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];
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4.发短信方法
4.1openURL
[[UIApplication sharedApplication] openURL:@"sms:12345678"];
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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];
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5.复制内容到剪切板
UIPasteboard *pasteboard = [UIPasteboard generalPasteboard]; pasteboard.string = ResponseObj;
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6。iOS字符创中去除特殊字符串
NSInteger leftLength=[[leftStr stringByTrimmingCharactersInSet:[NSCharacterSet decimalDigitCharacterSet]] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]].length;
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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--------------
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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];}
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#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];} }
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-(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];}} }
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-(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]; }
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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; }
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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){}]; }
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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]];
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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)];}
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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;}
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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];} }
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SystemSoundID soundID;NSString *strSoundFile = [[NSBundle mainBundle] pathForResource:@"alertsound" ofType:@"wav"];AudioServicesCreateSystemSoundID((__bridge CFURLRef)[NSURL fileURLWithPath:strSoundFile],&soundID);AudioServicesPlaySystemSound(soundID);
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//公司代码 crash=kSystemSoundID_Vibrate;NSURL * shakeUrl = [[NSBundle mainBundle]URLForResource:@"shake_sound_male" withExtension:@"wav"];AudioServicesCreateSystemSoundID((__bridge CFURLRef)shakeUrl, &crash);
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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;}}
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17.百度地图开启定位
_locService = [[BMKLocationService alloc]init]; _locService.delegate = self; [_locService startUserLocationService];
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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]; }
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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; } }
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20.打开系统设置的方法
NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString]; if ([[UIApplication sharedApplication] canOpenURL:url]) {[[UIApplication sharedApplication] openURL:url]; }
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21.取消第一响应者的方法
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView {[_bar resignFirstResponder]; }
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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 ; }
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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];
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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});
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转载于:https://www.cnblogs.com/liaods/p/4832673.html