fragment嵌套viewpager嵌套fragment二次不显示内容解决demo

int attr layout_constraintBaseline_creator 0x7f010000 int attr layout_constraintBaseline_toBaselineOf 0x7f010001 int attr layout_constraintBottom_creator 0x7f010002 int attr layout_constraintBottom_toBottomOf 0x7f010003 int attr layout_constraintBottom_toTopOf 0x7f010004 int attr layout_constraintDimensionRatio 0x7f010005 int attr layout_constraintEnd_toEndOf 0x7f010006 int attr layout_constraintEnd_toStartOf 0x7f010007 int attr layout_constraintGuide_begin 0x7f010008 int attr layout_constraintGuide_end 0x7f010009 int attr layout_constraintGuide_percent 0x7f01000a int attr layout_constraintHorizontal_bias 0x7f01000b int attr layout_constraintHorizontal_chainStyle 0x7f01000c int attr layout_constraintHorizontal_weight 0x7f01000d int attr layout_constraintLeft_creator 0x7f01000e int attr layout_constraintLeft_toLeftOf 0x7f01000f int attr layout_constraintLeft_toRightOf 0x7f010010 int attr layout_constraintRight_creator 0x7f010011 int attr layout_constraintRight_toLeftOf 0x7f010012 int attr layout_constraintRight_toRightOf 0x7f010013 int attr layout_constraintStart_toEndOf 0x7f010014 int attr layout_constraintStart_toStartOf 0x7f010015 int attr layout_constraintTop_creator 0x7f010016 int attr layout_constraintTop_toBottomOf 0x7f010017 int attr layout_constraintTop_toTopOf 0x7f010018 int attr layout_constraintVertical_bias 0x7f010019 int attr layout_constraintVertical_chainStyle 0x7f01001a int attr layout_constraintVertical_weight 0x7f01001b int attr layout_editor_absoluteX 0x7f01001c int attr layout_editor_absoluteY 0x7f01001d int attr layout_goneMarginBottom 0x7f01001e int attr layout_goneMarginEnd 0x7f01001f int attr layout_goneMarginLeft 0x7f010020 int attr layout_goneMarginRight 0x7f010021 int attr layout_goneMarginStart 0x7f010022 int attr layout_goneMarginTop 0x7f010023 int attr layout_optimizationLevel 0x7f010024 int color colorAccent 0x7f040000 int color colorPrimary 0x7f040001 int color colorPrimaryDark 0x7f040002 int id all 0x7f070004 int id basic 0x7f070005 int id btn1 0x7f07000a int id btn2 0x7f07000d int id chains 0x7f070006 int id container 0x7f070008 int id lsv1 0x7f07000b int id lsv2 0x7f07000c int id none 0x7f070007 int id packed 0x7f070001 int id parent 0x7f070000 int id spread 0x7f070002 int id spread_inside 0x7f070003 int id vp 0x7f070009 int layout activity_main 0x7f030000 int layout myfragment 0x7f030001 int layout myfragment1 0x7f030002 int layout myfragment2 0x7f030003 int layout myfragment3 0x7f030004 int mipmap ic_launcher 0x7f020000 int string app_name 0x7f050000 int style AppTheme 0x7f060000 int[] styleable ConstraintLayout_Layout { 0x010100c4, 0x0101011f, 0x01010120, 0x0101013f, 0x01010140, 0x7f010000, 0x7f010001, 0x7f010002, 0x7f010003, 0x7f010004, 0x7f010005, 0x7f010006, 0x7f010007, 0x7f010008, 0x7f010009, 0x7f01000a, 0x7f01000b, 0x7f01000c, 0x7f01000d, 0x7f01000e, 0x7f01000f, 0x7f010010, 0x7f010011, 0x7f010012, 0x7f010013, 0x7f010014, 0x7f010015, 0x7f010016, 0x7f010017, 0x7f010018, 0x7f010019, 0x7f01001a, 0x7f01001b, 0x7f01001c, 0x7f01001d, 0x7f01001e, 0x7f01001f, 0x7f010020, 0x7f010021, 0x7f010022, 0x7f010023, 0x7f010024 } int styleable ConstraintLayout_Layout_android_maxHeight 2 int styleable ConstraintLayout_Layout_android_maxWidth 1 int styleable ConstraintLayout_Layout_android_minHeight 4 int styleable ConstraintLayout_Layout_android_minWidth 3 int styleable ConstraintLayout_Layout_android_orientation 0 int styleable ConstraintLayout_Layout_layout_constraintBaseline_creator 5 int styleable ConstraintLayout_Layout_layout_constraintBaseline_toBaselineOf 6 int styleable ConstraintLayout_Layout_layout_constraintBottom_creator 7 int styleable ConstraintLayout_Layout_layout_constraintBottom_toBottomOf 8 int styleable ConstraintLayout_Layout_layout_constraintBottom_toTopOf 9 int styleable ConstraintLayout_Layout_layout_constraintDimensionRatio 10 int styleable ConstraintLayout_Layout_layout_constraintEnd_toEndOf 11 