colab with python, kivy, buildozer. To build apps easily online, no need to download SDK, NDK, ... 😩

kivy_buildozer_colab.ipynb

{
  "nbformat": 4,
  "nbformat_minor": 0,
  "metadata": {
    "colab": {
      "name": "kivy-buildozer-colab.ipynb",
      "provenance": [],
      "collapsed_sections": []
    },
    "kernelspec": {
      "name": "python3",
      "display_name": "Python 3"
    }
  },
  "cells": [
    {
      "cell_type": "markdown",
      "metadata": {
        "colab_type": "text"
      },
      "source": [
        "# PYTHON KIVY BUILDOZER with noVNC\n",
        "\n",
        "* lang : [python3](https://www.python.org/ \"general-purpose programming language\")\n",
        "\n",
        "* gui : [kivy](https://kivy.org/#home \"cross-platform Python framework | multi-touch UI\")\n",
        "\n",
        "* builder : [buildozer](https://buildozer.readthedocs.io/en/latest/ \"to package mobiles application easily\")"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "colab_type": "text"
      },
      "source": [
        "## Coding"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "colab_type": "text"
      },
      "source": [
        "### Persistence mode\n",
        "using google drive"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab_type": "code",
        "colab": {}
      },
      "source": [
        "from google.colab import drive\n",
        "drive.mount('/content/drive')"
      ],
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab_type": "code",
        "colab": {}
      },
      "source": [
        "# ! mkdir -p '/content/drive/My Drive/Colab Notebooks/buildozer'\n",
        "# ! mkdir -p '/content/drive/My Drive/Colab Notebooks/root-buildozer'\n",
        "# ! mkdir -p '/root/.buildozer' '/content/buildozer'\n",
        "#\n",
        "# ! mount --bind '/content/drive/My Drive/Colab Notebooks/buildozer' '/content/buildozer/.buildozer'\n",
        "# ! mount --bind '/content/drive/My Drive/Colab Notebooks/root-buildozer' '/root/.buildozer'\n",
        "# ! rm /content/buildozer/.buildozer/android/platform/build-armeabi-v7a/dists/myapp__armeabi-v7a/build/outputs/apk/debug/*.apk\n",
        "#\n",
        "## raises some permission errors :("
      ],
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab_type": "code",
        "colab": {}
      },
      "source": [
        "# extract (approximately 2m30s)\n",
        "! tar -xzvf '/content/drive/My Drive/Colab Notebooks/buildozer.tar.gz' -C /\n",
        "! tar -xzvf '/content/drive/My Drive/Colab Notebooks/root-buildozer.tar.gz' -C /\n",
        "\n",
        "# just clearing old apk.\n",
        "! rm /content/buildozer/.buildozer/android/platform/build-armeabi-v7a/dists/myapp__armeabi-v7a/build/outputs/apk/debug/*.apk"
      ],
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab_type": "code",
        "colab": {}
      },
      "source": [
        "# archive\n",
        "! mkdir -p '/content/drive/My Drive/Colab Notebooks'\n",
        "! tar -czvf '/content/drive/My Drive/Colab Notebooks/buildozer.tar.gz' /content/buildozer/.buildozer\n",
        "! tar -czvf '/content/drive/My Drive/Colab Notebooks/root-buildozer.tar.gz' /root/.buildozer"
      ],
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "colab_type": "text"
      },
      "source": [
        "### Uploding or writing the code"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab_type": "code",
        "colab": {}
      },
      "source": [
        "! mkdir -p /content/buildozer\n",
        "%cd /content/buildozer\n",
        "\n",
        "from google.colab import files\n",
        "files.upload()\n",
        "\n",
        "# (OR) #"
      ],
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab_type": "code",
        "colab": {}
      },
      "source": [
        "%%writefile main.py\n",
        "\n",
        "__version__ = '0.0.0'\n",
        "\n",
        "from kivy.app import App\n",
        "from kivy.uix.button import Button\n",
        "\n",
        "class TestApp(App):\n",
        "    def build(self):\n",
        "        return Button(text='Hello World')\n",
        "\n",
        "TestApp().run()"
      ],
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "colab_type": "text"
      },
      "source": [
        "## Building app with BUILDOZER\n"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "colab_type": "text"
      },
      "source": [
        "### Installing Dependencies"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab_type": "code",
        "colab": {}
      },
      "source": [
        "# https://buildozer.readthedocs.io/en/latest/installation.html#android-on-ubuntu-20-04-64bit\n",
        "! apt install -qq -y git zip unzip openjdk-8-jdk python3-pip autoconf libtool pkg-config zlib1g-dev libncurses5-dev libncursesw5-dev libtinfo5 cmake libffi-dev libssl-dev\n",
        "! pip3 install --upgrade Cython==0.29.19 virtualenv\n",
        "\n",
        "! apt install python-kivy lld\n",
        "! pip3 install kivy buildozer\n",
        "\n",
        "import os\n",
        "os.environ['PATH'] += ':~/.local/bin/'"
      ],
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "colab_type": "text"
      },
      "source": [
        "### Building"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab_type": "code",
        "colab": {}
      },
      "source": [
        "! yes | buildozer init"
      ],
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab_type": "code",
        "colab": {}
      },
      "source": [
        "! yes | buildozer -v android debug"
      ],
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "colab_type": "text"
      },
      "source": [
        "## VNC"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "colab_type": "text"
      },
      "source": [
        "### Installing Dependencies"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab_type": "code",
        "colab": {}
      },
      "source": [
        "! sudo apt update -qq\n",
        "! apt-get install -qq -y xvfb x11vnc # Install X Virtual Frame Buffer\n",
        "! apt-get install -qq -y xfce4 xfce4-goodies\n",
        "import os\n",
        "os.system('Xvfb :1 -screen 0 1600x1200x16  &')    # create virtual display with size 1600x1200 and 16 bit color. Color can be changed to 24 or 8\n",
        "os.environ['DISPLAY']=':1.0'    # tell X clients to use our virtual DISPLAY :1.0\n",
        "os.system('startxfce4 > /dev/null &')    # start xfce\n",
        "! read -p 'Enter Passwd > ' -s PASSWD && mkdir -p /content/.vnc && x11vnc -storepasswd $PASSWD /content/.vnc/passwd\n",
        "\n",
        "# noVNC\n",
        "! apt-get install -qq -y git netcat    \n",
        "! git clone --depth 1 https://github.com/novnc/noVNC.git /content/noVNC\n",
        "! git clone --depth 1 https://github.com/novnc/websockify /content/noVNC/utils/websockify\n",
        "from google.colab import output\n",
        "def port_out(port):\n",
        "    return output.serve_kernel_port_as_window(port)"
      ],
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "colab_type": "text"
      },
      "source": [
        "### For testing before build"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab_type": "code",
        "colab": {}
      },
      "source": [
        "os.system('x11vnc -display $DISPLAY -rfbauth /content/.vnc/passwd -rfbport 5900 -forever &')"
      ],
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab_type": "code",
        "colab": {}
      },
      "source": [
        "os.system('/content/noVNC/utils/launch.sh --vnc localhost:5900 --listen 5980 &')"
      ],
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab_type": "code",
        "colab": {}
      },
      "source": [
        "! pip install pyngrok\n",
        "from pyngrok import ngrok\n",
        "public_url = ngrok.connect(5980)\n",
        "print(public_url)"
      ],
      "execution_count": null,
      "outputs": []
    }
  ]
}

Try Now 😉

For PERMISSION ERROR
just do chmod 777 that/file

No need for now 👍