定時器黔寇。動畫庞钢。數(shù)組晕窑。字符串拼接粘优。
定時器Gif
- (void)viewDidLoad {
[super viewDidLoad];
image=[[UIImageView alloc] initWithFrame:self.view.frame];
image.image= [UIImage imageNamed:@"1.png"];
[self.view addSubview:image];
[NSTimer scheduledTimerWithTimeInterval:1/18.0 target:self selector:@selector(changePicture) userInfo:nil repeats:YES];
}
- (void)changePicture {
static int a = 1;
a ++;
//a%44+1循環(huán)
image.image= [UIImage imageNamed:[NSString stringWithFormat:@"%d.png",a%44+1]];
/*
if (a == 45) {
a = 1;
}
NSString *name = [NSString stringWithFormat:@"%d.png",a%44+1];
image.image = [UIImage imageNamed:name];
*/
}
動畫Gif
- (void)viewDidLoad {
[super viewDidLoad];
//創(chuàng)建圖片視圖
_imageView=[[UIImageView alloc] initWithFrame:self.view.frame];
//靜態(tài)圖片:當動態(tài)圖片停止時,會顯示靜態(tài)圖片
//如果不設置靜態(tài)圖片,動態(tài)圖片停止只會就是空白
_imageView.image= [UIImage imageNamed:@"1.png"];
[self.view addSubview:_imageView];
//創(chuàng)建幾張圖片
UIImage *image1 = [UIImage imageNamed:@"1.png"];
UIImage *image2 = [UIImage imageNamed:@"10.png"];
UIImage *image3 = [UIImage imageNamed:@"35.png"];
//_imageView有animationImages動態(tài)圖片屬性
// NSArray數(shù)組NS的類的顯示都和界面沒關系
//Objects元素
_imageView.animationImages= [[NSArray alloc] initWithObjects:image1,image2,image3,nil];
//animationDuration設置動態(tài)圖片每循環(huán)切換一次的時間表示整個圖片集切換一次的時間
_imageView.animationDuration= 1;
//animationRepeatCount重復次數(shù)默認次數(shù)是無限,可不設置;設置為0也是無限次數(shù)表示無限重復
_imageView.animationRepeatCount= 0;
//開始動畫,(imageView幀動畫,改變圖片的內(nèi)容) (UIView動畫,改變大小和位置)
//[_imageView startAnimating];
//停止動畫
//[_imageView stopAnimating];
}
//觸摸方法
- (void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event {
//開始動畫
[_imageView startAnimating];
//停止幀動畫
//停止回到靜態(tài)屬性圖片(第一張);
//[_imageView stopAnimating];
}
數(shù)組實現(xiàn)幀動畫
//改變圖片的方法
- (void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event {
//創(chuàng)建可變數(shù)組
NSMutableArray * _mutableArray = [NSMutableArray arrayWithCapacity:0];
//往數(shù)組中添加圖片
for(inti = 1; i <= 44; i ++) {
//拼接圖片名稱
NSString *name = [NSStringstringWithFormat:@"%d.png",i];
//創(chuàng)建圖片
UIImage *image = [UIImage imageNamed:name];
//把圖片放到數(shù)組里
[_mutableArray addObject:image];
}
//輸出數(shù)組,檢驗添加是否正確(圖片名字是否正確,創(chuàng)建全局變量,創(chuàng)建數(shù)組)
NSLog(@"%@",_mutableArray);
//設置幀動畫圖片
_imageV.animationImages= _mutableArray;
_imageV.animationDuration= 44/18.0;
//每次點擊按鈕,都播放一次
_imageV.animationRepeatCount= 1;
//開始動畫
[_imageV startAnimating];
}
