UIKit框架基础

// 框架的入口
  ＃import <UIKit/UIKit.h> 

int main(int argc, char * argv[]) {
    NSString * appDelegateClassName;
    appDelegateClassName = NSStringFromClass([AppDelegate class]);
    /**
     * 前两个参数和C语言一致
     * 第三个参数是NSString *principalClassName，如果是nil，那么它的值将从Info.plist获取，如果Info.plist没有，则默认为 UIApplication。principalClass这个类除了管理整个程序的生命周期之外什么都不做，它只负责监听事件然后交给delegateClass处理。
     * 第四个参数是NSString *delegateClassName，作用是对一系列系统事件，如程序将要启动、程序启动完成、程序进入后台、程序进入前台、程序退出等做出反应。AppDelegate是UIApplication默认的代理，已经遵守了UIApplicationDelegate协议。
    **/
    return UIApplicationMain(argc, argv, nil, appDelegateClassName);
}

// 伪代码：self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]

/* 关于UIView隐藏属性、alpha属性和不透明属性之间有什么区别? */
[_uiview setHidden:YES];
[_uiview setAlpha:0.0f];
/* 差异很微妙。根据UIView文档:
opaque 告诉系统视图没有透明度，因此渲染速度更快，因为可以跳过混合计算；
hidden 是布尔属性，仅更改当前视图的可见性并将其从 ui 事件中隐藏；
alpha 是一个动画属性。
设置alpha=0.0f或hidden=YES具有相同的视觉效果。然而，当您有大量嵌套视图时，使用hidden 不仅在图形意义上而且从UI事件中实际隐藏视图可能会导致更有效的响应者链. */

UITextView *textmtview = [[UITextView alloc] initWithFrame:CGRectMake(80, 365, 250, 50)];  // Initialize

NSTextAttachment* attch = [[NSTextAttachment alloc] init];
CGFloat diameter = [self fontLineHeight:[UIFont systemFontOfSize:14]];
attch.image = [UIImage imageNamed:@"waybill_detail_help"];
attch.bounds = CGRectMake(0, -5, diameter, diameter);
NSAttributedString* attStr = [NSAttributedString attributedStringWithAttachment:attch];
[attMutStr appendAttributedString:attStr];

@protocol UITableViewDataSource<NSObject>
@required
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section;  // 设置表视图每个分组的行数
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;  // 控制每一行返回的内容
@optional
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView;  // 设置分区数
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section;  // 设置分区头的内容
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath;  // 控制Cell是否可以编辑
// Other...
@end

// Cell被点击后需要做什么
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath;
// 告诉UITableView每一个Cell的高度是多少
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath;

- (nonnull UITableViewCell *)tableView:(nonnull UITableView *)tableView cellForRowAtIndexPath:(nonnull NSIndexPath *)indexPath {
    static NSString *showUserInfoCellIdentifier = @"ShowUserInfoCell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:showUserInfoCellIdentifier];
    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:showUserInfoCellIdentifier];
    }
    return cell;
}

// 自适应计算UILabel高度
+ (CGFloat)calculateLabelHeightWithString:(NSString *)string font:(UIFont *)font labelWidth:(CGFloat)labelWidth {
    NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc]init];
    paragraphStyle.lineBreakMode = NSLineBreakByWordWrapping;
    CGFloat height = [string boundingRectWithSize:CGSizeMake(labelWidth, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName:font,NSParagraphStyleAttributeName:paragraphStyle.copy} context:nil].size.height;
    short scale = [UIScreen mainScreen].scale;
    height = scale * height;
    height = ceilf(height);
    
    return height / scale;
}

// 带有状态栏的 Rect 
CGRect bound = [UIScreen mainScreen].bounds;
// 不带有状态栏的 Rect 
CGRect frame = [UIScreen mainScreen].applicationFrame;
// 设备的自然分辨率
float scale = [UIScreen mainScreen].scale;

platform :ios, '15.0' #手机的系统
target 'demogmap' do
	pod 'AMap2DMap' #2D地图SDK(2D和3D不能同时使用)
	pod 'AMapSearch' #搜索功能
end

sudo arch -x86_64 gem install ffi
arch -x86_64 pod install

    <key>NSAppTransportSecurity</key>
    <dict>
        <key>NSAllowsArbitraryLoads</key>
        <true/>
    </dict>
    <key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
    <string>始终允许访问位置信息</string>
    <key>NSLocationWhenInUseUsageDescription</key>
    <string>使用应用期间允许访问位置信息</string>

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    
    [[AMapServices sharedServices] setEnableHTTPS:YES];
    [AMapServices sharedServices].apiKey = @"4ca2e61dc9bd7504896f99b4558a2e7b";
    return YES;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.

