本文实现iOS无限后台的原理是:开机iOS允许的后台定位实现APP在后台无限运行。
具体步骤如下
在plist文件里添加:NSLocationWhenInUseUsageDescription,NSLocationAlwaysUsageDescription,Required background modes 数组添加:App registers for location updates值
然后在AppDelegate.m文件里实现如下代码:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc]initWithFrame:[[UIScreen mainScreen] bounds]];
self.window.backgroundColor = [UIColor whiteColor];
self.window.rootViewController = [[RootViewController alloc] init];
[self initData];
[self.window makeKeyAndVisible];
return YES;
}
// 进入前台
- (void)applicationWillResignActive:(UIApplication *)application
{
}
// 进入后台
- (void)applicationDidEnterBackground:(UIApplication *)application
{
}
#pragma mark ---- 私有方法
// 初始化数据
-(void)initData
{
_locationManager = [[CLLocationManager alloc] init];
_locationManager.delegate = self;
_locationManager.distanceFilter = kCLDistanceFilterNone;
_locationManager.pausesLocationUpdatesAutomatically = NO;
[_locationManager startUpdatingLocation];
}
#pragma mark - CLLocationManagerDelegate
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
// 成功回调
}
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
// 失败回调
}
这样就能实现APP在后台无限运行了。