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Attempts at implementing background tasks in React Native iOS
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// | |
// BackgroundTask.h | |
// tomtrack | |
// | |
// Created by Liam Edwards-Playne on 13/02/2016. | |
// | |
#import "RCTBridgeModule.h" | |
@interface BackgroundTask : NSObject <RCTBridgeModule> | |
@end |
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// | |
// BackgroundTask.m | |
// tomtrack | |
// | |
// Created by Liam Edwards-Playne on 13/02/2016. | |
// | |
#import <Foundation/Foundation.h> | |
#import "BackgroundTask.h" | |
#import "RCTUtils.h" | |
/* | |
Sample: | |
BackgroundTask.beginBackgroundTask("gpsTracking", () => {}) | |
*/ | |
@implementation BackgroundTask | |
RCT_EXPORT_MODULE(); | |
#pragma mark - Public API | |
RCT_EXPORT_METHOD(beginBackgroundTask:(NSString *)taskName jsCallback:(RCTResponseSenderBlock)jsCallback) | |
{ | |
UIApplication *application = RCTSharedApplication(); | |
__block UIBackgroundTaskIdentifier bgTask = [application beginBackgroundTaskWithName:taskName expirationHandler:^{ | |
// Clean up any unfinished task business by marking where you | |
// stopped or ending the task outright. | |
[application endBackgroundTask:bgTask]; | |
bgTask = UIBackgroundTaskInvalid; | |
}]; | |
// Start the long-running task and return immediately. | |
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ | |
printf("Running in the background\n"); | |
// Call the JS code | |
jsCallback(@[]); | |
printf("Back from the JS\n"); | |
[application endBackgroundTask:bgTask]; | |
bgTask = UIBackgroundTaskInvalid; | |
}); | |
} | |
@end |
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var BackgroundTask = require('react-native').NativeModules.BackgroundTask; | |
BackgroundTask.beginTask("taskName", function(){}) |
Hi, do you have any more information on how to use this? Is it suppose to be used as an request Animation frame? Thanks.
@easilyBaffled Hey, did you succeed in maintaining a socket connection in the background? I'm looking for a way to do that.
@easilyBaffled @arvindnrbt @puredazzle any update? did you manage to keep the socket connection alive?
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Do you think this would allow me to maintain a socket connection in the background, while my screen is off? I have been trying to make a running app that communicates with a server with socket, http://stackoverflow.com/questions/35458549/how-to-run-socket-io-in-the-background-on-ios-in-a-react-native-app, but I can't find a way to keep the socket connection alive. I've even tried the react-native-background-geolocation, but ran into different problems there.