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Why navigator.geolocation.watchposition not work in setInterval()?

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0

I try to get location coordinate every 1 sec. But geolocation.watchposition not work in setInterval

here is my code:

componentDidMount()
 const intervalId = BackgroundTimer.setInterval(() => 
 navigator.geolocation.watchPosition((position) => 
 console.log(position.coords.latitude);
 var lat = parseFloat(position.coords.latitude);
 var lng = parseFloat(position.coords.longitude);

 console.log("lat :",lat);
 console.log("lng :",lng);
 );
 , 1000);

 BackgroundTimer.clearInterval(intervalId);

if I remove BackgroundTimer.setInterval method. It gives me coordinates. But I want everysecond

react-native

share|improve this question

asked Mar 8 at 12:15

hakanhakan

1709

add a comment | 

0

I try to get location coordinate every 1 sec. But geolocation.watchposition not work in setInterval

here is my code:

componentDidMount()
 const intervalId = BackgroundTimer.setInterval(() => 
 navigator.geolocation.watchPosition((position) => 
 console.log(position.coords.latitude);
 var lat = parseFloat(position.coords.latitude);
 var lng = parseFloat(position.coords.longitude);

 console.log("lat :",lat);
 console.log("lng :",lng);
 );
 , 1000);

 BackgroundTimer.clearInterval(intervalId);

if I remove BackgroundTimer.setInterval method. It gives me coordinates. But I want everysecond

react-native

share|improve this question

asked Mar 8 at 12:15

hakanhakan

1709

add a comment | 

I try to get location coordinate every 1 sec. But geolocation.watchposition not work in setInterval

here is my code:

componentDidMount()
 const intervalId = BackgroundTimer.setInterval(() => 
 navigator.geolocation.watchPosition((position) => 
 console.log(position.coords.latitude);
 var lat = parseFloat(position.coords.latitude);
 var lng = parseFloat(position.coords.longitude);

 console.log("lat :",lat);
 console.log("lng :",lng);
 );
 , 1000);

 BackgroundTimer.clearInterval(intervalId);

if I remove BackgroundTimer.setInterval method. It gives me coordinates. But I want everysecond

react-native

share|improve this question

asked Mar 8 at 12:15

hakanhakan

1709

componentDidMount()
 const intervalId = BackgroundTimer.setInterval(() => 
 navigator.geolocation.watchPosition((position) => 
 console.log(position.coords.latitude);
 var lat = parseFloat(position.coords.latitude);
 var lng = parseFloat(position.coords.longitude);

 console.log("lat :",lat);
 console.log("lng :",lng);
 );
 , 1000);

 BackgroundTimer.clearInterval(intervalId);

share|improve this question

asked Mar 8 at 12:15

hakanhakan

1709

share|improve this question

asked Mar 8 at 12:15

hakanhakan

1709

asked Mar 8 at 12:15

hakanhakan

1709

asked Mar 8 at 12:15

hakanhakan

1709

1 Answer
1

active

oldest

votes

0

The watchPosition method will automatically call the success callback as soon as the user's position has changed, so doing this won't work. If you really need to get every second (which you might not need as user's position rarely will change in 1 second and it consumes a lot of battery power) you use the setInterval using along with navigator.geolocation.getCurrentPosition method.

share|improve this answer

answered Mar 8 at 12:32

Vinícius CarraVinícius Carra

1

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Actually I want to get location when user change position. But I couldnt handle that
  
  – hakan
  Mar 8 at 12:35
  

  
  
  
  

add a comment | 

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0

The watchPosition method will automatically call the success callback as soon as the user's position has changed, so doing this won't work. If you really need to get every second (which you might not need as user's position rarely will change in 1 second and it consumes a lot of battery power) you use the setInterval using along with navigator.geolocation.getCurrentPosition method.

share|improve this answer

answered Mar 8 at 12:32

Vinícius CarraVinícius Carra

1

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Actually I want to get location when user change position. But I couldnt handle that
  
  – hakan
  Mar 8 at 12:35
  

  
  
  
  

add a comment | 

0

The watchPosition method will automatically call the success callback as soon as the user's position has changed, so doing this won't work. If you really need to get every second (which you might not need as user's position rarely will change in 1 second and it consumes a lot of battery power) you use the setInterval using along with navigator.geolocation.getCurrentPosition method.

share|improve this answer

answered Mar 8 at 12:32

Vinícius CarraVinícius Carra

1

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Actually I want to get location when user change position. But I couldnt handle that
  
  – hakan
  Mar 8 at 12:35
  

  
  
  
  

add a comment | 

The watchPosition method will automatically call the success callback as soon as the user's position has changed, so doing this won't work. If you really need to get every second (which you might not need as user's position rarely will change in 1 second and it consumes a lot of battery power) you use the setInterval using along with navigator.geolocation.getCurrentPosition method.

share|improve this answer

answered Mar 8 at 12:32

Vinícius CarraVinícius Carra

1

share|improve this answer

answered Mar 8 at 12:32

Vinícius CarraVinícius Carra

1

answered Mar 8 at 12:32

Vinícius CarraVinícius Carra

1

answered Mar 8 at 12:32

Vinícius CarraVinícius Carra

1