This is the Android client for Delta Chat. It is available on F-Droid and the Google Play Store. The APK can also be downloaded from get.delta.chat.
For the core library and other common info, please refer to the Delta Chat Core Library.
For general contribution hints, please refer to CONTRIBUTING.md.
When checking out deltachat-android, make sure also to check out the subproject deltachat-core-rust:
- When using Git, you can do this initially by
$ git clone --recursive https://github.com/deltachat/deltachat-androidor later bygit submodule update --init --recursive. If you do this in your home directory, this results in the folder~/deltachat-androidwhich is just fine.
The repository contains Nix development environment
described in flake.nix file.
If you don't have Nix installed,
the easiest way is to use The Determinate Nix Installer
which installs Nix with Flakes feature enabled out of the box
and can be cleanly uninstalled with /nix/nix-installer uninstall once you don't need it anymore.
Once you have Nix with Flakes feature set up start the development environment shell:
nix develop
Nix development environment contains Rust with cross-compilation toolchains and Android SDK.
To build an APK run the following 2 steps.
Note that the first step may take some time to build for all architectures. You can optionally read
the first comment block in the ndk-make.sh script
for pointers on how to build for a specific architecture.
$ scripts/ndk-make.sh
$ ./gradlew assembleDebug
Resulting APK files can be found in
build/outputs/apk/gplay/debug/ and
build/outputs/apk/fat/debug/.
Another way to build APK is to use provided Dockerfile
with Docker or Podman.
Podman is a drop-in replacement for Docker that does not require root privileges.
If you don't have Docker or Podman setup yet, read how to setup Podman below. If you don't want to use Docker or Podman, read how to manually install the build environment.
First, build the image deltachat-android by running
podman build --build-arg UID=$(id -u) --build-arg GID=$(id -g) . -t deltachat-android
or
docker build --build-arg UID=$(id -u) --build-arg GID=$(id -g) . -t deltachat-android
Then, run the image:
podman run --userns=keep-id -it --name deltachat -v $(pwd):/home/app:z -w /home/app localhost/deltachat-android
or
docker run -it --name deltachat -v $(pwd):/home/app:z -w /home/app localhost/deltachat-android
You can leave the container with Ctrl+D or by typing exit and re-enter it with
docker start -ia deltachat or podman start -ia deltachat.
Within the container, install toolchains and build the native library:
deltachat@6012dcb974fe:/home/app$ scripts/install-toolchains.sh
deltachat@6012dcb974fe:/home/app$ scripts/ndk-make.sh
Then, build an APK:
deltachat@6012dcb974fe:/home/app$ ./gradlew assembleDebug
-
Executing
./gradlew assembleDebuginside the container fails withThe SDK directory '/home/user/Android/Sdk' does not exist.:The problem is that Android Studio (outside the container) automatically creates a file
local.propertieswith a content likesdk.dir=/home/username/Android/Sdk, so, Gradle-inside-the-container looks for the Sdk at/home/username/Android/Sdk, where it can't find it. You could:- either: remove the file or just the line starting with
sdk.dir - or: run
./gradlew assembleDebugfrom outside the container (however, there may be incompatibility issues if different versions are installed inside and outside the container)
- either: remove the file or just the line starting with
-
Running the image fails with
ERRO[0000] The storage 'driver' option must be set in /etc/containers/storage.conf, guarantee proper operation.:In /etc/containers/storage.conf, replace the line:
driver = ""with:driver = "overlay". You can also set thedriveroption to something else, you just need to set it to something. Read about possible options here.
These instructions were only tested on a Manjaro machine so far. If anything doesn't work, please open an issue.
First, Install Podman.
Then, if you want to run Podman without root, run:
sudo touch /etc/subgid
sudo touch /etc/subuid
sudo usermod --add-subuids 165536-231072 --add-subgids 165536-231072 yourusername
(replace yourusername with your username).
See https://wiki.archlinux.org/index.php/Podman#Rootless_Podman for more information.
To setup build environment manually:
- Either, in Android Studio, go to "Tools / SDK Manager / SDK Tools", enable "Show Package Details", select "CMake" and the desired NDK (install the same NDK version as the Dockerfile), hit "Apply".
