1.iOS9新特性：Bitcode
当运行之前的项目报错时，我们可以在”Build Settings”->”Enable Bitcode”中设置属性为NO
2.获取设备名字
[Device machineName]
3.获取沙盒Documents路径
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0];
4.发短信方法
4.1openURL
[[UIApplication sharedApplication] openURL:@"sms:12345678"];
4.2MFMessageComposeViewController
首先在程序中导入MessageUI.framework。import头文件：#import "DeviceDetection.h"
然后在代码中使用下面的语句来调用短信发送窗口，并指定号码和短信内容：
MFMessageComposeViewController *controller = [[MFMessageComposeViewController alloc] init]; controller.title = @"短信房源"; controller.body = HouseInfo; controller.recipients = nil; controller.messageComposeDelegate = self; [self presentViewController:controller animated:YES completion:nil];
5.复制内容到剪切板
UIPasteboard *pasteboard = [UIPasteboard generalPasteboard]; pasteboard.string = ResponseObj;
6。iOS字符创中去除特殊字符串
NSInteger leftLength=[[leftStr stringByTrimmingCharactersInSet:[NSCharacterSet decimalDigitCharacterSet]] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]].length;
7.NSCharacterSet 简单用法
NSMutableCharacterSet *base = [NSMutableCharacterSet lowercaseLetterCharacterSet]; //字母 NSCharacterSet *decimalDigit = [NSCharacterSet decimalDigitCharacterSet]; //十进制数字 [base formUnionWithCharacterSet:decimalDigit]; //字母加十进制 NSString *string = @"ax@d5s#@sfn$5`SF$$%x^(#e{]e"; //用上面的base隔开string然后组成一个数组，然后通过componentsJoinedByString，来连接成一个字符串 NSLog(@"%@",[[string componentsSeparatedByCharactersInSet:base] componentsJoinedByString:@"-"]); [base invert]; //非 字母加十进制 NSLog(@"%@",[[string componentsSeparatedByCharactersInSet:base] componentsJoinedByString:@"-"]); 答应结果： ax@d-s#@sfn$-`SF$$%x^(#e{]e ----5-------5--------------
8.从系统选择多张图片
先导入库ELCImagePicker（第三方）
//从照片库 if ([self shouldImage]) { ELCImagePickerController *elcPicker = [[ELCImagePickerController alloc] initImagePicker]; elcPicker.maximumImagesCount = 16-[images_ numberOfPhotos]; elcPicker.returnsOriginalImage = NO; elcPicker.imagePickerDelegate = self; [self presentViewController:elcPicker animated:YES completion:nil]; }else { UIAlertView *al=[[UIAlertView alloc]initWithTitle:@"权限受限" message:@"设置-手机梵讯-隐私" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil]; [al show]; }
#pragma mark ELCImagePickerController delegate -(void)elcImagePickerController:(ELCImagePickerController *)picker didFinishPickingMediaWithInfo:(NSArray *)info { NSString *imagePathDir; BOOL isSuccess = NO; for (NSDictionary *dict in info) { UIImage* img = [dict objectForKey:UIImagePickerControllerOriginalImage]; imagePathDir = [[Util getHouseDirCurrentDateType] stringByReplacingOccurrencesOfString:@"_city_" withString:[YlwSingleMode shareDataModle].CityPinyin]; //需要准备的数据 NSString *PKHouseImageLite = [Util GetUUIDLite]; NSString *PKHouseImage = [Util convertGuidSqlserverFromSqlite:PKHouseImageLite isClean:YES]; NSString *imgType = @".jpg"; CGSize sizeImageBig = [self getImageSize:img.size targetSize:CGSizeMake(600, 450)]; CGSize sizeImageSmall = [self getImageSize:img.size targetSize:CGSizeMake(200, 150)]; CGSize sizeImageIndex = [self getImageSize:img.size targetSize:CGSizeMake(80, 60)]; UIImage *imgBig = [self reSizeImage:img toSize:sizeImageBig]; UIImage *imgSmall = [self reSizeImage:img toSize:sizeImageSmall]; UIImage *imgIndex = [self reSizeImage:img toSize:sizeImageIndex]; imagePathDir=[imagePathDir stringByReplacingOccurrencesOfString:@"house/" withString:@"House/"]; NSString *imagePathBig = [imagePathDir stringByAppendingPathComponent:[NSString stringWithFormat:@"house_%@_big.jpg",PKHouseImage]]; NSString *imagePathSmall = [imagePathDir stringByAppendingPathComponent:[NSString stringWithFormat:@"house_%@_small.jpg",PKHouseImage]]; NSString *imagePathIndex = [imagePathDir stringByAppendingPathComponent:[NSString stringWithFormat:@"house_%@_index.jpg",PKHouseImage]]; NSData *imgBigData = UIImageJPEGRepresentation(imgBig, 0.3); NSData *imgSmallData = UIImageJPEGRepresentation(imgSmall, 0.3); NSData *imgIndexData = UIImageJPEGRepresentation(imgIndex, 0.3); NSInteger imgSize_Big = imgBigData.length; NSInteger imgSize_Small = imgSmallData.length; for (int i=0; i<3; i++) { [_houseImageCache storeImage:imgBig imageData:imgBigData forKey:imagePathBig toDisk:YES]; i++; [_houseImageCache storeImage:imgSmall imageData:imgSmallData forKey:imagePathSmall toDisk:YES]; i++; [_houseImageCache storeImage:imgIndex imageData:imgIndexData forKey:imagePathIndex toDisk:YES]; } isSuccess = [self saveHouseImagesWith:PKHouseImageLite ImgPath:imagePathDir ImgType:imgType ImgSizeBig:imgSize_Big ImgSizeSmaill:imgSize_Small]; [self houseimageNumber:nil]; } if (isSuccess) { [ProgressHUD showSuccess:@"添加成功"]; [picker dismissViewControllerAnimated:YES completion:nil]; [self reloadSubviews]; } }
-(void)elcImagePickerControllerDidCancel:(ELCImagePickerController *)picker { [self dismissViewControllerAnimated:YES completion:nil]; } -(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType]; NSString *imagePathDir; BOOL isSuccess = NO; if ([mediaType isEqualToString:(NSString*)kUTTypeImage]) { UIImage* img = [info objectForKey:UIImagePickerControllerOriginalImage]; UIImageWriteToSavedPhotosAlbum(img, self, @selector(image:didFinishSavingWithError:contextInfo:), nil); imagePathDir = [[Util getHouseDirCurrentDateType] stringByReplacingOccurrencesOfString:@"_city_" withString:[YlwSingleMode shareDataModle].CityPinyin]; //需要准备的数据 NSString *PKHouseImageLite = [Util GetUUIDLite]; NSString *PKHouseImage = [Util convertGuidSqlserverFromSqlite:PKHouseImageLite isClean:YES]; NSString *imgType = @".jpg"; CGSize sizeImageBig = [self getImageSize:img.size targetSize:CGSizeMake(600, 450)]; CGSize sizeImageSmall = [self getImageSize:img.size targetSize:CGSizeMake(200, 150)]; CGSize sizeImageIndex = [self getImageSize:img.size targetSize:CGSizeMake(80, 60)]; UIImage *imgBig = [self reSizeImage:img toSize:sizeImageBig]; UIImage *imgSmall = [self reSizeImage:img toSize:sizeImageSmall]; UIImage *imgIndex = [self reSizeImage:img toSize:sizeImageIndex]; imagePathDir=[imagePathDir stringByReplacingOccurrencesOfString:@"house/" withString:@"House/"]; NSString *imagePathBig = [imagePathDir stringByAppendingPathComponent:[NSString stringWithFormat:@"house_%@_big.jpg",PKHouseImage]]; NSString *imagePathSmall = [imagePathDir stringByAppendingPathComponent:[NSString stringWithFormat:@"house_%@_small.jpg",PKHouseImage]]; NSString *imagePathIndex = [imagePathDir stringByAppendingPathComponent:[NSString stringWithFormat:@"house_%@_index.jpg",PKHouseImage]]; NSData *imgBigData = UIImageJPEGRepresentation(imgBig, 0.3); NSData *imgSmallData = UIImageJPEGRepresentation(imgSmall, 0.3); NSData *imgIndexData = UIImageJPEGRepresentation(imgIndex, 0.3); NSInteger imgSize_Big = imgBigData.length; NSInteger imgSize_Small = imgSmallData.length; for (int i=0; i<3; i++) { [_houseImageCache storeImage:imgBig imageData:imgBigData forKey:imagePathBig toDisk:YES]; i++; [_houseImageCache storeImage:imgSmall imageData:imgSmallData forKey:imagePathSmall toDisk:YES]; i++; [_houseImageCache storeImage:imgIndex imageData:imgIndexData forKey:imagePathIndex toDisk:YES]; } isSuccess = [self saveHouseImagesWith:PKHouseImageLite ImgPath:imagePathDir ImgType:imgType ImgSizeBig:imgSize_Big ImgSizeSmaill:imgSize_Small]; [self houseimageNumber:nil]; if (isSuccess) { [ProgressHUD showSuccess:@"添加成功"]; [picker dismissViewControllerAnimated:YES completion:nil]; [self reloadSubviews]; } } }
