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kivy_venv/share/kivy-examples/android/takepicture/android.txt

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+title=TakePicture
+author=Mathieu Virbel
+orientation=portrait

kivy_venv/share/kivy-examples/android/takepicture/main.py

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+'''
+Take picture
+============
+
+.. author:: Mathieu Virbel <mat@kivy.org>
+
+Little example to demonstrate how to start an Intent, and get the result.
+When you use the Android.startActivityForResult(), the result will be
+dispatched into onActivityResult. You can catch the event with the
+android.activity API from python-for-android project.
+
+If you want to compile it, don't forget to add the CAMERA permission::
+
+    ./build.py --name 'TakePicture' --package org.test.takepicture \
+            --permission CAMERA --version 1 \
+            --private ~/code/kivy/examples/android/takepicture \
+            debug installd
+
+'''
+
+__version__ = '0.1'
+
+from kivy.app import App
+from os.path import exists
+from jnius import autoclass, cast
+from android import activity, mActivity
+from functools import partial
+from kivy.clock import Clock
+from kivy.uix.scatter import Scatter
+from kivy.properties import StringProperty
+
+from PIL import Image
+
+Intent = autoclass('android.content.Intent')
+MediaStore = autoclass('android.provider.MediaStore')
+Uri = autoclass('android.net.Uri')
+Environment = autoclass('android.os.Environment')
+
+
+class Picture(Scatter):
+    source = StringProperty(None)
+
+
+class TakePictureApp(App):
+    def build(self):
+        self.index = 0
+        activity.bind(on_activity_result=self.on_activity_result)
+
+    def get_filename(self):
+        while True:
+            self.index += 1
+            fn = (Environment.getExternalStorageDirectory().getPath() +
+                  '/takepicture{}.jpg'.format(self.index))
+            if not exists(fn):
+                return fn
+
+    def take_picture(self):
+        intent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
+        self.last_fn = self.get_filename()
+        self.uri = Uri.parse('file://' + self.last_fn)
+        self.uri = cast('android.os.Parcelable', self.uri)
+        intent.putExtra(MediaStore.EXTRA_OUTPUT, self.uri)
+        mActivity.startActivityForResult(intent, 0x123)
+
+    def on_activity_result(self, requestCode, resultCode, intent):
+        if requestCode == 0x123:
+            Clock.schedule_once(partial(self.add_picture, self.last_fn), 0)
+
+    def add_picture(self, fn, *args):
+        im = Image.open(fn)
+        width, height = im.size
+        im.thumbnail((width / 4, height / 4), Image.ANTIALIAS)
+        im.save(fn, quality=95)
+        self.root.add_widget(Picture(source=fn, center=self.root.center))
+
+    def on_pause(self):
+        return True
+
+
+TakePictureApp().run()

kivy_venv/share/kivy-examples/android/takepicture/takepicture.kv

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+#:kivy 1.0
+#:import win kivy.core.window
+
+Widget:
+    canvas:
+        Color:
+            rgb: .85, .87, .88
+        Rectangle:
+            size: self.size
+
+    Button:
+        text: 'Take a picture'
+        width: self.texture_size[0] + dp(40)
+        height: '48dp'
+        on_release: app.take_picture()
+
+<Picture>:
+    on_size: self.center = win.Window.center
+    size: image.size
+    size_hint: None, None
+
+    Image:
+        id: image
+        source: root.source
+
+        # create initial image to be 400 pixels width
+        size: 400, 400
+
+        # add shadow background
+        canvas.before:
+            Color:
+                rgba: 1, 1, 1, 1
+            BorderImage:
+                source: 'shadow32.png'
+                border: (36, 36, 36, 36)
+                size:(self.width + 72, self.height + 72)
+                pos: (-36, -36)
+
+
+