ios中通過除錯來使用私有api
阿新 • • 發佈：2019-02-14
iOS不允許使用ios私有api，使用私有api可以獲得意想不到的效果 ，同時使用私有api是一個程式設計師的技術體現之一。至於怎麼通過apple的稽核，其實是有些辦法的，但是不屬於今天討論的範圍。私有api可以通過dump標頭檔案獲得，也可以去github clone一份現成的，但是還是推薦自己去dump。但是我們今天不是討論，如何使用dump到的api，而是通過一個例子來討論如何通過檢視標頭檔案使用私有api。
我們以UITextfield為例，其實這是個比較簡單的控制元件，有一個藍色輸入的游標，可以在你輸入的時候隱藏或者顯示，但是並沒有給我們提供改變游標顏色的介面，這個時候我們如果要改變游標的顏色，必然要使用私有api（或者通過比較囉嗦的辦法來做這這件事情）。
我們首先需要dump一包標頭檔案，如何class-dump，不是我們今天討論的要點，現在我們貼上UITextfield的標頭檔案。如果你覺得很長，直接拖到最後面。
/* * Generated by class-dump 3.4 (64 bit). * * class-dump is Copyright (C) 1997-1998, 2000-2001, 2004-2012 by Steve Nygard. */ #import <UIKit/UIControl.h> #import "NSCoding.h" #import "UIPopoverControllerDelegate.h" #import "UITextInput.h" @class NSArray, NSAttributedString, NSDictionary, NSString, UIButton, UIColor, UIFont, UIImage, UIImageView, UILabel, UITextFieldAtomBackgroundView, UITextFieldBackgroundView, UITextFieldBorderView, UITextFieldLabel, UITextInputTraits, UITextInteractionAssistant, UITextPosition, UITextRange, UIView, _UIBaselineLayoutStrut, _UITextServiceSession; @interface UITextField : UIControl <UIPopoverControllerDelegate, UITextInput, NSCoding> { NSAttributedString *_text; UIColor *_textColor; int _borderStyle; float _minimumFontSize; id _delegate; UIImage *_background; UIImage *_disabledBackground; int _clearButtonMode; UIView *_leftView; int _leftViewMode; UIView *_rightView; int _rightViewMode; UITextInputTraits *_traits; UITextInputTraits *_nonAtomTraits; float _fullFontSize; float _paddingLeft; float _paddingTop; float _paddingRight; float _paddingBottom; NSString *_textFont; struct _NSRange _selectionRange; int _scrollXOffset; int _scrollYOffset; float _progress; NSString *_style; UIButton *_clearButton; struct CGSize _clearButtonOffset; struct CGSize _leftViewOffset; struct CGSize _rightViewOffset; UITextFieldBorderView *_backgroundView; UITextFieldBorderView *_disabledBackgroundView; UITextFieldBackgroundView *_systemBackgroundView; UITextFieldLabel *_textLabel; UITextFieldLabel *_placeholderLabel; UITextFieldLabel *_suffixLabel; UITextFieldLabel *_prefixLabel; UIImageView *_iconView; UILabel *_label; float _labelOffset; UITextInteractionAssistant *_interactionAssistant; UIView *_inputView; UIView *_inputAccessoryView; UITextFieldAtomBackgroundView *_atomBackgroundView; UIColor *_shadowColor; struct CGSize _shadowOffset; float _shadowBlur; struct { unsigned int secureTextChanged:1; unsigned int guard:1; unsigned int delegateRespondsToHandleKeyDown:1; unsigned int verticallyCenterText:1; unsigned int isAnimating:4; unsigned int inactiveHasDimAppearance:1; unsigned int becomesFirstResponderOnClearButtonTap:1; unsigned int clearsOnBeginEditing:1; unsigned int clearsPlaceholderOnBeginEditing:1; unsigned int adjustsFontSizeToFitWidth:1; unsigned int fieldEditorAttached:1; unsigned int canBecomeFirstResponder:1; unsigned int shouldSuppressShouldBeginEditing:1; unsigned int inResignFirstResponder:1; unsigned int undoDisabled:1; unsigned int contentsRTL:1; unsigned int explicitAlignment:1; unsigned int implementsCustomDrawing:1; unsigned int needsClearing:1; unsigned int suppressContentChangedNotification:1; unsigned int allowsEditingTextAttributes:1; unsigned int usesAttributedText:1; unsigned int