Mobile Kotlin media access

This is a Kotlin MultiPlatform library that provides media picking in common code (photo/video) and video player controls.

Table of Contents

• Features
• Requirements
• Installation
• Usage
• Samples
• Set Up Locally
• Contributing
• License

Features

• Capture camera photo
• Pick image from gallery
• Control video player
• Compose Multiplatform support

Requirements

• Gradle version 6.8+
• Android API 16+
• iOS version 11.0+

Installation

root build.gradle

allprojects {
    repositories {
        mavenCentral()
        maven { url = uri("https://jitpack.io") }
    }
}

project build.gradle

dependencies {
    commonMainApi("dev.icerock.moko:media:0.11.0")

    // Compose Multiplatform
    commonMainApi("dev.icerock.moko:media-compose:0.11.0")

    commonTestImplementation("dev.icerock.moko:media-test:0.11.0")
}

Usage

class ViewModel(val mediaController: MediaPickerController) : ViewModel() {
    fun onSelectPhotoPressed() {
        launch {
            try {
                val bitmap = mediaController.pickImage(MediaControllerSource.CAMERA)
                // captured photo in bitmap
            } catch (_: CanceledException) {
                // cancel capture
            } catch (error: Throwable) {
                // denied permission or file read error
            }
        }
    }
}

android:

val viewModel = getViewModel {
    val permissionsController = PermissionsController()
    val mediaController = MediaPickerController(permissionsController)
    ViewModel(mediaController)
}

viewModel.mediaController.bind(
    lifecycle,
    supportFragmentManager
) // permissioncController bind automatically

iOS:

let permissionsController = PermissionsController()
let mediaController = MediaPickerController(permissionsController: permissionsController, viewController: self)
let viewModel = ViewModel(mediaController: mediaController)

Compose Multiplatform

@Composable
fun Sample() {
    val factory = rememberMediaPickerControllerFactory()
    val picker = remember(factory) { factory.createMediaPickerController() }
    val coroutineScope = rememberCoroutineScope()

    BindMediaPickerEffect(picker)

    var image: ImageBitmap? by remember { mutableStateOf(null) }

    image?.let {
        Image(bitmap = it, contentDescription = null)
    }

    Button(
        onClick = {
            coroutineScope.launch {
                val result = picker.pickImage(MediaSource.GALLERY)
                image = result.toImageBitmap()
            }
        }
    ) {
        Text(text = "Click on me")
    }
}

or with moko-mvvm (with correct configuration change on android):

@Composable
fun Sample() {
    val factory = rememberMediaPickerControllerFactory()
    val viewModel: SampleViewModel = getViewModel(
        key = "sample",
        factory = viewModelFactory {
            val picker = factory.createMediaPickerController()
            SampleViewModel(picker)
        }
    )

    BindMediaPickerEffect(viewModel.mediaPickerController)

    val image: Bitmap? by viewModel.image.collectAsState()
    val imageBitmap: ImageBitmap? = remember(image) { image?.toImageBitmap() }

    imageBitmap?.let {
        Image(bitmap = it, contentDescription = null)
    }

    Button(onClick = viewModel::onButtonClick) {
        Text(text = "Click on me")
    }
}

class SampleViewModel(
    val mediaPickerController: MediaPickerController
) : ViewModel() {
    private val _image: MutableStateFlow<Bitmap?> = MutableStateFlow(null)
    val image: StateFlow<Bitmap?> get() = _image

    fun onButtonClick() {
        viewModelScope.launch {
            try {
                _image.value = mediaPickerController.pickImage(MediaSource.GALLERY)
            } catch (exc: Exception) {
                println("error $exc")
            }
        }
    }
}

Samples

More examples can be found in the sample directory.

Set Up Locally

• In media directory contains media library;
• In sample directory contains samples on android, ios & mpp-library connected to apps.

Contributing

All development (both new features and bug fixes) is performed in develop branch. This way master sources always contain sources of the most recently released version. Please send PRs with bug fixes to develop branch. Fixes to documentation in markdown files are an exception to this rule. They are updated directly in master.

The develop branch is pushed to master during release.

More detailed guide for contributers see in contributing guide.

License

Copyright 2019 IceRock MAG Inc

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.