Run Kivy app don't show log information

[yingshaoxo]

The problem just like this: https://stackoverflow.com/questions/31852534/kivy-qpython-app-on-android-moto-g-phone-no-log-output

So I have no way but this to fix it:

import sys
sys.stdout=open('.run.log','a') 
sys.stderr=open('.run.log','a')

[riverfor]

Would you like to try out the newest version ?

You can get it fron google play or https://github.com/qpython-android/qpython/releases/tag/2.0.0-BETA-3

[yingshaoxo]

I'm very happy to use the new version of QPthon. It's beautiful!

But I found a few questions here:

1. I can't open .py file from file manager directly.

2. It seems like I'd rather see the python error information than last.log file, because sometimes I truly don't know where it gets wrong unless python told me.

On Aug 9, 2017 5:00 PM, "River" notifications@github.com wrote:

Would you like to try out the newest version ?

You can get it fron google play or https://github.com/qpython-android/qpython/releases/tag/2.0.0-BETA-3

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/qpython-android/qpython/issues/24#issuecomment-321196989, or mute the thread https://github.com/notifications/unsubscribe-auth/AQZPrSdKbvP-vBHNoFDG0z3U2DCbxtYZks5sWXU2gaJpZM4OuntK .

[riverfor]

Thanks for feedback, we will fix the issues you have mentioned as soon.

Besides that, The log's notifications icon should show when you run some python project, which displayed the error information when you clicking it. Didn't it show on your device ?

[yingshaoxo]

First, 'GOOD' don't work for me.

Then, I put a 9/0 to a kivy function, It did quit, but no errors I can see form log window.

On Aug 9, 2017 5:38 PM, "River" notifications@github.com wrote:

Thanks for feedback, we will fix the issues you have mentioned as soon.

Besides that, The log's notifications icon should show when you run some python project, which displayed the error information when you clicking it. Didn't it show on your device ?

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/qpython-android/qpython/issues/24#issuecomment-321206150, or mute the thread https://github.com/notifications/unsubscribe-auth/AQZPrR7_eZ7tyT89Cr7R27XHtlVWIjGvks5sWX4egaJpZM4OuntK .

[riverfor]

Can you post your related script here ?

[yingshaoxo]

https://github.com/yingshaoxo/SongRecorder

On Aug 10, 2017 7:56 AM, "River" notifications@github.com wrote:

Can you post your related script here ?

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/qpython-android/qpython/issues/24#issuecomment-321412837, or mute the thread https://github.com/notifications/unsubscribe-auth/AQZPrcibzgFlrmuHf8aP6o0OytA213dcks5sWkcegaJpZM4OuntK .

[riverfor]

I have test it

It's ok to remove the following code in newest version qpython and I could see the log

try:
    import sys 
    reload(sys) 
    sys.setdefaultencoding("utf-8")

    # Fix QPython logging problem
    with open('.run.log', 'w') as f:
        f.write('')
    sys.stdout = open('.run.log', 'a') 
    sys.stderr = open('.run.log', 'a')
except:
    pass

I could not find the 9/0,

Did you use the kivy logger to print the message ?

from kivy.logger import Logger

Logger.info('title: This is a info message.')

[yingshaoxo]

I prefer use print() instead of kivy-logger.

Here is the wrong codes:

#qpy:kivy
# -*- coding: UTF-8 -*-

try:
    import sys 
    reload(sys) 
    sys.setdefaultencoding("utf-8")
except:
    pass

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen

from kivy.uix.popup import Popup
from kivy.core.clipboard import Clipboard
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.textinput import TextInput
from kivy.uix.button import Button

from kivy.clock import Clock

import os
import json

from jnius import autoclass, cast
from android import activity

# init all
Environment = autoclass('android.os.Environment')
storage_dir = Environment.getExternalStorageDirectory().getAbsolutePath() 

# For file choice and showing
def select_file(start_dir='/Download'):
    app = App.get_running_app()
    app.target_path = ''