    _mapView = [[MAMapView alloc] initWithFrame:self.view.bounds];
    _mapView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
    [_mapView setShowsUserLocation:YES]; // 显示定位
    [_mapView setUserTrackingMode:MAUserTrackingModeFollow];
    [self.view addSubview:_mapView];
    [_mapView setDelegate:self];  // 设置委托
}

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    UILongPressGestureRecognizer *lpress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)];
    lpress.delegate = self;
    [_mapView addGestureRecognizer:lpress];
}

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
    return YES;
}

- (void)longPress:(UIGestureRecognizer*)gestureRecognizer{
    if (gestureRecognizer.state == UIGestureRecognizerStateEnded){
        return;
    }
    [_mapView removeAnnotation:_pointAnnotation];
    CGPoint touchPoint = [gestureRecognizer locationInView:_mapView]; //获取坐标点
    CLLocationCoordinate2D touchMapCoordinate = [_mapView convertPoint:touchPoint toCoordinateFromView:_mapView];
    
    _pointAnnotation.coordinate = touchMapCoordinate;
    _pointAnnotation.title = @"选定位置";
    
    [_mapView addAnnotation:_pointAnnotation];
    [self.mapView addOverlay:[MACircle circleWithCenterCoordinate:touchMapCoordinate radius:1000]];
    
    [self setLocationWithLatitude:touchMapCoordinate.latitude AndLongitude:touchMapCoordinate.longitude];
}

- (MAAnnotationView*)mapView:(MAMapView *)mapView viewForAnnotation:(id <MAAnnotation>)annotation {
    if ([annotation isKindOfClass:[MAPointAnnotation class]])
    {
        static NSString *pointReuseIndetifier = @"pointReuseIndetifier";
        MAPinAnnotationView *annotationView = (MAPinAnnotationView*)[mapView dequeueReusableAnnotationViewWithIdentifier:pointReuseIndetifier];
        if (annotationView == nil)
        {
            annotationView = [[MAPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:pointReuseIndetifier];
        }
        
        annotationView.canShowCallout               = YES;
        annotationView.animatesDrop                 = YES;
        annotationView.draggable                    = YES;
        annotationView.rightCalloutAccessoryView    = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
        annotationView.pinColor                     = [self.annotations indexOfObject:annotation] % 3;
        
        return annotationView;
    }
    
    return nil;
}

- (MAOverlayRenderer *)mapView:(MAMapView *)mapView rendererForOverlay:(id<MAOverlay>)overlay {
    if([overlay isKindOfClass:[MACircle class]]){
        MACircleRenderer *render = [[MACircleRenderer alloc] initWithCircle:overlay];
        render.fillColor = [UIColor colorWithRed:1.0 green:0.8 blue:0.0 alpha:0.8];  //圆圈的填充颜色
        render.strokeColor = UIColor.blueColor;  //圆圈的轮廓颜色
        render.lineWidth = 3.f;  //圆圈轮廓的粗细
        return render;
    }
    return nil;
}

- (IBAction)findWayAction:(id)sender {
    // 设置步行路径规划请求参数
    AMapWalkingRouteSearchRequest* walkRequest = [[AMapWalkingRouteSearchRequest alloc] init];
    // 设置起点
    walkRequest.origin = [AMapGeoPoint locationWithLatitude:((MAPointAnnotation*)(_annotations[0])).coordinate.latitude longitude:((MAPointAnnotation*)(_annotations[0])).coordinate.longitude];
    // 点击设置终点
    walkRequest.destination = [AMapGeoPoint locationWithLatitude:((MAPointAnnotation*)(_pointAnnotation)).coordinate.latitude longitude:((MAPointAnnotation*)(_pointAnnotation)).coordinate.longitude];
    // 发起路径搜索，发起后会执行代理方法
    [_search AMapWalkingRouteSearch:walkRequest];
}

