IPhone application development 3: UILable and UITextField

 

I. UILabel

(1) initialize UILabel

 

<Span style = "color: #000000;"> 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]; </span>

 

 

 

(2) detailed parameter explanation

 

// Set the 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, which can be self-adaptive Based on 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 color of the shadow and the offset position of the shadow.

 

ScoreLabel. shadowColor = [UIColor redColor];

 

ScoreLabel. shadowOffset = CGSizeMake (1.0, 1.0 );

 

 

// Set whether to interact with the user

 

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 the excess part

 

// UILineBreakModeHeadTruncation, // capture the header

 

// UILineBreakModeTailTruncation, // remove 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 www.2cto.com

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 textField is clicked

 

 

-(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];

 

Return YES;

 

}

 

Today we will introduce UILabel and UITextField. Next we will talk about UIImageView and UIWebView. Thank you for your support.

 

From Andy --- breeze