I was expecting the behavior that when I open the application, the application will open and I can easily access all of its options.
05-08 04:48:03.052 28844 28844 E AndroidRuntime: FATAL EXCEPTION: main
05-08 04:48:03.052 28844 28844 E AndroidRuntime: Process: com.d.music, PID: 28844
05-08 04:48:03.052 28844 28844 E AndroidRuntime: android.app.RemoteServiceException: Bad notification for startForeground: java.lang.RuntimeException: invalid channel for service notification: Notification(channel=null pri=1 contentView=com.d.music/0x7f0b008c vibrate=null sound=null tick defaults=0x0 flags=0x40 color=0x00000000 vis=PRIVATE semFlags=0x0 semPriority=0 semMissedCount=0)
05-08 04:48:03.052 28844 28844 E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1879)
05-08 04:48:03.052 28844 28844 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:106)
05-08 04:48:03.052 28844 28844 E AndroidRuntime: at android.os.Looper.loop(Looper.java:214)
05-08 04:48:03.052 28844 28844 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:7073)
05-08 04:48:03.052 28844 28844 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
05-08 04:48:03.052 28844 28844 E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
05-08 04:48:03.052 28844 28844 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)
05-08 04:48:09.470 29050 29050 E AndroidRuntime: FATAL EXCEPTION: main
05-08 04:48:09.470 29050 29050 E AndroidRuntime: Process: com.d.music, PID: 29050
05-08 04:48:09.470 29050 29050 E AndroidRuntime: android.app.RemoteServiceException: Bad notification for startForeground: java.lang.RuntimeException: invalid channel for service notification: Notification(channel=null pri=1 contentView=com.d.music/0x7f0b008c vibrate=null sound=null tick defaults=0x0 flags=0x40 color=0x00000000 vis=PRIVATE semFlags=0x0 semPriority=0 semMissedCount=0)
05-08 04:48:09.470 29050 29050 E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1879)
05-08 04:48:09.470 29050 29050 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:106)
05-08 04:48:09.470 29050 29050 E AndroidRuntime: at android.os.Looper.loop(Looper.java:214)
05-08 04:48:09.470 29050 29050 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:7073)
05-08 04:48:09.470 29050 29050 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
05-08 04:48:09.470 29050 29050 E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
05-08 04:48:09.470 29050 29050 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)
05-08 04:48:16.695 29168 29168 E AndroidRuntime: FATAL EXCEPTION: main
05-08 04:48:16.695 29168 29168 E AndroidRuntime: Process: com.d.music, PID: 29168
05-08 04:48:16.695 29168 29168 E AndroidRuntime: android.app.RemoteServiceException: Bad notification for startForeground: java.lang.RuntimeException: invalid channel for service notification: Notification(channel=null pri=1 contentView=com.d.music/0x7f0b008c vibrate=null sound=null tick defaults=0x0 flags=0x40 color=0x00000000 vis=PRIVATE semFlags=0x0 semPriority=0 semMissedCount=0)
05-08 04:48:16.695 29168 29168 E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1879)
05-08 04:48:16.695 29168 29168 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:106)
05-08 04:48:16.695 29168 29168 E AndroidRuntime: at android.os.Looper.loop(Looper.java:214)
05-08 04:48:16.695 29168 29168 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:7073)
05-08 04:48:16.695 29168 29168 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
05-08 04:48:16.695 29168 29168 E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
05-08 04:48:16.695 29168 29168 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)
05-08 04:48:24.626 29316 29316 E AndroidRuntime: FATAL EXCEPTION: main
05-08 04:48:24.626 29316 29316 E AndroidRuntime: Process: com.d.music, PID: 29316
05-08 04:48:24.626 29316 29316 E AndroidRuntime: android.app.RemoteServiceException: Bad notification for startForeground: java.lang.RuntimeException: invalid channel for service notification: Notification(channel=null pri=1 contentView=com.d.music/0x7f0b008c vibrate=null sound=null tick defaults=0x0 flags=0x40 color=0x00000000 vis=PRIVATE semFlags=0x0 semPriority=0 semMissedCount=0)
05-08 04:48:24.626 29316 29316 E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1879)
05-08 04:48:24.626 29316 29316 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:106)
05-08 04:48:24.626 29316 29316 E AndroidRuntime: at android.os.Looper.loop(Looper.java:214)
05-08 04:48:24.626 29316 29316 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:7073)
05-08 04:48:24.626 29316 29316 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
05-08 04:48:24.626 29316 29316 E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
05-08 04:48:24.626 29316 29316 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)
05-08 04:48:32.203 29423 29423 E AndroidRuntime: FATAL EXCEPTION: main
05-08 04:48:32.203 29423 29423 E AndroidRuntime: Process: com.d.music, PID: 29423
05-08 04:48:32.203 29423 29423 E AndroidRuntime: android.app.RemoteServiceException: Bad notification for startForeground: java.lang.RuntimeException: invalid channel for service notification: Notification(channel=null pri=1 contentView=com.d.music/0x7f0b008c vibrate=null sound=null tick defaults=0x0 flags=0x40 color=0x00000000 vis=PRIVATE semFlags=0x0 semPriority=0 semMissedCount=0)
05-08 04:48:32.203 29423 29423 E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1879)
05-08 04:48:32.203 29423 29423 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:106)
05-08 04:48:32.203 29423 29423 E AndroidRuntime: at android.os.Looper.loop(Looper.java:214)
05-08 04:48:32.203 29423 29423 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:7073)
05-08 04:48:32.203 29423 29423 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
05-08 04:48:32.203 29423 29423 E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
05-08 04:48:32.203 29423 29423 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)
05-08 05:02:22.738 6169 6169 E AndroidRuntime: FATAL EXCEPTION: main
05-08 05:02:22.738 6169 6169 E AndroidRuntime: Process: com.d.music, PID: 6169
05-08 05:02:22.738 6169 6169 E AndroidRuntime: android.app.RemoteServiceException: Bad notification for startForeground: java.lang.RuntimeException: invalid channel for service notification: Notification(channel=null pri=1 contentView=com.d.music/0x7f0b008c vibrate=null sound=null tick defaults=0x0 flags=0x40 color=0x00000000 vis=PRIVATE semFlags=0x0 semPriority=0 semMissedCount=0)
05-08 05:02:22.738 6169 6169 E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1879)
05-08 05:02:22.738 6169 6169 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:106)
05-08 05:02:22.738 6169 6169 E AndroidRuntime: at android.os.Looper.loop(Looper.java:214)
05-08 05:02:22.738 6169 6169 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:7073)
05-08 05:02:22.738 6169 6169 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
05-08 05:02:22.738 6169 6169 E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
05-08 05:02:22.738 6169 6169 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)