u013886407的博客

nil和Nil及NULL和NSNull的区别 ？nil是空对象，Nil是空类,NULL是空指针，NSNull值为空的对象。

ld: library not found for -lopencore-amrnb想这种问题就得在Link Binary With Libraries中移除掉再找到次库的位置(系统库的话可以搜到,如果在项目中的话点Other找到此库添加进去就好了)重新添加一次就好了

UIControlEventTouchDown];    [self.takeButton addTarget:self action:@selector(endAction:) forControlEvents:UIControlEventTouchUpInside];#pragma mark 视频时间少于10s松开发送-(void)endAction:(UIButton *

1.    NSString *str = @"tel:18337151430";    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:str] options:@{} completionHandler:nil];2.    dispatch_after(0.2, dispatch_get_

在做微信分享时按照文档一步步设置，最后真机调试点击分享却没任何反应。 最后一个方法 微信分享，返回值为NO.[WXApi sendReq:req];后来终于找到了原因，是因为该方法图片设置问题。[message setThumbImage:[UIImage imageNamed:@"res2.png"]];

1.必须先注册才能用   [[UNUserNotificationCenter currentNotificationCenter] requestAuthorizationWithOptions:UNAuthorizationOptionBadge | UNAuthorizationOptionSound | UNAuthorizationOptionAlert completionHa

(1)第一种方式：AMapRouteConfig *config = [AMapRouteConfig new];        config.appName = [self getApplicationName];        config.appScheme = [self getApplicationScheme];        config.startCoordinat

1.打开常亮[ [ UIApplication sharedApplication] setIdleTimerDisabled:YES] ;2.关闭长亮[ [ UIApplication sharedApplication] setIdleTimerDisabled:NO] ;

- (void)applicationDidEnterBackground:(UIApplication *)application {    [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:nil];    [self backTask];}-(void)backTask

1.去iTunes中的App Store找到高德地图邮件复制链接,然后粘贴到txt文件中,然后再将其粘贴到代码中去2.代码: [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"https://itunes.apple.com/us/app/%E9%AB%98%E5%BE%B7%E5%9C%B0%E5%9B%B

-(BMKAnnotationView *)mapView:(BMKMapView *)mapView            viewForAnnotation:(HKTPointAnnotation *)routeAnnotation{ pAV.canShowCallout = NO;}-(void)mapView:(BMKMapView *)mapView didS

//听筒打开        [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];    //扬声器打开        [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCatego

https://www.jianshu.com/p/c3dda3489a24

https://www.jianshu.com/p/8dd276722151

分2种情况:第一种情况勾选如下:就是在APP内部明显有广告的标志如QQ这种1.在APP内投放广告标识第二种情况:安装或者跳转时出现的一般情况下选第二种就行:（2）检查IDFA的方法：步骤：1、打开终端cd到要检查的文件的根目录。2、执行下列语句：grep -r advertisingIden

self.xmppstream.autoStartTLS = YES;//传输过程中tls加密-(void)xmppStream:(XMPPStream *)sender willSecureWithSettings:(NSMutableDictionary *)settings{    [settings setObject:[NSNumber numberWithBoo

http://blog.youkuaiyun.com/deft_mkjing/article/details/53117341- (void)dealloc{    self.sosView.delegate = nil;    self.locService.delegate = nil;    self.geoCodeSearch.delegate = nil;    se

加急审核链接：https://developer.apple.com/contact/app-store/?topic=expedite

1.APP内部使用地图定位功能，打开定位服务，从来没有关闭过。地图定位功能的打开与关闭应该是成对出现的。2.应用内部出现乔布斯图片和苹果logo。苹果不允许应用使用的它们的logo和乔布斯，这属于侵犯他们的只是产权，新闻内部也不准出现虽好删掉那条新闻。3.应用内出现“检查版本更新”，弹出“当前版本已经是最新版本”的提示窗。苹果不允许AppStore外部对应用进行更新，只准使用他们的更新机制

先加载视图到界面上再用下边的这句话才管用    if (IOS11_OR_LATER) {        self.homeView.tableView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;    }    else    {        self.autom

_muteChangeButton = [UIButton buttonWithType:(UIButtonTypeCustom)];    [_muteChangeButton addTarget:self action:@selector(muteChangeButtonAction:) forControlEvents:(UIControlEventTouchUpInside)]; 

NgnBaseService *mConfigurationService = _mEngine.configurationService;    [mConfigurationService setStringWithKey:IDENTITY_IMPI andValue:phone];    [mConfigurationService setStringWithKey:IDENTITY

