安卓手机连接adb后打印出的log信息，这些信息是什么意思？怎么修复？严重吗？：
W/dalvikvm(12355): Unable to resolve superclass of Landroid/support/v4/app/ActivityCompat21$SharedElementCallbackImpl; (57)
W/dalvikvm(12355): Link of class 'Landroid/support/v4/app/ActivityCompat21$SharedElementCallbackImpl;' failed
W/dalvikvm(12355): Unable to resolve superclass of Landroid/support/v4/app/FragmentTransitionCompat21$1; (1845)
W/dalvikvm(12355): Link of class 'Landroid/support/v4/app/FragmentTransitionCompat21$1;' failed
W/dalvikvm(12355): Unable to resolve superclass of Landroid/support/v4/app/FragmentTransitionCompat21$3; (1845)
W/dalvikvm(12355): Link of class 'Landroid/support/v4/app/FragmentTransitionCompat21$3;' failed
W/dalvikvm(12355): Unable to resolve superclass of Landroid/support/v4/hardware/fingerprint/FingerprintManagerCompatApi23$1; (185)
W/dalvikvm(12355): Link of class 'Landroid/support/v4/hardware/fingerprint/FingerprintManagerCompatApi23$1;' failed
W/dalvikvm(12355): Unable to resolve superclass of Landroid/support/v4/media/VolumeProviderCompatApi21$1; (226)
W/dalvikvm(12355): Link of class 'Landroid/support/v4/media/VolumeProviderCompatApi21$1;' failed
W/dalvikvm(12355): Unable to resolve superclass of Landroid/support/v4/media/session/MediaControllerCompatApi21$CallbackProxy; (227)
W/dalvikvm(12355): Link of class 'Landroid/support/v4/media/session/MediaControllerCompatApi21$CallbackProxy;' failed
W/dalvikvm(12355): Unable to resolve superclass of Landroid/support/v4/media/session/MediaSessionCompatApi21$CallbackProxy; (231)
W/dalvikvm(12355): Link of class 'Landroid/support/v4/media/session/MediaSessionCompatApi21$CallbackProxy;' failed
W/dalvikvm(12355): Link of class 'Landroid/support/v4/view/ViewCompatLollipop$1;' failed
W/dalvikvm(12355): Link of class 'Landroid/support/v4/widget/DrawerLayoutCompatApi21$InsetsListener;' failed
W/dalvikvm(12355): method Landroid/support/v7/internal/widget/ListViewCompat;.lookForSelectablePosition incorrectly overrides package-private method with same name in Landroid/widget/ListView;
W/dalvikvm(12355): Unable to resolve superclass of Lcom/umeng/fb/push/b$1; (6376)
W/dalvikvm(12355): Link of class 'Lcom/umeng/fb/push/b$1;' failed
W/dalvikvm(12355): Link of class 'Lorg/apache/harmony/awt/datatransfer/DataProxy;' failed
W/dalvikvm(12355): Unable to resolve superclass of Lorg/apache/harmony/awt/datatransfer/NativeClipboard; (7155)
W/dalvikvm(12355): Link of class 'Lorg/apache/harmony/awt/datatransfer/NativeClipboard;' failed
W/dalvikvm(12355): Unable to resolve superclass of Landroid/support/v4/media/session/MediaSessionCompatApi21$CallbackProxy; (231)
W/dalvikvm(12355): Link of class 'Landroid/support/v4/media/session/MediaSessionCompatApi21$CallbackProxy;' failed
W/dalvikvm(12355): Unable to resolve superclass of Landroid/support/v4/media/session/MediaSessionCompatApi23$CallbackProxy; (810)
W/dalvikvm(12355): Link of class 'Landroid/support/v4/media/session/MediaSessionCompatApi23$CallbackProxy;' failed
W/dalvikvm(12355): Link of class 'Lcom/zxinsight/share/activity/ShareWeiboActivity;' failed
W/chromium(12355): [WARNING:proxy_service.cc(890)] PAC support disabled because there is no system implementation
E/AndroidProtocolHandler(12355): Unable to open asset URL: file:///android_asset/mw_fingerprint.html
不影响使用都没关系的
这些日志是系统日志 你可以过滤显示自己想看的日志 ide有这样的功能