[IPhone application development] iPhone application development 3: uilable and uitextfield

I. uilabel

(1) initialize uilabel

Uilabel * scorelabel = [[uilabel alloc] initwithframe: cgrectmake (self. bounds. Size. width/2),0.0,150.0,43.0)];

Scorelabel. textalignment = uitextalignmentcenter;

Scorelabel. Text =@"I'm Andy -- Qingfeng";

Scorelabel. textcolor = [uicolor whitecolor];

Scorelabel. backgroundcolor = [uicolor blackcolor];

Scorelabel. font = [uifont fontwithname:@"Arial rounded Mt bold"Size :(36.0)];

[Self addsubview: scorelabel];
 

 

(2) detailed parameter explanation:

//  Set display text  
 
Scorelabel. Text = @"  I'm Andy -- Qingfeng  " ;



 //  Set the font: bold. The system fontofsize is normal and the system font configuration is called.  
 
Scorelabel. font = [uifont boldsystemfontofsize: 20 ];



 // Set the text color. You can select multiple colors.  
 
Scorelabel. textcolor = [uicolor orangecolor];

Scorelabel. textcolor = [uicolor purplecolor];



 //  Set the text alignment position, Center, Center, and right  
 
Scorelabel. textalignment = uitextalignmentright;

Scorelabel. textalignment = uitextalignmentcenter;

 //  Set the font size to fit the label width.  
 
Scorelabel. adjustsfontsizetofitwidth = yes;



 //  Set the number of lines of the label. This can be set according to the uitextview in the previous section.  
 
Scorelabel. numberoflines = 2 ;



 //  Set whether the text is highlighted or not.  
 
Scorelabel. Highlighted = yes;

Scorelabel. highlightedtextcolor = [uicolor orangecolor];



 //  Set the offset between the shadow color and the shadow.  
 
Scorelabel. shadowcolor = [uicolor redcolor];

Scorelabel. shadowoffset = cgsizemake ( 1.0 , 1.0 );



 //  Set whether to interact with users  
 
Scorelabel. userinteractionenabled = yes;



 // Set whether the text in the label is variable. The default value is yes.  
 
Scorelabel. Enabled = no;



 //  Set the display format when the text is too long  
 
Scorelabel. linebreakmode = uilinebreakmodemiddletruncation; //  Intercept 

The following formats can be displayed in the definition:

  //  Typedef Enum {

  // Uilinebreakmodewordwrap = 0,

  //  Uilinebreakmodecharacterwrap,

  //  Uilinebreakmodeclip,  //  Cut off extra parts

  //  Uilinebreakmodeheadtruncation,  //  Cut the header

  //  Uilinebreakmodetailtruncation,  // Cut off the tail

  //  Uilinebreakmodemiddletruncation,  //  Intercept

  //  } Uilinebreakmode; 

 

// If the adjustsfontsizetofitwidth attribute is set to yes, this attribute controls the behavior of the text baseline.

 
Scorelabel. baselineadjustment = uibaselineadjustmentnone;
 

The following formats can be displayed in the definition:

// Typedef Enum {// uibaselineadjustmentalignbaselines, // uibaselineadjustmentaligncenters, // uibaselineadjustmentnone, //} uibaselineadjustment;
 

 

// Set the background color to transparent

 
Scorelabel. backgroudcolor = [uicolor clearcolor];
 

You can also use custom colors:

 
Uicolor * color = [uicolor colorwithred: 1.0f Green: 50366f Blue: 0.0f ALPHA: 1.0f]; scorelabel. textcolor = [uicolor color]; // The RGB value in uicolor is of the cgfloat type ranging from 0 ~ The value ranges from 0 to 1 ~ The color value range of 255.
 

 

Ii. uitextfield

(1) initialize uitextfield

 
Uitextfield * text = [[uitextfield alloc] initwithframe: cgrectmake (10, 50,300, 30)]; text. borderstyle = uitextborderstyleroundedrect; text. autocorrectiontype = uitextautocorrectiontypeyes; text. placeholder = @ "Hello, I'm Andy-Qingfeng"; text. returnkeytype = uireturnkeydone; text. clearbuttonmode = uitextfieldviewmodewhileediting; [text setbackgroundcolor: [uicolor whitecolor]; text. delegate = self; [self. view addsubview: text];
 

(2) detailed parameter explanation

Borderstyle: border style of the text box

Autocorrectiontype: You can set whether to enable the automatic reminder correction function.

Placeholder: Set the default text display.

Returnkeytype: Specifies the keyboard completion button.

Backgroundcolor: Set the background color.

Delegate: Set Delegation

(3) delegate Method

 

-(Void) Textfielddidbeginediting :( uitextfield *) textfield;

//The method that will be called when you click textfield.



-(Void) Textfielddidendediting :( uitextfield *) textfield;

//Method called when textfield editing ends

//Press the call method of the done button to make the keyboard disappear.

-(Bool) textfieldshouldreturn :( uitextfield *) textfield {

[Textfield resignfirstresponder];

ReturnYes;

}
 

Today we will introduce uilabel and uitextfield. Next we will talk about uiimageview and uiwebview. Thank you for your support.