Use UIView to make neon effects

Effect

The code is as follows (only the implementation section)

@interface appdelegate () @end @implementation appdelegate-(void) dealloc{[_window release]; [Super Dealloc];}    -(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (Nsdictionary *) launchOptions {    Self.window = [[UIWindow alloc] initwithframe:[[uiscreen mainscreen] bounds]];    Override point for customization after application launch.    Self.window.backgroundColor = [Uicolor Whitecolor];    [Self.window makekeyandvisible];        [_window release];    Define view, color module UIView *view1 = [[UIView alloc] Initwithframe:cgrectmake (20, 20, 340, 340)];    View1.backgroundcolor = [Uicolor Greencolor];    [Self.window Addsubview:view1];    [View1 release];        View1.tag = 1;    UIView *view2 = [[UIView alloc] Initwithframe:cgrectmake (40, 40, 300, 300)];    View2.backgroundcolor = [Uicolor Purplecolor];    [Self.window Addsubview:view2];    [View2 release];        View2.tag = 2; UIView *VIEW3 = [[UIView alloc] Initwithframe:cgrectmake (60, 60, 260, 260)];    View3.backgroundcolor = [Uicolor Magentacolor];    [Self.window ADDSUBVIEW:VIEW3];    [VIEW3 release];        View3.tag = 3;    UIView *view4 = [[UIView alloc] Initwithframe:cgrectmake (80, 80, 220, 220)];    View4.backgroundcolor = [Uicolor Redcolor];    [Self.window ADDSUBVIEW:VIEW4];    [View4 release];        View4.tag = 4;    UIView *view5 = [[UIView alloc] initwithframe:cgrectmake (100, 100, 180, 180)];    View5.backgroundcolor = [Uicolor Orangecolor];    [Self.window ADDSUBVIEW:VIEW5];    [VIEW5 release];        View5.tag = 5;    UIView *view6 = [[UIView alloc] Initwithframe:cgrectmake (120, 120, 140, 140)];    View6.backgroundcolor = [Uicolor Yellowcolor];    [Self.window ADDSUBVIEW:VIEW6];    [VIEW6 release];        View6.tag = 6;    UIView *view7 = [[UIView alloc] Initwithframe:cgrectmake (140, 140, 100, 100)];    View7.backgroundcolor = [Uicolor Cyancolor];    [Self.window ADDSUBVIEW:VIEW7];    [View7 release];    View7.tag = 7; Define a timer to implement the color block change nstimer *timer = [NStimer scheduledtimerwithtimeinterval:0.3 target:self selector: @selector (ChangeColor) Userinfo:nil Repeats:yes]; return YES;}    -(void) changecolor{//define a color to receive 7 colors Uicolor *color = [Self.window viewwithtag:7].backgroundcolor; Loop swap color for (int i = 6; i > 0; i--) {[Self.window viewwithtag:i + 1].backgroundcolor = [Self.window vieww    Ithtag:i].backgroundcolor; }//Swaps the innermost and outermost values [self.window viewwithtag:1].backgroundcolor = color;} @end

Copyright NOTICE: This article is the original article of Bo Master, please specify the original address

Use UIView to make neon effects