-(void)makeVolumeOfSystemBig{    MPVolumeView *volumnView = [[MPVolumeView alloc]init];    UISlider *volumeViewSlider = nil;    for (UIView *view in volumnView.subviews) {        if ([view.c

1、打开终端2、cd 进入项目根目录3、输入命令 find . "(" -name "*.m" -or -name "*.mm" -or -name "*.cpp" -or -name "*.h" -or -name "*.rss" ")" -print | xargs wc -l4、回车

1，这种方法，拨打完电话回不到原来的应用，会停留在通讯录里，而且是直接拨打，不弹出提示NSMutableString * str=[[NSMutableString alloc] initWithFormat:@"tel:%@",@"186xxxx6979"];    //            NSLog(@"str======%@",str);[[UIApplication

- (void)viewDidLoad {    [super viewDidLoad];    NSString *str = @"2016-09-13 21:47:06";    NSTimeInterval seconds = [self dateStrToSeconds:str];    NSLog(@"%f",seconds);    NSLog(@"%@",[sel

-(void)goBtnLabel2Action:(UIButton *)sender{    BMKPoiInfo *poiModel;    if ([sender.superview.superview isEqual:self.av.hotTableView]) {        poiModel = self.poiListArray[sender.tag];   

返回根页面vc用 ： [self.navigationController popToRootViewController］返回指定的某个vc用下面（通过index定位）  [self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:2]

#import "ViewController.h"@interface ViewController ()@property (nonatomic,strong) NSMutableArray *arr1;@property (nonatomic,strong) NSMutableArray *arr2;@end@implementation ViewContro

父视图透明,子视图不透明父视图:_tripCollectionView.backgroundColor = [[UIColor blackColor]colorWithAlphaComponent:0.6];子视图:直接给正常的颜色就行labe.backgroundColor = [[UIColor redColor];

- (void)viewDidLoad {    [super viewDidLoad];    UIImage *img = [UIImage imageNamed:@"gaoyuanyuan.jpg"];    UIImageView *imageV = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, img.size.widt

NSIndexPath *indexPath = [NSIndexPath indexPathWithIndex:((CircleAnnotationView *)view).type];[self.av.hotTableView scrollToRowAtIndexPath:indexPath atScrollPosition:(UITableViewScrollPositionTo

1.大头针可以点击必须实现BMKPointAnnotation的title方法//点击大头针触发事件-(void)mapView:(BMKMapView *)mapView didSelectAnnotationView:(BMKAnnotationView *)view2.BMKAnnotationView有tag值可以获取到点击的那个大头针例如:-(void)mapView

1.头像加载  UIImageView *iv = [[UIImageView alloc]initWithFrame:CGRectMake(10+([JGGView imageWidth]+kJGG_GAP)*(i%3),floorf(i/3.0)*([JGGView imageHeight]+kJGG_GAP),[JGGView imageWidth], [JGGView imag

-(void)loadCertainMessages:(NSUInteger)limit{    NSFetchRequest *messageFetchRequest = [NSFetchRequest fetchRequestWithEntityName:@"Pre_Message"];    messageFetchRequest.predicate = [NSPredicate

这是类目:- (NSString *)fileSize{    // 总大小    unsigned long long size = 0;    NSString *sizeText = nil;    // 文件管理者    NSFileManager *mgr = [NSFileManager defaultManager];        // 文件

1.针对AFN(1)导出证书(2)在原来http请求加一句话就OK了(3)调用Get请求// Get请求+ (void)getValueWithGetUrl:(NSString *)url parameters:(NSDictionary *)parameters complete:(completes)complete;{    AFHTTPSessionMana

###########Cocoapods的使用＃＃＃＃＃＃＃＃＃＃原网站：http://www.360doc.com/content/16/0314/17/27253262_542162190.shtml1.进入项目文件里。2.终端输入 pod init,此时文件夹里就会出现Podfile文件。3.终端输入 open -a Xcode Podfile ,编辑Podfile文件。

CoreData增删改查    1.全表查询NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:@"Contact"];        NSArray *containsContact = [self.managedObjectContext executeFetchReques

//升序排序  //看小于号返回什么就是什么排序-(NSArray *)orderedTimeWithArray:(NSArray *)array{    NSArray *arr = [array sortedArrayUsingComparator:^NSComparisonResult(Pre_Message *obj1, Pre_Message *obj2) {