【移动应用开发技术】 iOS UITextField或UITextView的内容是否为空

【移动应用开发技术】iOSUITextField或UITextView的内容是否为空

//判断正在编辑的UITextField或UITextView的内容是否为空，判断正在编辑的UITextField或UITextView的内容是否为空，以此来控制button的点亮状态#pragmamark-UITextFieldDelegate-(BOOL)textField:(UITextField

*)textFieldshouldChangeCharactersInRange:(NSRange)rangereplacementString:(NSString

*)string{

NSMutableString

*changedString=[[NSMutableString

alloc]initWithString:textField.text];

[changedString

replaceCharactersInRange:range

withString:string];

if

(changedString.length!=0){

self.navigationItem.rightBarButtonItem.enabled=YES;

}else{

self.navigationItem.rightBarButtonItem.enabled=NO;

}

returnYES;}#pragmamark-UITextViewDelegate-(BOOL)textView:(UITextView

*)textViewshouldChangeTextInRange:(NSRange)rangereplacementText:(NSString*)text{

NSMutableString

*changedString=[[NSMutableString

alloc]initWithString:textView.text];

[changedString

replaceCharactersInRange:range

withString:text];

if

(changedString.length!=0){

self.navigationItem.rightBarButtonItem.enabled=YES;

}else{

self.navigationItem.rightBarButtonItem.enabled=NO;

}

returnYES;}//一些判断技巧-(BOOL)verifyData{

if(tfPostName.text.length<1){

//01

tfPostName.layer.borderColor=[UIColorredColor].CGColor;

tfPostName.layer.borderWidth=1.0;

tfPostName.layer.cornerRadius=5.0;

returnNO;

}

elseif(tfPositionType.text.length<1){

//02

tfPositionType.layer.borderColor=[UIColorredColor].CGColor;

tfPositionType.layer.borderWidth=1.0;

tfPositionType.layer.cornerRadius=5.0;

returnNO;

}

elseif(tfPeopleNum.text.length<1){

//03

tfPeopleNum.layer.borderColor=[UIColorredColor].CGColor;

tfPeopleNum.layer.borderWidth=1.0;

tfPeopleNum.layer.cornerRadius=5.0;

returnNO;

}

elseif(tfWages.text.length<1){

//04

tfWages.layer.borderColor=[UIColorredColor].CGColor;

tfWages.layer.borderWidth=1.0;

tfWages.layer.cornerRadius=5.0;

returnNO;

}elseif(tfUnit.text.length<1){

//05

tfUnit.layer.borderColor=[UIColorredColor].CGColor;

tfUnit.layer.borderWidth=1.0;

tfUnit.layer.cornerRadius=5.0;

returnNO;

}elseif(tfStartDate.text.length<1){

//07

tfStartDate.layer.borderColor=[UIColorredColor].CGColor;

tfStartDate.layer.borderWidth=1.0;

tfStartDate.layer.cornerRadius=5.0;

returnNO;

}elseif(tfEndDate.text.length<1){

//08

tfEndDate.layer.borderColor=[UIColorredColor].CGColor;

tfEndDate.layer.borderWidth=1.0;

tfEndDate.layer.cornerRadius=5.0;

returnNO;

}elseif(tfSescribe.text.length<1){

//09

tfSescribe.layer.borderColor=[UIColorredColor].CGColor;

tfSescribe.layer.borderWidth=1.0;

tfSescribe.layer.cornerRadius=5.0;

//tfSescribe.text.length==0;

returnNO;

}//

}elseif(tfPayWay.text.length<1){

//tfSescribe

//

//10--//

tfPayWay.layer.borderColor=[UIColorredColor].CGColor;//

tfPayWay.layer.borderWidth=1.0;//

tfPayWay.layer.cornerRadius=5.0;//

returnNO;//

//

}

elseif(tfContactPerson.text.length<1){

//11

tfContactPerson.layer.borderColor=[UIColorredColor].CGColor;

tfContactPerson.layer.borderWidth=1.0;

tfContactPerson.layer.cornerRadius=5.0;

returnNO;

}

elseif(tfContactPhone.text.length<1){

//12--

tfContactPhone.layer.borderColor=[UIColorredColor].CGColor;

tfContactPhone.layer.borderWidth=1.0;

tfContactPhone.layer.cornerRadius=5.0;

returnNO;

}elseif(tfJobArea.text.length<1){

//13

tfJobArea.layer.borderColor=[UIColorredColor].CGColor;

tfJobArea.layer.borderWidth=1.0;

tfJobArea.layer.cornerRadius=5.0;

returnNO;

}

elseif(tfDetailAddress.text.length<1){

//14--

tfDetailAddress.layer.borderColor=[UIColorredColor].CGColor;

tfDetailAddress.layer.borderWidth=1.0;

tfDetailAddress.layer.cornerRadius=5.0;

returnNO;

}elseif(tfUnit.text.length<1){

//15

tfUnit.layer.borderColor=[UIColorredColor].CGColor;

tfUnit.layer.borderWidth=1.0;

tfUnit.layer.cornerRadius=5.0;

returnNO;

}

else{

returnYES;

}

}//岗位描述不能为空的判断#pragmamark-UITextViewDelegate-(BOOL)textView:(UITextView*)textViewshouldChangeTextInRange:(NSRange)rangereplacementText:(NSString*)text{

NSMutableString*changedString=[[NSMutableStringalloc]initWithString:tfSescribe.text];

[changedStringreplaceCharactersInRange:rangewithString:text];

if(changedString.length<1){

//self.navigationItem.rightBarButtonItem.e