UIButton Basic Introduction

UIButton is a button, and he inherits UIView. 1: Initialize to size: Convenience builder:

      // Initialize         UIButton *button = [UIButton buttonwithtype:uibuttontypesystem];       // Set the frame      of the Button Button.frame = CGRectMake (+);       // Set Background      Button.backgroundcolor = [Uicolor redcolor];       // add him to the UIWindow.      [Self.window Addsubview:button];     

2. Add a Click event

      // Set Button caption      [Button Settitle:@ " you order me, "  forstate:uicontrolstatenormal];       // Click events (Add method) //  Implement the button response event in the method selector -(void) buttonaction{NSLog (             @ " you hit me ");}

3. Add a background Image:

[Button setbackgroundimage:[uiimage imagenamed:@ "11.png"] forstate: 　 UIControlStateNormal]; [Button addtarget:self action: @selector (buttonaction:) forcontrolevents:uicontroleventtouchupinside];

Different click picture changes (similar to registration options)

@property (nonatomic,assign) BOOL flag;

  Add a Click event method, pass in a parameter, the parameter is the responder of this event, the type of the parameter, is the type of the responder;-  (void) Buttonaction: (uibutton *) sender{    if  (Self.flag == yes)  {        [sender setbackgroundimage:[ uiimage imagenamed:@ "22.png"] forstate:uicontrolstatenormal];        self.flag  = no;   }else{        [sender setbackgroundimage:[uiimage imagenamed:@　　"11.png"] forstate:uicontrolstatenormal];        Self.flag = yes;}} 4. Appearance control ①: Foreground picture   Note:1  Overlay title  2  does not extrude with buttonframe  3  foreground picture must be a skeleton (image with only a line) (1): Set foreground color picture　　: [button1 setimage:[uiimage imagenamed:@ "55.png"] forstate:uicontrolstatenormal];　　(2): Get foreground picture:uiimage *image1 = [button1 imageforstate:uicontrolstatenormal]; ②: Background color picture (1): Set background color picture: [button1 setbackgroundimage:[uiimage imagenamed:@ "11.png"] forstate:　　UIControlStateNormal]; (2): Get background color mapSlice:uiimage *image2 = [button1 backgroundimageforstate:uicontrolstatenormal];　　③: Title (1): set title: [button1 settitle:@ "Dot Me"  forState:UIControlStateNormal];　　(2): Get title: nsstring *title = [button1 titleforstate:uicontrolstatenormal];　　(3): Title Color:[button1 settitlecolor:[uicolor redcolor] forstate:uicontrolstatenormal];　　④: Shadow:[button1 settitleshadowcolor:[uicolor orangecolor] forstate:uicontrolstatenormal];　　⑤: Get Color:uicolor *color1 = [button1 titlecolorforstate:uicontrolstatenormal]; 5.delegate Three Step 1, follow the agreement, locate the current class (angle brackets +,uitextfielddelegate in the AppDelegate.h file) 2, set the proxy   operations who, who .delegate = 　　　　Self　　 3, implement the Proxy method code example:

// Follow the agreement @interface Appdelegate:uiresponder <UIApplicationDelegate,UITextFieldDelegate>

// sets the proxy object. delegate = self;

Implementing proxies (Uitextfield as an example)

-(BOOL) Textfieldshouldreturn: (Uitextfield *) textfield{    [TextField Resignfirstresponder]; // Release First responder    return YES;     // To Implement proxy methods Note    : //      1 have return value     //     2 release first responder }

This is the basic content of UIButton!

UIButton Basic Introduction