- Or read Dockerfile and mimic what it does.
Then, in both cases, install Rust using rustup
and Rust toolchains for cross-compilation by executing scripts/install-toolchains.sh.
Then, configure ANDROID_NDK_ROOT environment variable to point to the Android NDK
installation directory e.g. by adding this to your .bashrc:
export ANDROID_NDK_ROOT=${HOME}/Android/Sdk/ndk/[version] # (or wherever your NDK is) Note that there is no `/` at the end!
export PATH=${PATH}:${ANDROID_NDK_ROOT}/toolchains/llvm/prebuilt/linux-x86_64/bin/:${ANDROID_NDK_ROOT}After that, call scripts/ndk-make.sh in the root directory to build core-rust.
Afterwards run the project in Android Studio. The project requires API 25.
With chance, that's it :) - if not, read on how to set up a proper development environment.
-
Some libs required by Android Studio may be missing on 64 bit Linux machines Source], so for Ubuntu execute
$ sudo apt-get install libc6:i386 libncurses5:i386 libstdc++6:i386 lib32z1 libbz2-1.0:i386and for Fedora execute$ sudo yum install zlib.i686 ncurses-libs.i686 bzip2-libs.i686. -
Download Android Studio from https://developer.android.com (android-studio-ide-...-linux.zip) and unpack the archive which contains a single folder called
android-studio; move this folder e.g. to~/android-studio. -
To launch Android Studio for the first time, open a terminal, navigate to
~/android-studio/bin, execute./studio.shand use all the standard values from the wizard. -
Android Studio now asks you if you want to open an existing project; choose
~/deltachat-androidas created in the "Build" chapter (Android Studio starts to build the project, however, there are some steps missing before this will succeed). -
If components are missing, click on the corresponding error message and install eg. required SDKs and the "Build-Tools" (you should also find the option at "Tools / Android / SDK Manager / SDK Platforms"). Now the build should succeed - but the app still misses the native part.
-
Download Android NDK from NDK Archives and extract the archive containing a single folder called something like
android-ndk-r23b-linux; move this folder e.g. to~/android-ndk. -
Export the folder path to your environment as
ANDROID_NDK_ROOTand add it toPATH. You can achieve this e.g. by adding this to your.bashrcexport ANDROID_NDK_ROOT=${HOME}/android-ndk export PATH=${PATH}:${ANDROID_NDK_ROOT}/toolchains/llvm/prebuilt/linux-x86_64/bin/:${ANDROID_NDK_ROOT}
-
You don't necessarily need a dedicated testing device. Backup your current account first, maybe there are some bugs in switching accounts.
-
You can run benchmarks on either an emulated device or a real device. You need at least Android 9. For better benchmark results, you should run the benchmark on a real device and make sure that the core is compiled in release mode.
-
Disable animations on your device, otherwise the test may fail: at "Developer options" set all of "Window animation scale", "Transition animation scale" and "Animator duration scale" to 0x
-
In Android Studio: "File" / "Sync project with gradle files"
-
In Android Studio: "Run" / "Edit configurations" / "+" / "Android Instrumented test": Either select a specific class or select "All in Module" / "OK" / Select your configuration in the toolbar / Click on the green "run" button in the toolbar to run the tests
When the benchmark is done, you will get a result like
MEASURED RESULTS (Benchmark) - Going thorough all 10 chats: 11635,11207,11363,11352,11279,11183,11137,11145,11032,11057.
You can paste 11635,11207,11363,11352,11279,11183,11137,11145,11032,11057
into a cell in a LibreOffice spreadsheet, do "Data" / "Text to columns",
choose , as a separator, hit "OK", and create a diagram.
For some tests, you need to provide the credentials to an actual email account. You have 2 ways to do this:
-
(Recommended): Put them into the file ~/.gradle/gradle.properties (create it if it doesn't exist):
[email protected] TEST_MAIL_PW=youpassword -
Or set them via environment variables.
Android metadata and changelogs are translated using Weblate.
The user interface classes are based on the Signal messenger.
Licensed GPLv3+, see the LICENSE file for details.
Copyright © 2022 Delta Chat contributors.
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