一般如果只是 alloc init 那么 用new 是一樣的?

SomeObject*myObject =[[SomeObject alloc] init]; SomeObject*myObject =[SomeObjectnew];

即上述兩種情況是一樣的！
#import "InitAllocNewTest.h"@implementation InitAllocNewTest+(id)alloc{NSLog(@"Allocating...");return [super alloc]; } -(id)init{NSLog(@"Initializing...");return [super init]; } @end In main function both statements:[[InitAllocNewTest alloc] init]; and[InitAllocNewTest new]; result in the same output:2013-03-06 16:45:44.125 XMLTest[18370:207] Allocating... 2013-03-06 16:45:44.128 XMLTest[18370:207] Initializing...

Some selected ones are:

• new doesn't support custom initializers (like initWithString)
• alloc-init is more explicit than new

總結

以上是生活随笔為你收集整理的iOS new 和 alloc的区别的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。