├── README.md ├── Demo ├── FSTextView.xcodeproj │ ├── xcuserdata │ │ ├── Steven.xcuserdatad │ │ │ ├── xcdebugger │ │ │ │ └── Breakpoints_v2.xcbkptlist │ │ │ └── xcschemes │ │ │ │ ├── xcschememanagement.plist │ │ │ │ └── FSTextView.xcscheme │ │ ├── sheng.xcuserdatad │ │ │ ├── xcdebugger │ │ │ │ └── Breakpoints_v2.xcbkptlist │ │ │ └── xcschemes │ │ │ │ └── xcschememanagement.plist │ │ ├── fusheng.xcuserdatad │ │ │ └── xcschemes │ │ │ │ └── xcschememanagement.plist │ │ └── Allen.xcuserdatad │ │ │ ├── xcdebugger │ │ │ └── Breakpoints_v2.xcbkptlist │ │ │ └── xcschemes │ │ │ ├── xcschememanagement.plist │ │ │ └── FSTextView.xcscheme │ ├── project.xcworkspace │ │ ├── contents.xcworkspacedata │ │ └── xcuserdata │ │ │ ├── Allen.xcuserdatad │ │ │ └── UserInterfaceState.xcuserstate │ │ │ ├── Steven.xcuserdatad │ │ │ └── UserInterfaceState.xcuserstate │ │ │ ├── sheng.xcuserdatad │ │ │ └── UserInterfaceState.xcuserstate │ │ │ └── fusheng.xcuserdatad │ │ │ └── UserInterfaceState.xcuserstate │ └── project.pbxproj └── FSTextView │ ├── ViewController.h │ ├── RootViewController.h │ ├── AppDelegate.h │ ├── main.m │ ├── RootViewController.m │ ├── Assets.xcassets │ └── AppIcon.appiconset │ │ └── Contents.json │ ├── Info.plist │ ├── Base.lproj │ ├── LaunchScreen.storyboard │ └── Main.storyboard │ ├── AppDelegate.m │ └── ViewController.m ├── FSTextView.podspec ├── LICENSE └── FSTextView ├── FSTextView.h └── FSTextView.m /README.md: -------------------------------------------------------------------------------- 1 | > This repository has been deprecated, use [FSUIKit/FSTextView](https://github.com/lifution/FSUIKit/tree/main/Sources/Classes/Controls/FSTextView) instead. 2 | 3 | 4 | -------------------------------------------------------------------------------- /Demo/FSTextView.xcodeproj/xcuserdata/Steven.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | -------------------------------------------------------------------------------- /Demo/FSTextView.xcodeproj/xcuserdata/sheng.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | -------------------------------------------------------------------------------- /Demo/FSTextView.xcodeproj/project.xcworkspace/contents.xcworkspacedata: -------------------------------------------------------------------------------- 1 | 2 | 4 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /Demo/FSTextView.xcodeproj/project.xcworkspace/xcuserdata/Allen.xcuserdatad/UserInterfaceState.xcuserstate: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/lifution/FSTextView/HEAD/Demo/FSTextView.xcodeproj/project.xcworkspace/xcuserdata/Allen.xcuserdatad/UserInterfaceState.xcuserstate -------------------------------------------------------------------------------- /Demo/FSTextView.xcodeproj/project.xcworkspace/xcuserdata/Steven.xcuserdatad/UserInterfaceState.xcuserstate: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/lifution/FSTextView/HEAD/Demo/FSTextView.xcodeproj/project.xcworkspace/xcuserdata/Steven.xcuserdatad/UserInterfaceState.xcuserstate -------------------------------------------------------------------------------- /Demo/FSTextView.xcodeproj/project.xcworkspace/xcuserdata/sheng.xcuserdatad/UserInterfaceState.xcuserstate: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/lifution/FSTextView/HEAD/Demo/FSTextView.xcodeproj/project.xcworkspace/xcuserdata/sheng.xcuserdatad/UserInterfaceState.xcuserstate -------------------------------------------------------------------------------- /Demo/FSTextView.xcodeproj/project.xcworkspace/xcuserdata/fusheng.xcuserdatad/UserInterfaceState.xcuserstate: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/lifution/FSTextView/HEAD/Demo/FSTextView.xcodeproj/project.xcworkspace/xcuserdata/fusheng.xcuserdatad/UserInterfaceState.xcuserstate -------------------------------------------------------------------------------- /Demo/FSTextView/ViewController.h: -------------------------------------------------------------------------------- 1 | // 2 | // ViewController.h 3 | // FSTextView 4 | // 5 | // Created by Sheng on 2016/9/27. 6 | // Copyright © 2016年 Sheng. All rights reserved. 7 | // 8 | 9 | #import 10 | 11 | @interface ViewController : UIViewController 12 | 13 | @end 14 | 15 | -------------------------------------------------------------------------------- /Demo/FSTextView/RootViewController.h: -------------------------------------------------------------------------------- 1 | // 2 | // RootViewController.h 3 | // FSTextView 4 | // 5 | // Created by Sheng on 2018/11/10. 6 | // Copyright © 2018年 Sheng. All rights reserved. 7 | // 8 | 9 | #import 10 | 11 | @interface RootViewController : UITableViewController 12 | 13 | @end 14 | -------------------------------------------------------------------------------- /Demo/FSTextView/AppDelegate.h: -------------------------------------------------------------------------------- 1 | // 2 | // AppDelegate.h 3 | // FSTextView 4 | // 5 | // Created by Sheng on 2016/9/27. 6 | // Copyright © 2016年 Sheng. All rights reserved. 7 | // 8 | 9 | #import 10 | 11 | @interface AppDelegate : UIResponder 12 | 13 | @property (strong, nonatomic) UIWindow *window; 14 | 15 | 16 | @end 17 | 18 | -------------------------------------------------------------------------------- /Demo/FSTextView/main.m: -------------------------------------------------------------------------------- 1 | // 2 | // main.m 3 | // FSTextView 4 | // 5 | // Created by Sheng on 2016/9/27. 6 | // Copyright © 2016年 Sheng. All rights reserved. 7 | // 8 | 9 | #import 10 | #import "AppDelegate.h" 11 | 12 | int main(int argc, char * argv[]) { 13 | @autoreleasepool { 14 | return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class])); 15 | } 16 | } 17 | -------------------------------------------------------------------------------- /Demo/FSTextView.xcodeproj/xcuserdata/fusheng.xcuserdatad/xcschemes/xcschememanagement.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | SchemeUserState 6 | 7 | FSTextView.xcscheme 8 | 9 | orderHint 10 | 0 11 | 12 | 13 | 14 | 15 | -------------------------------------------------------------------------------- /Demo/FSTextView.xcodeproj/xcuserdata/sheng.xcuserdatad/xcschemes/xcschememanagement.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | SchemeUserState 6 | 7 | FSTextView.xcscheme_^#shared#^_ 8 | 9 | orderHint 10 | 0 11 | 12 | 13 | 14 | 15 | -------------------------------------------------------------------------------- /FSTextView.podspec: -------------------------------------------------------------------------------- 1 | Pod::Spec.new do |s| 2 | s.name = "FSTextView" 3 | s.version = "1.8" 4 | s.summary = "Subclass of UITextView with Placeholder." 5 | s.license = { :type => "MIT", :file => "LICENSE" } 6 | s.homepage = "https://github.com/lifution/FSTextView" 7 | s.author = { "fusheng" => "lifution@icloud.com" } 8 | s.source = { :git => "https://github.com/lifution/FSTextView.git", :tag => "1.8" } 9 | s.requires_arc = true 10 | s.platform = :ios, "6.0" 11 | s.source_files = "FSTextView/*", "*.