Iphone 在选择其他按钮时更改UIButton图像

Iphone 在选择其他按钮时更改UIButton图像,iphone,image,uibutton,Iphone,Image,Uibutton,在我的UIView中,视频下方有两个按钮,一个播放按钮和一个停止按钮。单击播放按钮时,结果显示为暂停按钮,反之亦然。以下是实现代码: -(UIView *)subViewControlsView{ UIView *subViewWithControls = [[[UIView alloc]init]autorelease]; subViewWithControls = [[UIView alloc]initWithFrame:CGRectMake((self.view.frame

在我的UIView中,视频下方有两个按钮,一个播放按钮和一个停止按钮。单击播放按钮时,结果显示为暂停按钮,反之亦然。以下是实现代码:

-(UIView *)subViewControlsView{
    UIView *subViewWithControls = [[[UIView alloc]init]autorelease];
    subViewWithControls = [[UIView alloc]initWithFrame:CGRectMake((self.view.frame.size.width - xPoint_Pad) - 147, 630, 147, 44)];
    [subViewWithControls setBackgroundColor:[UIColor clearColor]];

    playButton = [UIButton buttonWithType:UIButtonTypeCustom];
    [playButton setFrame:CGRectMake(0, 0, 44, 44)];
    [playButton setImage:[UIImage imageNamed:@"play.png"] forState:UIControlStateNormal];
    [playButton setImage:[UIImage imageNamed:@"pause.png"] forState:UIControlStateSelected];
    [playButton addTarget:self action:@selector(play:) forControlEvents:UIControlEventTouchUpInside];
    [subViewWithControls addSubview:playButton];


    stopButton = [UIButton buttonWithType:UIButtonTypeCustom];
    [stopButton setFrame:CGRectMake(94, 0, 44, 44)];
    [stopButton setImage:[UIImage imageNamed:@"stop.png"] forState:UIControlStateNormal];
    [stopButton addTarget:self action:@selector(stop:) forControlEvents:UIControlEventTouchUpInside];
    [subViewWithControls addSubview:stopButton];

    return subViewWithControls;
}
下面是播放按钮操作:

-(void)play:(UIButton *)sender
{
    if(sender.selected == NO){
        sender.selected = YES;
        [self setButtonCurrentState:YES];
        [self.moviePlayerController setInitialPlaybackTime:self.currentTime];
        [self playMovieFile:[self localMovieURL]];
    }
    else{
        sender.selected = NO;
        [self setButtonCurrentState:NO];
        self.currentTime = self.moviePlayerController.currentPlaybackTime;
        [self.moviePlayerController pause];
    }
}
我的要求是,一旦视频停止,即当用户单击停止按钮时,我需要将播放图像更改为暂停播放按钮。我尝试了以下方法:

-(void)stop:(UIButton *)sender{
    if (self.buttonCurrentState == YES)
    {
        [playButton setImage:[UIImage imageNamed:@"play.png"] forState:UIControlStateNormal];
    }
    self.currentTime = 0.0;
    [[self moviePlayerController] stop];
    [self deletePlayerAndNotificationObservers];
}
它正在验证停止按钮动作的条件,我已经调试和测试过了,但是图像的变化没有影响。想知道为什么

我也尝试过在play button action中更改图像,而不是在
-(UIView*)子视图ControlsView
方法中进行更改。但发生的事情令我惊讶,我看不到按钮,因为图像未在视图方法中设置。我尝试将图像设置为“控制状态正常”的初始播放,然后在播放操作中更改。现在发生的情况是“播放”按钮没有变为“暂停”按钮,这是一个双重打击。我尝试设置标记、布尔值等。它们似乎都不起作用

谁能给我一个解决方案吗

提前感谢大家:)

将图像实例设置为状态UIControlStateNormal,但播放电影时按钮状态仍为UIControlStateSelected(即将显示pause.png)

因此,解决方案是,您需要设置状态

-(void)stop:(UIButton *)sender{
    if (playButton.isSelected)
    {
        [playButton setSelected:NO];
    }
    self.currentTime = 0.0;
    [[self moviePlayerController] stop];
    [self deletePlayerAndNotificationObservers];
}

现在,我找到了解决问题的方法。感谢San先生和Preetam先生的关心,并帮助我解决了问题。我们需要通过设置标签,然后禁用playButton的选定状态来更改按钮图像,即

//Set the tag for button
playButton = [UIButton buttonWithType:UIButtonTypeCustom];
playButton.tag = 104;
然后访问按钮并将其状态重置为正常

-(void)stop:(UIButton *)sender
{
    UIButton * play=(UIButton*)[self.view viewWithTag:104];
    [play setSelected:NO];
    ........
}

感谢并希望它能帮助一些人,快乐编码:)

您是否检查了playButton是否为零?因为我看不到按钮没有改变图像的任何问题。我正在改变播放按钮的图像,即它最初保存播放图像,然后当单击时会变成暂停图像,反之亦然,该部分工作正常!!但当我通过停止按钮动作停止视频时,我希望带有暂停图像的播放按钮变为播放图像。这是我迄今为止无法实现的!!
-(void)stop:(UIButton *)sender
{
    UIButton * play=(UIButton*)[self.view viewWithTag:104];
    [play setSelected:NO];
    ........
}