backgroundViewState:2; unsigned int clearsOnInsertion:1; } _textFieldFlags; _UITextServiceSession *_definitionSession; _UITextServiceSession *_learnSession; BOOL _deferringBecomeFirstResponder; BOOL _avoidBecomeFirstResponder; BOOL _setSelectionRangeAfterFieldEditorIsAttached; NSArray *_baselineLayoutConstraints; _UIBaselineLayoutStrut *_baselineLayoutLabel; } @property(retain) UIView *inputView; // @synthesize inputView=_inputView; @property(nonatomic) int rightViewMode; // @synthesize rightViewMode=_rightViewMode; @property(retain, nonatomic) UIView *rightView; // @synthesize rightView=_rightView; @property(nonatomic) int leftViewMode; // @synthesize leftViewMode=_leftViewMode; @property(retain, nonatomic) UIView *leftView; // @synthesize leftView=_leftView; @property(nonatomic) int clearButtonMode; // @synthesize clearButtonMode=_clearButtonMode; @property(retain, nonatomic) UIImage *disabledBackground; // @synthesize disabledBackground=_disabledBackground; @property(retain, nonatomic) UIImage *background; // @synthesize background=_background; @property(nonatomic) id <UITextFieldDelegate> delegate; // @synthesize delegate=_delegate; @property(nonatomic) float minimumFontSize; // @synthesize minimumFontSize=_minimumFontSize; @property(nonatomic) int borderStyle; // @synthesize borderStyle=_borderStyle; @property(retain, nonatomic, setter=_setBaselineLayoutLabel:) _UIBaselineLayoutStrut *_baselineLayoutLabel; // @synthesize _baselineLayoutLabel; @property(copy, nonatomic, setter=_setBaselineLayoutConstraints:) NSArray *_baselineLayoutConstraints; // @synthesize _baselineLayoutConstraints; - (void)setSelectionGranularity:(int)arg1; - (int)selectionGranularity; - (id)_findWebViewWordBoundaryFromPosition:(id)arg1; @property(nonatomic) int selectionAffinity; - (id)characterRangeAtPoint:(struct CGPoint)arg1; - (id)closestPositionToPoint:(struct CGPoint)arg1 withinRange:(id)arg2; - (id)closestPositionToPoint:(struct CGPoint)arg1; - (struct CGRect)caretRectForPosition:(id)arg1; - (struct CGRect)firstRectForRange:(id)arg1; - (void)setBaseWritingDirection:(int)arg1 forRange:(id)arg2; - (int)baseWritingDirectionForPosition:(id)arg1 inDirection:(int)arg2; - (id)characterRangeByExtendingPosition:(id)arg1 inDirection:(int)arg2; - (id)positionWithinRange:(id)arg1 farthestInDirection:(int)arg2; @property(readonly, nonatomic) id <UITextInputTokenizer> tokenizer; @property(nonatomic) id <UITextInputDelegate> inputDelegate; - (int)offsetFromPosition:(id)arg1 toPosition:(id)arg2; - (int)comparePosition:(id)arg1 toPosition:(id)arg2; - (id)positionFromPosition:(id)arg1 inDirection:(int)arg2 offset:(int)arg3; - (id)positionFromPosition:(id)arg1 offset:(int)arg2; - (id)textRangeFromPosition:(id)arg1 toPosition:(id)arg2; @property(readonly, nonatomic) UITextPosition *endOfDocument; @property(readonly, nonatomic) UITextPosition *beginningOfDocument; - (void)unmarkText; - (void)setMarkedText:(id)arg1 selectedRange:(struct _NSRange)arg2; @property(copy, nonatomic) NSDictionary *markedTextStyle; @property(readonly, nonatomic) UITextRange *markedTextRange; @property(copy) UITextRange *selectedTextRange; - (void)replaceRange:(id)arg1 withText:(id)arg2; - (id)textInRange:(id)arg1; - (BOOL)hasText; - (id)metadataDictionariesForDictationResults; - (struct