Introduction of a Bug/masonry

Support iOS 6/6 plus when you encounter such a problem: plug in the UITableViewCell in the center of the Uipagecontrol set failed, right just set the current breakpoint view (6Plus Simulator): <graypagecontrol: 0x7f96a535c350; BaseClass = Uipagecontrol; frame = (179.5 241.75; 55 6); AutoResize = W; Layer = <CALayer:0x7f96a535c4a0>> after run:<graypagecontrol:0x7f96a535c350; BaseClass = Uipagecontrol; frame = (179.333 241.75; 149 6); AutoResize = W; Layer = <CALayer:0x7f96a535c4a0>> When curiosity is changed, consider making a memory modification breakpoint, LLDB, listen to the advice to detect calayer frame changes instead of UIView: (LLDB) PO pc
<GrayPageControl:0x15fe26ca0; BaseClass = Uipagecontrol; frame = (160 217.375; 55 6); AutoResize = W; Layer = <CALayer:0x174c38500>>

(LLDB) Break set-f '-[calayer setbounds:] '-C ' $x 0 = = 0x174c38500 '
Breakpoint 113:where = Quartzcore '-[calayer setbounds:], address = 0x000000018a3eb93c The result is layoutsubviews:

#0 0x000000018a3eb93c inch-[Calayer SetBounds:] () #1 0x000000018a3ec684 inch-[Calayer Setframe:] () #2 0x000000018aa9da3c inch-[UIView (Geometry) Setframe:] () #3 0X000000018AABA7B4 inch-[UIView (Geometry) _applyautoresizingmaskwitholdsuperviewsize:] () #4 0x000000018618cfc8 inch__53-[__nsarraym Enumerateobjectswithoptions:usingblock:]_block_invoke () #5 0x000000018618ce6c inch-[__nsarraym Enumerateobjectswithoptions:usingblock:] () #6 0x000000018aaa9f58 inch-[UIView (Geometry) Resizesubviewswitholdsize:] () #7 0X000000018AA9DAF4 inch-[UIView (Geometry) Setframe:] () #8 0x000000018ab7b9d4 inch-[Uitableviewcellcontentview Setframe:] () #9 0x000000018abe442c inch__53-[UITableView _configurecellfordisplay:forindexpath:]_block_invoke () #Ten 0x000000018aab24c8 inch+[UIView (Animation) Performwithoutanimation:] () # One 0x000000018abe3b0c inch-[UITableView _configurecellfordisplay:forindexpath:] () # A 0x000000018ad9b4d8 inch-[UITableView _createpreparedcellforglobalrow:withindexpath:willdisplay:] () # - 0x000000018ad9006c inch-[UITableView _updatevisiblecellsnow:isrecursive:] () # - 0x000000018ab84c44 inch-[UITableView Layoutsubviews] () # the 0x000000018aaa14a4 inch-[UIView (Calayerdelegate) Layoutsublayersoflayer:] () # - 0x000000018a3f57a8 inch-[Calayer Layoutsublayers] () # - 0x000000018a3f0378 inchCa::layer::layout_if_needed (ca::transaction*) ()# - 0x000000018a3f021c inchCa::layer::layout_and_display_if_needed (ca::transaction*) ()# + 0x000000018a3efa14 inchCa::context::commit_transaction (ca::transaction*) ()# - 0x000000018a3ef798 inchCa::transaction::commit () () # + 0x000000018a3e91c8 inchCa::transaction::observer_callback (__cfrunloopobserver*, unsignedLong,void*) ()# A 0x000000018624ed98 inch__cfrunloop_is_calling_out_to_an_observer_callback_function__ () # at 0x000000018624bd24 inch__cfrunloopdoobservers () # - 0x000000018624c104 inch__cfrunlooprun () # - 0x00000001861791f4 inchcfrunlooprunspecific () # - 0X000000018F59B6FC inchGseventrunmodal () # - 0x000000018ab0a10c inchUiapplicationmain () # - 0x0000000100029ce0 inchMain

Take a look at the assignment process: (LLDB) po $x 0
<CALayer:0x174c38500; Position = Cgpoint (215 220.375); Bounds =CGRect (0 0; 6); Delegate = <GrayPageControl:0x15fe26ca0; BaseClass = Uipagecontrol; frame = (187.5 217.375; 55 6); AutoResize = W; Layer = <CALayer:0x174c38500>>; Sublayers = (<calayer:0x170a3fd40>, <calayer:0x1704250a0>, <calayer:0x174c38200>, <CALayer: 0x174c38080>); opaque = YES; allowsgroupopacity = YES; > (LLDB) Finish (LLDB) PO 0x174c38500<CALayer:0x174c38500; Position = Cgpoint (215 220.375); Bounds =CGRect (0 0; 6); Delegate = <GrayPageControl:0x15fe26ca0; BaseClass = Uipagecontrol; frame = (160 217.375; 110 6); AutoResize = W; Layer = <CALayer:0x174c38500>>; Sublayers = (<calayer:0x170a3fd40>, <calayer:0x1704250a0>, <calayer:0x174c38200>, <CALayer: 0x174c38080>); opaque = YES; allowsgroupopacity = YES; > Here borrowed an iphone 6/ios8, CPU is ARM64 so you have to refer to the following link Bcattle supplementary answer, register is $x0, iphone 5/ios7 with $r0 but incredibly value did not change. The simulator did not succeed. In addition, the former is Layoutsubviews UITableView, and the latter is called by UITableViewCell. Http://stackoverflow.com/questions/13976219/how-do-i-set-an-lldb-watchpoint-on-a-property-of-self-view Curious Satisfied, Then find a way to solve it. So on the search Pagecontrol UITableViewCell layoutsubviews/center and so on, did not see the relevant discussion. One day to learn a little AutoLayout hurriedly come to write a line:

1 [PC Settranslatesautoresizingmaskintoconstraints:no];2 [Cell.contentview addconstraints:[nslayoutconstraint3Constraintswithvisualformat:@"h:|-0-[pc]-0-| "4 options:05 Metrics:nil6 views:nsdictionaryofvariablebindings (PC)];7  8 [Cell.contentview addconstraints:[nslayoutconstraint9 constraintswithvisualformat:[nsstring stringWithFormat: @"v:|-%f-[pc]- One-|", Cgrectgetheight (scroll.frame) -11-6]TenOptions0  One Metrics:nil AViews:nsdictionaryofvariablebindings (PC)];

Not suspense, success. So the conclusion came out, AutoLayout upgrade to compulsory. Masonry, here I come.

1 [PC mas_makeconstraints:^ (Masconstraintmaker * make ) {2     make.bottom.equalTo ( Cell.contentView.mas_bottom). With.offset (-6); 3     Make.centerX.equalTo (Cell.contentView.mas_centerX); 4 }];

Epilogue: Will the storyboard preview feature +sizeclass a bit faster than the traditional hand code? 2015.03.30

Introduction of a Bug/masonry