我的UIView中有2个按钮位于视频,播放和停止按钮下方。单击“播放”按钮时,结果显示暂停按钮,反之亦然。这是实现代码:
-(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;
}
这是播放按钮操作:
-(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];
}
}
我的要求是我需要在视频停止后更改播放图像以暂停播放按钮,即当用户点击停止按钮时。我尝试了以下方式:
-(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中的条件,我已经调试并测试了,但是图像更改没有影响。想知道原因??
我还尝试在播放按钮操作中更改图像,而不是在-(UIView *)subViewControlsView
方法中进行操作。但是,令我惊讶的是,由于未在视图方法中设置图像,因此无法看到按钮。我试图将图像设置为最初为控制状态正常播放然后更改播放动作。现在发生的是播放按钮没有转到暂停按钮,这是一个双重打击。我尝试设置标签,布尔价值观和更多。他们似乎没有工作!!!
任何人都可以建议我一个解决方案吗?
提前感谢所有人:)
答案 0 :(得分:1)
[playButton setImage:[UIImage imageNamed:@"play.png"] forState:UIControlStateNormal];
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)。
所以解决方法是,你需要设置状态。
-(void)stop:(UIButton *)sender{
if (playButton.isSelected)
{
[playButton setSelected:NO];
}
self.currentTime = 0.0;
[[self moviePlayerController] stop];
[self deletePlayerAndNotificationObservers];
}
答案 1 :(得分:0)
就在那时,我找到了解决问题的方法。感谢Mr.San先生和Mr.Preetam的关心并帮助我解决问题。我们需要通过设置标签来更改按钮图像然后禁用playButton的选定状态,即
//Set the tag for button
playButton = [UIButton buttonWithType:UIButtonTypeCustom];
playButton.tag = 104;
然后访问该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];
........
}
谢谢,希望它有助于一个人,快乐编码:)