iOS中怎么實(shí)現(xiàn)文字水平無(wú)間斷滾動(dòng)效果，很多新手對(duì)此不是很清楚，為了幫助大家解決這個(gè)難題，下面小編將為大家詳細(xì)講解，有這方面需求的人可以來(lái)學(xué)習(xí)下，希望你能有所收獲。

我們提供的服務(wù)有：網(wǎng)站制作、成都做網(wǎng)站、微信公眾號(hào)開(kāi)發(fā)、網(wǎng)站優(yōu)化、網(wǎng)站認(rèn)證、潛江ssl等。為成百上千企事業(yè)單位解決了網(wǎng)站和推廣的問(wèn)題。提供周到的售前咨詢和貼心的售后服務(wù)，是有科學(xué)管理、有技術(shù)的潛江網(wǎng)站制作公司

ViewController.h

#import <UIKit/UIKit.h>@interface ViewController : UIViewController{  NSTimer      *timer;  UIScrollView   *scrollViewText;}@property (nonatomic ,strong) NSArray *arrData;@end

ViewController.m

//// ViewController.m// 滾動(dòng)//#import "ViewController.h"#pragma mark - Class define variable#define K_MAIN_VIEW_SCROLL_HEIGHT 80.0f#define K_MAIN_VIEW_SCROLL_TEXT_TAG 300#define K_MAIN_VIEW_TEME_INTERVAL 0.35        //計(jì)時(shí)器間隔時(shí)間(單位秒)#define K_MAIN_VIEW_SCROLLER_SPACE 20.0f       //每次移動(dòng)的距離#define K_MAIN_VIEW_SCROLLER_LABLE_WIDTH   18.0f  //單個(gè)字符寬度(與你設(shè)置的字體大小一致)#define K_MAIN_VIEW_SCROLLER_LABLE_MARGIN  20.0f  //前后間隔距離#define K_MAIN_VIEW_SCROLLER_SLEEP_INTERVAL 1    //停留時(shí)間@interface ViewController ()@end@implementation ViewController#pragma mark - Class property@synthesize arrData;- (void)viewDidLoad {  [super viewDidLoad];  [self initView];}- (void)didReceiveMemoryWarning {  [super didReceiveMemoryWarning];  // Dispose of any resources that can be recreated.}#pragma mark - Custom method//初始化數(shù)據(jù)-(void) initView{  if (!self.arrData) {    self.arrData = @[             @{               @"newsId"  :@"201507070942261935",               @"newsImg" :@"/tupian/20230522/404.html               @"newsTitle":@"三大理由歐元任性抗跌，歐元區(qū)峰會(huì)將為希臘定調(diào)"             },             @{               @"newsId"  :@"201507070929021220",               @"newsImg"  :@"/tupian/20230522/404.html               @"newsTitle" :@"歐盟峰會(huì)或現(xiàn)希臘轉(zhuǎn)機(jī)，黃金打響1162保衛(wèi)戰(zhàn)"             },             @{               @"newsId"  :@"201507070656471857",               @"newsImg"  :@"/tupian/20230522/404.html               @"newsTitle" :@"希臘困局歐元不怕，油價(jià)服軟暴跌8%"             }           ];  }  //文字滾動(dòng)  [self initScrollText];  //開(kāi)啟滾動(dòng)  [self startScroll];}//文字滾動(dòng)初始化-(void) initScrollText{  //獲取滾動(dòng)條  scrollViewText = (UIScrollView *)[self.view viewWithTag:K_MAIN_VIEW_SCROLL_TEXT_TAG];  if(!scrollViewText){    scrollViewText = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 80, self.view.frame.size.width, K_MAIN_VIEW_SCROLL_HEIGHT)];    scrollViewText.showsHorizontalScrollIndicator = NO;  //隱藏水平滾動(dòng)條    scrollViewText.showsVerticalScrollIndicator = NO;   //隱藏垂直滾動(dòng)條    scrollViewText.scrollEnabled = NO;          //禁用手動(dòng)滑動(dòng)    //橫豎屏自適應(yīng)    scrollViewText.autoresizingMask = UIViewAutoresizingFlexibleWidth;    scrollViewText.tag = K_MAIN_VIEW_SCROLL_TEXT_TAG;    [scrollViewText setBackgroundColor:[UIColor grayColor]];    //給滾動(dòng)視圖添加事件    UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(scrollerViewClick:)];    [scrollViewText addGestureRecognizer:tapGesture];    //添加到當(dāng)前視圖    [self.view addSubview:scrollViewText];  }else{    //清除子控件    for (UIView *view in [scrollViewText subviews]) {      [view removeFromSuperview];    }  }  if (self.arrData) {    CGFloat offsetX = 0 ,i = 0, h = 30;    //設(shè)置滾動(dòng)文字    UIButton *btnText = nil;    NSString *strTitle = [[NSString alloc] init];    for (NSDictionary *dicTemp in self.arrData) {      strTitle = dicTemp[@"newsTitle"];      btnText = [UIButton buttonWithType:UIButtonTypeCustom];      [btnText setFrame:CGRectMake([self getTitleLeft:i],                     (K_MAIN_VIEW_SCROLL_HEIGHT - h) / 2,                     strTitle.length * K_MAIN_VIEW_SCROLLER_LABLE_WIDTH,                     h)];      [btnText setTitleColor:[UIColor redColor] forState:UIControlStateNormal];      [btnText setTitle:strTitle forState:UIControlStateNormal];      //橫豎屏自適應(yīng)      btnText.autoresizingMask = UIViewAutoresizingFlexibleWidth;      offsetX += btnText.frame.origin.x;      //設(shè)置為 NO,否則無(wú)法響應(yīng)點(diǎn)擊事件      btnText.userInteractionEnabled = NO;      //添加到滾動(dòng)視圖      [scrollViewText addSubview:btnText];      i++;    }    //設(shè)置滾動(dòng)區(qū)域大小    [scrollViewText setContentSize:CGSizeMake(offsetX, 0)];  }}#pragma mark - 滾動(dòng)處理//開(kāi)始滾動(dòng)-(void) startScroll{  if (!timer)    timer = [NSTimer scheduledTimerWithTimeInterval:K_MAIN_VIEW_TEME_INTERVAL target:self selector:@selector(setScrollText) userInfo:nil repeats:YES];  [timer fire];}//滾動(dòng)處理-(void) setScrollText{  [UIView animateWithDuration:K_MAIN_VIEW_TEME_INTERVAL * 2 animations:^{    CGRect rect;    CGFloat offsetX = 0.0,width = 0.0;    for (UIButton *btnText in scrollViewText.subviews) {      rect = btnText.frame;      offsetX = rect.origin.x - K_MAIN_VIEW_SCROLLER_SPACE;      width = [btnText.titleLabel.text length] * K_MAIN_VIEW_SCROLLER_LABLE_WIDTH;      btnText.frame = CGRectMake(offsetX, rect.origin.y, rect.size.width, rect.size.height);      NSLog(@"offsetX:%f",offsetX);    }    if (offsetX < -width){      [UIView setAnimationsEnabled:NO];      [self initScrollText];    }else      [UIView setAnimationsEnabled:YES];  }];}#pragma mark - 動(dòng)態(tài)獲取左邊位置-(float) getTitleLeft:(CGFloat) i {  float left = i * K_MAIN_VIEW_SCROLLER_LABLE_MARGIN;  if (i > 0) {    for (int j = 0; j < i; j ++) {      left += [[self.arrData objectAtIndex:j][@"newsTitle"] length] * K_MAIN_VIEW_SCROLLER_LABLE_WIDTH;    }  }  return left;}#pragma mark - 新聞點(diǎn)擊事件-(void)btnNewsClick:(UIButton *) sender{  NSString *strNewsTitle = sender.titleLabel.text;  UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"系統(tǒng)提示"                          message:strNewsTitle                          delegate:sender                     cancelButtonTitle:@"確定"                     otherButtonTitles:@"其他", nil];  [alert show];}-(void)scrollerViewClick:(UITapGestureRecognizer*)gesture{  CGPoint touchPoint = [gesture locationInView:scrollViewText];  for (UIButton *btn in scrollViewText.subviews) {    if ([btn.layer.presentationLayer hitTest:touchPoint]) {      [self btnNewsClick:btn];      break;    }  }}@end

