-5
我想檢查舊數組是否有對象如果舊數組有對象它應該顯示按鈕,如果oldArray有零對象該按鈕應該隱藏代碼給出下面的感謝...我如何檢查數組是否有對象
-(void)viewWillAppear:(BOOL)animated
{
GET_DEFAULTS
NSMutableArray *array = [defaults objectForKey:kShouldResume];
NSData *dataRepresentingSavedArray = [defaults objectForKey:kShouldResume];
if (dataRepresentingSavedArray != nil)
{
NSArray *oldSavedArray = [NSKeyedUnarchiver unarchiveObjectWithData:dataRepresentingSavedArray];
if (oldSavedArray != nil)
{
array = [[NSMutableArray alloc] initWithArray:oldSavedArray];
if ([oldSavedArray containsObject])
{
btnResumeGame.hidden=NO;
}
else
{
btnResumeGame.hidden=YES;
}
}
else
{
array = [[NSMutableArray alloc] init];
}
}
}
使用您的NSMutableArray計數財產 –