一,计算 label 宽度
1 - (CGFloat)getCurExpLabelBgWidth:(NSString *)str
2 {
3 str = ISSTRING(str) ? str : @"0";
4 UILabel *label = [[UILabel alloc] init];
5 CGFloat fontSize = 12 * kBigScreenViewWidthRate;
6 label.font = [[PTVConfig instance] normalFont:fontSize];
7 label.text = str;
8 CGRect rect = [label textRectForBounds:CGRectMake(0, 0, MAXFLOAT, fontSize ) limitedToNumberOfLines:1];
9 CGFloat length = rect.size.width;
10 return length;
11 }
二,判断字符串中是否包含英文字母
1 - (BOOL)isStringContainNumberWith:(NSString *)str {
2 NSRegularExpression *numberRegular = [NSRegularExpression regularExpressionWithPattern:@"[A-Za-z]" options:NSRegularExpressionCaseInsensitive error:nil];
3 NSInteger count = [numberRegular numberOfMatchesInString:str options:NSMatchingReportProgress range:NSMakeRange(0, str.length)];
4 //count是str中包含[A-Za-z]数字的个数，只要count>0，说明str中包含数字
5 if (count > 0) {
6 return YES;
7 }
8 return NO;
9 }
三,从横屏跳转到竖屏
1 if (!([PTVConfig instance].orotatemask == UIInterfaceOrientationMaskPortrait))
2 {
3
4 [PTVConfig instance].orotatemask = UIInterfaceOrientationMaskPortrait;
5 [[PTVConfig instance] setOrientation:UIDeviceOrientationPortrait];
6 [UIViewController attemptRotationToDeviceOrientation];
7 }
8 [GETVIEWCONTROLLERMGR pushLoginController:self.parentVc.navigationController];
四,带秒表的定时器
1 - (void)startPkTimer
2 {
3 _percens = 100;
4 [self removeCountTimer];
5 _timer = [NSTimer scheduledTimerWithTimeInterval:0.05 target:self selector:@selector(_timerAction) userInfo:nil repeats:YES];
6 [[NSRunLoop currentRunLoop] addTimer:_timer forMode:NSRunLoopCommonModes];
7 }
8
9 - (void)_timerAction
10 {
11 _percens -= 5 ;
12 if(_percens <= 0){
13 _countWownTimer -= 1;
14 _percens = 100;
15 }
16 NSLog(@"lz465350===>%li---%li",(long)_countWownTimer,(long)_percens);
17 if (_countWownTimer <= -1 ) {
18 dispatch_async(dispatch_get_main_queue(), ^{
19 if (self.timerFinished)
20 {
21 self.timerFinished();
22 }
23 [self removeCountTimer];
24 });
25 return;
26 } else {
27 NSString *text = [self getTimerText:_countWownTimer percens:_percens];
28 dispatch_async(dispatch_get_main_queue(), ^{
29 self.text = text;
30 });
31 }
32 }
