float begainAngle ＝ 0.0f;
CGAffineTransform afterAngle = CGAffineTransformMakeRotation(begainAngle * (M_PI / 180.0f));
[UIView animateWithDuration:0.01 delay:0 options:UIViewAnimationOptionCurveLinear animations:^{
iConImage.transform = afterAngle;
} completion:^(BOOL finished) {
begainAngle += 2;
[self startAnimation];
}];
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