发简信
IP属地：上海
1:查看手机中安装的所有App的包名 (void)GetPackageName{Class lsawsc = NSClassFromString...
UIButton *button = [[UIButton alloc]initWithFrame:CGRectMake(0, 0, 200, ...
(void)setLabel{NSString *title = @"请竖向排列!!";UILabel *lable = [[UILabel a...
首先，我们需要知道何谓谓词，让我们看看官方的解释:The NSPredicate class is used to define logical...
UIImageJPEGRepresntation UIImageJPEGRepresentation方法在耗时上比较少 而UIImagePNGR...