-(void)image:(UIImage*)image didFinishSavingWithError:(NSError*)error contextInfo:(void*)contextInfo{ if (!error) { NSLog(@"保存有误"); } else { NSLog(@"错误提示%@", error); } } -(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker { [self dismissViewControllerAnimated:YES completion:nil]; }
9.判断是否支持拍照和相册
-(BOOL)shouldPhoto { BOOL agree=NO; AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo]; if(authStatus == AVAuthorizationStatusAuthorized||authStatus == AVAuthorizationStatusNotDetermined) { agree=YES; }else { agree=NO; } return agree; } -(BOOL)shouldImage { BOOL agree=NO; ALAuthorizationStatus author = [ALAssetsLibrary authorizationStatus]; if(author == ALAuthorizationStatusAuthorized||author == ALAuthorizationStatusNotDetermined) { agree=YES; }else { agree=NO; } return agree; }
10.上传图片
+(void)httpUploadHeadImage:(NSString *)Actio WithParam:(NSDictionary *)param success:(void(^)(id ResponseObject))Success Failure:(void (^)(id ResponseObject))Failure { NSMutableDictionary *mDict = [NSMutableDictionary dictionary]; if (param!=nil) { [mDict setDictionary:param]; } AFHTTPRequestOperationManager * manager =[AFHTTPRequestOperationManager manager]; manager.requestSerializer = [AFHTTPRequestSerializer serializer]; manager.responseSerializer = [AFHTTPResponseSerializer serializer]; [manager POST:Actio parameters:NULL constructingBodyWithBlock:^(id<AFMultipartFormData> formData) { [formData appendPartWithFormData:[[NSString stringWithString:[mDict objectForKey:@"PKUser"]] dataUsingEncoding:NSUTF8StringEncoding] name:@"PKUser"]; [formData appendPartWithFormData:[[NSString stringWithString:[mDict objectForKey:@"relPath"]] dataUsingEncoding:NSUTF8StringEncoding] name:@"relPath"]; NSData * data=[NSData dataWithContentsOfFile:[mDict objectForKey:@"HeadBig"]]; [formData appendPartWithFileData:data name:@"big" fileName:[mDict objectForKey:@"HadebigName"] mimeType: @"Image/jpep"]; NSData * data1=[NSData dataWithContentsOfFile:[mDict objectForKey:@"Headsmall"]]; [formData appendPartWithFileData:data1 name:@"small" fileName:[mDict objectForKey:@"HadesmallName"] mimeType: @"Image/png"]; } success:^(AFHTTPRequestOperation *operation, id responseObject) { NSData * responseData = responseObject; NSString * responseStr = [[NSString alloc]initWithData:responseData encoding:NSUTF8StringEncoding]; Success(responseStr); } failure:^(AFHTTPRequestOperation *operation, NSError *error) { }]; }
11.设置导航栏属性
[self.navigationController.navigationBar setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: [UIColor whiteColor], UITextAttributeTextColor, [UIColor colorWithRed:0 green:0.7 blue:0.8 alpha:1], UITextAttributeTextShadowColor, [NSValue valueWithUIOffset:UIOffsetMake(0, 0)], UITextAttributeTextShadowOffset, [UIFont boldSystemFontOfSize:20], UITextAttributeFont, nil]];
12.设置分割线与距离（普通的tableView分割线短一些）
if ([self.tableView respondsToSelector:@selector(setSeparatorInset:)]) { [self.tableView setSeparatorInset:UIEdgeInsetsMake(0,0,0,0)]; } if ([self.tableView respondsToSelector:@selector(setLayoutMargins:)]) { [self.tableView setLayoutMargins:UIEdgeInsetsMake(0,0,0,0)]; }
13.绘制图片
