1.常用控件方法的封装：
#import
#import
@interfaceMyUtil :NSObject
//创建标签的方法
+ (UILabel*)createLabelFrame:(CGRect)frame text:(NSString*)text textColor:(UIColor*)textColor textAlignment:(NSTextAlignment)textAlignment numberOfLines:(NSInteger)numberOfLines;
+ (UILabel*)createLabelFrame:(CGRect)frame text:(NSString*)text color:(UIColor*)textColor;
//创建按钮的方法
+ (UIButton*)createBtnFrame:(CGRect)frame title:(NSString*)title bgImageName:(NSString*)bgImageName target:(id)target action:(SEL)action;
//创建图片视图的方法
+ (UIImageView*)createImageViewFrame:(CGRect)frame imageName:(NSString*)imageName;
//类型的英文转化成中文
+ (NSString*)transferCateName:(NSString*)name;
@end
方法的实现：
#import"MyUtil.h"
@implementationMyUtil
+(UILabel*)createLabelFrame:(CGRect)frame text:(NSString*)text textColor:(UIColor*)textColor textAlignment:(NSTextAlignment)textAlignment numberOfLines:(NSInteger)numberOfLines
{
UILabel*label = [[UILabelalloc]initWithFrame:frame];
label.text= text;
label.textAlignment= textAlignment;
label.textColor= textColor;
label.numberOfLines= numberOfLines;
returnlabel;
}
+(UILabel*)createLabelFrame:(CGRect)frame text:(NSString*)text color:(UIColor*)textColor
{
return[selfcreateLabelFrame:frametext:texttextColor:textColortextAlignment:NSTextAlignmentCenternumberOfLines:1];
}
+(UIButton*)createBtnFrame:(CGRect)frame title:(NSString*)title bgImageName:(NSString*)bgImageName target:(id)target action:(SEL)action
{
UIButton*btn = [UIButtonbuttonWithType:UIButtonTypeCustom];
btn.frame= frame;
[btnsetTitle:titleforState:UIControlStateNormal];
[btnsetTitleColor:[UIColorblackColor]forState:UIControlStateNormal];
[btnsetBackgroundImage:[UIImageimageNamed:bgImageName]forState:UIControlStateNormal];
[btnaddTarget:targetaction:actionforControlEvents:UIControlEventTouchUpInside];
returnbtn;
}
+(UIImageView*)createImageViewFrame:(CGRect)frame imageName:(NSString*)imageName
{
UIImageView*imageView = [[UIImageViewalloc]initWithFrame:frame];
imageView.image= [UIImageimageNamed:imageName];
returnimageView;
}
+ (NSString*)transferCateName:(NSString*)name
{
if([nameisEqualToString:@"Business"]) {
return@"商业";
}elseif([nameisEqualToString:@"Weather"]) {
return@"天气";
}elseif([nameisEqualToString:@"Tool"]) {
return@"工具";
}elseif([nameisEqualToString:@"Travel"]) {
return@"旅行";
}elseif([nameisEqualToString:@"Sports"]) {
return@"体育";
}elseif([nameisEqualToString:@"Social"]) {
return@"社交";
}elseif([nameisEqualToString:@"Refer"]) {
return@"参考";
}elseif([nameisEqualToString:@"Ability"]) {
return@"效率";
}elseif([nameisEqualToString:@"Photography"]) {
return@"摄影";
}elseif([nameisEqualToString:@"News"]) {
return@"新闻";
}elseif([nameisEqualToString:@"Gps"]) {
return@"导航";
}elseif([nameisEqualToString:@"Music"]) {
return@"音乐";
}elseif([nameisEqualToString:@"Life"]) {
return@"生活";
}elseif([nameisEqualToString:@"Health"]) {
return@"健康";
}elseif([nameisEqualToString:@"Finance"]) {
return@"财务";
}elseif([nameisEqualToString:@"Pastime"]) {
return@"娱乐";
}elseif([nameisEqualToString:@"Education"]) {
return@"教育";
}elseif([nameisEqualToString:@"Book"]) {
return@"书籍";
}elseif([nameisEqualToString:@"Medical"]) {
return@"医疗";
}elseif([nameisEqualToString:@"Catalogs"]) {
return@"商品指南";
}elseif([nameisEqualToString:@"FoodDrink"]) {
return@"美食";
}elseif([nameisEqualToString:@"Game"]) {
return@"游戏";
}elseif([nameisEqualToString:@"All"]){
return@"全部";
}
returnnil;
}
@end
2.裁剪图片方法的封装：
- (UIImage*)clipImage:(UIImage*)bigImage inRect:(CGRect)rect
{
CGImageRefimageRef =CGImageCreateWithImageInRect(bigImage.CGImage, rect);
UIImage*image = [UIImageimageWithCGImage:imageRef];
returnimage;
}
实现方法：
//创建图片显示
CGRectframe =CGRectMake(100*j,100*i,100,100);
UIImage*tmpImage = [selfclipImage:imageinRect:frame];
