解決辦法：項目—>targets->build settings->build options->changed the value of the "Compiler for C/C++/Objective-C" to Default Compiler. 

1.1如圖引用的是.framework形式開發(fā)包時，引入的命名空間則是#import <BaiduMapAPI/BMapKit.h>//引入所有的頭文件#import <BaiduMapAPI/BMKMapView.h>//只引入所需的單個頭文件如果是引入用的是.a形式開發(fā)包時，引入的命名空間則是#import “BMapKit.h"1.2百度地圖現(xiàn)在提供的兩個.framework的包，一個是真機一個是測試機，可以使用終端的命令把它合成一個；

- (void)viewDidLoad {    [super viewDidLoad];        //百度地圖初始化    _mapView=[[BMKMapView alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT-NAVBARHEIGHT)];    _mapView.delegate=self;    [self.view addSubview:_mapView];        //標出坐標點    [self addPointAnnotation];}//添加標注- (void)addPointAnnotation{    for (int i=0; i<self.coordinates.count; i++) {        coordinateBean *model=self.coordinates[i];                BMKPointAnnotation* pointAnnotation = [[BMKPointAnnotation alloc]init];        CLLocationCoordinate2D coor;        coor.latitude = model.latitude;        coor.longitude = model.longitude;        pointAnnotation.coordinate = coor;                //通過title來起到傳值的作用        pointAnnotation.title=[NSString stringWithFormat:@"%d",i];        [_mapView addAnnotation:pointAnnotation];        //顯示彈出窗        [_mapView selectAnnotation:pointAnnotation animated:YES];                                //判斷那個是中心，沒有則0必傳參數(shù)        if (i==self.selectIndex) {            BMKCoordinateRegion region; ////表示范圍的結(jié)構(gòu)體            region.center.latitude  = model.latitude;// 中心中            region.center.longitude = model.longitude;            region.span.latitudeDelta = 0;//經(jīng)度范圍（設(shè)置為0.1表示顯示范圍為0.2的緯度范圍）            region.span.longitudeDelta = 0;//緯度范圍                        [_mapView setRegion:region];        }    }}//處理自定義彈出視圖- (BMKAnnotationView *)mapView:(BMKMapView *)mapView viewForAnnotation:(id <BMKAnnotation>)annotation{    if ([annotation isKindOfClass:[BMKPointAnnotation class]]) {        BMKPinAnnotationView *newAnnotationView = [[BMKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"myrenameMark"];        newAnnotationView.pinColor = BMKPinAnnotationColorPurple;        newAnnotationView.animatesDrop = YES;// 設(shè)置該標注點動畫顯示               newAnnotationView.image = [UIImage imageNamed:self.mapPointImageName];   //把大頭針換成別的圖片                int selectIndex=[((BMKPointAnnotation *)annotation).title intValue];        //獲得值        coordinateBean *model=[self.coordinates objectAtIndex:[((BMKPointAnnotation *)annotation).title intValue]];                        UIView *popView=[[UIView alloc]initWithFrame:CGRectMake(0, 3, 100, 20)];                UIImage *img=[UIImage imageNamed:@"mapViewBackground"];        UIEdgeInsets edge=UIEdgeInsetsMake(0, 20, 0, 10);        img=[img resizableImageWithCapInsets:edge resizingMode:UIImageResizingModeStretch];        UIImageView *myimage=[[UIImageView alloc] initWithImage:img];        myimage.frame=CGRectMake(30, 0, 100, 40);        myimage.userInteractionEnabled=YES;                [popView addSubview:myimage];                        //自定義顯示的內(nèi)容        UILabel *driverName = [[UILabel alloc]initWithFrame:CGRectMake(0, 3, 100, 15)];        driverName.backgroundColor=[UIColor clearColor];        driverName.text=model.title;        driverName.font = [UIFont systemFontOfSize:12];        driverName.textColor = [UIColor blackColor];        driverName.textAlignment = NSTextAlignmentLeft;        [myimage addSubview:driverName];                UILabel *carName = [[UILabel alloc]initWithFrame:CGRectMake(0, 18, 100, 15)];        carName.backgroundColor=[UIColor clearColor];        carName.text=model.comments;        carName.font = [UIFont systemFontOfSize:12];        carName.textColor = [UIColor blackColor];        carName.textAlignment = NSTextAlignmentLeft;        [myimage addSubview:carName];                        BMKActionPaopaoView *pView = [[BMKActionPaopaoView alloc]initWithCustomView:popView];        pView.frame = CGRectMake(0, 0, 100, 40);        ((BMKPinAnnotationView*)newAnnotationView).paopaoView = nil;        ((BMKPinAnnotationView*)newAnnotationView).paopaoView = pView;        newAnnotationView.tag=selectIndex+10;                return newAnnotationView;    }    return nil;}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}/** *  @author wujunyang, 15-05-12 13:05:05 * *  @brief  跟對百度地圖的處理 *  @param animated <#animated description#> */-(void)viewWillAppear:(BOOL)animated{    [_mapView viewWillAppear];    _mapView.delegate=self;    _locationService.delegate=self;}/** *  @author wujunyang, 15-01-06 10:01:53 * *  跟對百度地圖的處理 * *  @param animated <#animated description#> */-(void)viewWillDisappear:(BOOL)animated{    [_mapView viewWillDisappear];    _mapView.delegate=nil;    _locationService.delegate=nil；}其中有個自定義model:@interface coordinateBean : NSObject//緯度@PRoperty(assign,nonatomic)float latitude;//經(jīng)度@property(assign,nonatomic)float longitude;//標題@property(strong,nonatomic)NSString *title;//注解@property(strong,nonatomic)NSString *comments;@end

