iOS boot page animations (packaged)

//directly on the code, on the outside as long as the call, the image array can be passed.//Created by Liu Zhiwu on 2016/12/3.//Copyright 2016 Zhiwuliu. All rights reserved.//#import"LaunchView.h"#defineL_base_tag 10000#defineL_rotate_rate 1#defineL_SCREEN_WIDHT [UIScreen mainscreen].bounds.size.width//Screen Width#definel_screen_height [UIScreen mainscreen].bounds.size.height//Screen Height@implementation Launchview-(Instancetype) initWithFrame: (cgrect) frame{ Self=[Super Initwithframe:frame]; if(self) {}returnSelf ;}//overriding the setter method of a picture array-(void) Setimagesarray: (Nsarray *) imagesarray{_imagesarray=Imagesarray; [Self creatsubviews];}-(void) creatsubviews{Nsarray*imagearr =[Nsarray Arraywitharray:_imagesarray]; Uiscrollview*mainscrollview = [[Uiscrollview alloc]initwithframe:cgrectmake (0,0, L_SCREEN_WIDHT, L_screen_height)]; Mainscrollview.pagingenabled=YES; Mainscrollview.bounces=NO; Mainscrollview.contentsize= Cgsizemake (l_screen_widht*Imagearr.count, l_screen_height); Mainscrollview.showshorizontalscrollindicator=NO; Mainscrollview.Delegate=Self ;        [Self addsubview:mainscrollview]; //Add a cloud pictureUiimageview *imageview = [[Uiimageview alloc]initwithframe:cgrectmake (0, the, L_SCREEN_WIDHT, the*l_screen_widht/1242.0)]; Imageview.image= [UIImage imagenamed:@"Yun.png"];            [Self addsubview:imageview];  for(intI=0; i<imagearr.count; i++) {UIView*rotateview = [[UIView alloc]initwithframe:cgrectmake (L_screen_widht*i,0, L_SCREEN_WIDHT, l_screen_height*2)]; [Rotateview Settag:l_base_tag+i];        [Mainscrollview Addsubview:rotateview]; if(i!=0) {Rotateview.alpha=0; } Uiimageview*imageview = [[Uiimageview alloc]initwithframe:cgrectmake (0,0, L_SCREEN_WIDHT, L_screen_height)]; Imageview.image=[UIImage Imagenamed:imagearr[i]];                [Rotateview Addsubview:imageview]; //last page Add button        if(i = = imagearr.count-1) {Uicontrol*control = [[Uicontrol alloc]initwithframe:cgrectmake (0, l_screen_height- the, L_SCREEN_WIDHT, -)]; Control.backgroundcolor=[Uicolor Blackcolor];            [Control addtarget:self Action: @selector (Clicktoremove) forcontrolevents:uicontroleventtouchupinside];        [Rotateview Addsubview:control]; }} UIView*firstview =[Mainscrollview Viewwithtag:l_base_tag];        [Mainscrollview Bringsubviewtofront:firstview]; }-(void) Scrollviewdidscroll: (Uiscrollview *) scrollview{UIView* View1 =[ScrollView Viewwithtag:l_base_tag]; UIView* View2 = [ScrollView viewwithtag:l_base_tag+1]; UIView* VIEW3 = [ScrollView viewwithtag:l_base_tag+2]; UIView* View4 = [ScrollView viewwithtag:l_base_tag+3]; Uiimageview* ImageView1 = (Uiimageview *) [ScrollView viewwithtag:l_base_tag*2]; Uiimageview* ImageView2 = (Uiimageview *) [ScrollView viewwithtag:l_base_tag*2+1]; Uiimageview* IMAGEVIEW3 = (Uiimageview *) [ScrollView viewwithtag:l_base_tag*2+2]; Uiimageview* ImageView4 = (Uiimageview *) [ScrollView viewwithtag:l_base_tag*2+3]; CGFloat Xoffset=Scrollview.contentoffset.x; //rotate based on offsetCGFloat Rotateangle =-1*1.0/L_SCREEN_WIDHT * Xoffset * m_pi_2 *l_rotate_rate; View1.layer.transform= Catransform3dmakerotation (Rotateangle,0,0,1); View2.layer.transform= Catransform3dmakerotation (m_pi_2*1+rotateangle,0,0,1); View3.layer.transform= Catransform3dmakerotation (m_pi_2*2+rotateangle,0,0,1); View4.layer.transform= Catransform3dmakerotation (m_pi_2*3+rotateangle,0,0,1); //displacement based on offset (guaranteed center point is always in the middle of the screen below)View1.center = Cgpointmake (0.5* l_screen_widht+Xoffset, l_screen_height); View2.center= Cgpointmake (0.5* l_screen_widht+Xoffset, l_screen_height); View3.center= Cgpointmake (0.5* l_screen_widht+Xoffset, l_screen_height); View4.center= Cgpointmake (0.5* l_screen_widht+Xoffset, l_screen_height); //which view is currently on top    if(xoffset<l_screen_widht*0.5) {[ScrollView bringsubviewtofront:view1]; }Else if(xoffset>=l_screen_widht*0.5&& Xoffset < l_screen_widht*1.5) {[ScrollView bringsubviewtofront:view2]; }Else if(Xoffset >=l_screen_widht*1.5&& Xoffset < l_screen_widht*2.5) {[ScrollView bringsubviewtofront:view3]; }Else if(Xoffset >=l_screen_widht*2.5) {[ScrollView bringsubviewtofront:view4]; }        //adjust its transparencyCGFloat Xoffset_more = xoffset*1.5>l_screen_widht? l_screen_widht:xoffset*1.5; if(Xoffset <l_screen_widht) {View1.alpha= (L_screen_widht-xoffset_more)/l_screen_widht; Imageview1.alpha= (L_screen_widht-xoffset)/l_screen_widht;; }    if(Xoffset <=l_screen_widht) {View2.alpha= Xoffset_more/l_screen_widht; Imageview2.alpha= Xoffset/l_screen_widht; }    if(Xoffset >l_screen_widht && xoffset <= l_screen_widht*2) {View2.alpha= (l_screen_widht*2-Xoffset)/l_screen_widht; View3.alpha= (XOFFSET-L_SCREEN_WIDHT)/l_screen_widht; Imageview2.alpha= (l_screen_widht*2-Xoffset)/l_screen_widht; Imageview3.alpha= (XOFFSET-L_SCREEN_WIDHT)/l_screen_widht; }    if(Xoffset >l_screen_widht*2) {View3.alpha= (l_screen_widht*3-Xoffset)/l_screen_widht; View4.alpha= (xoffset-l_screen_widht*2)/l_screen_widht; Imageview3.alpha= (l_screen_widht*3-Xoffset)/l_screen_widht; Imageview4.alpha= (xoffset-l_screen_widht*2)/l_screen_widht; }        //Adjust background color    if(Xoffset <l_screen_widht && xoffset>0) {Self.backgroundcolor= [Uicolor colorwithred: ( $-40.0/l_screen_widht*xoffset)/255.0Green: (255-25.0/l_screen_widht*xoffset)/255.0Blue: (255-100.0/l_screen_widht*xoffset)/255.0Alpha1]; }Else if(Xoffset>=l_screen_widht &&xoffset<l_screen_widht*2) {Self.backgroundcolor= [Uicolor colorwithred: ( -+30.0/l_screen_widht* (XOFFSET-L_SCREEN_WIDHT))/255.0Green: ( the-40.0/l_screen_widht* (XOFFSET-L_SCREEN_WIDHT))/255.0Blue: (155-5.0/ the* (XOFFSET-L_SCREEN_WIDHT))/255.0Alpha1]; }Else if(xoffset>=l_screen_widht*2&&xoffset<l_screen_widht*3) {Self.backgroundcolor= [Uicolor colorwithred: ( the-50.0/l_screen_widht* (xoffset-l_screen_widht*2))/255.0Green: ( the-40.0/l_screen_widht* (xoffset-l_screen_widht*2))/255.0Blue: ( Max+50.0/l_screen_widht* (xoffset-l_screen_widht*2))/255.0Alpha1]; }Else if(xoffset>=l_screen_widht*3&&xoffset<l_screen_widht*4) {Self.backgroundcolor= [Uicolor colorwithred: ( the-10.0/l_screen_widht* (xoffset-l_screen_widht*3))/255.0Green: ( Max-25.0/l_screen_widht* (xoffset-l_screen_widht*3))/255.0Blue: ( $-90.0/l_screen_widht* (xoffset-l_screen_widht*3))/255.0Alpha1]; }    }#pragmaButton's click Method-(void) clicktoremove{NSLog (@"Enter the main interface");} @end

iOS boot page animations (packaged)