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Add permission request to plyer GPS example #529

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merged 5 commits into from
Dec 29, 2019
Merged

Add permission request to plyer GPS example #529

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9f41f87
Update GPS example to include runtime persmission request
Zen-CODE Dec 27, 2019
791229b
Fix syntax error in except clause
Zen-CODE Dec 28, 2019
00955c7
Updated requirements to include Android, Python 3
Zen-CODE Dec 28, 2019
97d63c7
Removed useless error check, added handling of permission request
Zen-CODE Dec 28, 2019
5c2f1b8
Added explanations, example of calling without callback
Zen-CODE Dec 28, 2019
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2 changes: 1 addition & 1 deletion examples/gps/buildozer.spec
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Original file line number Diff line number Diff line change
Expand Up @@ -32,7 +32,7 @@ source.include_exts = py,png,jpg,kv,atlas
version = 1.0

# (list) Application requirements
requirements = plyer,kivy
requirements = python3, kivy, plyer, android

# (str) Presplash of the application
#presplash.filename = %(source.dir)s/data/presplash.png
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34 changes: 34 additions & 0 deletions examples/gps/main.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
from kivy.app import App
from kivy.properties import StringProperty
from kivy.clock import Clock, mainthread
from kivy.utils import platform

kv = '''
BoxLayout:
Expand Down Expand Up @@ -32,6 +33,35 @@ class GpsTest(App):
gps_location = StringProperty()
gps_status = StringProperty('Click Start to get GPS location updates')


def request_android_permissions(self):
"""
Since API 23, Android requires permission to be requested at runtime.
This function requests permission and handles the response via a
callback.

The request will produce a popup if permissions have not already been
been granted, otherwise it will do nothing.
"""
from android.permissions import request_permissions, Permission

def callback(permissions, results):
"""
Defines the callback to be fired when runtime permission
has been granted or denied. This is not strictly required,
but added for the sake of completeness.
"""
if all([res for res in results]):
print("callback. All permissions granted.")
else:
print("callback. Some permissions refused.")

request_permissions([Permission.ACCESS_COARSE_LOCATION,
Permission.ACCESS_FINE_LOCATION], callback)
# # To request permissions without a callback, do:
# request_permissions([Permission.ACCESS_COARSE_LOCATION,
# Permission.ACCESS_FINE_LOCATION])

def build(self):
try:
gps.configure(on_location=self.on_location,
Expand All @@ -41,6 +71,10 @@ def build(self):
traceback.print_exc()
self.gps_status = 'GPS is not implemented for your platform'

if platform == "android":
print("gps.py: Android detected. Requesting permissions")
self.request_android_permissions()

return Builder.load_string(kv)

def start(self, minTime, minDistance):
Expand Down