toolbar屬性、toolbarItems與上一講的navigationBar、navigationItem類似。只不過toolbarItems沒有navigationItem的左右區(qū)分，它就自己一個人在做事，相當于沒有下屬。可以在toolbar上設(shè)置很多，比如背景顏色、背景圖片、背景樣式、大小位置（不過有些貌似設(shè)置無效），當然和navigationBar一樣，對于它的是否顯示和隱藏是由它的老爸即navigationController控制的。所以[self.navigationController setNavigationBarHidden:YES animated:YES];也會把底部的toolBarItems給隱藏起來，如果要隱藏導航又不想底部toolBarItems被隱藏掉，可以用普通的view替代toolBarItems;首先在viewDidLoad里設(shè)置toolBarHidden = NO, 默認是YES（隱藏的）為了讓toolbar顯示，需要設(shè)置為NO（不隱藏）。- (void)viewDidLoad{    [super viewDidLoad];    self.title = @"隱藏導航欄";    // self.toolbarItems    self.navigationController.toolbar.barStyle = self.toolBar.barStyle;    self.navigationController.toolbarHidden = NO;    [self.navigationController.toolbar setTranslucent:YES];     self.toolbarItems = [[[NSMutableArray alloc] initWithArray:self.toolBar.items] autorelease];} 在點擊中間button的時候的顯示和隱藏navigation bar和toolBar實現(xiàn)代碼如下：- (IBAction)toggleNavigationBar:(id)sender{    //Check the current state of the navigation bar...    BOOL navBarState = [self.navigationController isNavigationBarHidden];    //Set the navigationBarHidden to the opposite of the current state.    [self.navigationController setNavigationBarHidden:!navBarState animated:YES];    [self.navigationController setToolbarHidden:!navBarState animated:YES];    //Change the label on the button.    if (navBarState)    {        [button setTitle:@"隱藏 Navigationr and toolbar" forState:UIControlStateNormal];        [button setTitle:@"隱藏 Navigation Bar toolbar" forState:UIControlStateHighlighted];    }    else    {        [button setTitle:@"顯示 Navigation Bar toolbar" forState:UIControlStateNormal];        [button setTitle:@"顯示 Navigation Bar toolbar" forState:UIControlStateHighlighted];    }}

