我无法弄清楚为什么应用程序崩溃,同时使用 class.insert 将数据插入数据库SQLitePersistence
。
从 webservice 下载产品 xml 数据后,我试图将所有产品详细信息插入到各种表中,例如,
Product
Product_image
Product_option
Product_categories
Product_custom_option
目前,我们有 800 个产品在 webservice 上可用,未来可能会增加 2000 个左右的产品。
我的问题是:插入 400 到 450 个产品后,应用程序经常崩溃。然后我使用@autorelesepool
每个循环将数据插入数据库。它会增加 500 到 550 个产品,然后应用程序崩溃,接下来我该怎么做才能避免应用程序崩溃?
我的产品表文件的SQLitePersistence
数据库类:.h
#import <Foundation/Foundation.h>
#import "SQLitePersistentObject.h"
@interface iMobDB : SQLitePersistentObject
{
NSString *sku;
NSString *name;
.....
.....
}
@property(nonatomic,retain) NSString *sku;
@property(nonatomic,retain) NSString *name;
.....
.....
@end
.m
文件
@implementation iMobDB
@synthesize sku;
@synthesize name;
.....
.....
-(void) dealloc
{
for (NSString *one in [[self class] propertiesWithEncodedTypes])
{
[self removeObserver:self forKeyPath:one];
}
iMobReleaseNil(sku);
iMobReleaseNil(name);
.....
.....
}
Appdelegate
我在课堂上在这里插入数据
/*===================================== Save Product Information ===============================================*/
iMobDB *imobdb = [[iMobDB alloc]init];
imobdb.productId = [productid intValue];
imobdb.sku = skukey;
imobdb.name = namekey;
imobdb.optionalOption = [NSString stringWithFormat:@"%d",options];
imobdb.requriedOption = [NSString stringWithFormat:@"%d",requried];
imobdb.productType = producttypekey;
imobdb.price = pricekey;
imobdb.specialprice = specialpricekey;
imobdb.stock = [stock intValue];
imobdb.manufacture = manukey;
[imobdb save];
imobdb=nil;
/*==============================================================================================================*/
/*==================================== Save Product Images =====================================================*/
__unsafe_unretained NSDictionary *imagearray=[[dict objectForKey:@"images"] objectForKey:@"url"];
@autoreleasepool
{
for (NSDictionary *dict in imagearray)
{
if ([dict isKindOfClass:[NSArray class]])
{
NSString *imageurl=[dict objectForKey:@"text"];
ImageDB *imagedb = [[ImageDB alloc] init];
imagedb.productId = [productid intValue];
imagedb.imageurl = imageurl;
[imagedb save];
imagedb=nil;
}
else if([dict isKindOfClass:[NSDictionary class]])
{
NSString *imageurl=[dict objectForKey:@"text"];
ImageDB *imagedb = [[ImageDB alloc] init];
imagedb.productId = [productid intValue];
imagedb.imageurl = imageurl;
[imagedb save];
imagedb=nil;
}
}
}
/*===============================================================================================================*/
/*==================================== Save Category ============================================================*/
@autoreleasepool
{
__unsafe_unretained NSDictionary *categorydict = [dict objectForKey:@"categories"];
for (NSDictionary *dictt in catedict)
{
__unsafe_unretained NSString *categoryid=[[dictt objectForKey:@"categoryId"]objectForKey:@"text"];
__unsafe_unretained NSString *categoryname=[[dictt objectForKey:@"categoryName"]objectForKey:@"text"];
Categories *catdb = [[Categories alloc] init];
catdb.categoryId = [categoryid intValue];
catdb.categoryname = categoryname;
catdb.productId = [productid intValue];
[catdb save];
catdb=nil;
}
}
请注意:我在以下课程中禁用了 ARC
错误日志截图
错误日志
2 月 1 日 11:53:59 Innoppl-iPod backboardd[52]:iMob[2811] 有超过允许时间的活动断言:{(标识符:暂停进程:iMob[2811] allowedBackgroundDuration:10.000000 原因:暂停所有者 pid:52 preventSuspend preventThrottleDownCPU preventThrottleDownUI )} 2 月 1 日 11:53:59 Innoppl-iPod backboardd[52]:强制 iMob[2811] 的崩溃报告... 2 月 1 日 11:53:59 Innoppl-iPod backboardd[52]:完成崩溃报告。2 月 1 日 11:53:59 Innoppl-iPod ReportCrash [2819]:libMobileGestalt copySystemVersionDictionaryValue:无法从系统版本字典中查找 ReleaseType 2 月 1 日 11:53:59 Innoppl-iPod com.apple.launchd 1 (UIKitApplication:com.innoppl.Saletab[0xe1bf][2811]) : (UIKitApplication:com.innoppl.Saletab[0xe1bf]) 退出:杀死:2 月 1 日 11:53:59 Innoppl-iPod backboardd[52]:应用程序' UIKitApplication:com.innoppl.Saletab[0xe1bf]' 异常退出,信号 9:被杀死:9 Feb 1 11:53:59 Innoppl-iPod ReportCrash[2819] :将 crashreport 保存到 /var/mobile/Library/Logs/CrashReporter/iMob_2013 -02-01-115359_Innoppl-iPod.plist 使用 uid:0 gid:0,synthetic_euid:501 egid:0