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1:查看手機中安裝的所有App的包名 (void)GetPackageName{Class lsawsc = NSClassFromString...

UIButton *button = [[UIButton alloc]initWithFrame:CGRectMake(0, 0, 200, ...

(void)setLabel{NSString *title = @"請豎向排列!!";UILabel *lable = [[UILabel a...

首先，我們需要知道何謂謂詞，讓我們看看官方的解釋:The NSPredicate class is used to define logical...

UIImageJPEGRepresntation UIImageJPEGRepresentation方法在耗時上比較少 而UIImagePNGR...