1.设置图片透明
//图片透明
- (UIImage *)imageWithColor:(UIColor *)color {
CGRect rect = CGRectMake(0.0f,0.0f, 1.0f,1.0f);
UIGraphicsBeginImageContext(rect.size);
CGContextRef context =UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, [color CGColor]);
CGContextFillRect(context, rect);
UIImage *image =UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
用: friendbg.image = [self imageWithColor:[UIColor colorWithRed:0 green:0 blue:0 alpha:0.4]];;
2.创建 nav 防止跳转失败
在AppDelegate.m的- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 方法里写
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];
MainViewController *main = [[MainViewController alloc]init];
UINavigationController*nav = [[UINavigationController alloc]initWithRootViewController:main];
self.window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
//创建并初始化UITabBarController
self.window.rootViewController = nav;
nav.navigationBarHidden = YES;
[self.window makeKeyAndVisible];
3.XIB TableviewCell 创建使用
cell.h 中+(instancetype)xibTableViewCell;
cell.m 中+(instancetype)xibTableViewCell {
//在类方法中加载xib文件,注意:loadNibNamed:owner:options:这个方法返回的是NSArray,所以在后面加上firstObject或者lastObject或者[0]都可以;因为我们的Xib文件中,只有一个cell
return [[[NSBundle mainBundle] loadNibNamed:@"treasureCell" owner:nil options:nil] lastObject];
}
控制器.m中- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 方法中
static NSString *cellIndentifier = @"treasureCell";//这里的cellID就是cell的xib对应的名称
treasureCell *cell = (treasureCell *)[tableView dequeueReusableCellWithIdentifier:cellIndentifier];
if(nil == cell) {
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:cellIndentifier owner:self options:nil];
cell = [nib objectAtIndex:0]; //中间宽线
cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
return cell;
PCH 中使用
// 手机版本控制
#define SCREEN_MAX_LENGTH (MAX(SCREEN_WIDTH, SCREEN_HEIGTH))
#define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
#define IS_IPHONE_5 (IS_IPHONE && SCREEN_MAX_LENGTH == 568.0)
#define IS_IPHONE_6 (IS_IPHONE && SCREEN_MAX_LENGTH == 667.0)
#define IS_IPHONE_6p (IS_IPHONE && SCREEN_MAX_LENGTH == 736.0)
#define ceshiURL @"http://192.168.2.84:5000"//利好利空测试服务器
//判断是不是IPhoneX
#define isPhoneX ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1125, 2436), [[UIScreen mainScreen] currentMode].size) : NO)
// NSUserDefaults
#define UserSet(obj, key) [[NSUserDefaults standardUserDefaults] setObject:obj forKey:key]
#define UserObj(key) [[NSUserDefaults standardUserDefaults] objectForKey:key]
#define UserSave [[NSUserDefaults standardUserDefaults] synchronize]
// 登录状态
#define IsLogin [[[NSUserDefaults standardUserDefaults] objectForKey:@"UseIsLogin"] isEqualToString:@"1"] ? 1 : 0
//获取屏幕宽高
#define KScreenWidth [[UIScreen mainScreen]bounds].size.width
#define KScreenHeight [[UIScreen mainScreen]bounds].size.height
#define kScreen_Bounds [UIScreen mainScreen].bounds
#define kScreenBg [UIColor colorWithRed:0 green:0 blue:0 alpha:0.2];
//颜色
#define BGColor UICOLOR_HEX(0xfff8f8f8)//主背景颜色 (灰色)
#define MainColor UICOLOR_HEX(0xfffab615)//主颜色 (黄色)
#define TitleColor UICOLOR_HEX(0xff333333)//字颜色 (灰黑色)
#define MainWrightColor UICOLOR_HEX(0xffFFFFFF)//主白色颜色 (白色)
#define MainBlueColor UICOLOR_HEX(0xff08c9e6)//主蓝色颜色 (蓝色)
#define MainBlColor UICOLOR_HEX(0xff008fd1)//背景浅蓝色
#define MainTextColor UICOLOR_HEX(0xff00faeb)//文字淡蓝色
//获取16进制32位色的UIColor对象
#define UICOLOR_HEX(x) \
[UIColor \
colorWithRed:(float)((float)((x>>16)&0xFF)/0xFF) \
green:(float)((float)((x>>8)&0xFF)/0xFF) \
blue:(float)((float)(x&0xFF)/(float)0xFF) \
alpha:(float)((float)((x>>24)&0xFF)/(float)0xFF) \
]
改变状态栏文字颜色
////设置状态栏字体提
- (UIStatusBarStyle)preferredStatusBarStyle
{
return UIStatusBarStyleLightContent;//为白色
return UIStatusBarStyleDefault;//黑色
}
