Till I added the below lines for Urlrequest, my kivy app worked on my android and opened instantly with the right output . Now after adding the urlrequest code, I have a never ending black screen on my android. Why is this happening? My laptop though shows the right output. Please help me with a fix. Still waiting for a solution!
from kivy.network.urlrequest import UrlRequest
def where():
f = os.path.dirname(file)
return os.path.join(f, 'cacert.pem')
req = UrlRequest(scan_url, req_body=jdata, ca_file=where(), verify= True)
req.wait()
resp = req.result
indicator_values = resp["data"][0]['d']
```
class TA_Handler(BoxLayout):
screener = ""
exchange = ""
symbol = ""
interval = "1d"
#Get analysis
def on_getCloudEvents_success(self,request,result):
print("on_getCloudEvents_success called:")
print(" result="+str(result))
self.resp = result
self.SYNC_REQUEST_STAT="Success" # to end the synchronous wait
def on_getCloudEvents_failure(self,request,result):
print("on_getCloudEvents_failure called:")
print(" request was sent to "+str(request.url))
print(" request body="+str(request.req_body))
print(" request headers="+str(request.req_headers))
print(" result="+str(request.result))
self.SYNC_REQUEST_STAT="Failure" # to end the synchronous wait
def on_getCloudEvents_error(self,request,result):
print("on_getCloudEvents_error called:")
print(" request was sent to "+str(request.url))
print(" request body="+str(request.req_body))
print(" request headers="+str(request.req_headers))
print(" result="+str(request.result))
self.SYNC_REQUEST_STAT="Error" # to end the synchronous wait
def get_analysis(self):
super(TA_Handler,self).__init__()
"""Get analysis from TradingView and compute it.
Returns:
Analysis: Contains information about the analysis.
"""
if self.screener == "" or type(self.screener) != str:
raise Exception("Error: screener is empty or not valid")
elif self.exchange == "" or type(self.exchange) != str:
raise Exception("Error: exchange is empty or not valid")
elif self.symbol == "" or type(self.symbol) != str:
raise Exception("Error: symbol is empty or not valid")
elif self.interval == "" or type(self.symbol) != str:
warnings.warn("Warning: interval is empty or not valid, defaulting to 1 day.")
exch_smbl = self.exchange.upper() + ":" + self.symbol.upper()
data = TradingView.data(exch_smbl, self.interval)
scan_url = TradingView.scan_url + self.screener.lower() + "/scan"
self.resp = None
jdata = json.dumps(data).encode('utf-8')
request = UrlRequest(scan_url, req_body=jdata,ca_file=where(),verify=True,\
on_success=self.on_getCloudEvents_success,
on_failure=self.on_getCloudEvents_failure,
on_error=self.on_getCloudEvents_error)
#
resp=request.result
indicator_values = resp["data"][0]['d']
oscillators_counter, ma_counter = {"BUY": 0, "SELL": 0, "NEUTRAL": 0}, {"BUY": 0, "SELL": 0, "NEUTRAL": 0}
computed_oscillators, computed_ma = {}, {}
# RECOMMENDATIONS
recommend_oscillators = Compute.Recommend(indicator_values[0])
recommend_summary = Compute.Recommend(indicator_values[1])
recommend_moving_averages = Compute.Recommend(indicator_values[2])
# OSCILLATORS
# RSI (14)
# some code
analysis.summary = {"RECOMMENDATION": recommend_summary, "BUY": oscillators_counter["BUY"] + ma_counter["BUY"], "SELL": oscillators_counter["SELL"] + ma_counter["SELL"], "NEUTRAL": oscillators_counter["NEUTRAL"] + ma_counter["NEUTRAL"]}
return analysis
class MainApp(App):
def this_job(self):
handler = TA_Handler()
handler.symbol = "BTCUSDT"
handler.exchange = "BITTREX"
handler.screener = "crypto"
osc=[]
ma=[]
sum1=[]
for h in ['15m','1h','4h','1d','1W']:
handler.interval = h # 1 day
analysis = handler.get_analysis()
osc1_rec = (analysis.oscillators).get('RECOMMENDATION')
sum_rec = (analysis.summary).get('RECOMMENDATION')
ma_rec = (analysis.moving_averages).get('RECOMMENDATION')
osc.append(osc1_rec)
ma.append(ma_rec)
sum1.append(sum_rec)
return osc,ma, sum1
def build(self):
# osc=[]
# ma=[]
# sum1=[]
handler = TA_Handler()
handler.symbol = "BTCUSDT"
handler.exchange = "BITTREX"
handler.screener = "crypto"
osc=[]
ma=[]
sum1=[]
for h in ['15m','1h','4h','1d','1W']:
handler.interval = h # 1 day
analysis = handler.get_analysis()
osc1_rec = (analysis.oscillators).get('RECOMMENDATION')
sum_rec = (analysis.summary).get('RECOMMENDATION')
ma_rec = (analysis.moving_averages).get('RECOMMENDATION')
osc.append(osc1_rec)
ma.append(ma_rec)
sum1.append(sum_rec)
x=osc[0]
# osc,ma,sum1 = this_job()
label = Label(text='Hello from Kivy' + x,
size_hint=(.5, .5),
pos_hint={'center_x': .5, 'center_y': .5})
return label
if __name__ == '__main__':
app = MainApp()
app.run()
I also copied cacert.pem to my project folder.
Just these lines make the screen go black. And the output with these same lines is perfect on my laptop but not just on the android.
Also, the app doesn't crash like with an error, the screen just becomes all black!!