3.封装的下载方法：
#import
@classMyDownloader;
@protocolMyDownloaderDelegate
- (void)downloadFail:(MyDownloader*)downloader error:(NSError*)error;
- (void)downloadFinish:(MyDownloader*)downloader;
@end
@interfaceMyDownloader :NSObject
- (void)downloadWithURLString:(NSString*)urlString;
@property(nonatomic,readonly)NSData*receiveData;
@property(nonatomic,assign)NSIntegertype;
@property(nonatomic,weak)id delegate;
@end
实现方法：
#import"MyDownloader.h"
@implementationMyDownloader
{
NSURLConnection*_conn;
NSMutableData*_receiveData;
}
-(instancetype)init
{
self= [superinit];
if(self) {
_receiveData= [NSMutableDatadata];
}
returnself;
}
-(void)downloadWithURLString:(NSString*)urlString
{
NSURL*url = [NSURLURLWithString:urlString];
NSURLRequest*request = [NSURLRequestrequestWithURL:url];
_conn= [NSURLConnectionconnectionWithRequest:requestdelegate:self];
}
#pragma mark - NSURLConnection代理
-(void)connection:(NSURLConnection*)connection didFailWithError:(NSError*)error
{
[self.delegatedownloadFail:selferror:error];
}
-(void)connection:(NSURLConnection*)connection didReceiveResponse:(NSURLResponse*)response
{
[_receiveDatasetLength:0];
}
-(void)connection:(NSURLConnection*)connection didReceiveData:(NSData*)data
{
[_receiveDataappendData:data];
}
-(void)connectionDidFinishLoading:(NSURLConnection*)connection
{
[self.delegatedownloadFinish:self];
}
4.block封装的下载方法：
#import
typedefvoid(^FINISHBLOCK)(NSData*receiveData);
typedefvoid(^FAILBLOCK)(NSError*error);
@interfaceMyDownloader :NSObject
{
NSMutableData*_receiveData;
NSURLConnection*_conn;
//下载成功结束
//void (^_myFinishBlock)(NSData *data);
FINISHBLOCK_myFinishBlock;
//下载失败时调用
//void (^_myFailBlock)(NSError *error);
FAILBLOCK_myFailBlock;
}
//下载的方法
/*
@param urlString:下载的字符串链接
@param finishBlock:下载成功时调用的代码块
@param failBlock:下载失败时调用的代码块
*/
/*
- (void)downloadWithURLString:(NSString *)urlString
finish:(void (^) (NSData *receiveData))finishBlock
fail:(void (^)(NSError *error))failBlock;
*/
- (void)downloadWithURLString:(NSString*)urlString
finish:(FINISHBLOCK)finishBlock
fail:(FAILBLOCK)failBlock;
@end
实现方法：
#import"MyDownloader.h"
@implementationMyDownloader
-(instancetype)init
{
if(self= [superinit]) {
_receiveData= [NSMutableDatadata];
}
returnself;
}
-(void)downloadWithURLString:(NSString*)urlString finish:(void(^)(NSData*))finishBlock fail:(void(^)(NSError*))failBlock
{
if(_myFinishBlock!= finishBlock) {
_myFinishBlock= finishBlock;
}
if(_myFailBlock!= failBlock) {
_myFailBlock= failBlock;
}
//下载
NSURL*url = [NSURLURLWithString:urlString];
NSURLRequest*request = [NSURLRequestrequestWithURL:url];
_conn= [NSURLConnectionconnectionWithRequest:requestdelegate:self];
}
#pragma mark - NSURLConnection代理
-(void)connection:(NSURLConnection*)connection didFailWithError:(NSError*)error
{
if(_myFailBlock) {
_myFailBlock(error);
}
}
-(void)connection:(NSURLConnection*)connection didReceiveResponse:(NSURLResponse*)response
{
[_receiveDatasetLength:0];
}
-(void)connection:(NSURLConnection*)connection didReceiveData:(NSData*)data
{
[_receiveDataappendData:data];
}
-(void)connectionDidFinishLoading:(NSURLConnection*)connection
{
if(_myFinishBlock) {
_myFinishBlock(_receiveData);
}
}
@end
5.数据库的封装：
#import
#import"UserModel.h"
@interfaceDBManager :NSObject
+ (DBManager*)sharedManager;
//增
- (void)addUserModel:(UserModel*)model;
//删
- (void)deleteUserWithUserId:(int)userId;
//改
//根据userId修改数据(userId是不变化的)
- (void)updateUserModel:(UserModel*)model userId:(int)userId;
//查
- (NSArray*)searchAllUsers;
@end
实现方法：
#import"DBManager.h"
#import"FMDatabase.h"
/*
使用数据库时
1.导入fmdatabase第三方库
2.导入系统libsqlite3.dylib
3.fmdatabase不支持ARC，五个.m文件添加-fno-objc-arc
*/
@implementationDBManager
{
//数据库文件的关联对象