CGRect)frameForDictationResultPlaceholder:(id)arg1; - (void)removeDictationResultPlaceholder:(id)arg1 willInsertResult:(BOOL)arg2; - (id)insertDictationResultPlaceholder; - (void)insertDictationResult:(id)arg1 withCorrectionIdentifier:(id)arg2; - (void)insertText:(id)arg1; - (void)deleteBackward; - (id)_proxyTextInput; - (BOOL)canPerformAction:(SEL)arg1 withSender:(id)arg2; - (BOOL)inPopover; - (void)_promptForReplace:(id)arg1; - (void)replace:(id)arg1; - (void)_showTextStyleOptions:(id)arg1; - (void)toggleUnderline:(id)arg1; - (void)toggleItalics:(id)arg1; - (void)toggleBoldface:(id)arg1; - (void)makeTextWritingDirectionLeftToRight:(id)arg1; - (void)makeTextWritingDirectionRightToLeft:(id)arg1; - (void)selectAll:(id)arg1; - (void)select:(id)arg1; - (void)paste:(id)arg1; - (void)_addShortcut:(id)arg1; - (void)_selectionMayChange:(id)arg1; - (BOOL)_isDisplayingReferenceLibraryViewController; - (void)_define:(id)arg1; - (void)copy:(id)arg1; - (void)cut:(id)arg1; - (id)webView; - (struct CGPoint)constrainedPoint:(struct CGPoint)arg1; - (unsigned int)offsetInMarkedTextForSelection:(id)arg1; - (struct CGRect)closestCaretRectInMarkedTextRangeForPoint:(struct CGPoint)arg1; - (id)selectedAttributedText; - (id)selectedText; - (id)selectionRectsForRange:(id)arg1; - (struct CGRect)_selectionClipRect; - (id)interactionAssistant; - (id)selectionView; - (void)cancelAutoscroll; - (void)startAutoscroll:(struct CGPoint)arg1; - (BOOL)hasSelection; - (id)_fieldEditor; - (void)endSelectionChange; - (void)beginSelectionChange; - (BOOL)isEditable; - (id)undoManager; - (int)atomStyle; - (void)setAtomStyle:(int)arg1; - (BOOL)drawsAsAtom; - (void)setDrawsAsAtom:(BOOL)arg1; - (void)setClearButtonOffset:(struct CGSize)arg1; - (void)_clearButtonClicked:(id)arg1; - (BOOL)isUndoEnabled; - (void)setUndoEnabled:(BOOL)arg1; - (void)setTextCentersVertically:(BOOL)arg1; - (void)setTextCentersHorizontally:(BOOL)arg1; - (void)setLabel:(id)arg1; - (id)textLabel; - (void)setLabelOffset:(float)arg1; - (BOOL)hasMarkedText; - (void)setProgress:(float)arg1; - (struct CGRect)iconRect; - (void)setBecomesFirstResponderOnClearButtonTap:(BOOL)arg1; - (struct CGSize)clearButtonOffset; - (void)setIcon:(id)arg1; - (unsigned int)characterOffsetAtPoint:(struct CGPoint)arg1; - (void)setSelectionRange:(struct _NSRange)arg1; - (struct _NSRange)selectionRange; - (void)clearText; - (void)layoutTilesNow; - (void)_resetSelectionUI; - (void)_clearSelectionUI; - (void)selectAll; - (void)setEnabled:(BOOL)arg1; - (void)_setEnabled:(BOOL)arg1 animated:(BOOL)arg2; - (void)setInactiveHasDimAppearance:(BOOL)arg1; - (void)setTextFont:(id)arg1; - (float)paddingRight; - (void)setPaddingRight:(float)arg1; - (float)paddingBottom; - (void)setPaddingBottom:(float)arg1; - (float)paddingTop; - (void)setPaddingTop:(float)arg1; - (float)paddingLeft; - (void)setPaddingLeft:(float)arg1; - (void)setPaddingTop:(float)arg1 paddingLeft:(float)arg2; - (void)drawBorder:(struct CGRect)arg1; - (void)drawRect:(struct CGRect)arg1; - (BOOL)_canDrawContent; - (BOOL)_implementsCustomDrawing; - (struct CGRect)editRect; - (struct CGRect)textRect; - (struct