How to add amount into UITextField on click of UIButton - ios

Question

I have aUITextField and below that 3 button. User can enter the amount inUITextField. And When user clicked the button belowUITextField it will add the amount inUITextField with amount written in button.
First button will add 100, Second will add 500 ad 3rd will add 1000. What is the best method to achieve it.
I try to implement following but got button.tag=0
/*Amount increment*/
- (IBAction)Btn_Incr100:(id)sender {
[self addTextFieldValue:nil];
}
- (IBAction)Btn_Incr500:(id)sender {
[self addTextFieldValue:nil];
}
- (IBAction)Btn_Incr1000:(id)sender {
[self addTextFieldValue:nil];
}
-(void)tagNumber{
Btn_Incr100.tag=1;
Btn_Incr500.tag=2;
Btn_Incr1000.tag=3;
}
-(void) addTextFieldValue:(UIButton*) button
{
int amount=[Txt_Amount.text intValue];
int AddAmount;
NSLog(#"button.tag%d",button.tag);
if (button.tag==1) {
AddAmount=100;
}
else if (button.tag==2) {
AddAmount=500;
}
else if(button.tag==3) {
AddAmount=1000;
}else{
AddAmount=0;
}
amount=amount+AddAmount;
Txt_Amount.text=[NSString stringWithFormat:#"%d",amount];
NSLog(#"%d",amount);
NSLog(#"%#",Txt_Amount.text);
}

Answer 1

Try using it by implementing tag
- (void)viewDidLoad {
[super viewDidLoad];
[self tagNumber];
}
-(void)tagNumber{
Btn_Incr100.tag=1;
Btn_Incr500.tag=2;
Btn_Incr1000.tag=3;
}
-(void) addTextFieldValue:(UIButton*) button
{
int amount=[Txt_Amount.text intValue];
int AddAmount;
int buttonTagIndex = button.tag;
switch (buttonTagIndex) {
case 1:
AddAmount=100;
break;
case 2:
AddAmount=500;
break;
case 3:
AddAmount=1000;
break;
default:
AddAmount=0;
break;
}
amount=amount+AddAmount;
Txt_Amount.text=[NSString stringWithFormat:#"%d",amount];
}
- (IBAction)btnAmountClick:(id)sender{
UIButton *button = sender;
[self addTextFieldValue:button];
}

Answer 2

With the help of this you can achieve:
-(void)displayvalue:(id)sender {
UIButton *resultButton = (UIButton *)sender;
NSLog(#" The button's title is %#." resultButton.currentTitle);
}
and now you can set this text inside your textfield.

Answer 3

Add this method as every button action.
-(void) addTextFieldValue:(UIButton*) button
{
NSString *string;
if ([button.text hasPrefix:#"+"] && [button.text length] > 1)
{
string = [string substringFromIndex:1];
}
int textFieldValue =[textField.text integerValue] + string.integerValue;
textField setText:[NSString stringWithFormat:#"%i",textFieldValue];
}

Answer 4

NSString *string;
if ([button.text hasPrefix:#"+"] && [button.text length] > 1)
{
string = [string substringFromIndex:1];
}
int textFieldValue =[textField.text integerValue] + string.integerValue;
textField setText:[NSString stringWithFormat:#"%i",textFieldValue];
or
connect separate actions
-(IBAction) onClick1: (id) sender]
{
NSLog(#"User clicked %#", sender);
textField.text = [textField.text integerValue] + 100
}

Answer 5

You can do this way -
The three buttons below your textfield, link them all to a common method say,
-(IBAction)addBtnClicked:(UIButton *)btn
Given tags to three buttons like for button 100,
btn1.tag=100..
then for button 500,
btn2.tag = 500..
then for button 1000, btn2.tag = 1000.
then in
-(IBAction)addBtnClicked:(UIButton *)btn
{
int value = -1;
if(btn.tag == 100)
{
value =[txtFldText.text intValue] + 100;
}
else if(btn.tag == 500)
{
value =[txtFldText.text intValue] + 500;
}
else if(btn.tag == 1000)
{
value =[txtFldText.text intValue] + 1000;
}
txtFldText.text = [NSString stringWithFormat:#"%d",value];
}

Answer 6

Simply you can do like this:
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
_txtAmount.text=#"0";
_btn100.tag=100;
_btn500.tag=500;
_btn1000.tag=1000;
}
- (IBAction)btnAmountClick:(id)sender
{
UIButton *btn=sender;
if (btn.tag==100)
{
[self addAmount:#"100"];
}
if (btn.tag==500)
{
[self addAmount:#"500"];
}
if (btn.tag==1000)
{
[self addAmount:#"1000"];
}
}
-(void)addAmount:(NSString*)strAmount
{
int amount=[_txtAmount.text intValue]+[strAmount intValue];
_txtAmount.text=[NSString stringWithFormat:#"%d",amount];
}

Answer 7

First set tag to every button like 0,1,2.
then connect IBOutlet of all button to single IBAction and
implement the IBAction as below.
- (IBAction)btnClicked:(id)sender
{
switch ([sender tag]) {
case 0:
{
NSString *s=self.txtField.text;
int add=[s intValue]+ 100;
self.txtField.text=[NSString stringWithFormat:#"%d",add];
break;
}
case 1:
{
NSString *s=self.txtField.text;
int add=[s intValue]+ 200;
self.txtField.text=[NSString stringWithFormat:#"%d",add];
}
break;
case 2:
{
NSString *s=self.txtField.text;
int add=[s intValue]+ 500;
self.txtField.text=[NSString stringWithFormat:#"%d",add];
}
break;
default:
break;
}
}

Answer 8

There's a better solution for this.
You can use tags smth differently, as they are.
Just tie your three buttons as actions to this method and set the tags to 100/500/1000
- (void)buttonAction:(id)sender {
textField.text = [NSString stringWithFormat:#"%li", (long)(textfield.text.intValue + sender.tag)];
}