    PythonActivity = autoclass('org.renpy.android.PythonActivity')
    Uri = autoclass('android.net.Uri')
    selectedUri = Uri.parse(storage_dir + start_dir)
    currentActivity = cast('android.app.Activity', PythonActivity.mActivity)

    def on_activity_result(requestCode, resultCode, data):
        print(requestCode)
        print(resultCode)
        #print(data)
        if requestCode == 1:
            if resultCode == -1:
               print('Got target_path!')
               one_uri = data.getData()
               app.target_path = one_uri.getPath()

               if app.target_path[:10] != '/external/':
                   print(app.target_path)
                   App.get_running_app().save_setting({'mp3_path': app.target_path})
                   return
               else:
                   filePathColumn = ["_data"]
                   cursor = currentActivity.getContentResolver().query(one_uri, filePathColumn, None, None, None)
                   cursor.moveToFirst()
                   columnIndex = cursor.getColumnIndex(filePathColumn[0])
                   app.target_path = cursor.getString(columnIndex)
                   cursor.close()
                   print(app.target_path)
                   App.get_running_app().save_setting({'mp3_path': app.target_path})
                   return
        print('Fail to get target_path')
        return

    activity.bind(on_activity_result=on_activity_result)
    Intent = autoclass('android.content.Intent')
    intent = Intent(Intent.ACTION_GET_CONTENT)
    intent.addCategory(Intent.CATEGORY_OPENABLE)
    intent.setDataAndType(selectedUri, "resource/folder") 
    currentActivity.startActivityForResult(intent, 1)

# For file sharing
def share_file(path):
    PythonActivity = autoclass('org.renpy.android.PythonActivity')
    Intent = autoclass('android.content.Intent')
    String = autoclass('java.lang.String')
    Uri = autoclass('android.net.Uri')
    File = autoclass('java.io.File')

    shareIntent = Intent(Intent.ACTION_SEND)
    shareIntent.setType('"*/*"')
    imageFile = File(path)
    uri = Uri.fromFile(imageFile)
    parcelable = cast('android.os.Parcelable', uri)
    shareIntent.putExtra(Intent.EXTRA_STREAM, parcelable)

    currentActivity = cast('android.app.Activity', PythonActivity.mActivity)
    currentActivity.startActivity(shareIntent)

# For audio play and record
MediaPlayer = autoclass('android.media.MediaPlayer')
MediaRecorder = autoclass('android.media.MediaRecorder')
AudioSource = autoclass('android.media.MediaRecorder$AudioSource')
OutputFormat = autoclass('android.media.MediaRecorder$OutputFormat')
AudioEncoder = autoclass('android.media.MediaRecorder$AudioEncoder')

recorder = MediaRecorder()
player = MediaPlayer()

aac_path = (storage_dir + '/kivy_recording.aac')

def init_recorder():
    recorder.setAudioSource(AudioSource.MIC)
    recorder.setOutputFormat(OutputFormat.MPEG_4)
    recorder.setAudioEncoder(AudioEncoder.AAC)
    recorder.setAudioEncodingBitRate(16 * 44100)
    recorder.setAudioSamplingRate(44100)
    recorder.setOutputFile(aac_path)
    recorder.prepare()

def reset_player():
    if (player.isPlaying()):
        player.stop()
    player.reset()

def restart_player(file_path):
    reset_player()
    try:
        player.setDataSource(file_path)
        player.prepare()
        player.start()
    except:
        player.reset()

Builder.load_string('''
#:import C kivy.utils.get_color_from_hex

<Widget>:
    font_name:'data/droid.ttf'

<Button>:
    background_normal: 'data/button_normal.png'
    background_down: 'data/button_down.png'
    font_size: 24
    halign: 'center'
    markup: True

<LRCLabel@Label>:
    color: C('#101010')
    font_size: 36
    text_size: (self.width, None)
    halign: 'center'
    valign: 'middle'
    padding: (0, 0)
    size_hint: (1, None)
    height: self.texture_size[1]
    markup: True

