IPhone: Custom uialertview

Because there is a need in the project: You need to select a place to save in the "save" dialog box. Select uialertview for implementation, but add the uiswitch control to uialertview. Therefore, you need to customize a class that inherits uialertview to customize uialertview.

The implementation result is as follows: (the image is not added yet)

When I click "OK", I need to know the status of the two switches before proceeding with the relevant functions.

The savealertview class is customized.

In. H, you need to define a @ protocol as the exit for outgoing switch status.

Declare the corresponding delegate. View Source Code

 # Import <Uikit/uikit. h> @ Protocol Savealertviewdelegate <nsobject> @ Optional -( Void ) Alertview :( uialertview *) Alertview clickedbuttonatindex :( nsinteger) buttonindex save2file :( bool) save2file save2album :( bool) save2album;  @ End  @ Interface  Savealertview: uialertview @ property (nonatomic, assign)  ID <Savealertviewdelegate> Savealertdelegate; @ property (readwrite, retain) uiimage * Backgroundimage; @ property (readwrite, retain) uiimage * Contentimage; @ property (strong, nonatomic) iboutlet uiswitch * Swititch; @ property (strong, nonatomic) iboutlet uiswitch *Switch2; -( ID ) Initwithimage :( uiimage *) image contentimage :( uiimage * ) Content;  @ End 

In. m, the original control of the system is hidden (implemented in layoutsubviews). add your own control and clickCode.

Hide system controls in layoutsubviews

For(Uiview * VIn[Self subviews]) {If([VClass] = [UiimageviewClass]) {[V sethidden: Yes];}If([V iskindofclass: [uibuttonClass] |[V iskindofclass: nsclassfromstring (@"Uithreepartbutton")]) {[V sethidden: Yes] ;}}
 

Complete. m code

 # Import   " Savealertview. h  "  @ Implementation  Savealertview  @ Synthesize  Savealertdelegate;  @ Synthesize  Backgroundimage;  @ Synthesize  Contentimage;  @ Synthesize  Switch1;  @ Synthesize  Switch2; -( ID ) Initwithframe :( cgrect) frame {self = [Super initwithframe: frame];  If  (Self ){  //  Initialization code  }  Return  Self ;} -( ID ) Initwithimage :( uiimage *) image contentimage :( uiimage * ) Content {  If (Self = [Super init]) {self. backgroundimage = Image; self. contentimage = Content ;}  Return  Self ;} -( Void  ) Drawrect :( cgrect) rect {cgsize imagesize = Self. backgroundimage. size; [self. backgroundimage drawinrect: cgrectmake (  0 , 0  , Imagesize. Width, imagesize. Height)];} -( Void  ) Layoutsubviews { //  Shielding system imageview and uibutton      For (Uiview * V In  [Self subviews]) {  If ([V Class ] = [Uiimageview Class  ]) {[V sethidden: Yes];}  If ([V iskindofclass: [uibutton Class ] | [V iskindofclass: nsclassfromstring (  @" Uithreepartbutton  "  )]) {[V sethidden: Yes] ;}}  If  (Contentimage) {uiimageview * Contentview = [[Uiimageview alloc] initwithimage: Self. contentimage]; contentview. Frame = Cgrectmake ( 0 , 0  , Backgroundimage. Size. Width, backgroundimage. Size. Height); [self addsubview: contentview];} uilabel * Label1 = [[uilabel alloc] initwithframe: cgrectmake ( 20 ,20 , 136 , 21  )]; Label1.text = @"  Save as an editable File  "  ; [Self addsubview: label1]; uilabel * Label2 = [[uilabel alloc] initwithframe: cgrectmake ( 20 , 65 , 85 , 21  )]; Label2.text =@"  Save to album  "  ; [Self addsubview: label2]; switch1 = [[Uiswitch alloc] initwithframe: cgrectmake ( 206 , 17 , 79 , 27  )]; [Switch1 Seton: Yes]; [self addsubview: switview]; switch2 = [[Uiswitch alloc] initwithframe: cgrectmake ( 206 , 62 , 79 ,27  )]; [Self addsubview: switch2]; uibutton * Button1 = [[uibutton alloc] initwithframe: cgrectmake ( 20 , 118 , 86 , 36  )]; Button1.tag = 1  ; [Button1 settitle:  @"  OK  "  Forstate: uicontrolstatenormal]; button1.backgroundcolor =[Uicolor bluecolor]; [button1 addtarget: Self action: @ selector (buttonclicked :) forcontrolevents: uicontroleventtouchupinside]; [self addsubview: button1]; uibutton * Button2 = [[uibutton alloc] initwithframe: cgrectmake ( 199 , 118 , 86 , 36  )]; Button2.tag = 2  ; [Button2 settitle:  @"  Cancel  " Forstate: uicontrolstatenormal]; button2.backgroundcolor = [Uicolor bluecolor]; [button2 addtarget: Self action: @ selector (buttonclicked :) forcontrolevents: uicontroleventtouchupinside]; [self addsubview: button2]; self. backgroundcolor = [Uicolor graycolor];} -( Void ) Buttonclicked :( ID  ) Sender {uibutton * BTN = (uibutton * ) Sender;  If  (Savealertdelegate ){  If ([Savealertdelegate respondstoselector: @ selector (alertview: clickedbuttonatindex :)]) {[savealertdelegate alertview: Self clickedbuttonatindex: BTN. tag save2file: [switch1 ISON] save2album: [switch2 ISON] ;}} [self dismisswithclickedbuttonindex:  0  Animated: Yes];} -( Void  ) Show {[Super Show];  //  Cgsize imagesize = self. backgroundimage. size;  //  Self. bounds = cgrectmake (0, 0, imagesize. Width, imagesize. Height ); Self. Frame = cgrectmake (350 , 300 , 320 , 191  );}  @ End 

Then call the API. Do not forget to set the delegate.

 
Savealertview * savealert = [[savealertview alloc] initwithframe: cgrectmake (340,221,305,191)]; Savealert. savealertdelegate=Self; [savealert show];
 

 

This is almost the case.