FMDatabase*_dataBase;
}
+(DBManager*)sharedManager
{
staticDBManager*manager =nil;
@synchronized(self){
if(manager ==nil) {
manager = [[DBManageralloc]init];
}
}
returnmanager;
}
-(instancetype)init
{
if(self= [superinit]) {
//创建数据库文件操作对象
[selfcreateDatabase];
}
returnself;
}
- (void)createDatabase
{
//数据库文件的路径
NSString*path = [NSHomeDirectory()stringByAppendingPathComponent:@"Documents/user.sqlite"];
NSLog(@"%@",path);
//1、初始化FMDataBase对象
_dataBase= [[FMDatabasealloc]initWithPath:path];
//2、打开数据库
BOOLisOpen = [_dataBaseopen];
if(isOpen) {
//3、创建表格
//NSData -> blob
//int -> integer
//NSString -> varchar(255)
//if not exists:如果表格不存在，创建表格
//存在就不创建
//主键:primary key,值唯一，不能重复
//主键自动增长:autoincrement
NSString*createSql =@"create table if not exists user (userId integer primary key autoincrement, userName varchar(255), age integer,headImage blob)";
BOOLret = [_dataBaseexecuteUpdate:createSql];
if(ret) {
NSLog(@"表格创建成功");
}else{
NSLog(@"%@",_dataBase.lastErrorMessage);
}
}else{
NSLog(@"数据库打开失败");
}
}
//判断是否存在
- (BOOL)isExists:(NSString*)userName
{
NSString*sql =@"select * from user where userName = ?";
FMResultSet*rs = [_dataBaseexecuteQuery:sql, userName];
if([rsnext]) {
returnYES;
}
returnNO;
}
//增加一条记录
-(void)addUserModel:(UserModel*)model
{
//判断用户名是否存在
BOOLisExists = [selfisExists:model.userName];
if(isExists) {
NSLog(@"用户名已存在");
return;
}
//?是占位符，表示要传一个值
NSString*insertSql =@"insert into user (userName, age, headImage) values (?, ? ,?)";
//图片转换成二进制
NSData*imageData =UIImagePNGRepresentation(model.headImage);
BOOLret = [_dataBaseexecuteUpdate:insertSql,model.userName,@(model.age), imageData];
if(!ret) {
NSLog(@"%@",_dataBase.lastErrorMessage);
}
}
//查询
-(NSArray*)searchAllUsers
{
NSString*selectSql =@"select * from user";
FMResultSet*rs = [_dataBaseexecuteQuery:selectSql];
NSMutableArray*array = [NSMutableArrayarray];
while([rsnext]) {
UserModel*model = [[UserModelalloc]init];
model.userId= [rsintForColumn:@"userId"];
model.userName= [rsstringForColumn:@"userName"];
model.age= [rsintForColumn:@"age"];
NSData*data = [rsdataForColumn:@"headImage"];
model.headImage= [UIImageimageWithData:data];
[arrayaddObject:model];
}
returnarray;
}
//删除
-(void)deleteUserWithUserId:(int)userId
{
NSString*deleteSql =@"delete from user where userId=?";
BOOLret = [_dataBaseexecuteUpdate:deleteSql,@(userId)];
if(!ret) {
NSLog(@"%@",_dataBase.lastErrorMessage);
}
}
//修改
-(void)updateUserModel:(UserModel*)model userId:(int)userId
{
NSString*sql =@"update user set userName=?, age=?, headImage=? where userId=?";
//图片转换成二进制数据
NSData*data =UIImagePNGRepresentation(model.headImage);
BOOLret = [_dataBaseexecuteUpdate:sql, model.userName,@(model.age), data,@(userId)];
if(!ret) {
NSLog(@"%@",_dataBase.lastErrorMessage);
}
}
@end
6.UIAlertController的封装方法：
- (void)createAlertViewText:(NSString *)text
{
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"温馨提示" message:text preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
}];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
}];
[alertController addAction:okAction];
[alertController addAction:cancelAction];
[self presentViewController:alertController animated:YES completion:nil];
}
实现方法：
- (void)searchBtnClick
{
[_licenseNumber resignFirstResponder];
_dp.hidden = YES;
_lineView.hidden = YES;
_endBtn.hidden = YES;
_showOrHidden = YES;
NSMutableArray *licens = ((AppDelegate *)[UIApplication sharedApplication].delegate).licen;
for (int i=0; i
if ([_licenseNumber.text isEqualToString: licens[i]]) {
[self createData];
}
}
if ([_licenseNumber.text isEqual: @""])
{
[self createAlertViewText:@"车牌号不能为空"];
}
if ([_dateBtn.titleLabel.text isEqual: @"查询日期"])
{
[self createAlertViewText:@"请选择日期"];
}
}