-(UIImage *)imageWithColor:(UIColor *)color size:(CGSize)size { CGRect rect =CGRectMake(0, 0, size.width, size.height); UIGraphicsBeginImageContext(rect.size); CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSetFillColorWithColor(context, [color CGColor]); CGContextFillRect(context, rect); UIImage * image = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return image; }
14.NSJSONReadingMutableContainers：返回可变容器，NSMutableDictionary或NSMutableArray。
NSJSONReadingMutableLeaves：返回的JSON对象中字符串的值为NSMutableString。
NSJSONReadingAllowFragments：允许JSON字符串最外层既不是NSArray也不是NSDictionary，但必须是有效的JSON Fragment。例如使用这个选项可以解析 @“123” 这样的字符串。
15.摇晃手机结束触发方法（系统声音与震动服务）
- (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event { if (motion==UIEventSubtypeMotionShake) { [ProgressHUD show:LONDING]; [self updateMyLocation]; } }
SystemSoundID soundID; NSString *strSoundFile = [[NSBundle mainBundle] pathForResource:@"alertsound" ofType:@"wav"]; AudioServicesCreateSystemSoundID((__bridge CFURLRef)[NSURL fileURLWithPath:strSoundFile],&soundID); AudioServicesPlaySystemSound(soundID);
//公司代码 crash=kSystemSoundID_Vibrate; NSURL * shakeUrl = [[NSBundle mainBundle]URLForResource:@"shake_sound_male" withExtension:@"wav"]; AudioServicesCreateSystemSoundID((__bridge CFURLRef)shakeUrl, &crash);
16.AFNetWorking检测网络状态代码
+(NSInteger)NetWorkType { if (([[Reachability reachabilityForLocalWiFi] currentReachabilityStatus] != NotReachable)) { return 0; } else if (([[Reachability reachabilityForInternetConnection] currentReachabilityStatus] != NotReachable)) { return 1; } else { return -1; } }
17.百度地图开启定位
_locService = [[BMKLocationService alloc]init]; _locService.delegate = self; [_locService startUserLocationService];
18.点击TextField以外的地方收回键盘
//先定义一个UIControl类型的对象，在上面可以添加触发事件，令SEL实践为回收键盘的方法,最后将UIControl的实例加到当前View上。 UIControl *m_control = [[UIControl alloc] initWithFrame:CGRectMake(0, 0, 320, 480)]; [m_control addTarget:self action:@selector(keyboardReturn) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:m_control]; - (void) keyboardReturn { [aTextField resignFirstResponder]; }
19.tableView右侧索引
//viewDidLoad _indexArr=[NSArray arrayWithObjects:@" ",@" ",@" ",@"A",@"B",@"C",@"D",@"E",@"F",@"G",@"H",@"I",@"J",@"K",@"L",@"M",@"N",@"O",@"P",@"Q",@"R",@"S",@"T",@"U",@"V",@"W",@"X",@"Y",@"Z",@"#",nil]; - (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView { if (issearch) { return nil; }else { return _indexArr; // return self.firstCharArray; } }
20.打开系统设置的方法
NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString]; if ([[UIApplication sharedApplication] canOpenURL:url]) { [[UIApplication sharedApplication] openURL:url]; }
21.取消第一响应者的方法
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView { [_bar resignFirstResponder]; }
22.iOS生成唯一标识方法（使用CFUUIDRef 和CFStringRef）
+ (NSString *)GetUUID { CFUUIDRef theUUID = CFUUIDCreate(NULL); CFStringRef string = CFUUIDCreateString(NULL, theUUID); CFRelease(theUUID); return (__bridge_transfer NSString *)string ; }
23.UIView动画
[UIView beginAnimations:nil context:nil]; if (_showLocalEmotion) { _toolBar.frame=CGRectMake(0, ScreenHeight-216-44-vhei, ScreenWidth, 44); self.tableView.frame=CGRectMake(0, 0, ScreenWidth, ScreenHeight-216-44-vhei); }else { _toolBar.frame = toolKeyboardDown; self.tableView.frame = tableKeyboardDown; } [UIView setAnimationDuration:0.7]; [UIView commitAnimations];
24.UIAlertView阻断键盘隐藏的解决办法
//键盘收缩动画时长为0.25秒,只需让代码延迟0.25秒执行 dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{ //执行代码 });