在viewDidload里面只做addSubview的事情，然后在viewWillAppear里面做布局的事情，最后在viewDidAppear里面做Notification的監(jiān)聽之類的事情。至于屬性的初始化，則交給getter去做。@interface CustomObject()@property (nonatomic, strong) UILabel *label;@end@implement#pragma mark - life cycle- (void)viewDidLoad{    [super viewDidLoad];    [self.view addSubview:self.label];}- (void)viewWillAppear:(BOOL)animated{    [super viewWillAppear:animated];    self.label.frame = CGRectMake(1, 2, 3, 4);}#pragma mark - getters and setters- (UILabel *)label{    if (_label == nil) {        _label = [[UILabel alloc] init];        _label.text = @"1234";        _label.font = [UIFont systemFontOfSize:12];        ... ...    }    return label;}@end注意：*重點，在get方法里面不能寫self.noLabel；千萬不要用“點”語法，這樣會造成get方法死循環(huán)，因為“點”語法就是調(diào)用的get方法，所以要用下劃線屬性名的方法得到對象（在內(nèi)存這其實是一個指針）。

@interface MasonryViewController ()@property(nonatomic,strong)UIView *conView;@property(nonatomic,assign)int intstate;@end@implementation MasonryViewController- (void)viewDidLoad {    [super viewDidLoad];        [self.view addSubview:self.conView];}//懶加載-(UIView *)conView{    if(_conView==nil)    {        _conView=[[UIView alloc]init];        _conView.backgroundColor=[UIColor redColor];    }    return _conView;}-(int)intstate{    _intstate=0;    return _intstate;}//布局約束-(void)viewDidLayoutSubviews{    [self.conView mas_makeConstraints:^(MASConstraintMaker *make) {        make.top.equalTo(self.view.mas_top).with.offset(100);        make.left.equalTo(self.view.mas_left).with.offset(60);        make.right.equalTo(self.view.mas_right).with.offset(0);        make.height.equalTo(@50);    }];}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];}

生成0-x之間的隨機正整數(shù)int value =arc4random_uniform(x ＋ 1);生成隨機正整數(shù)int value = arc4random() 通過arc4random() 獲取0到x-1之間的整數(shù)的代碼如下：int value = arc4random() % x; 獲取1到x之間的整數(shù)的代碼如下: int value = (arc4random() % x) + 1; 最后如果想生成一個浮點數(shù)，可以在項目中定義如下宏：#define ARC4RANDOM_MAX      0x100000000 然后就可以使用arc4random() 來獲取0到100之間浮點數(shù)了（精度是rand（）的兩倍），代碼如下：double val = floorf(((double)arc4random() / ARC4RANDOM_MAX) * 100.0f);實例(從數(shù)組中隨機顯示出一個背景圖,再通過網(wǎng)絡(luò)加載顯示出來): self.bgView=[[UIImageView alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT)];    self.bgView.image=[UIImage imageNamed:@"AppBg"];    [self.view addSubview:self.bgView];    [self.view sendSubviewToBack:self.bgView];        NSDictionary *params=[[NSDictionary alloc] init];    [[HomeMainNetAPIManager sharedManager] getBackgroundImage:params andBlock:^(id data, NSError *error) {        if (!error&&data) {            BackgroundImageBean *groundImagebean =(BackgroundImageBean *)data;            int dataNum=groundImagebean.data.count;            if (groundImagebean.data&&dataNum>0) {                int r=arc4random_uniform(dataNum);                GroundImageBean *curBean=groundImagebean.data[r];                [self.bgView sd_setImageWithURL:[NSURL URLWithString:curBean.ImgUrl] placeholderImage:[UIImage imageNamed:@"AppBg"] completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {                    dispatch_async(dispatch_get_main_queue(), ^{                        self.bgView.image=image;                    });                }];            }        }    }];

