ios7 - NSTextAttachment and touch events -


i have uitextview (in edit mode) few images (as nstextattachment). i'd intercept touch events on these.

i have set delegate on uitextview textview:shouldinteractwithtextattachment:inrange: never called.

(from forums seems uitextview's editable property should no work, not per official documentation)

the editor looks this: editor

as mentioned, textview:shouldinteractwithtextattachment:inrange: not meant work editable text views. way around implement own uitapgesturerecognizer , this:

- (void)touchesbegan:(nsset *)touches withevent:(uievent *)event {     [super touchesbegan:touches withevent:event];     if (self.state == uigesturerecognizerstatefailed) return;      uitouch *touch = [touches anyobject];     uitextview *textview = (uitextview*) self.view;     nstextcontainer *textcontainer = textview.textcontainer;     nslayoutmanager *layoutmanager = textview.layoutmanager;      cgpoint point = [touch locationinview:textview];     point.x -= textview.textcontainerinset.left;     point.y -= textview.textcontainerinset.top;      nsuinteger characterindex = [layoutmanager characterindexforpoint:point intextcontainer:textcontainer fractionofdistancebetweeninsertionpoints:nil];      if (characterindex >= textview.text.length)     {         self.state = uigesturerecognizerstatefailed;         return;     }      _textattachment = [textview.attributedtext attribute:nsattachmentattributename atindex:characterindex effectiverange:&_range];     if (_textattachment)     {         return;     }     _textattachment = nil; }

then add gesture recogniser text view , when gesture recognized ask _textattachment value.

bear in mind characterindexforpoint:intextcontainer: fractionofdistancebetweeninsertionpoints: returns nearest character index. might want check if point inside attachment depending on you're planning do.


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