[英]How do I get parse to play a certain song when a button in the cell is clicked?
When I play song it gets recorded in my app.当我播放歌曲时,它会记录在我的应用程序中。 The song title, artist, etc. is listed in a cell.
歌曲名称、艺术家等列在一个单元格中。 Every time I go to the next song a new cell is added.
每次我转到下一首歌曲时,都会添加一个新单元格。 Currently in each cell the title and artist are listed as well as a button.
目前在每个单元格中都列出了标题和艺术家以及一个按钮。 Whenever I click the button my program will check if that song is in parse and if it is it will play that file.
每当我单击按钮时,我的程序都会检查该歌曲是否在解析中,如果是,它将播放该文件。 Ie if song a is chosen it will check if song a is in parse and if it is it will play that file, same with song b, but if I go back and click the play button for the first song it plays the second song.
即,如果选择歌曲 a,它将检查歌曲 a 是否在解析中,如果是,它将播放该文件,与歌曲 b 相同,但如果我返回并单击第一首歌曲的播放按钮,它将播放第二首歌曲。 How do I get each button in each cell to play the corresponding song in that cell?
如何让每个单元格中的每个按钮播放该单元格中的相应歌曲?
func playit(sender: UIButton!){
if let nowPlaying = musicPlayer.nowPlayingItem{
let title = nowPlaying[MPMediaItemPropertyTitle] as? String
let artist = nowPlaying[MPMediaItemPropertyTitle] as? String
println(title! + artist!)
let query = PFQuery(className: "Songs")
query.whereKey("SongName", equalTo: title!)
query.findObjectsInBackgroundWithBlock {
(objects: [AnyObject]?, error: NSError?) -> Void in
if error == nil {
// The find succeeded.
println("Successfully retrieved \(objects!.count) song(s).")
// Do something with the found objects
if let objects = objects as? [PFObject] {
for object in objects {
println(object.objectId)
let playButtonrow = sender.tag
let object = object as PFObject
let parseAudio = object.valueForKey("SongFile") as! PFFile
let audioPath: String = parseAudio.url!
let urlParse: NSURL = NSURL(string: audioPath)!
player = AVPlayer(URL: urlParse)
println(player)
player.volume = 1.0
player.play()
if (player.rate > 0) && (player.error == nil) {
// player is playing
println("Playing")
} else {
println("Not Playing")
}
}
}
} else {
// Log details of the failure
println("Error: \(error!) \(error!.userInfo!)")
}
}
}
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell: UITableViewCell = self.table.dequeueReusableCellWithIdentifier("cell") as! UITableViewCell
var play: Play
play = add[indexPath.row]
let playButton : UIButton = UIButton.buttonWithType(UIButtonType.Custom) as! UIButton
playButton.tag = indexPath.row
let imageret = "playbutton"
playButton.setImage(UIImage(named: imageret), forState: .Normal)
playButton.frame = CGRectMake(236, 20, 100, 100)
playButton.addTarget(self,action: "playit:", forControlEvents: UIControlEvents.TouchUpInside)
for view: UIView in cell.contentView.subviews as! Array<UIView> {
view.removeFromSuperview()
}
cell.contentView.addSubview(playButton)
Sounds like the issue is in your tableview and re-use of the cells.听起来问题出在您的表格视图和单元格的重用中。 How are you determining what cell index a button press is associated with?
您如何确定按下的按钮与哪个单元格索引相关联?
Check this out.看一下这个。 Detecting which UIButton was pressed in a UITableView
检测在 UITableView 中按下了哪个 UIButton
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