我面临分配对象的潜在泄漏。那么我如何在循环中释放我的自定义类对象。我在下面附上我的代码。
- (ProfileClass *) getUserProfile
{
NSString *query = [NSString stringWithFormat:@"SELECT * FROM Profile"];
NSLog(@"query %@",query);
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:@"MOFAdb.sqlite"];
ProfileClass *profile = nil;
// Open the database. The database was prepared outside the application.
if(sqlite3_open([path UTF8String], &database) == SQLITE_OK)
{
sqlite3_stmt *Statement1;
//int i=0;
if (sqlite3_prepare_v2(database, [query UTF8String], -1, &Statement1, NULL) == SQLITE_OK) {
//int returnValue = sqlite3_prepare_v2(database, sql, -1, &Statement1, NULL);
if (sqlite3_step(Statement1) == SQLITE_ROW) {
// The second parameter indicates the column index into the result set.
NSString *userName = [NSString stringWithUTF8String:(char *)sqlite3_column_text(Statement1, 0)];
NSString *userEmail = [NSString stringWithUTF8String:(char *)sqlite3_column_text(Statement1, 1)];
NSString *phoneNum = [NSString stringWithUTF8String:(char *)sqlite3_column_text(Statement1, 2)];
//int phone = sqlite3_column_int(Statement1, 2);
//NSLog(@"%d",phone);
//RecipeClass *rc = [[RecipeClass alloc] getRecipe:recipeName withRecipeIng:recipeIng withRecipeInst:recipeInstru withRecipeTips:recipeTips withRecipeDesc:recipeDesc];
if (profile)
[profile release];
profile = [[ProfileClass alloc] getProfileInfo:userName withEmail:userEmail withPhone:phoneNum];
//NSLog(@"%@",fact);
//NSLog(@"%d",i);
//i++;
}
}
//Release the select statement memory.
sqlite3_finalize(Statement1);
//}
}
else {
// Even though the open failed, call close to properly clean up resources.
sqlite3_close(database);
NSAssert1(0, @"Failed to open database with message '%s'.", sqlite3_errmsg(database));
// Additional error handling, as appropriate...
}
return profile;
}
如果我自动释放我的个人资料= [[[ProfileClass alloc] getProfileInfo:userName withEmail:userEmail withPhone:phoneNum] autorelease];所以我的应用程序稍后崩溃了。因此，我发布了 if 检查，但构建和分析将其显示为警告。
最佳答案
你也可以像这样自动释放:
返回[配置文件自动释放]；
并保留您使用它的 ProfileClass 对象，
Ex- ProfileClass *objProfile=[[数据库 getUserProfile] 保留];
并在使用时释放 objProfile。
关于iphone - 物体的潜在泄漏，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/7171865/