[英]UIButton Selector method not working
我要以編程方式創建UIIimageView而不是創建UIView,並且在uiview中以編程方式添加了兩個uibutton,但是按鈕選擇器方法不起作用。 我嘗試了很多事情,但沒有任何反應。 這是我的代碼
-(void) pagingFunc{
CGRect screen = [[UIScreen mainScreen] bounds];
CGFloat width = CGRectGetWidth(screen);
CGFloat height = CGRectGetHeight(screen);
//ScrollView Size and Contents
CGSize mxSize = CGSizeMake( [imgesArry count]*width , height-114);
[scrlView setContentSize : mxSize];
self.customView.translatesAutoresizingMaskIntoConstraints =YES;
self.customView.frame = CGRectMake(0, 0, mxSize.width, mxSize.height);
int incX = 0 ;
for( int i = 0; i < [imgesArry count]; i++)
{
PFObject *imageObject = [imgesArry objectAtIndex:i];
PFFile *file;
if (height == 480) {
file = [imageObject objectForKey:@"image4s"];
}
else{
file = [imageObject objectForKey:@"image6s"];
}
NSString * imgFile = [file url];
UIImageView* imagView = [[UIImageView alloc]initWithFrame : CGRectMake(incX,0,width ,height)];
imgView.userInteractionEnabled = YES;
[imagView sd_setImageWithURL:[NSURL URLWithString:imgFile] placeholderImage:[UIImage imageNamed:@"UserUpdationImageCell.png"]];
btnView = [[UIView alloc] initWithFrame:CGRectMake(incX, imagView.frame.size.height-60, width, 50)];
btnView.backgroundColor = [UIColor colorWithRed:0/255.0 green:0/255.0 blue:0/255.0 alpha:0.8];
UIButton *bckBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[bckBtn addTarget:self
action:@selector(aMethod)
forControlEvents:UIControlEventTouchUpInside];
[bckBtn setTitle:@"Back" forState:UIControlStateNormal];
bckBtn.frame = CGRectMake(0 ,0, 160.0, 40.0);
UIButton *downloadBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[downloadBtn addTarget:self
action:@selector(aMethod)
forControlEvents:UIControlEventTouchUpInside];
[downloadBtn setTitle:@"Download" forState:UIControlStateNormal];
downloadBtn.frame = CGRectMake(160 ,0, 160.0, 40.0);
[btnView addSubview:bckBtn];
[btnView addSubview:downloadBtn];
[self.customView addSubview:imagView];
[self.customView addSubview:btnView];
incX+= width;
}
[scrlView setContentOffset:CGPointMake(width*selectedIndex, 0)];
}
可以設置為: self.customView.userInteractionEnabled=YES;
我編寫了一個您描述的簡單演示,它的工作原理是:
// imagView -> view1 -> bckBtn
UIImageView *imagView = [[UIImageView alloc]initWithFrame:CGRectMake(100, 100, 200, 200)];
imagView.userInteractionEnabled = YES;
imagView.backgroundColor = [UIColor grayColor];
[self.view addSubview:imagView];
UIView *view1 = [[UIView alloc] initWithFrame:CGRectMake(50, 50, 100, 100)];
view1.backgroundColor = [UIColor yellowColor];
[imagView addSubview:view1];
UIButton *bckBtn = [UIButton buttonWithType:UIButtonTypeCustom];
bckBtn.frame = CGRectMake(10, 10, 50, 50);
bckBtn.backgroundColor = [UIColor redColor];
[bckBtn addTarget:self
action:@selector(aMethod)
forControlEvents:UIControlEventTouchUpInside];
[bckBtn setTitle:@"Back" forState:UIControlStateNormal];
[view1 addSubview:bckBtn];
-(void)aMethod{
NSLog(@"button click");
}
希望能幫助到你。
第一件事,請確保按鈕上沒有任何覆蓋。 您也可以嘗試使用GestureRecognizers。
這是一個Swift代碼段,我很確定它可以翻譯成obj-c
let xButton = UIButton(frame: CGRect(x: 0, y: 0, width: 160, height: 40))
xButton.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(aMethod)))
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