//路线解析
- (MAPolyline *)polylinesForPath:(AMapPath *)path{
    if (path == nil || path.steps.count == 0){
        return nil;
    }
    NSMutableString *polylineMutableString = [@"" mutableCopy];
    for (AMapStep *step in path.steps) {
        [polylineMutableString appendFormat:@"%@;",step.polyline];
    }
    
    NSUInteger count = 0;
    CLLocationCoordinate2D *coordinates = [self coordinatesForString:polylineMutableString coordinateCount:&count parseToken:@";"];
    
    MAPolyline *polyline = [MAPolyline polylineWithCoordinates:coordinates count:count];
    
    free(coordinates), coordinates = NULL;
    return polyline;
}

//解析经纬度
- (CLLocationCoordinate2D *)coordinatesForString:(NSString *)string
                                 coordinateCount:(NSUInteger *)coordinateCount
                                      parseToken:(NSString *)token{
    if (string == nil){
        return NULL;
    }
    
    if (token == nil){
        token = @",";
    }
    
    NSString *str = @"";
    if (![token isEqualToString:@","]){
        str = [string stringByReplacingOccurrencesOfString:token withString:@","];
    }else{
        str = [NSString stringWithString:string];
    }
    
    NSArray *components = [str componentsSeparatedByString:@","];
    NSUInteger count = [components count] / 2;
    if (coordinateCount != NULL){
        *coordinateCount = count;
    }
    CLLocationCoordinate2D *coordinates = (CLLocationCoordinate2D*)malloc(count * sizeof(CLLocationCoordinate2D));
    
    for (int i = 0; i < count; i++){
        coordinates[i].longitude = [[components objectAtIndex:2 * i]     doubleValue];
        coordinates[i].latitude  = [[components objectAtIndex:2 * i + 1] doubleValue];
    }
    return coordinates;
}

// 需遵守协议 UIImagePickerControllerDelegate, UINavigationControllerDelegate
_uiipc = [[UIImagePickerController alloc] init];
//获取照片的类型
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
    _uiipc.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
}
//设置代理
_uiipc.delegate = self;
//是否允许编辑
_uiipc.allowsEditing = YES;

#pragma mark UIImagePickerControllerDelegate

- (void)imagePickerControllerDidCancel:(UIImagePickerController*)picker {
    [picker dismissViewControllerAnimated:YES completion:nil];
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    UIImageView* imgview = _uiiv;
    // 获取选择的图片
    UIImage* org = [info objectForKey:UIImagePickerControllerOriginalImage];
    // 修改图片
    UIImage* cir = [self CircleImageWithRef:org AndDiameter:100.0f AndBorderWidth:2.0f AndBorderColor:[UIColor redColor]];
    // 替换原来的头像
    [picker dismissViewControllerAnimated:YES completion:^(void) {
        [UIView animateWithDuration:0.5f animations:^(void) {
            [self.view setAlpha:1.0f];
            [imgview setImage:cir];
        } completion:nil];
        UIAlertController* uiac = [UIAlertController alertControllerWithTitle:@"提示" message:@"更改头像" preferredStyle:UIAlertControllerStyleAlert];
        [uiac addAction:[UIAlertAction actionWithTitle:@"好的" style:UIAlertActionStyleDefault handler:nil]];
        [self presentViewController:uiac animated:YES completion:nil];
    }];
}

@property(nonatomic,readonly,retain) CALayer *layer;  // 通过UIView的layer属性可以访问这个层

// 通过动画事务(CATransaction)关闭默认的隐式动画效果
[CATransaction begin];
[CATransaction setDisableActions:YES];
self.myview.layer.position = CGPointMake(10, 10);
[CATransaction commit];

/**
struct CATransform3D
{
CGFloat    m11（x缩放）,     m12（y切变）,      m13（旋转）,     m14（）;

CGFloat    m21（x切变）,     m22（y缩放）,      m23（）,        m24（）;

CGFloat    m31（旋转）,      m32（）,          m33（）,        m34（透视效果，要操作的这个对象要有旋转的角度，否则没有效果。正直/负值都有意义）;

CGFloat    m41（x平移）,     m42（y平移）,      m43（z平移）,   m44（）;
};
**/