进入后台网络请求无法回调
2021-03-10 本文已影响0人
tom__zhu
APP设置了backgroundMode，但是进入后台以后，在 -applicationDidEnterBackground:中发出的网络请求概率性无法进入成功或是失败回调。
从AFN issue里翻到一个解决方案，经过验证有效，但因为取法理论依据无法保证多机型多系统版本兼容。
-(void) performFetch {
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 0.1 * NSEC_PER_SEC), dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSString *urlstr = @"http://wiki.XX.domain/rest/likes/1.0/content/80524087/likes";
XXGetURLRequest *request = [[XXGetURLRequest alloc] initWithURL:urlstr];
XXURLSessionDataTask *task = [XXHTTPSessionManager dataTaskWithGetRequest:request];
[task startRequestWithSuccess:^(XXURLResponse *response) {
id json = [response.data toJSON];
NSLog(@"💫background success: %@", json);
} failure:^(XXURLResponse *response) {
NSLog(@"💫background failure: %@", response.error.description);
}];
});
}
Starting the fetch as background task with 0.1 sec delay seems to work to avoid the problem:
