Correct Android compatibility of example app (#310)

Author: freakboy3742

.github/workflows/ci.yml

@@ -57,11 +57,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
-        include:
-          - experimental: false
-          # - python-version: "3.14"
-          #   experimental: true
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
     - name: Checkout

.gitignore

@@ -114,3 +114,6 @@ runtime/
 
 # ruff chache
 .ruff_cache
+
+# Briefcase
+.briefcase

changes/309.bugfix.rst

@@ -0,0 +1 @@
+Support for Python 3.14 was added.

changes/309.feature.rst

@@ -0,0 +1 @@
+Support for Python 3.9 was dropped.

changes/309.removal.rst

@@ -49,3 +49,13 @@ requires = [
 requires = [
     "toga-android",
 ]
+
+base_theme = "Theme.MaterialComponents.Light.DarkActionBar"
+
+build_gradle_dependencies = [
+    "com.google.android.material:material:1.12.0",
+]
+
+# Web deployment (not currently supported)
+[tool.briefcase.app.chart.web]
+supported = false

examples/pyproject.toml

@@ -10,7 +10,7 @@ dynamic = ["version"]
 name = "toga-chart"
 description = "A Toga matplotlib backend."
 readme = "README.rst"
-requires-python = ">= 3.9"
+requires-python = ">= 3.10"
 license.text = "New BSD"
 authors = [
     {name="Russell Keith-Magee", email="[email protected]"},
@@ -28,17 +28,17 @@ classifiers = [
     "License :: OSI Approved :: BSD License",
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Programming Language :: Python :: 3 :: Only",
     "Topic :: Software Development",
     "Topic :: Software Development :: User Interfaces",
 ]
 dependencies = [
-    "matplotlib >= 3.9.0",
+    "matplotlib >= 3.8.0",
     "toga-core >= 0.5.0, < 0.6.0",
 ]
 

pyproject.toml

@@ -1,5 +1,5 @@
 [tox]
-envlist = towncrier-check,docs{,-lint,-all},package,py{39,310,311,312,313}
+envlist = towncrier-check,docs{,-lint,-all},package,py{310,311,312,313,314}
 skip_missing_interpreters = true
 
 [testenv]