我正在使用数字选择器 simonvt 库（https://github.com/SimonVT/android-numberpicker）。
我成功添加了库并且应用程序正常运行，但 LogCat 显示以下警告：
Could not find method android.widget.LinearLayout.getAccessibilityNodeProvider, referenced from method net.simonvt.numberpicker.NumberPicker.getAccessibilityNodeProvider
完整的日志：
10-08 18:13:36.152: I/dalvikvm(489): Could not find method android.widget.LinearLayout.getAccessibilityNodeProvider, referenced from method net.simonvt.numberpicker.NumberPicker.getAccessibilityNodeProvider
10-08 18:13:36.152: W/dalvikvm(489): VFY: unable to resolve virtual method 5439: Landroid/widget/LinearLayout;.getAccessibilityNodeProvider ()Landroid/view/accessibility/AccessibilityNodeProvider;
10-08 18:13:36.162: D/dalvikvm(489): VFY: replacing opcode 0x6f at 0x0004
10-08 18:13:36.172: W/dalvikvm(489): Unable to resolve superclass of Lnet/simonvt/numberpicker/NumberPicker$AccessibilityNodeProviderImpl; (701)
10-08 18:13:36.182: W/dalvikvm(489): Link of class 'Lnet/simonvt/numberpicker/NumberPicker$AccessibilityNodeProviderImpl;' failed
10-08 18:13:36.192: W/dalvikvm(489): VFY: unable to find class referenced in signature (Landroid/view/accessibility/AccessibilityNodeProvider;)
10-08 18:13:36.192: D/dalvikvm(489): VFY: dead code 0x0007-0007 in Lnet/simonvt/numberpicker/NumberPicker;.getAccessibilityNodeProvider ()Landroid/view/accessibility/AccessibilityNodeProvider;
10-08 18:13:36.212: I/dalvikvm(489): Could not find method android.widget.LinearLayout.onInitializeAccessibilityEvent, referenced from method net.simonvt.numberpicker.NumberPicker.onInitializeAccessibilityEvent
10-08 18:13:36.212: W/dalvikvm(489): VFY: unable to resolve virtual method 5449: Landroid/widget/LinearLayout;.onInitializeAccessibilityEvent (Landroid/view/accessibility/AccessibilityEvent;)V
10-08 18:13:36.232: D/dalvikvm(489): VFY: replacing opcode 0x6f at 0x0000
10-08 18:13:36.232: D/dalvikvm(489): VFY: dead code 0x0003-0026 in Lnet/simonvt/numberpicker/NumberPicker;.onInitializeAccessibilityEvent (Landroid/view/accessibility/AccessibilityEvent;)V
示例项目也显示了这些警告！
谢谢