Instruments表示此方法存在内存泄漏，但我不知道在哪里

如何解决Instruments表示此方法存在内存泄漏，但我不知道在哪里

| 根据仪器，这些行存在内存泄漏

    cat.catName = (catName)?[NSString stringWithUTF8String:catName]:@\"\";
    NSData *dataForCachedImage = [[NSData alloc] initWithBytes:sqlite3_column_blob(statement,2) length: sqlite3_column_bytes(statement,2)];           
    cat.catThumb = [UIImage imageWithData:dataForCachedImage];
    [dataForCachedImage release];

在以下代码中。 我还静态分析了代码..在此文件中没有发现问题。

-(NSMutableArray *)getAllItems{
NSMutableArray *items = [[[NSMutableArray alloc] init] autorelease];

const char *sql = \"SELECT * FROM category ORDER by sort\";

sqlite3_stmt *statement;

int sqlresult = sqlite3_prepare(database,sql,-1,&statement,nil);

if (sqlresult == SQLITE_OK) {
    while (sqlite3_step(statement) == SQLITE_ROW) {
        Category *cat = [[Category alloc] init];

        char *catName = (char *)sqlite3_column_text(statement,1);

        cat.catID = sqlite3_column_int(statement,0);
        cat.catName = (catName)?[NSString stringWithUTF8String:catName]:@\"\";
        NSData *dataForCachedImage = [[NSData alloc] initWithBytes:sqlite3_column_blob(statement,2)];           
        cat.catThumb = [UIImage imageWithData:dataForCachedImage];
        [dataForCachedImage release];
        cat.catLock = sqlite3_column_int(statement,3);
        cat.sort = sqlite3_column_int(statement,4);
        cat.total = [self totalSMS:cat.catID];

        [items addObject:cat];

        [cat release];
    }
    sqlite3_finalize(statement);
}

else
{
    NSLog(@\"problem with the database\");
    NSLog(@\"%d\",sqlresult);
}
return items;}

有人可以指出吗？ 谢谢     

解决方法

        在第一个代码示例中，您不会释放

dataForCachedImage

。您可以将其更改为

cat.catName = (catName)?[NSString stringWithUTF8String:catName]:@\"\";
NSData *dataForCachedImage = [[NSData alloc] initWithBytes:sqlite3_column_blob(statement,2) length: sqlite3_column_bytes(statement,2)];           
cat.catThumb = [UIImage imageWithData:dataForCachedImage];
[dataForCachedImage release];

要么

cat.catName = (catName)?[NSString stringWithUTF8String:catName]:@\"\";
NSData *dataForCachedImage = [[[NSData alloc] initWithBytes:sqlite3_column_blob(statement,2)] autorelease];           
cat.catThumb = [UIImage imageWithData:dataForCachedImage];

    ,        好的..解决了它！...问题是catThumb没有在Category类中发布。就是这样！，不需要其他修改...反正，谢谢大家！