<ScreenManager>:
    canvas.before: 
        Color: 
            rgba: 1, 1, 1, 1 
        Rectangle: 
            pos: self.pos 
            size: self.size

    SettingScreen
    RecordingScreen

<SettingScreen>:
    name: 'setting'

    BoxLayout:
        orientation: "vertical"
        padding: 15
        spacing: 15

        BoxLayout:
            orientation: "vertical"
            spacing: 15

            Button:
                background_color: C('#FFB510')
                text: '[size=40]Select MP3[/size]'
                on_release: root.select_mp3_button()

            Button:
                background_color: C('#BC92F4')
                text: '[size=40]Write LRC[/size]'
                on_release: root.write_lrc_button()

        Button:
            background_color: C('#1abc9c')
            text: '[size=60]Start[/size]'
            on_release: root.start_button()

<RecordingScreen>:
    name: 'recording'

    BoxLayout:
        orientation: "vertical"
        padding: 15
        spacing: 15

        BoxLayout:
            orientation: "vertical"
            spacing: 15
            size_hint: (1, 0.5)

            Button:
                id: record_button
                background_color: C('#e74c3c')
                text: '[size=60]Record[/size]'
                on_release: root.manager.record_button()
            Button:
                id: playback_button
                background_color: C('#3498db')
                text: '[size=60]Playback[/size]'
                on_release: root.manager.playback_button()

        ScrollView:
            size_hint: (1, 0.5)
            LRCLabel:
                id: lrc_show
''')

class SettingScreen(Screen):

    def select_mp3_button(self):
        app = self.manager.app
        setting = app.read_setting()

        mp3_path = setting.get('mp3_path')
        if mp3_path != None:
            start_dir = os.path.dirname(mp3_path).replace(storage_dir, '')
            select_file(start_dir)
        else:
            select_file()

    def popup_callback(self, popup_instance):
        # print(popup_instance.content.children)
        lrc = popup_instance.content.children[1].text
        lrc = lrc.strip('\n ')
        self.manager.app.save_setting({u'lrc': lrc})

    def write_lrc_button(self):       
        app = self.manager.app
        setting = app.read_setting()

        lrc  = setting.get('lrc')

        layout = BoxLayout(orientation='vertical', spacing=10)
        popup = Popup(title="What's your LRC?", title_align='center', content=layout, size_hint=(0.8, 0.8), backgroud_color=[0, 0, 0, 0.5])

        def get_purposed_text():
            clipboard_text = Clipboard.paste()
            if lrc == None:
                return clipboard_text
            elif lrc == '':
                return clipboard_text
            else:
                return lrc

        layout.add_widget(TextInput(text=get_purposed_text(), font_size=self.width*0.05, size_hint=(1, 0.9)), index=1)

        saving_button = Button(text='Save', color=[0, 0, 0, 1], size_hint=(1, 0.1))
        saving_button.bind(on_release=popup.dismiss)
        layout.add_widget(saving_button, index=0)

        popup.bind(on_dismiss=self.popup_callback) 
        popup.open()

    def start_button(self):
        app = self.manager.app

        mp3_path = app.read_setting().get('mp3_path')
        if mp3_path == None: # or mp3_path[-4:0] != '.mp3':
            self.select_mp3_button()
            return
        else:
            self.manager.mp3_path = mp3_path

        lrc = app.read_setting().get('lrc')
        if lrc == None:
            self.write_lrc_button()
            return
        else:
            lrc = lrc.strip('\n ')
            self.manager.get_screen('recording').ids.lrc_show.text = '\n\n' + lrc + '\n\n'

        self.manager.current = 'recording'

class RecordingScreen(Screen):
    pass

class ScreenManager(ScreenManager):

    def __init__(self, **kwargs):    
        self.app = App.get_running_app()
        self.is_recording = False
        self.is_playbacking = False
        super(ScreenManager, self).__init__(**kwargs)

    def begin_recording(self):
        init_recorder()
        restart_player(self.mp3_path)
        recorder.start()
        self.is_recording = True
        self.get_screen('recording').ids.record_button.text = '[size=60]Tap to end[/size]'