{h,m}" 12 | end -------------------------------------------------------------------------------- /Demo/FSTextView.xcodeproj/xcuserdata/Allen.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | 8 | 14 | 15 | 16 | 17 | 18 | -------------------------------------------------------------------------------- /Demo/FSTextView.xcodeproj/xcuserdata/Allen.xcuserdatad/xcschemes/xcschememanagement.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | SchemeUserState 6 | 7 | FSTextView.xcscheme 8 | 9 | orderHint 10 | 0 11 | 12 | 13 | SuppressBuildableAutocreation 14 | 15 | B0D793C61D9A9CC000DCF067 16 | 17 | primary 18 | 19 | 20 | 21 | 22 | 23 | -------------------------------------------------------------------------------- /Demo/FSTextView.xcodeproj/xcuserdata/Steven.xcuserdatad/xcschemes/xcschememanagement.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | SchemeUserState 6 | 7 | FSTextView.xcscheme 8 | 9 | orderHint 10 | 0 11 | 12 | 13 | SuppressBuildableAutocreation 14 | 15 | B0D793C61D9A9CC000DCF067 16 | 17 | primary 18 | 19 | 20 | 21 | 22 | 23 | -------------------------------------------------------------------------------- /Demo/FSTextView/RootViewController.m: -------------------------------------------------------------------------------- 1 | // 2 | // RootViewController.m 3 | // FSTextView 4 | // 5 | // Created by Sheng on 2018/11/10. 6 | // Copyright © 2018年 Sheng. All rights reserved. 7 | // 8 | 9 | #import "RootViewController.h" 10 | 11 | @interface RootViewController () 12 | 13 | @end 14 | 15 | @implementation RootViewController 16 | 17 | - (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section 18 | { 19 | return 10.0; 20 | } 21 | 22 | - (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section 23 | { 24 | return nil; 25 | } 26 | 27 | - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 28 | { 29 | [tableView deselectRowAtIndexPath:indexPath animated:YES]; 30 | } 31 | 32 | @end 33 | -------------------------------------------------------------------------------- /Demo/FSTextView/Assets.xcassets/AppIcon.appiconset/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "images" : [ 3 | { 4 | "idiom" : "iphone", 5 | "size" : "29x29", 6 | "scale" : "2x" 7 | }, 8 | { 9 | "idiom" : "iphone", 10 | "size" : "29x29", 11 | "scale" : "3x" 12 | }, 13 | { 14 | "idiom" : "iphone", 15 | "size" : "40x40", 16 | "scale" : "2x" 17 | }, 18 | { 19 | "idiom" : "iphone", 20 | "size" : "40x40", 21 | "scale" : "3x" 22 | }, 23 | { 24 | "idiom" : "iphone", 25 | "size" : "60x60", 26 | "scale" : "2x" 27 | }, 28 | { 29 | "idiom" : "iphone", 30 | "size" : "60x60", 31 | "scale" : "3x" 32 | } 33 | ], 34 | "info" : { 35 | "version" : 1, 36 | "author" : "xcode" 37 | } 38 | } -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | The MIT License (MIT) 2 | 3 | Copyright (c) 2016 FSTextView (https://github.com/lifution) 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in 13 | all copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 21 | THE SOFTWARE. 22 | -------------------------------------------------------------------------------- /Demo/FSTextView/Info.