int styleable ConstraintLayout_Layout_layout_constraintEnd_toStartOf 12 int styleable ConstraintLayout_Layout_layout_constraintGuide_begin 13 int styleable ConstraintLayout_Layout_layout_constraintGuide_end 14 int styleable ConstraintLayout_Layout_layout_constraintGuide_percent 15 int styleable ConstraintLayout_Layout_layout_constraintHorizontal_bias 16 int styleable ConstraintLayout_Layout_layout_constraintHorizontal_chainStyle 17 int styleable ConstraintLayout_Layout_layout_constraintHorizontal_weight 18 int styleable ConstraintLayout_Layout_layout_constraintLeft_creator 19 int styleable ConstraintLayout_Layout_layout_constraintLeft_toLeftOf 20 int styleable ConstraintLayout_Layout_layout_constraintLeft_toRightOf 21 int styleable ConstraintLayout_Layout_layout_constraintRight_creator 22 int styleable ConstraintLayout_Layout_layout_constraintRight_toLeftOf 23 int styleable ConstraintLayout_Layout_layout_constraintRight_toRightOf 24 int styleable ConstraintLayout_Layout_layout_constraintStart_toEndOf 25 int styleable ConstraintLayout_Layout_layout_constraintStart_toStartOf 26 int styleable ConstraintLayout_Layout_layout_constraintTop_creator 27 int styleable ConstraintLayout_Layout_layout_constraintTop_toBottomOf 28 int styleable ConstraintLayout_Layout_layout_constraintTop_toTopOf 29 int styleable ConstraintLayout_Layout_layout_constraintVertical_bias 30 int styleable ConstraintLayout_Layout_layout_constraintVertical_chainStyle 31 int styleable ConstraintLayout_Layout_layout_constraintVertical_weight 32 int styleable ConstraintLayout_Layout_layout_editor_absoluteX 33 int styleable ConstraintLayout_Layout_layout_editor_absoluteY 34 int styleable ConstraintLayout_Layout_layout_goneMarginBottom 35 int styleable ConstraintLayout_Layout_layout_goneMarginEnd 36 int styleable ConstraintLayout_Layout_layout_goneMarginLeft 37 int styleable ConstraintLayout_Layout_layout_goneMarginRight 38 int styleable ConstraintLayout_Layout_layout_goneMarginStart 39 int styleable ConstraintLayout_Layout_layout_goneMarginTop 40 int styleable ConstraintLayout_Layout_layout_optimizationLevel 41 int[] styleable ConstraintSet { 0x010100c4, 0x010100d0, 0x010100dc, 0x010100f4, 0x010100f5, 0x010100f7, 0x010100f8, 0x010100f9, 0x010100fa, 0x010103b5, 0x010103b6, 0x7f010000, 0x7f010001, 0x7f010002, 0x7f010003, 0x7f010004, 0x7f010005, 0x7f010006, 0x7f010007, 0x7f010008, 0x7f010009, 0x7f01000a, 0x7f01000b, 0x7f01000c, 0x7f01000d, 0x7f01000e, 0x7f01000f, 0x7f010010, 0x7f010011, 0x7f010012, 0x7f010013, 0x7f010014, 0x7f010015, 0x7f010016, 0x7f010017, 0x7f010018, 0x7f010019, 0x7f01001a, 0x7f01001b, 0x7f01001c, 0x7f01001d, 0x7f01001e, 0x7f01001f, 0x7f010020, 0x7f010021, 0x7f010022, 0x7f010023 } int styleable ConstraintSet_android_id 1 int styleable ConstraintSet_android_layout_height 4 int styleable ConstraintSet_android_layout_marginBottom 8 int styleable ConstraintSet_android_layout_marginEnd 10 int styleable ConstraintSet_android_layout_marginLeft 5 int styleable ConstraintSet_android_layout_marginRight 7 int styleable ConstraintSet_android_layout_marginStart 9 int styleable ConstraintSet_android_layout_marginTop 6 int styleable ConstraintSet_android_layout_width 3 int styleable ConstraintSet_android_orientation 0 int styleable ConstraintSet_android_visibility 2 int styleable ConstraintSet_layout_constraintBaseline_creator 11 int styleable ConstraintSet_layout_constraintBaseline_toBaselineOf 12 int styleable ConstraintSet_layout_constraintBottom_creator 13 int styleable ConstraintSet_layout_constraintBottom_toBottomOf 14 int styleable ConstraintSet_layout_constraintBottom_toTopOf 15 int styleable ConstraintSet_layout_constraintDimensionRatio 16 int styleable ConstraintSet_layout_constraintEnd_toEndOf 17 int styleable ConstraintSet_layout_constraintEnd_toStartOf 18 int styleable ConstraintSet_layout_constraintGuide_begin 19 int styleable ConstraintSet_layout_constraintGuide_end 20 int styleable ConstraintSet_layout_constraint