Question

如何使用locationManager startMonitoringForRegion方法

开始监控多个区域

例如我有三个区域我想监视它

CLLocationCoordinate2D centreLoc = {28.965243, 48.149724};
CLLocationDistance regionRadius = 200.00;
CLRegion *grRegion = [[CLRegion alloc] initCircularRegionWithCenter:centreLoc radius:regionRadius identifier:@"grRegion1"];


CLLocationCoordinate2D centreLoc2 = {28.765243, 48.149724};
CLLocationDistance regionRadius2 = 200.00;
CLRegion *grRegion2 = [[CLRegion alloc] initCircularRegionWithCenter:centreLoc2 radius:regionRadius2 identifier:@"grRegion2"];

CLLocationCoordinate2D centreLoc3 = {28.865243, 48.149724};
CLLocationDistance regionRadius3 = 200.00;
CLRegion *grRegion3 = [[CLRegion alloc] initCircularRegionWithCenter:centreLoc3 radius:regionRadius3 identifier:@"grRegion3"];

CLLocationAccuracy acc2=kCLLocationAccuracyBest;
[locationManager startMonitoringForRegion:grRegion2 desiredAccuracy:acc2];

如何开始监控这三个区域？

Answer 1

你走在正确的轨道上。

首先，你的坐标应该是一个double值，你使用的是浮点值。

其次，您需要为纬度和经度制作单独的数组，然后在索引i处获取这些值。

这应该有用。

for (int i = 0; i < [AllRegionsArray count]; i++) {
    NSArray *longLati = [allRegionsArray objectAtIndex:i];
    NSMutableArray *latArray = longLati objectAtIndex:0];
    NSMutableArray *longArray = longLati objectAtIndex:1];
    lutiuid = [latArray objectAtIndex:i];
    longtuid = [longArray objectAtIndex:i];

    CLLocationCoordinate2D centreLoc = [CLLocation2DMake([[lutiuid] doubleValue], [[longtuid] doubleValue]);
//iOS 6
    CLRegion *grRegion = [[CLRegion alloc] initWithCenter:centreLoc radius:200 identifier://yourIdentifier, I used the string of the address];
//iOS 7
CLCircularRegion *region = [[CLCircularRegion alloc] initWithCenter:coordinate radius:radius identifier:identifier];
    locationManager.desiredAccuracy = kCLLocationAccuracyBest;
    [locationManager startMonitoringForRegion:grRegion];
    NSLog(@"monotoring regions:%@", locationManager.monitoredRegions);

CoreLocation开始监控多个区域

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