Set the warning box to the style with a ciphertext input box, and set the input box keyboard as the numeric keypad, judge the contents of the ciphertext input box, and pop up the corresponding prompt.

Project requirements

Set the warning box to the style with a ciphertext input box, and set the input box keyboard as the numeric keypad, judge the contents of the ciphertext input box, and pop up the corresponding prompt.

Nonsense not to say, directly on the question and answer code

#import "TableViewController.h"

@interface Tableviewcontroller () <UIAlertViewDelegate>

@property (nonatomic, Strong) Nsmutablearray * DATASOURCE;

-(ibaction) Buy: (ID) sender;

@end

@implementation Tableviewcontroller

-(void) Viewdidload {

[Super Viewdidload];

Self.title = @ "shopping list";

_datasource = [@[@{@ "name": @ "effective OBJECTIVE-C 2.0" @ "price": @ "￥55.20"},

@{@ "name": @ "iOS components and frames" @ "price": @ "￥71.80"},

@{@ "name": @ "ios Core Development Manual" @ "price": @ "￥98.20"},

@{@ "name": @ "iOS Development paradigm (Advanced article)", @ "price": @ "￥70.00"},

@{@ "name": @ "iOS Development advanced" @ "Price": @ "￥55.30"},

@{@ "name": @ "iOS Programming (4th Edition)" @ "Price": @ "￥81.20"},

@{@ "name": @ "Objective-c advanced programming iOS with OS X multithreading and memory Management" @ "price": @ "￥41.70"}] mutablecopy];

[Self.tableview Registerclass:[uitableviewcell class] forcellreuseidentifier:@ "Showcell"];

}

-(void) didreceivememorywarning {

[Super didreceivememorywarning];

}

#pragma mark-table View data source

-(Nsinteger) Numberofsectionsintableview: (UITableView *) TableView {

return 1;

}

-(Nsinteger) TableView: (UITableView *) TableView numberofrowsinsection: (nsinteger) Section {

return _datasource.count;

}

-(UITableViewCell *) TableView: (UITableView *) TableView Cellforrowatindexpath: (Nsindexpath *) Indexpath {

UITableViewCell *cell = [TableView dequeuereusablecellwithidentifier:@ "Showcell" Forindexpath:indexpath];

Cell.textLabel.text = _datasource[indexpath.row][@ "name"];

Cell.detailTextLabel.text = _datasource[indexpath.row][@ "Price"];

return cell;

}

-(ibaction) Buy: (ID) Sender {

Uialertview * Alert =

[[Uialertview alloc] initwithtitle:@ "Tips"

message:@ "Please enter your password"

Delegate:self

cancelbuttontitle:@ "OK"

Otherbuttontitles:nil, nil];

The

Start writing code, set warning box to style with one ciphertext input box

Alert

End_code

[Alert show];

No.2

Start writing code, set the input box keyboard as the numeric keypad.

Uitextfield * TextField =

End_code

}

-(void) Alertview: (Uialertview *) Alertview Clickedbuttonatindex: (Nsinteger) buttonindex{

NSString * title = @ "Hint";

NSString * message;

NSString * Cancelbuttontitle = @ "OK";

No.3

Start writing code to determine if the contents of the Ciphertext input box are @ "123456" and pop up a warning box to prompt @ "Password input error" or "Buy success"

Uitextfield * TextField =;

End_code

Uialertview * Wrongalert =

[[Uialertview alloc] Initwithtitle:title

Message:message

Delegate:nil

Cancelbuttontitle:cancelbuttontitle

Otherbuttontitles:nil, nil];

[Wrongalert show];

}

@end

Answer:

Uialertview * Alert =

[[Uialertview alloc] initwithtitle:@ "Tips"

message:@ "Please enter your password"

Delegate:self

cancelbuttontitle:@ "OK"

Otherbuttontitles:nil, nil];

The

Start writing code, set warning box to style with one ciphertext input box

Alert.alertviewstyle = Uialertviewstylesecuretextinput;

End_code

[Alert show];

No.2

Start writing code, set the input box keyboard as the numeric keypad.

Uitextfield * TextField = [alert textfieldatindex:0];

Textfield.keyboardtype = Uikeyboardtypenumberpad;

End_code

}

-(void) Alertview: (Uialertview *) Alertview Clickedbuttonatindex: (Nsinteger) buttonindex{

NSString * title = @ "Hint";

NSString * message;

NSString * Cancelbuttontitle = @ "OK";

No.3

Start writing code to determine if the contents of the Ciphertext input box are @ "123456" and pop up a warning box to prompt @ "Password input error" or "Buy success"

Uitextfield *textfield = [Alertview textfieldatindex:0];

if ([Textfield.text isequaltostring: @ "123456"]) {

message = @ "Purchase succeeded";

}else{

message = @ "Password input error";

}

End_code

Set the warning box to the style with a ciphertext input box, and set the input box keyboard as the numeric keypad, judge the contents of the ciphertext input box, and pop up the corresponding prompt.