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | en 7 | CFBundleExecutable 8 | $(EXECUTABLE_NAME) 9 | CFBundleIdentifier 10 | $(PRODUCT_BUNDLE_IDENTIFIER) 11 | CFBundleInfoDictionaryVersion 12 | 6.0 13 | CFBundleName 14 | $(PRODUCT_NAME) 15 | CFBundlePackageType 16 | APPL 17 | CFBundleShortVersionString 18 | 1.0 19 | CFBundleSignature 20 | ???? 21 | CFBundleVersion 22 | 1 23 | LSRequiresIPhoneOS 24 | 25 | UILaunchStoryboardName 26 | LaunchScreen 27 | UIMainStoryboardFile 28 | Main 29 | UIRequiredDeviceCapabilities 30 | 31 | armv7 32 | 33 | UISupportedInterfaceOrientations 34 | 35 | UIInterfaceOrientationPortrait 36 | UIInterfaceOrientationLandscapeLeft 37 | UIInterfaceOrientationLandscapeRight 38 | 39 | 40 | 41 | -------------------------------------------------------------------------------- /Demo/FSTextView/Base.lproj/LaunchScreen.storyboard: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | -------------------------------------------------------------------------------- /FSTextView/FSTextView.h: -------------------------------------------------------------------------------- 1 | // 2 | // FSTextView.h 3 | // FSTextView 4 | // 5 | // Created by Sheng on 2016/9/27. 6 | // Copyright © 2016年 Sheng. All rights reserved. 7 | // 8 | 9 | #import 10 | @class FSTextView; 11 | 12 | typedef void(^FSTextViewHandler)(FSTextView *textView); 13 | 14 | IB_DESIGNABLE 15 | 16 | @interface FSTextView : UITextView 17 | 18 | /** 19 | 便利构造器. 20 | */ 21 | + (instancetype)textView; 22 | 23 | /** 24 | 设定文本改变Block回调. (切记弱化引用, 以免造成内存泄露.) 25 | */ 26 | - (void)addTextDidChangeHandler:(FSTextViewHandler)eventHandler; 27 | 28 | /** 29 | 设定达到最大长度Block回调. (切记弱化引用, 以免造成内存泄露.) 30 | */ 31 | - (void)addTextLengthDidMaxHandler:(FSTextViewHandler)maxHandler; 32 | 33 | /** 34 | 最大限制文本长度, 默认为无穷大, 即不限制, 如果被设为 0 也同样表示不限制字符数. 35 | */ 36 | @property (nonatomic, assign) IBInspectable NSUInteger maxLength; 37 | 38 | /** 39 | 圆角半径. 40 | */ 41 | @property (nonatomic, assign) IBInspectable CGFloat cornerRadius; 42 | 43 | /** 44 | 边框宽度. 45 | */ 46 | @property (nonatomic, assign) IBInspectable CGFloat borderWidth; 47 | 48 | /** 49 | 边框颜色. 50 | */ 51 | @property (nonatomic, strong) IBInspectable UIColor *borderColor; 52 | 53 | /** 54 | placeholder, 会自适应TextView宽高以及横竖屏切换, 字体默认和TextView一致. 55 | */ 56 | @property (nonatomic, copy) IBInspectable NSString *placeholder; 57 | 58 | /** 59 | placeholder文本颜色, 默认为#C7C7CD. 60 | */ 61 | @property (nonatomic, strong) IBInspectable UIColor *placeholderColor; 62 | 63 | /** 64 | placeholder文本字体, 默认为UITextView的默认字体. 65 | */ 66 | @property (nonatomic, strong) UIFont *placeholderFont; 67 | 68 | /** 69 | 是否允许长按弹出UIMenuController, 默认为YES. 70 | */ 71 | @property (nonatomic, assign, getter=isCanPerformAction) BOOL canPerformAction; 72 | 73 | /** 74 | 该属性返回一个经过处理的 `self.text` 的值, 去除了首位的空格和换行. 75 | */ 76 | @property (nonatomic, readonly) NSString *formatText; 77 | 78 | @end 79 | -------------------------------------------------------------------------------- /Demo/FSTextView/AppDelegate.m: -------------------------------------------------------------------------------- 1 | // 2 | // AppDelegate.m 3 | // FSTextView 4 | // 5 | // Created by Sheng on 2016/9/27. 6 | // Copyright © 2016年 Sheng. All rights reserved. 7 | // 8 | 9 | #import "AppDelegate.h" 10 | 11 | @interface AppDelegate () 12 | 13 | @end 14 | 15 | @implementation AppDelegate 16 | 17 | 18 | - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { 19 | // Override point for customization after application launch. 