Uialertcontroller class--alert Bullet Box 3 (Text dialog box)

First, the effect

Second, the realization

-(void) Touchesbegan: (Nsset<uitouch *> *) touches withevent: (Uievent *) event

{

[Self alertTest3];

}

/**

* Text dialog box

*/

-(void) alertTest3

{

1. Create Uialertcontroller

Uialertcontroller *alertcontroller = [Uialertcontroller

alertcontrollerwithtitle:@ "Text dialog box"

message:@ "Login and Password dialog box example"

Preferredstyle:uialertcontrollerstylealert];

2. Add Text dialog box

/**

Benefits:

1. You can add any of the Uitextfield objects to the dialog box

2. All Uitextfield features can be used

*/

[Alertcontroller addtextfieldwithconfigurationhandler:^ (Uitextfield * _nonnull TextField) {

Textfield.placeholder = @ "Login";

}];

[Alertcontroller addtextfieldwithconfigurationhandler:^ (Uitextfield * _nonnull TextField) {

Textfield.placeholder = @ "password";

Textfield.securetextentry = yes;//Ciphertext

}];

3. Create a Uialertaction instance

Uialertaction *okaction = [uialertaction actionwithtitle:@ "Good" Style:uialertactionstyledefault handler:^ ( Uialertaction * _nonnull action) {//click the "OK" button, let the program read the value in the text box, and then do something

Uitextfield *login = AlertController.textFields.firstObject;

Uitextfield *password = AlertController.textFields.lastObject;

}];

Uialertaction *cancelaction = [uialertaction actionwithtitle:@ "Cancel" Style:uialertactionstylecancel handler:^ ( Uialertaction * _nonnull action) {

}];

4.UIAlertAction instance added to Alertcontroller

[Alertcontroller addaction:okaction];

[Alertcontroller addaction:cancelaction];

5. Display the View Controller

[Self Presentviewcontroller:alertcontroller animated:yes completion:^{

}];

}

Uialertcontroller class--alert Bullet Box 3 (Text dialog box)