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一、关于四个容易混淆属性的对比说明
1. textAligment : 文字的水平方向的对齐方式
(1) 取值
NSTextAlignmentLeft = 0, // 左对齐
NSTextAlignmentCenter = 1, // 居中对齐
NSTextAlignmentRight = 2, // 右对齐
(2) ...
@interface MJScrollView () {
CGPoint _lastOffset;
}
@end
@implementation MJScrollView
#pragma mark - 生命周期方法
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
[self initial];
}
return self;
}
- (id)init {
if (self = [super init]) {
...
#pragma mark - 生命周期方法
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
[self initial];
}
return self;
}
- (id)init {
if (self = [super init]) {
[self initial];
}
return self;
}
#pragma mark 当MJScrollView从xib中创建完毕后会调用这个方法 ...
+ (void)showError:(NSString *)error toView:(UIView *)view{
// 快速显示一个提示信息
MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:view animated:YES];
hud.labelText = error;
// 设置图片
hud.customView = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"alert_failed_icon.png" ...
1. 如果只是想把当前页面的状态栏隐藏的话,直接用下面的代码就可以了
[[UIApplication sharedApplication] setStatusBarHidden:TRUE];
2. 如果是想把整个应用程序的状态栏都隐藏掉,操作如下:
在info.plist上添加一项:Status bar is initially hidden,value为YES;
完后在MainAppDelegate.mm的- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptio ...
作为iOS 开发者,常遇到一个诡异的上传问题。 好不容易上传了一个app, 第一时间收到的邮件不是 ready for sale ,而是 “The PNG icon file Icon@2x.png appears to be corrupt”. 内容如下:
'Dear developer,
We have discovered one or more issues with your recent binary submission for "悠悠电台". Before your app can be reviewed, the following issues mus ...
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor=[UIColor whiteColor];
UIView * viewTest=[[UIView alloc] initWithFrame:CGRectMake(50, 50, 200, 200)];
viewTest.backgroundCo ...
app尺寸,去掉状态栏
CGRect r = [ UIScreen mainScreen ].applicationFrame;
r=0,20,320,460
屏幕尺寸
CGRect rx = [ UIScreen mainScreen ].bounds;
r=0,0,320,480
状态栏尺寸
CGRect rect; rect = [[UIApplication sharedApplication] statusBarFrame];
iphone中获取屏幕分辨率的方法
CGRect rect = [[UIScreen mainScreen] bounds];
CGSize size = re ...
@implementation HDHostSleep
- (instancetype)init {
self = [super init];
if (self) {
NSArray *array = [[NSBundle mainBundle] loadNibNamed:@"HDHostSleep" owner:self options:nil];
self = array.lastObject;
}
return self;
}
- (void)showInView:(UIView *)view{
...