20 | return YES; 21 | } 22 | 23 | - (void)applicationWillResignActive:(UIApplication *)application { 24 | // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state. 25 | // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game. 26 | } 27 | 28 | - (void)applicationDidEnterBackground:(UIApplication *)application { 29 | // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. 30 | // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits. 31 | } 32 | 33 | - (void)applicationWillEnterForeground:(UIApplication *)application { 34 | // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background. 35 | } 36 | 37 | - (void)applicationDidBecomeActive:(UIApplication *)application { 38 | // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface. 39 | } 40 | 41 | - (void)applicationWillTerminate:(UIApplication *)application { 42 | // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:. 43 | } 44 | 45 | @end 46 | -------------------------------------------------------------------------------- /Demo/FSTextView/ViewController.m: -------------------------------------------------------------------------------- 1 | // 2 | // ViewController.m 3 | // FSTextView 4 | // 5 | // Created by Sheng on 2016/9/27. 6 | // Copyright © 2016年 Sheng. All rights reserved. 7 | // 8 | 9 | #import "ViewController.h" 10 | #import "FSTextView.h" 11 | 12 | @interface ViewController () 13 | 14 | @end 15 | 16 | @implementation ViewController 17 | 18 | - (void)viewDidLoad 19 | { 20 | [super viewDidLoad]; 21 | 22 | // 达到最大限制时提示的Label 23 | UILabel *noticeLabel = [[UILabel alloc] init]; 24 | noticeLabel.font = [UIFont systemFontOfSize:14.f]; 25 | noticeLabel.textColor = UIColor.redColor; 26 | [self.view addSubview:noticeLabel]; 27 | 28 | // FSTextView 29 | FSTextView *textView = [FSTextView textView]; 30 | textView.placeholder = @"这是一个继承于UITextView的带Placeholder的自定义TextView, 可以设定限制字符长度, 以Block形式回调, 简单直观!"; 31 | textView.borderWidth = 1.f; 32 | textView.borderColor = UIColor.lightGrayColor; 33 | textView.cornerRadius = 5.f; 34 | textView.canPerformAction = NO; 35 | [self.view addSubview:textView]; 36 | // 限制输入最大字符数. 37 | textView.maxLength = 10; 38 | // 添加输入改变Block回调. 39 | [textView addTextDidChangeHandler:^(FSTextView *textView) { 40 | noticeLabel.hidden = (textView.text.length < textView.maxLength); 41 | }]; 42 | // 添加到达最大限制Block回调. 43 | [textView addTextLengthDidMaxHandler:^(FSTextView *textView) { 44 | noticeLabel.text = [NSString stringWithFormat:@"最多限制输入%zi个字符", textView.maxLength]; 45 | noticeLabel.hidden = NO; 46 | }]; 47 | 48 | // constraint 49 | textView.translatesAutoresizingMaskIntoConstraints = NO; 50 | noticeLabel.translatesAutoresizingMaskIntoConstraints = NO; 51 | [self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-30-[textView]-30-|" 52 | options:kNilOptions 53 | metrics:nil 54 | views:NSDictionaryOfVariableBindings(textView)]]; 55 | [self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-100-[textView(==100)]-8-[noticeLabel]" 56 | options:kNilOptions 57 | metrics:nil 58 | views:NSDictionaryOfVariableBindings(textView, noticeLabel)]]; 59 | [self.view addConstraint:[NSLayoutConstraint constraintWithItem:noticeLabel 60 | attribute:NSLayoutAttributeCenterX 61 | relatedBy:NSLayoutRelationEqual 62 | toItem:self.view 63 | attribute:NSLayoutAttributeCenterX 64 | multiplier:1.f 65 | constant:0.f]]; 66 | } 67 | 68 | - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 69 | { 70 | [super touchesBegan:touches withEvent:event]; 71 | [self.view