如何在iPhone中以编程方式添加下一个和上一个按钮?

时间:2011-01-24 03:57:27

标签: ios iphone uibutton

在图片视图中,如何在iPhone中以编程方式添加下一个和上一个按钮(前后选项)?

2 个答案:

答案 0 :(得分:2)

在图片视图中添加按钮?

如果是,代码如下

    UIButton *nextBut=[UIButton buttonWithType:UIButtonTypeRoundedRect];
    nextBut.frame= CGRectMake(x, y, 120, 100);
    [nextBut setTitle:@"Next" forState:UIControlStateNormal];
    [nextBut addTarget:self action:@selector(nextbuttonAction) forControlEvents:UIControlEventTouchUpInside];
    [self.imageView addSubview:nextBut];
    [nextBut release];

    UIButton *prevBut=[UIButton buttonWithType:UIButtonTypeRoundedRect];
    prevBut.frame= CGRectMake(x, y, 120, 100);
    [prevBut setTitle:@"Previous" forState:UIControlStateNormal];
    [prevBut addTarget:self action:@selector(prevbuttonAction) forControlEvents:UIControlEventTouchUpInside];
    [self.imageView addSubview:prevBut];
    [prevBut release];

x,y是视图中按钮的位置。

然后编写按钮操作的代码,

-(IBAction)nextbuttonAction
{
//Next Button Action
}

-(IBAction)prevbuttonAction
{
//Previous Button Action
}

修改

设置pickerView委托。在以下方法代码中,如下所示,

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
 imageView.image=[UIImage imageNamed:[imageArray objectAtIndex:row]];
}

答案 1 :(得分:0)

将所有图像放在一个数组中(让imageArray)并为当前图像获取整数类型的全局变量(让curIndex) 分别增加和减少全局变量nextbuttonAction和prevbuttonAction

从imageArray中更改imageview控件的图像来自index curIndex([imageArray objectAtIndex:curIndex])