Could not find class 'android.app.NotificationChannel'

[damain]

After sorting out isses with okhttp. Now I am seeing the installation showing as valid in the dashboard but I have these errors with the notifications on android studio 3.0.1 . See logcat below

01-30 15:07:05.592 2546-2546/kav.ej W/dalvikvm: VFY: unable to resolve virtual method 21588: Landroid/widget/FrameLayout;.startActionModeForChild (Landroid/view/View;Landroid/view/ActionMode$Callback;I)Landroid/view/ActionMode;
01-30 15:07:05.592 2546-2546/kav.ej D/dalvikvm: VFY: replacing opcode 0x6f at 0x0002
01-30 15:07:05.902 2546-2546/kav.ej W/dalvikvm: Unable to resolve superclass of Lcom/parse/PushServiceApi26; (67)
01-30 15:07:05.902 2546-2546/kav.ej W/dalvikvm: Link of class 'Lcom/parse/PushServiceApi26;' failed
01-30 15:07:05.902 2546-2546/kav.ej I/dalvikvm: Could not find method com.parse.PushServiceApi26.isSupported, referenced from method com.parse.PushServiceUtils.isSupported
01-30 15:07:05.912 2546-2546/kav.ej W/dalvikvm: VFY: unable to resolve static method 25771: Lcom/parse/PushServiceApi26;.isSupported ()Z
01-30 15:07:05.912 2546-2546/kav.ej D/dalvikvm: VFY: replacing opcode 0x71 at 0x0004
01-30 15:07:05.912 2546-2546/kav.ej W/dalvikvm: Unable to resolve superclass of Lcom/parse/PushServiceApi26; (67)
01-30 15:07:05.912 2546-2546/kav.ej W/dalvikvm: Link of class 'Lcom/parse/PushServiceApi26;' failed
01-30 15:07:05.912 2546-2546/kav.ej I/dalvikvm: Could not find method com.parse.PushServiceApi26.run, referenced from method com.parse.PushServiceUtils.runService
01-30 15:07:05.912 2546-2546/kav.ej W/dalvikvm: VFY: unable to resolve static method 25775: Lcom/parse/PushServiceApi26;.run (Landroid/content/Context;Landroid/content/Intent;)Z
01-30 15:07:05.912 2546-2546/kav.ej D/dalvikvm: VFY: replacing opcode 0x71 at 0x0004
01-30 15:07:05.922 2546-2546/kav.ej D/dalvikvm: GC_FOR_ALLOC freed 254K, 9% free 3514K/3840K, paused 13ms, total 13ms
01-30 15:07:05.932 2546-2546/kav.ej W/dalvikvm: VFY: unable to find class referenced in signature (Landroid/app/NotificationChannel;)
01-30 15:07:05.932 2546-2546/kav.ej I/dalvikvm: Could not find method android.app.NotificationManager.createNotificationChannel, referenced from method com.parse.ParsePushBroadcastReceiver.createNotificationChannel
01-30 15:07:05.932 2546-2546/kav.ej W/dalvikvm: VFY: unable to resolve virtual method 308: Landroid/app/NotificationManager;.createNotificationChannel (Landroid/app/NotificationChannel;)V
01-30 15:07:05.932 2546-2546/kav.ej D/dalvikvm: VFY: replacing opcode 0x6e at 0x0009
01-30 15:07:05.932 2546-2546/kav.ej W/dalvikvm: VFY: unable to find class referenced in signature (Landroid/app/NotificationChannel;)
01-30 15:07:05.932 2546-2546/kav.ej W/dalvikvm: VFY: unable to find class referenced in signature (Landroid/app/NotificationChannel;)
01-30 15:07:05.932 2546-2546/kav.ej I/dalvikvm: Could not find method android.app.NotificationChannel.getId, referenced from method com.parse.ParsePushBroadcastReceiver.getNotification
01-30 15:07:05.932 2546-2546/kav.ej W/dalvikvm: VFY: unable to resolve virtual method 304: Landroid/app/NotificationChannel;.getId ()Ljava/lang/String;
01-30 15:07:05.932 2546-2546/kav.ej D/dalvikvm: VFY: replacing opcode 0x6e at 0x00f9
01-30 15:07:05.932 2546-2546/kav.ej E/dalvikvm: Could not find class 'android.app.NotificationChannel', referenced from method com.parse.ParsePushBroadcastReceiver.getNotificationChannel
01-30 15:07:05.932 2546-2546/kav.ej W/dalvikvm: VFY: unable to resolve new-instance 51 (Landroid/app/NotificationChannel;) in Lcom/parse/ParsePushBroadcastReceiver;
01-30 15:07:05.932 2546-2546/kav.ej D/dalvikvm: VFY: replacing opcode 0x22 at 0x0000
01-30 15:07:05.942 2546-2546/kav.ej D/dalvikvm: DexOpt: unable to opt direct call 0x012f at 0x09 in Lcom/parse/ParsePushBroadcastReceiver;.getNotificationChannel
01-30 15:07:06.142 2546-2546/kav.ej I/Choreographer: Skipped 36 frames!  The application may be doing too much work on its main thread.
01-30 15:07:06.542 2546-2615/kav.ej W/dalvikvm: VFY: unable to find class referenced in signature (Ljava/nio/file/Path;)
01-30 15:07:06.542 2546-2615/kav.ej W/dalvikvm: VFY: unable to find class referenced in signature ([Ljava/nio/file/OpenOption;)
01-30 15:07:06.542 2546-2615/kav.ej I/dalvikvm: Could not find method java.nio.file.Files.newOutputStream, referenced from method okio.Okio.sink
01-30 15:07:06.542 2546-2615/kav.ej W/dalvikvm: VFY: unable to resolve static method 26515: Ljava/nio/file/Files;.newOutputStream (Ljava/nio/file/Path;[Ljava/nio/file/OpenOption;)Ljava/io/OutputStream;
01-30 15:07:06.542 2546-2615/kav.ej D/dalvikvm: VFY: replacing opcode 0x71 at 0x000b
01-30 15:07:06.552 2546-2615/kav.ej W/dalvikvm: VFY: unable to find class referenced in signature (Ljava/nio/file/Path;)
01-30 15:07:06.552 2546-2615/kav.ej W/dalvikvm: VFY: unable to find class referenced in signature ([Ljava/nio/file/OpenOption;)
01-30 15:07:06.552 2546-2615/kav.ej I/dalvikvm: Could not find method java.nio.file.Files.newInputStream, referenced from method okio.Okio.source
01-30 15:07:06.552 2546-2615/kav.ej W/dalvikvm: VFY: unable to resolve static method 26514: Ljava/nio/file/Files;.newInputStream (Ljava/nio/file/Path;[Ljava/nio/file/OpenOption;)Ljava/io/InputStream;
01-30 15:07:06.552 2546-2615/kav.ej D/dalvikvm: VFY: replacing opcode 0x71 at 0x000b

[rogerhu]

Try out 1.16.6 -- though you seem to be missing the AppCompat library?

[Jawnnypoo]

It also sounds like you may not be targeting API 26+. What do you have as your compile SDK? Try setting it to 27