模擬器的路徑從之前的~/Library/application Support/iPhone Simulator移動到了~/Library/Developer/CoreSimulator/Devices/文件都在個人用戶名文件夾下的一個隱藏文件夾里，中文叫資源庫，他的目錄其實是Library。因為應用是在沙箱（sandbox）中的，在文件讀寫權(quán)限上受到限制，只能在幾個目錄下讀寫文件：Documents：應用中用戶數(shù)據(jù)可以放在這里，iTunes備份和恢復的時候會包括此目錄tmp：存放臨時文件，iTunes不會備份和恢復此目錄，此目錄下文件可能會在應用退出后刪除Library/Caches：存放緩存文件，iTunes不會備份此目錄，此目錄下文件不會在應用退出刪除iTunes在與iPhone同步時，備份所有的Documents和Library文件。iPhone在重啟時，會丟棄所有的tmp文件。查看方法：方法1、可以設(shè)置顯示隱藏文件，然后在Finder下直接打開。設(shè)置查看隱藏文件的方法如下：打開終端，輸入命名(1)顯示Mac隱藏文件的命令：defaults write com.apple.finder AppleShowAllFiles -bool true(2)隱藏Mac隱藏文件的命令：defaults write com.apple.finder AppleShowAllFiles -bool false(3)輸完單擊Enter鍵，退出終端，重新啟動Finder就可以了 重啟Finder：鼠標單擊窗口左上角的蘋果標志-->強制退出-->Finder-->現(xiàn)在能看到資源庫文件夾了。 打開資源庫后找到/Application Support/iPhone Simulator/文件夾。這里面就是模擬器的各個程序的沙盒目錄了。方法2、這種方法更方便，在Finder上點->前往->前往文件夾，輸入/Users/username/Library/Application Support/iPhone Simulator/  前往。username這里寫用戶名。 自定義類返回各目錄路徑：#import <Foundation/Foundation.h>@interface ICSandboxHelper : NSObject+ (NSString *)homePath;     // 程序主目錄，可見子目錄(3個):Documents、Library、tmp+ (NSString *)appPath;        // 程序目錄，不能存任何東西+ (NSString *)docPath;        // 文檔目錄，需要ITUNES同步備份的數(shù)據(jù)存這里，可存放用戶數(shù)據(jù)+ (NSString *)libPrefPath;    // 配置目錄，配置文件存這里+ (NSString *)libCachePath;    // 緩存目錄，系統(tǒng)永遠不會刪除這里的文件，ITUNES會刪除+ (NSString *)tmpPath;        // 臨時緩存目錄，APP退出后，系統(tǒng)可能會刪除這里的內(nèi)容+ (BOOL)hasLive:(NSString *)path; //判斷目錄是否存在，不存在則創(chuàng)建實現(xiàn)代碼:#import "ICSandboxHelper.h"@implementation ICSandboxHelper+ (NSString *)homePath{    return NSHomeDirectory();}+ (NSString *)appPath{    NSArray * paths = NSSearchPathForDirectoriesInDomains(NSApplicationDirectory, NSUserDomainMask, YES);    return [paths objectAtIndex:0];}+ (NSString *)docPath{    NSArray * paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);    return [paths objectAtIndex:0];}+ (NSString *)libPrefPath{    NSArray * paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);    return [[paths objectAtIndex:0] stringByAppendingFormat:@"/Preference"];}+ (NSString *)libCachePath{    NSArray * paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);    return [[paths objectAtIndex:0] stringByAppendingFormat:@"/Caches"];}+ (NSString *)tmpPath{return [NSHomeDirectory() stringByAppendingFormat:@"/tmp"];}+ (BOOL)hasLive:(NSString *)path{    if ( NO == [[NSFileManager defaultManager] fileExistsAtPath:path] )    {        return [[NSFileManager defaultManager] createDirectoryAtPath:path                                         withIntermediateDirectories:YES                                                          attributes:nil                                                               error:NULL];    }        return NO;}