CGRect)clearButtonRect; - (void)setClearButtonStyle:(int)arg1; - (void)setTextAutorresizesToFit:(BOOL)arg1; - (void)setAutoresizesTextToFit:(BOOL)arg1; - (id)documentFragmentForPasteboardItemAtIndex:(int)arg1; - (id)_dictationInterpretations; - (id)supportedPasteboardTypesForCurrentSelection; - (BOOL)fieldEditor:(id)arg1 shouldReplaceWithText:(id)arg2; - (BOOL)fieldEditor:(id)arg1 shouldInsertText:(id)arg2 replacingRange:(struct _NSRange)arg3; - (void)fieldEditorDidChangeSelection:(id)arg1; - (struct _NSRange)fieldEditor:(id)arg1 willChangeSelectionFromCharacterRange:(struct _NSRange)arg2 toCharacterRange:(struct _NSRange)arg3; - (void)selectAllFromFieldEditor:(id)arg1; - (void)fieldEditorDidChange:(id)arg1; - (id)customOverlayContainer; - (void)keyboardInputChangedSelection:(id)arg1; - (BOOL)keyboardInputChanged:(id)arg1; - (BOOL)keyboardInputShouldDelete:(id)arg1; - (BOOL)keyboardInput:(id)arg1 shouldReplaceTextInRange:(struct _NSRange)arg2 replacementText:(id)arg3; - (BOOL)keyboardInput:(id)arg1 shouldInsertText:(id)arg2 isMarkedText:(BOOL)arg3; - (void)_applicationResuming:(id)arg1; - (void)willDetachFieldEditor:(id)arg1; - (void)attachFieldEditor:(id)arg1; - (void)willAttachFieldEditor:(id)arg1; - (void)_drawTextInRect:(struct CGRect)arg1 forLabel:(id)arg2; - (void)drawPrefixInRect:(struct CGRect)arg1; - (void)drawSuffixInRect:(struct CGRect)arg1; - (void)drawPlaceholderInRect:(struct CGRect)arg1; - (void)drawTextInRect:(struct CGRect)arg1; - (struct CGRect)rightViewRectForBounds:(struct CGRect)arg1; - (struct CGRect)leftViewRectForBounds:(struct CGRect)arg1; - (struct CGRect)_baselineLeftViewRectForBounds:(struct CGRect)arg1; - (struct CGRect)clearButtonRectForBounds:(struct CGRect)arg1; - (struct CGRect)editingRectForBounds:(struct CGRect)arg1; - (struct CGRect)placeholderRectForBounds:(struct CGRect)arg1; - (struct CGRect)textRectForBounds:(struct CGRect)arg1; - (struct CGRect)borderRectForBounds:(struct CGRect)arg1; @property(retain) UIView *inputAccessoryView; @property(readonly, nonatomic, getter=isEditing) BOOL editing; - (id)backgroundColor; - (void)setBackgroundColor:(id)arg1; @property(copy, nonatomic) NSDictionary *typingAttributes; @property(nonatomic) BOOL allowsEditingTextAttributes; @property(nonatomic) BOOL adjustsFontSizeToFitWidth; - (void)setClearsPlaceholderOnBeginEditing:(BOOL)arg1; - (BOOL)clearsPlaceholderOnBeginEditing; @property(nonatomic) BOOL clearsOnBeginEditing; - (void)_setPrefix:(id)arg1; - (void)_setSuffix:(id)arg1 withColor:(id)arg2; @property(copy, nonatomic) NSAttributedString *attributedPlaceholder; @property(copy, nonatomic) NSString *placeholder; - (void)createPlaceholderIfNecessary; - (void)finishedSettingPlaceholder; - (id)createTextLabelWithTextColor:(id)arg1; - (void)_createBaselineLayoutLabelIfNecessary; - (id)createPlaceholderLabelWithFont:(id)arg1 andTextAlignment:(int)arg2; - (void)setContentVerticalAlignment:(int)arg1; @property(nonatomic) int textAlignment; @property(retain, nonatomic) UIFont *font; - (void)disableClearsOnInsertion; @property(nonatomic) BOOL clearsOnInsertion; - (float)shadowBlur; - (void)setShadowBlur:(float)arg1; - (struct CGSize)shadowOffset; - (void)setShadowOffset:(struct CGSize)arg1; - (id)shadowColor; - (void)setShadowColor:(id)arg1; @property(retain, nonatomic) UIColor *textColor; - (void)_updateTextColor; @property(copy, nonatomic) NSAttributedString *attributedText; - (void)_setAttributedText:(id)arg1 onFieldEditorAndSetCaretSelectionAfterText:(BOOL)arg2; - (void)_transferTextFieldPropertiesFromText:(id)arg1; - (void)_transferAttribute:(id)arg1 fromString:(id)arg2 andSetPropertyWith:(SEL)arg3 usingValueClass:(Class)arg4; @property(copy, nonatomic) NSString *text; - (void)finishedSettingTextOrAttributedText; - (id)searchText; - (BOOL)_hasContent; - (id)_attributedText; - (id)_text; @property(nonatomic, getter=isSecureTextEntry) BOOL secureTextEntry; // @dynamic secureTextEntry; - (void)_updateTextLabel; - (BOOL)respondsToSelector:(SEL)arg1; - (id)methodSignatureForSelector:(SEL)arg1; - (void)forwardInvocation:(id)arg1; - (id)textInputTraits; - (BOOL)_shouldSendContentChangedNotificationsIfOnlyMarkedTextChanged; - (id)_textLabelView; - (id)_placeholderLabel; - (id)_placeholderView; - (id)_placeholderColor; - (void)_setSystemBackgroundViewActive:(BOOL)arg1; - (BOOL)_fieldEditorAttached; - (Class)_systemBackgroundViewClass; - (void)_setRightViewOffset:(struct CGSize)arg1; - (struct CGSize)_rightViewOffset; - (void)_setLeftViewOffset:(struct CGSize)arg1; - (struct CGSize)_leftViewOffset; - (struct CGPoint)_scrollOffset; - (id)actualFont; - (float)actualMinimumFontSize; - (struct CGRect)adjustedCaretRectForCaretRect:(struct CGRect)arg1; - (void)_updateRTLStateForText:(id)arg1 updateAlignment:(BOOL)arg2; - (void)_setImplicitAlignment; - (void)_clearBackgroundViews; - (void)_updateBackgroundViewsAnimated:(BOOL)arg1; - (BOOL)_shouldEndEditing; - (void)layoutSubviews; - (struct CGRect)_prefixFrame; - (struct CGRect)_suffixFrame; - (void)updateConstraints; - (void)_setUpBaselineLayoutConstraints; - (struct CGRect)_frameForLabel:(id)arg1 inTextRect:(struct CGRect)arg2; - (void)_updateLabel; - (struct CGRect)_textRectExcludingButtonsForBounds:(struct CGRect)arg1; - (struct CGRect)_textRectForBounds:(struct CGRect)arg1 forEditing:(BOOL)arg2; - (BOOL)_isShowingPrefix; - (BOOL)_isShowingPlaceholder; - (BOOL)_showsRightView; - (BOOL)_showsLeftView; - (BOOL)_showsClearButtonWhenEmpty; - (BOOL)_showsClearButton:(BOOL)arg1; - (BOOL)_showsClearButtonWhenNonEmpty:(BOOL)arg1; - (void)_updateAtomBackground; - (BOOL)_showsAtomBackground; - (BOOL)_partsShouldBeMini; - (BOOL)_heightShouldBeMini; - (struct CGRect)_atomBackgroundViewFrame; - (void)_updateAutosizeStyleIfNeeded; - (void)_updateButtons; - (id)_clearButton; - (id)clearButton; - (id)_clearButtonImageForState:(unsigned int)arg1; - (void)_endedEditing; - (id)_style; - (id)_createCSSStyleDeclarationForWebView:(id)arg1; - (float)_marginTop; - (id)_copyFont:(id)arg1 newSize:(float)arg2 maxSize:(float)arg3; - (void)setFont:(id)arg1 fullFontSize:(float)arg2; - (id)hitTest:(struct CGPoint)arg1 withEvent:(id)arg2; - (void)touchesEnded:(id)arg1 withEvent:(id)arg2; - (void)touchesCancelled:(id)arg1 withEvent:(id)arg2; - (void)_resignFirstResponder; - (void)_windowBecameKey; - (BOOL)resignFirstResponder; - (void)_removeShortcutController; - (void)_removeDefinitionController; - (void)_becomeFirstResponder; - (void)_updatePlaceholderPosition; - (int)_currentTextAlignment; - (void)__resumeBecomeFirstResponder; - (void)_becomeFirstResponderAndMakeVisible; - (BOOL)_requiresKeyboardResetOnReload; - (id)_keyboardResponder; - (BOOL)canResignFirstResponder; - (BOOL)canBecomeFirstResponder; - (struct