endEditing:YES]; 72 | } 73 | 74 | @end 75 | -------------------------------------------------------------------------------- /Demo/FSTextView.xcodeproj/xcuserdata/Steven.xcuserdatad/xcschemes/FSTextView.xcscheme: -------------------------------------------------------------------------------- 1 | 2 | 5 | 8 | 9 | 15 | 21 | 22 | 23 | 24 | 25 | 30 | 31 | 32 | 33 | 39 | 40 | 41 | 42 | 43 | 44 | 54 | 56 | 62 | 63 | 64 | 65 | 66 | 67 | 73 | 75 | 81 | 82 | 83 | 84 | 86 | 87 | 90 | 91 | 92 | -------------------------------------------------------------------------------- /Demo/FSTextView.xcodeproj/xcuserdata/Allen.xcuserdatad/xcschemes/FSTextView.xcscheme: -------------------------------------------------------------------------------- 1 | 2 | 5 | 8 | 9 | 15 | 21 | 22 | 23 | 24 | 25 | 30 | 31 | 32 | 33 | 39 | 40 | 41 | 42 | 43 | 44 | 54 | 56 | 62 | 63 | 64 | 65 | 69 | 70 | 71 | 72 | 78 | 80 | 86 | 87 | 88 | 89 | 91 | 92 | 95 | 96 | 97 | -------------------------------------------------------------------------------- /FSTextView/FSTextView.m: -------------------------------------------------------------------------------- 1 | // 2 | // FSTextView.m 3 | // FSTextView 4 | // 5 | // Created by Sheng on 2016/9/27. 6 | // Copyright © 2016年 Sheng. All rights reserved. 7 | // 8 | 9 | #import "FSTextView.h" 10 | 11 | CGFloat const kFSTextViewPlaceholderVerticalMargin = 8.0; ///< placeholder垂直方向边距 12 | CGFloat const kFSTextViewPlaceholderHorizontalMargin = 6.0; ///< placeholder水平方向边距 13 | 14 | @interface FSTextView () 15 | 16 | @property (nonatomic, copy) FSTextViewHandler changeHandler; ///< 文本改变Block 17 | @property (nonatomic, copy) FSTextViewHandler maxHandler; ///< 达到最大限制字符数Block 18 | @property (nonatomic, strong) UILabel *placeholderLabel; ///< placeholderLabel 19 | 20 | @end 21 | 22 | @implementation FSTextView 23 | 24 | #pragma mark - Override 25 | 26 | - (void)dealloc 27 | { 28 | [[NSNotificationCenter defaultCenter] removeObserver:self]; 29 | _changeHandler = NULL; 30 | _maxHandler = NULL; 31 | } 32 | 33 | - (instancetype)initWithCoder:(NSCoder *)aDecoder 34 | { 35 | if (!(self = [super initWithCoder:aDecoder])) return nil; 36 | 37 | if ([[[UIDevice currentDevice] systemVersion] compare:@"10.0" options:NSNumericSearch] != NSOrderedAscending) { 38 | 39 | [self layoutIfNeeded]; 40 | } 41 | 42 | [self initialize]; 43 | 44 | return self; 45 | } 46 | 47 | - (instancetype)initWithFrame:(CGRect)frame 48 | { 49 | if (!(self = [super initWithFrame:frame])) return nil; 50 | 51 | [self initialize]; 52 | 53 | return self; 54 | } 55 | 56 | - (BOOL)becomeFirstResponder 57 | { 58 | BOOL become = [super becomeFirstResponder]; 59 | 60 | // 成为第一响应者时注册通知监听文本变化 61 | [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(textDidChange:) name:UITextViewTextDidChangeNotification object:nil]; 62 | 63 | return become; 64 | } 65 | 66 | - (BOOL)resignFirstResponder 67 | { 68 | BOOL resign = [super resignFirstResponder]; 69 | 70 | // 注销第一响应者时移除文本变化的通知, 以免影响其它的`UITextView`对象. 71 | [[NSNotificationCenter defaultCenter] removeObserver:self name:UITextViewTextDidChangeNotification object:nil]; 72 | 73 | return resign; 74 | } 75 | 76 | - (BOOL)canPerformAction:(SEL)action withSender:(id)sender 77 | { 78 | BOOL result = [super canPerformAction:action withSender:sender]; 79 | 80 | if (result) { 81 | if (![self respondsToSelector:action]) { 82 | result = NO; 83 | } else { 84 | result = _canPerformAction; 85 | } 86 | } 87 | 88 | return result; 89 | } 90 | 91 | #pragma mark - Private 92 | 93 | - (void)initialize 94 | { 95 | // 基本配置 (需判断是否在Storyboard中设置了值) 96 | _canPerformAction = YES; 97 | 98 | if (_maxLength == 0 || _maxLength == NSNotFound) { 99 | 100 | _maxLength = NSUIntegerMax; 101 | } 102 | 103 | if (!