B面1.0.6，蓝牙链接优化

relax.offline.mp3.music/AppDelegate.swift

@@ -47,10 +47,10 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         let session = AVAudioSession.sharedInstance()
         do {
             //允许后台活跃,播放以及记录
-            try session.setCategory(.playAndRecord, mode: .default, options: [.allowAirPlay, .defaultToSpeaker, .allowBluetooth])
+            try session.setCategory(.playAndRecord, mode: .default, options: [.allowBluetooth, .defaultToSpeaker])
             //激活会话
             try session.setActive(true)
-            try session.overrideOutputAudioPort(.speaker)
+//            try session.overrideOutputAudioPort(.speaker)
         } catch {
             print("Failed to set type:\(error.localizedDescription)")
         }

relax.offline.mp3.music/MP/Common/Base(公用基类)/Controllers/MP_LunchViewController.swift

@@ -59,7 +59,7 @@ class MP_LunchViewController: UIViewController {
         if maxTimes > currentTimes {
             //未加载完
             currentTimes += 0.025
-            let value = currentTimes/maxTimes
+            let value = (currentTimes/maxTimes).isNaN ? 0:(currentTimes/maxTimes)
             DispatchQueue.main.async {
                 [weak self] in
                 guard let self = self else {return}