最近几年来,地理信息系统无论是在理论上还是应用上都处在一个飞速发展的阶段。 GIS被应用于多个领域的建模和决策支持,如城市管理、区划、环境整治等等,地理信息成为信息时代重要的组成部分之一; “数字地球”概念的提出,更进一步推动了作为其技术支撑的GIS的发展。 与此同时,一些学者致力于相关的理论研究,如空间感知、空间数据误差、空间关系的形式化等等。 这恰好说明了地理信息系统作为应用技术和学科的两个方面,并且这两个方面构成了相互促进的发展过程。
9.38.1. Brief introduction ¶
IAD is an advertising platform launched by Apple that helps developers generate revenue from apps.
9.38.2. Instance step ¶
Create a simple View based application
Select the project file, then select the target, then select the frame and add the iAd.framework.
Update the ViewController.h as follows
#import #import @interface ViewController : UIViewController<ADBannerViewDelegate> { ADBannerView *bannerView; } @end -
Update ViewController.m, as shown below
#import "ViewController.h" @interface ViewController () @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; bannerView = [[ADBannerView alloc]initWithFrame: CGRectMake(0, 0, 320, 50)]; // Optional to set background color to clear color [bannerView setBackgroundColor:[UIColor clearColor]]; [self.view addSubview: bannerView]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } #pragma mark - AdViewDelegates -(void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error{ NSLog(@"Error loading"); } -(void)bannerViewDidLoadAd:(ADBannerView *)banner{ NSLog(@"Ad loaded"); } -(void)bannerViewWillLoadAd:(ADBannerView *)banner{ NSLog(@"Ad will load"); } -(void)bannerViewActionDidFinish:(ADBannerView *)banner{ NSLog(@"Ad did finish"); } @end
9.38.3. Output ¶
Run the application and get the following output:
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1. Angularjs2
8
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1. SVG tutorial
19
-
1. Memcached
20
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1. C# tutorial
61
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1. Sqlite
47
-
2. Go
43
-
2. Docker
59
-
2. Vue3
19
-
2. Servlet
21
-
3. React
23
-
3. SOAP tutorial
10
-
3. Android
18
-
3. Mongodb
44
-
3. Kotlin
18
-
4. Lua
31
-
4. MySQL tutorial
35
-
4. Appml
12
-
5. Perl
45
-
5. Postgresql
41
-
web
15
-
5. Web Services tutorial
6
-
6. Ruby
42
-
6. Design-pattern
35
-
7. Django
18
-
7. Rust
22
-
6. WSDL tutorial
8
-
8. Foundation
39
-
9. Ios
43
-
9.22. The use of IOS View switching
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9.5. Create the first iPhone application
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9.19. Use of table view
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9.33. IOS sends email
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9.31. IOS positioning operation
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9.28. IOS accelerometer (accelerometer)
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9.7. Delegate (Delegates) example
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9.37. In-app purchase of IOS
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9.40. IOS storyboard (Storyboards)
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9.10. Why use different input types?
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8. Css3
26
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9. Swift
44
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11. HTML tutorial-(HTML5 Standard)
54
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12. Http
6
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13. Regex
6
-
14. Regexp
8
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1. Introduction to geographic information system
6
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2. From the Real World to the Bit World
3
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3. Spatial Data Model
7
-
4. 空间参照系统和 地图投影
5
-
5. Data in GIS
3
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6. Spatial data acquisition
2
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7. Spatial Data Management
6
-
8. Spatial analysis
8
-
9. 数字地形模型( DTM )与地形分析
5
-
10. 空间建模与 空间决策支持
6
-
11. Spatial data representation and map making
6
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12. 3S Integration Technology
5
-
13. 网络地理信息系统
3
-
14. Examples of Geographic Information System Application
8
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15. Organization and Management of Geographic Information System Application Projects
9
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16. Geographic Information system Software Engineering Technology
6
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17. Geographic Information System Standards
3
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18. Geographic Information System and Society
3
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19. Earth Information Science and Digital Earth
3