CGSize)sizeThatFits:(struct CGSize)arg1; - (struct CGSize)_intrinsicSizeWithinSize:(struct CGSize)arg1; - (id)viewForBaselineLayout; - (struct CGSize)_textSize; - (struct CGSize)_textSizeUsingFullFontSize:(BOOL)arg1; - (void)setAnimating:(BOOL)arg1; - (void)setBounds:(struct CGRect)arg1; - (void)setFrame:(struct CGRect)arg1; - (void)_sizeChanged:(BOOL)arg1; - (void)_setNeedsStyleRecalc; - (void)_clearStyle; - (void)dealloc; - (void)_encodeBackgroundColorWithCoder:(id)arg1; - (void)encodeWithCoder:(id)arg1; - (void)_populateArchivedSubviews:(id)arg1; - (id)initWithCoder:(id)arg1; - (id)initWithFrame:(struct CGRect)arg1; - (void)_invalidateBaselineLayoutConstraints; - (id)_scriptingInfo; - (void)decodeRestorableStateWithCoder:(id)arg1; - (void)encodeRestorableStateWithCoder:(id)arg1; - (BOOL)isElementAccessibilityExposedToInterfaceBuilder; - (BOOL)isAccessibilityElementByDefault; // Remaining properties @property(nonatomic) int autocapitalizationType; // @dynamic autocapitalizationType; @property(nonatomic) int autocorrectionType; // @dynamic autocorrectionType; @property(nonatomic) BOOL enablesReturnKeyAutomatically; // @dynamic enablesReturnKeyAutomatically; @property(nonatomic) int keyboardAppearance; // @dynamic keyboardAppearance; @property(nonatomic) int keyboardType; // @dynamic keyboardType; @property(nonatomic) int returnKeyType; // @dynamic returnKeyType; @property(nonatomic) int spellCheckingType; // @dynamic spellCheckingType; @property(readonly, nonatomic) UIView *textInputView; @end
首先我們看它宣告的方法，關於cursor 的函式，或者表示類似顏色設定的函式，一看之下，沒有。這個時候我們注意到有一個函式是 - (id)textInputTraits;
字面意思上是文字輸入特徵的意思，這個很有可能是我們需要的設定游標的顏色，ok，現在我們開始寫程式碼。
省略建立project的步驟，直接上程式碼
我們看到private 下面，有一行是標識color的，很可能這個就是我們找的游標樣色的屬性。同樣我們看一下 UITextfieldTraits的標頭檔案，找到我們需要呼叫的函式。
/* * Generated by class-dump 3.4 (64 bit). * * class-dump is Copyright (C) 1997-1998, 2000-2001, 2004-2012 by Steve Nygard. */ #import "NSObject.h" #import "NSCopying.h" #import "UITextInputTraits.h" #import "UITextInputTraits_Private.h" @class UIColor, UIImage; @interface UITextInputTraits : NSObject <UITextInputTraits, UITextInputTraits_Private, NSCopying> { int autocapitalizationType; int autocorrectionType; int spellCheckingType; unsigned int keyboardType:8; unsigned int keyboardAppearance:8; int returnKeyType; BOOL enablesReturnKeyAutomatically; BOOL secureTextEntry; struct __CFCharacterSet *textTrimmingSet; UIColor *insertionPointColor; UIColor *selectionBarColor; UIColor *selectionHighlightColor; UIImage *selectionDragDotImage; unsigned int insertionPointWidth; int textLoupeVisibility; int textSelectionBehavior; id textSuggestionDelegate; BOOL contentsIsSingleValue; BOOL acceptsEmoji; BOOL returnKeyGoesToNextResponder; BOOL acceptsFloatingKeyboard; BOOL acceptsSplitKeyboard; BOOL displaySecureTextUsingPlainText; BOOL learnsCorrections; int emptyContentReturnKeyType; int shortcutConversionType; BOOL suppressReturnKeyStyling; BOOL forceEnableDictation; BOOL useInterfaceLanguageForLocalization; BOOL