Design of TextView with placeholder

Design of TextView with placeholder

Effect:

Source:

PlaceholderTextView.h and placeholdertextview.m

////PlaceholderTextView.h//Yxtextview////Created by youxianming on 14/12/23.//Copyright (c) 2014 youxianming. All rights reserved.//#import<UIKit/UIKit.h>@interfacePlaceholdertextview:uiview//Gets the string@property (Nonatomic, Strong,ReadOnly) NSString *string;//TextView@property (nonatomic, strong) Uitextview *TextView;//placeholder Characters@property (nonatomic, strong) NSString *placeholderstring;//text Edge left white@property (nonatomic, assign) uiedgeinsets Textcontainerinset;//Color Settings@property (nonatomic, strong) Uicolor *Edittextcolor, @property (nonatomic, strong) Uicolor*Placeholdercolor;//returns whether the key is used to cancel the first responder@property (nonatomic, assign) BOOL Returnbuttontoresignfirstresponder;//Cancel First Responder- (void) Resigntextviewfirstresponder;@end

////placeholdertextview.m//Yxtextview////Created by youxianming on 14/12/23.//Copyright (c) 2014 youxianming. All rights reserved.//#import "PlaceholderTextView.h"@interfacePlaceholdertextview () <UITextViewDelegate>@property (nonatomic, strong) NSString*string;@end@implementationPlaceholdertextview-(Instancetype) initWithFrame: (cgrect) frame{ Self=[Super Initwithframe:frame]; if(self) {[self createtextview]; }    returnSelf ;}- (void) Createtextview {Self.textview=[[Uitextview alloc] initWithFrame:self.bounds]; Self.textview.Delegate=Self ; Self.textView.backgroundColor=[Uicolor Clearcolor]; Self.textView.textColor=[Uicolor Graycolor]; [Self AddSubview:self.textView];}#pragmaMark-Proxy Method-(BOOL) textviewshouldbeginediting: (Uitextview *) TextView {//set edit state text colorTextview.textcolor = (Self.edittextcolor = = nil?)[Uicolor Blackcolor]: self.edittextcolor); //if the text is placeholder text    if([Textview.text isEqualToString:self.placeHolderString]) {Textview.text=@""; }        returnYES;}-(BOOL) textviewshouldendediting: (Uitextview *) TextView {//if the length is 0, the placeholder text is displayed    if(TextView.text.length = =0) {Textview.text=self.placeholderstring; Textview.textcolor= (Self.placeholdercolor = = nil?)[Uicolor Graycolor]: self.placeholdercolor); }        returnYES;}-(BOOL) TextView: (Uitextview *) TextView Shouldchangetextinrange: (nsrange) Range Replacementtext: (NSString *) Text {if(_returnbuttontoresignfirstresponder = =YES) {        if([Text isequaltostring:@"\ n"]) {[TextView resignfirstresponder]; returnNO; }    }        returnYES;}- (void) Resigntextviewfirstresponder {[Self.textview resignfirstresponder];}#pragmaMark-Overriding the Setter,getter method@synthesize string=_string;-(NSString *)string {    if([Self.textView.text isEqualToString:self.placeHolderString]) {return @""; } Else {        returnSelf.textView.text; }}@synthesizePlaceholdercolor =_placeholdercolor;- (void) Setplaceholdercolor: (Uicolor *) Placeholdercolor {_placeholdercolor=Placeholdercolor; Self.textView.textColor=_placeholdercolor;}-(Uicolor *) Placeholdercolor {return_placeholdercolor;}@synthesizePlaceholderstring =_placeholderstring;- (void) Setplaceholderstring: (NSString *) placeholderstring {_placeholderstring=placeholderstring; _textview.text=placeholderstring;}-(NSString *) placeholderstring {return_placeholderstring;}@synthesizeTextcontainerinset =_textcontainerinset;- (void) Settextcontainerinset: (uiedgeinsets) textcontainerinset {_textcontainerinset=Textcontainerinset; _textview.textcontainerinset=Textcontainerinset;}-(uiedgeinsets) textcontainerinset {return_textcontainerinset;}@end

Controller Source:

////VIEWCONTROLLER.M//Yxtextview////Created by youxianming on 14/12/23.//Copyright (c) 2014 youxianming. All rights reserved.//#import "ViewController.h"#import "PlaceholderTextView.h"@interfaceViewcontroller ()@end@implementationViewcontroller- (void) viewdidload {[Super viewdidload]; Self.view.backgroundColor=[Uicolor Blackcolor]; Placeholdertextview*textview = [[Placeholdertextview alloc] Initwithframe:cgrectmake (-1, -,322, -)];        [Self.view Addsubview:textview]; TextView.layer.borderWidth=1. F; TextView.layer.borderColor=[Uicolor Purplecolor].        Cgcolor; Textview.returnbuttontoresignfirstresponder=YES; TextView.textView.font= [Uifont fontwithname:@"Helveticaneue-thin"Size A. f]; Textview.placeholdercolor=[Uicolor Cyancolor]; Textview.edittextcolor=[Uicolor Redcolor]; Textview.textcontainerinset= Uiedgeinsetsmake (Ten,Ten,Ten,Ten); Textview.placeholderstring=@"Input your name, please ...";}@end

Some details to be aware of:

Design of TextView with placeholder