@nativescript/imagepicker apple android

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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.

ns plugin add @nativescript/imagepicker

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/imagepicker";

Javascript

var imagepicker = require("@nativescript/imagepicker");

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

To be sure to have permissions add the following lines in AndroidManifest.xml

<manifest ... >
  <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

  <application android:requestLegacyExternalStorage="true" ... >
    ...
  </application>
</manifest>

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:
OptionPlatformDefaultDescription
modebothmultipleThe mode if the imagepicker. Possible values are single for single selection and multiple for multiple selection.
minimumNumberOfSelectioniOS0The minumum number of selected assets.
maximumNumberOfSelectioniOS0The maximum number of selected assets.
showsNumberOfSelectedAssetsiOSTrueDisplay the number of selected assets.
promptiOSundefinedDisplay prompt text when selecting assets.
numberOfColumnsInPortraitiOS4Set the number of columns in Portrait orientation.
numberOfColumnsInLandscapeiOS7Set the number of columns in Landscape orientation.
mediaTypebothAnyChoose whether to pick Image/Video/Any type of assets.
showAdvancedAndroidfalseShow internal and removable storage options on Android (WARNING: not supported officially).

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.

License

Apache License Version 2.0