Feature
- API is simple just like the UIAlertView.
 - The callback function is simple to write.
 - The animation is cool or in another saying----different from the triditional way.
 
How to use
eg:DXAlertView *alert = [[DXAlertView alloc] initWithTitle:@"Congratulations" contentText:@"You have bought something" leftButtonTitle:@"Ok" rightButtonTitle:@"Fine"];
[alert show];
alert.leftBlock = ^() {
    NSLog(@"left button clicked");
};
alert.rightBlock = ^() {
    NSLog(@"right button clicked");
};
alert.dismissBlock = ^() {
    NSLog(@"Do something interesting after dismiss block");
};
PicDemo:Download: https://github.com/xiekw2010/DXAlertView/archive/master.zip