    def end_recording(self):
        reset_player()
        recorder.stop()
        recorder.reset()
        self.is_recording = False
        self.get_screen('recording').ids.record_button.text = '[size=60]Record[/size]'

    def begin_playing(self):
        def whether_end(dt):
            if player.isPlaying() == False:
                self.stop_playing()
        restart_player(aac_path)
        self.whether_end_event = Clock.schedule_interval(whether_end, 3)
        self.is_playbacking = True
        self.get_screen('recording').ids.playback_button.text = '[size=60]Tap to stop[/size]'

    def stop_playing(self):
        self.whether_end_event.cancel()
        reset_player()
        self.is_playbacking = False
        self.get_screen('recording').ids.playback_button.text = '[size=60]Playback[/size]'

    def record_button(self):
        if self.is_playbacking:
            self.stop_playing()

        if self.is_recording:
            self.end_recording()
        else:
            self.begin_recording()

    def playback_button(self):
        if self.is_recording:
            self.end_recording()

        if self.is_playbacking:
            self.stop_playing()
        else:
            self.begin_playing()

class SongRecorderApp(App):

    def __init__(self, **kwargs):
        9/0
        self.app_path =os.path.dirname(os.path.abspath('.'))
        self.setting_path = os.path.join(self.app_path, 'setting.json')
        if os.path.exists(self.setting_path) == False:
            self.write_setting(json.dumps({'first_launch': False}))
        super(SongRecorderApp, self).__init__(**kwargs)

    def read_setting(self):
        with open(self.setting_path, 'r') as f:
            text = f.read()
        text = text.strip(' \n')
        return json.loads(text)

    def save_setting(self, new_dict):
        old_dict = self.read_setting()
        old_dict.update(new_dict)
        text = json.dumps(old_dict)
        with open(self.setting_path, 'w') as f:
            f.write(text)

    def write_setting(self, text):
        with open(self.setting_path, 'w') as f:
            f.write(text)

    def build(self):
        self.bind(on_start=self.post_build_init)
        return ScreenManager()

    def on_start(self, **kwargs):
        setting = self.read_setting()

        mp3_path = setting.get('mp3_path')
        if mp3_path == None: # or mp3_path[-4:0] != '.mp3':
            return

        lrc = setting.get('lrc')
        if lrc == None:
            return

        self.root.get_screen('setting').start_button()

    def post_build_init(self, ev):
        from kivy.base import EventLoop
        EventLoop.window.bind(on_keyboard=self.hook_keyboard) 

    def hook_keyboard(self, window, key, *largs):
        print(key)
        if key == 27: # -- back key
            if(self.root.current=='setting'): 
                exit()
                #App.get_running_app().stop()
            self.root.current='setting' 

            return True
        if key == 319 or key == 1073741942: # -- munu key
            share_file(aac_path)
            return True

SongRecorderApp().run()

[riverfor]

If you prefer print you should use the following code which redirect output to the last.log file.

with open('.run.log', 'w') as f:
        f.write('')
    sys.stdout = open('last.log', 'a') 
    sys.stderr = open('last.log', 'a')

[yingshaoxo]

Yes, I know that.

But you really think kivy is common with normal Python program? Kivy won't show terminal when you run it, so it's OK to put log information with print().

On Aug 16, 2017 3:53 PM, "River" notifications@github.com wrote:

If you prefer print you should use the following code which redirect output to the last.log file.

with open('.run.log', 'w') as f: f.write('') sys.stdout = open('last.log', 'a') sys.stderr = open('last.log', 'a')

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/qpython-android/qpython/issues/24#issuecomment-322694330, or mute the thread https://github.com/notifications/unsubscribe-auth/AQZPrVOQUzb1nYYAwrMrbevbKw2o-ztrks5sYp_zgaJpZM4OuntK .

[yingshaoxo]

And as I said, if you use kivy-log instead of official information, you'll get lost when error happens.

[riverfor]

I see, we will consider to improve that in the future.