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本地音樂播放器,可以顯示照片,歌手,歌名,可以調(diào)整音量,顯示進度

代碼片段和文件信息
//
//??AppDelegate.m
//??trail
//
//??Created?by?zhangwenqin?on?2018/10/11.
//??Copyright???2018年?zhangwenqin.?All?rights?reserved.
//
#import?“AppDelegate.h“
@interface?AppDelegate?()
@end
@implementation?AppDelegate
-?(BOOL)application:(UIApplication?*)application?didFinishLaunchingWithOptions:(NSDictionary?*)launchOptions?{
????//?Override?point?for?customization?after?application?launch.
????return?YES;
}
-?(void)applicationWillResignActive:(UIApplication?*)application?{
????//?Sent?when?the?application?is?about?to?move?from?active?to?inactive?state.?This?can?occur?for?certain?types?of?temporary?interruptions?(such?as?an?incoming?phone?call?or?SMS?message)?or?when?the?user?quits?the?application?and?it?begins?the?transition?to?the?background?state.
????//?Use?this?method?to?pause?ongoing?tasks?disable?timers?and?invalidate?graphics?rendering?callbacks.?Games?should?use?this?method?to?pause?the?game.
}
-?(void)applicationDidEnterBackground:(UIApplication?*)application?{
????//?Use?this?method?to?release?shared?resources?save?user?data?invalidate?timers?and?store?enough?application?state?information?to?restore?your?application?to?its?current?state?in?case?it?is?terminated?later.
????//?If?your?application?supports?background?execution?this?method?is?called?instead?of?applicationWillTerminate:?when?the?user?quits.
}
-?(void)applicationWillEnterForeground:(UIApplication?*)application?{
????//?Called?as?part?of?the?transition?from?the?background?to?the?active?state;?here?you?can?undo?many?of?the?changes?made?on?entering?the?background.
}
-?(void)applicationDidBecomeActive:(UIApplication?*)application?{
????//?Restart?any?tasks?that?were?paused?(or?not?yet?started)?while?the?application?was?inactive.?If?the?application?was?previously?in?the?background?optionally?refresh?the?user?interface.
}
-?(void)applicationWillTerminate:(UIApplication?*)application?{
????//?Called?when?the?application?is?about?to?terminate.?Save?data?if?appropriate.?See?also?applicationDidEnterBackground:.
}
@end
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-10-11?15:46??trail\
?????文件????????6148??2018-10-11?17:18??trail\.DS_Store
?????目錄???????????0??2018-10-11?17:34??__MACOSX\
?????目錄???????????0??2018-10-11?17:34??__MACOSX\trail\
?????文件?????????120??2018-10-11?17:18??__MACOSX\trail\._.DS_Store
?????目錄???????????0??2018-10-11?14:12??trail\.git\
?????文件??????????15??2018-10-11?14:12??trail\.git\COMMIT_EDITMSG
?????文件?????????137??2018-10-11?14:12??trail\.git\config
?????文件??????????73??2018-10-11?14:12??trail\.git\desc
?????文件??????????23??2018-10-11?14:12??trail\.git\HEAD
?????目錄???????????0??2018-10-11?14:12??trail\.git\hooks\
?????文件?????????177??2018-10-11?14:12??trail\.git\hooks\README.sample
?????文件????????2055??2018-10-11?14:12??trail\.git\index
?????目錄???????????0??2018-10-11?14:12??trail\.git\info\
?????文件??????????40??2018-10-11?14:12??trail\.git\info\exclude
?????目錄???????????0??2018-10-11?17:34??__MACOSX\trail\.git\
?????目錄???????????0??2018-10-11?17:34??__MACOSX\trail\.git\info\
?????文件?????????171??2018-10-11?14:12??__MACOSX\trail\.git\info\._exclude
?????目錄???????????0??2018-10-11?14:12??trail\.git\logs\
?????文件?????????189??2018-10-11?14:12??trail\.git\logs\HEAD
?????目錄???????????0??2018-10-11?14:12??trail\.git\logs\refs\
?????目錄???????????0??2018-10-11?14:12??trail\.git\logs\refs\heads\
?????文件?????????189??2018-10-11?14:12??trail\.git\logs\refs\heads\master
?????目錄???????????0??2018-10-11?14:12??trail\.git\ob
?????目錄???????????0??2018-10-11?14:12??trail\.git\ob
?????文件??????????52??2018-10-11?14:12??trail\.git\ob
?????目錄???????????0??2018-10-11?14:12??trail\.git\ob
?????文件??????????58??2018-10-11?14:12??trail\.git\ob
?????目錄???????????0??2018-10-11?14:12??trail\.git\ob
?????文件?????????633??2018-10-11?14:12??trail\.git\ob
?????目錄???????????0??2018-10-11?14:12??trail\.git\ob
............此處省略100個文件信息
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