_placeholderColor) { 104 | 105 | _placeholderColor = [UIColor colorWithRed:0.780 green:0.780 blue:0.804 alpha:1.000]; 106 | } 107 | 108 | // 基本设定 (需判断是否在Storyboard中设置了值) 109 | if (!self.backgroundColor) { 110 | 111 | self.backgroundColor = [UIColor whiteColor]; 112 | } 113 | 114 | if (!self.font) { 115 | 116 | self.font = [UIFont systemFontOfSize:15.f]; 117 | } 118 | 119 | // placeholderLabel 120 | self.placeholderLabel.font = self.font; 121 | self.placeholderLabel.text = _placeholder; // 可能在Storyboard中设置了Placeholder 122 | self.placeholderLabel.textColor = _placeholderColor; 123 | [self addSubview:self.placeholderLabel]; 124 | 125 | // constraint 126 | [self addConstraint:[NSLayoutConstraint constraintWithItem:self.placeholderLabel 127 | attribute:NSLayoutAttributeTop 128 | relatedBy:NSLayoutRelationEqual 129 | toItem:self 130 | attribute:NSLayoutAttributeTop 131 | multiplier:1.0 132 | constant:kFSTextViewPlaceholderVerticalMargin]]; 133 | [self addConstraint:[NSLayoutConstraint constraintWithItem:self.placeholderLabel 134 | attribute:NSLayoutAttributeLeft 135 | relatedBy:NSLayoutRelationEqual 136 | toItem:self 137 | attribute:NSLayoutAttributeLeft 138 | multiplier:1.0 139 | constant:kFSTextViewPlaceholderHorizontalMargin]]; 140 | [self addConstraint:[NSLayoutConstraint constraintWithItem:self.placeholderLabel 141 | attribute:NSLayoutAttributeWidth 142 | relatedBy:NSLayoutRelationLessThanOrEqual 143 | toItem:self 144 | attribute:NSLayoutAttributeWidth 145 | multiplier:1.0 146 | constant:-kFSTextViewPlaceholderHorizontalMargin*2]]; 147 | [self addConstraint:[NSLayoutConstraint constraintWithItem:self.placeholderLabel 148 | attribute:NSLayoutAttributeHeight 149 | relatedBy:NSLayoutRelationLessThanOrEqual 150 | toItem:self 151 | attribute:NSLayoutAttributeHeight 152 | multiplier:1.0 153 | constant:-kFSTextViewPlaceholderVerticalMargin*2]]; 154 | } 155 | 156 | #pragma mark - Getter 157 | /// 返回一个经过处理的 `self.text` 的值, 去除了首位的空格和换行. 158 | - (NSString *)formatText 159 | { 160 | return [[super text] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; // 去除首尾的空格和换行. 161 | } 162 | 163 | - (UILabel *)placeholderLabel 164 | { 165 | if (!_placeholderLabel) { 166 | 167 | _placeholderLabel = [[UILabel alloc] init]; 168 | _placeholderLabel.numberOfLines = 0; 169 | _placeholderLabel.translatesAutoresizingMaskIntoConstraints = NO; 170 | } 171 | 172 | return _placeholderLabel; 173 | } 174 | 175 | #pragma mark - Setter 176 | 177 | - (void)setText:(NSString *)text 178 | { 179 | [super setText:text]; 180 | 181 | self.placeholderLabel.hidden = [@(text.length) boolValue]; 182 | // 手动模拟触发通知 183 | NSNotification *notification = [NSNotification notificationWithName:UITextViewTextDidChangeNotification object:self]; 184 | [self textDidChange:notification]; 185 | } 186 | 187 | - (void)setFont:(UIFont *)font 188 | { 189 | [super setFont:font]; 190 | 191 | self.placeholderLabel.font = font; 192 | } 193 | 194 | - (void)setMaxLength:(NSUInteger)maxLength 195 | { 196 | _maxLength = fmax(0, maxLength); 197 | self.text = self.text; 198 | } 199 | 200 | - (void)setCornerRadius:(CGFloat)cornerRadius 