {
        selection.forEach(function(selected) {
            // process the selected image
        });
        list.items = selection;
    }).catch(function (e) {
        // process error
    });

NOTE: To request permissions for Android 6+ (API 23+) we use nativescript-permissions.

NOTE: Using the plugin on iOS requres photo library permission. Your app might be rejected from the Apple App Store if you do not provide a description about why you need this permission. The default message "Requires access to photo library." might not be enough for the App Store reviewers. You can customize it by editing the app/App_Resources/iOS/Info.plist file in your app and adding the following key:

<key>NSPhotoLibraryUsageDescription</key>
<string>Description text goes here</string>

API

Methods

• create(options) - creates instance of the imagepicker. Possible options are:

Option	Platform	Default	Description
mode	both	multiple	The mode if the imagepicker. Possible values are single for single selection and multiple for multiple selection.
minimumNumberOfSelection	iOS	0	The minumum number of selected assets.
maximumNumberOfSelection	iOS	0	The maximum number of selected assets.
showsNumberOfSelectedAssets	iOS	True	Display the number of selected assets.
prompt	iOS	undefined	Display prompt text when selecting assets.
numberOfColumnsInPortrait	iOS	4	Set the number of columns in Portrait orientation.
numberOfColumnsInLandscape	iOS	7	Set the number of columns in Landscape orientation.
mediaType	iOS	Any	Choose whether to pick Image/Video/Any type of assets.

The hostView parameter can be set to the view that hosts the image picker. Applicable in iOS only, intended to be used when open picker from a modal page.

• authorize() - request the required permissions.
• present() - show the albums to present the user the ability to select images. Returns an array of the selected images.

Contribute

We love PRs! Check out the contributing guidelines. If you want to contribute, but you are not sure where to start - look for issues labeled help wanted.

Get Help

Please, use github issues strictly for reporting bugs or requesting features. For general questions and support, check out Stack Overflow or ask our experts in NativeScript community Slack channel.