点击按钮复制指定字符串

-(void)fuzhiBtnClick{

    NSLog(@"复制");

    UIPasteboard *pab = [UIPasteboard generalPasteboard];

    pab.string=@"您需要复制的内容";

    if(pab == nil) {

        NSLog(@"复制失败");

} else {

       NSLog(@"复制成功");

    }

}