Lan Yi Education September 27 record

will be VIew move to animate effect There is no intermediate displacement of this animation effect

You can add animations to the View Properties Center , Frame,alpha,transform , BackgroundColor

// continue to do the disappearing animation

[UIView animatewithduration:1 animations: ^{

iv. Alpha = 0;

} Completion: ^ (BOOL finished) {

// finish animation after execution can continue to add

[IV Removefromsuperview];

}];

-(void) Viewdidload {

[Super viewdidload];

//Do anyadditional setup after loading the view, typically from a nib.

[nstimer scheduledtimerwithtimeinterval:0.1 target: self Selector :@selector(addsnow) userInfo:nil repeats:YES];

}

-(void) addsnow{

int size = arc4random()%+ten;

uiimageview *iv = [[uiimageviewalloc]initwithframe:cgrectmake( Arc4random()% (-size),-size, size, size)];

iv. image = [UIImageimagenamed:@ "Snow"];

[Self. View Addsubview: IV];

int time = arc4random()%4+1;

// add move animation

[UIView animatewithduration: Time animations: ^{

// Move the end position

iv. Center = cgpointmake(Iv. Center. x, 568);

// Graphics change End shape

iv. Transform = cgaffinetransformrotate(Iv. Transform, (arc4random()%)/180.0*m_pi);

} Completion: ^ (BOOLfinished) {

// continue to make snowflakes disappear animation

[UIView animatewithduration:1 animations: ^{

iv. Alpha = 0;

} Completion: ^ (BOOL finished) {

[IV Removefromsuperview];

}];

}];

}

Lan Yi Education September 27 record