deferBecomingResponder; } + (BOOL)keyboardTypeRequiresASCIICapable:(int)arg1; + (id)traitsByAdoptingTraits:(id)arg1; + (id)defaultTextInputTraits; @property(nonatomic) BOOL deferBecomingResponder; // @synthesize deferBecomingResponder; @property(nonatomic) BOOL useInterfaceLanguageForLocalization; // @synthesize useInterfaceLanguageForLocalization; @property(nonatomic) BOOL forceEnableDictation; // @synthesize forceEnableDictation; @property(nonatomic) BOOL suppressReturnKeyStyling; // @synthesize suppressReturnKeyStyling; @property(nonatomic) int shortcutConversionType; // @synthesize shortcutConversionType; @property(nonatomic) BOOL learnsCorrections; // @synthesize learnsCorrections; @property(nonatomic) BOOL displaySecureTextUsingPlainText; // @synthesize displaySecureTextUsingPlainText; @property(nonatomic) BOOL acceptsSplitKeyboard; // @synthesize acceptsSplitKeyboard; @property(nonatomic) BOOL acceptsFloatingKeyboard; // @synthesize acceptsFloatingKeyboard; @property(nonatomic) BOOL returnKeyGoesToNextResponder; // @synthesize returnKeyGoesToNextResponder; @property(nonatomic) int emptyContentReturnKeyType; // @synthesize emptyContentReturnKeyType; @property(nonatomic) BOOL acceptsEmoji; // @synthesize acceptsEmoji; @property(nonatomic) BOOL contentsIsSingleValue; // @synthesize contentsIsSingleValue; @property(nonatomic) int textSelectionBehavior; // @synthesize textSelectionBehavior; @property(nonatomic) int textLoupeVisibility; // @synthesize textLoupeVisibility; @property(nonatomic) unsigned int insertionPointWidth; // @synthesize insertionPointWidth; @property(retain, nonatomic) UIImage *selectionDragDotImage; // @synthesize selectionDragDotImage; @property(retain, nonatomic) UIColor *selectionHighlightColor; // @synthesize selectionHighlightColor; @property(retain, nonatomic) UIColor *selectionBarColor; // @synthesize selectionBarColor; @property(retain, nonatomic) UIColor *insertionPointColor; // @synthesize insertionPointColor; @property(nonatomic, getter=isSecureTextEntry) BOOL secureTextEntry; // @synthesize secureTextEntry; @property(nonatomic) BOOL enablesReturnKeyAutomatically; // @synthesize enablesReturnKeyAutomatically; @property(nonatomic) int returnKeyType; // @synthesize returnKeyType; @property(nonatomic) int keyboardAppearance; // @synthesize keyboardAppearance; @property(nonatomic) int keyboardType; // @synthesize keyboardType; @property(nonatomic) int spellCheckingType; // @synthesize spellCheckingType; @property(nonatomic) int autocorrectionType; // @synthesize autocorrectionType; @property(nonatomic) int autocapitalizationType; // @synthesize autocapitalizationType; - (BOOL)isEqual:(id)arg1; - (id)description; - (id)copyWithZone:(struct _NSZone *)arg1; - (void)takeTraitsFrom:(id)arg1; - (void)setToDefaultValues; - (void)dealloc; - (id)init; @property(nonatomic) id textSuggestionDelegate; // @dynamic textSuggestionDelegate; @property(nonatomic) struct __CFCharacterSet *textTrimmingSet; // @dynamic textTrimmingSet; - (id)dictionaryRepresentation; - (void)setToSecureValues; @end
我們找到一個property ： insertionPointColor，字面意思上基本上確定這個就是我們要找的設定游標的函式。
經過嘗試果然如此，現在貼上結果
各位看官，這次的關於私有api的分析就結束了，其實整個過程沒這麼順利，只是我省掉了一些，本身這個做法我也沒有用到專案中，而是選擇一個開源的專案，但是對於私有api的熟悉也體現一個程式設計師對於apple這套東西的熟悉，同時我們可以模仿私有的實現，做一些事情，但是不推薦大家直接使用私有api。