验证程序拒绝 API 16 上的类

Question

如果我尝试在 API 16 上打开我的应用程序（在 API 27 上它正在运行），我会收到以下异常日志：

V/FA: onActivityCreated
I/dalvikvm: Could not find method android.app.AlarmManager.setExactAndAllowWhileIdle, referenced from method com.text.app.utilities.COLNotification.addPreAlarm
VFY: unable to resolve virtual method 130: Landroid/app/AlarmManager;.setExactAndAllowWhileIdle (IJLandroid/app/PendingIntent;)V
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0021
I/dalvikvm: Could not find method android.app.AlarmManager.setExact, referenced from method com.text.app.utilities.COLNotification.addPreAlarm
W/dalvikvm: VFY: unable to resolve virtual method 129: Landroid/app/AlarmManager;.setExact (IJLandroid/app/PendingIntent;)V
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0084
W/dalvikvm: VFY: unable to find class referenced in signature (Landroid/app/NotificationChannel;)
I/dalvikvm: Could not find method android.app.NotificationChannel.getSound, referenced from method com.text.app.utilities.COLNotification.buildNotification
W/dalvikvm: VFY: unable to resolve virtual method 264: Landroid/app/NotificationChannel;.getSound ()Landroid/net/Uri;
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0131
W/dalvikvm: VFY: unable to resolve exception class 435 (Landroid/os/FileUriExposedException;)
W/dalvikvm: VFY: unable to find exception handler at addr 0x25e
W/dalvikvm: VFY:  rejected Lcom/text/app/utilities/COLNotification;.buildNotification (Lcom/text/app/models/appModel;)V
W/dalvikvm: VFY:  rejecting opcode 0x0d at 0x025e
W/dalvikvm: VFY:  rejected Lcom/text/app/utilities/COLNotification;.buildNotification (Lcom/text/app/models/appModel;)V
W/dalvikvm: Verifier rejected class Lcom/text/app/utilities/COLNotification;

所有警告都是正确的，因为 API 16 中不存在“NotificationChannel”等方法。
并且我使用的代码（例如“NotificationChannel”）没有执行，因为我检查了 Build.VERSION.SDK.INT！

究竟是什么问题？有人可以帮忙吗？

Answer 1

我在 catch 语句中使用了“FileUriException”，这导致了问题。

代替：

catch(FileUriException e) {
}

我现在这样做：

catch(Exception e) {
    if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.N && e instanceof FileUriExposedException) {
    }
}