看完上述內(nèi)容是否對(duì)您有幫助呢？如果還想對(duì)相關(guān)知識(shí)有進(jìn)一步的了解或閱讀更多相關(guān)文章，請(qǐng)關(guān)注創(chuàng)新互聯(lián)行業(yè)資訊頻道，感謝您對(duì)創(chuàng)新互聯(lián)網(wǎng)站建設(shè)公司，的支持。

本文題目：iOS中怎么實(shí)現(xiàn)文字水平無(wú)間斷滾動(dòng)效果-創(chuàng)新互聯(lián)
文章轉(zhuǎn)載：http://jinyejixie.com/article38/diedsp.html

成都網(wǎng)站建設(shè)公司_創(chuàng)新互聯(lián)，為您提供品牌網(wǎng)站建設(shè)、定制網(wǎng)站、定制開(kāi)發(fā)、Google、微信公眾號(hào)、小程序開(kāi)發(fā)

廣告

聲明：本網(wǎng)站發(fā)布的內(nèi)容（圖片、視頻和文字）以用戶投稿、用戶轉(zhuǎn)載內(nèi)容為主，如果涉及侵權(quán)請(qǐng)盡快告知，我們將會(huì)在第一時(shí)間刪除。文章觀點(diǎn)不代表本網(wǎng)站立場(chǎng)，如需處理請(qǐng)聯(lián)系客服。電話：028-86922220；郵箱：631063699@qq.com。內(nèi)容未經(jīng)允許不得轉(zhuǎn)載，或轉(zhuǎn)載時(shí)需注明來(lái)源： 創(chuàng)新互聯(lián)