我正在使用下面的代码,但当我滑动滑块时,它调用updateTime方法,但卡在player.currentTime而不是进一步播放
On single sliding of slider it gets stuck
-(IBAction)slide
{
[player setCurrentTime:slider.value];
//NSLog(@"slider value in slide : %f",[slider value]);
}
-(void) updateTime:(NSTimer *)timer
{
slider.value = player.currentTime;
//NSLog(@"player current time in update time : %f",[player currentTime]);
}
- (IBAction)play:(id)sender {
NSError *error;
NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"Sing_for_me.mp3" ofType:nil]];
player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];
if(!player) NSLog(@"Error : %@",&error);
[player prepareToPlay];
slider.continuous=YES;
slider.maximumValue = [player duration];
//NSLog(@"player duration : %f",[player duration]);
// NSLog(@"slider duration : %f",slider.value);
//NSLog(@"player current …我有下面的代码有多个带有结果的DataTables,我需要传递一个包含所有DataTable值的DataSet.
MySqlCommand cmd = new MySqlCommand(getLikeInfo, con);
MySqlDataAdapter da = new MySqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
MySqlCommand cmd1 = new MySqlCommand(getKnowInfo, con);
MySqlDataAdapter da1 = new MySqlDataAdapter(cmd1);
DataTable dt1 = new DataTable();
da1.Fill(dt1);
MySqlCommand cmd2 = new MySqlCommand(getHotelInfo, con);
MySqlDataAdapter da2 = new MySqlDataAdapter(cmd2);
DataTable dt2 = new DataTable();
da2.Fill(dt2);
MySqlCommand cmd3 = new MySqlCommand(getRoomInfo, con);
MySqlDataAdapter da3 = new MySqlDataAdapter(cmd3);
DataTable dt3 = new DataTable();
da3.Fill(dt3);
MySqlCommand cmd4 = new MySqlCommand(getFoodInfo, con);
MySqlDataAdapter da4 = new MySqlDataAdapter(cmd4); …我使用的<asp:TextBox>不是HTML文本框,我想显示提示文本.
有没有办法实现这一目标？
我已经尝试制作静态文本并将其着色为灰色,但是当光标聚焦到该文本框时却没有得到如何使其变空.
我需要在编程UISegmentedControl上实现导航项目,因为我do not have XIB for that.
导航项目已经有了title,left bar button和right bar button
我可以把它放在之间left bar button和title
另外,我如何以语法方式向该控件提供事件？
我使用了以下代码:
segImport = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:@"Own",@"Imported",nil]];
[segImport setFrame:CGRectMake(80, 0, 200, 30)];
[segImport setSegmentedControlStyle:UISegmentedControlStyleBar];
我需要更改UISwitch上的文本,为此我尝试了下面的代码,
((UILabel *)[[[[[[_agreeAgb subviews] lastObject] subviews] objectAtIndex:2] subviews] objectAtIndex:0]).text = @"Foo";
((UILabel *)[[[[[[_agreeAgb subviews] lastObject] subviews] objectAtIndex:2] subviews] objectAtIndex:1]).text = @"Bar";
但它崩溃了 objectAtIndex
除了制作定制的UISwitch之外,还有其他方法吗？