NSString *ccc = @"1、增加白菜党等特色标签筛选\n2、增加频道热度排行\n3、增加夜间模式\n4、Material design风格优化\n5、滑动返回优化\n6、其他bug修复";
NSString *message = [[NSString alloc]initWithFormat:@"发现新版本1.1,是否更新?\n本次更新内容:\n%@",ccc];
UIAlertView*alert = [[UIAlertView alloc] initWithTitle:@"立即更新"message:message
delegate:self
cancelButtonTitle:@"暂不更新"
otherButtonTitles:@"立即更新",nil];
//如果你的系统大于等于7.0
if (floor(NSFoundationVersionNumber) > NSFoundationVersionNumber_iOS_6_1)
{
CGSize size = [message sizeWithFont:[UIFont systemFontOfSize:15]constrainedToSize:CGSizeMake(240,400) lineBreakMode:NSLineBreakByTruncatingTail];
UILabel *textLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, -20,240, size.height)];
textLabel.font = [UIFont systemFontOfSize:15];
textLabel.textColor = [UIColor blackColor];
textLabel.backgroundColor = [UIColor clearColor];
textLabel.lineBreakMode =NSLineBreakByWordWrapping;
textLabel.numberOfLines =0;
textLabel.textAlignment =NSTextAlignmentLeft;
textLabel.text = message;
[alert setValue:textLabel forKey:@"accessoryView"];
alert.message =@"";
}else{
NSInteger count = 0;
for( UIView * view in alert.subviews )
{
if( [view isKindOfClass:[UILabel class]] )
{
count ++;
if ( count == 2 ) { //仅对message左对齐
UILabel* label = (UILabel*) view;
label.textAlignment =NSTextAlignmentLeft;
}
}
}
}
[alert show];