201 | { 202 | _cornerRadius = cornerRadius; 203 | self.layer.cornerRadius = _cornerRadius; 204 | } 205 | 206 | - (void)setBorderColor:(UIColor *)borderColor 207 | { 208 | if (!borderColor) return; 209 | 210 | _borderColor = borderColor; 211 | self.layer.borderColor = _borderColor.CGColor; 212 | } 213 | 214 | - (void)setBorderWidth:(CGFloat)borderWidth 215 | { 216 | _borderWidth = borderWidth; 217 | self.layer.borderWidth = _borderWidth; 218 | } 219 | 220 | - (void)setPlaceholder:(NSString *)placeholder 221 | { 222 | if (!placeholder) return; 223 | 224 | _placeholder = [placeholder copy]; 225 | 226 | if (_placeholder.length > 0) { 227 | 228 | self.placeholderLabel.text = _placeholder; 229 | } 230 | } 231 | 232 | - (void)setPlaceholderColor:(UIColor *)placeholderColor 233 | { 234 | if (!placeholderColor) return; 235 | 236 | _placeholderColor = placeholderColor; 237 | 238 | self.placeholderLabel.textColor = _placeholderColor; 239 | } 240 | 241 | - (void)setPlaceholderFont:(UIFont *)placeholderFont 242 | { 243 | if (!placeholderFont) return; 244 | 245 | _placeholderFont = placeholderFont; 246 | 247 | self.placeholderLabel.font = _placeholderFont; 248 | } 249 | 250 | #pragma mark - NSNotification 251 | - (void)textDidChange:(NSNotification *)notification 252 | { 253 | // 通知回调的实例的不是当前实例的话直接返回 254 | if (notification.object != self) return; 255 | 256 | // 根据字符数量显示或者隐藏 `placeholderLabel` 257 | self.placeholderLabel.hidden = [@(self.text.length) boolValue]; 258 | 259 | // 禁止第一个字符输入空格或者换行 260 | if (self.text.length == 1) { 261 | 262 | if ([self.text isEqualToString:@" "] || [self.text isEqualToString:@"\n"]) { 263 | 264 | self.text = @""; 265 | } 266 | } 267 | 268 | // 只有当maxLength字段的值不为无穷大整型也不为0时才计算限制字符数. 269 | if (_maxLength != NSUIntegerMax && _maxLength != 0 && self.text.length > 0) { 270 | 271 | if (!self.markedTextRange && self.text.length > _maxLength) { 272 | 273 | !_maxHandler ?: _maxHandler(self); // 回调达到最大限制的Block. 274 | self.text = [self.text substringToIndex:_maxLength]; // 截取最大限制字符数. 275 | [self.undoManager removeAllActions]; // 达到最大字符数后清空所有 undoaction, 以免 undo 操作造成crash. 276 | } 277 | } 278 | 279 | // 回调文本改变的Block. 280 | !_changeHandler ?: _changeHandler(self); 281 | } 282 | 283 | #pragma mark - Public 284 | 285 | + (instancetype)textView 286 | { 287 | return [[self alloc] init]; 288 | } 289 | 290 | - (void)addTextDidChangeHandler:(FSTextViewHandler)changeHandler 291 | { 292 | _changeHandler = [changeHandler copy]; 293 | } 294 | 295 | - (void)addTextLengthDidMaxHandler:(FSTextViewHandler)maxHandler 296 | { 297 | _maxHandler = [maxHandler copy]; 298 | } 299 | 300 | @end 301 | -------------------------------------------------------------------------------- /Demo/FSTextView/Base.lproj/Main.storyboard: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | 116 | 117 | 118 | 119 | 120 | 121 | 122 | 123 | 124 | 125 | 126 | 127 | 128 | 129 | 130 | 131 | 132 | 133 | 134 | 135 | 136 | 137 | 138 | 139 | 140 | 141 | 142 | 143 | 144 | 145 | 146 | 147 | 148 | 149 | 150 | 151 | 152 | 153 | 154 | 155 | 156 | 157 | 158 | 159 | 160 | 161 | 162 | 163 | 164 | 165 | 166 | -------------------------------------------------------------------------------- /Demo/FSTextView.xcodeproj/project.pbxproj: -------------------------------------------------------------------------------- 1 | // !$*UTF8*$! 2 | { 3 | archiveVersion = 1; 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