iphone上的對象分配儀器

Question

我在iphone上處理內存管理的方式有問題..請幫助我..我用完了想法..我試着玩下面的方法，但它開始泄漏時我正在嘗試爲對象分配字符串（例如，爲sid，first_name等分配）..我無法弄清楚如何做...這是我將從服務中獲取所有聯繫人並插入的方法它進入數據庫..它消耗更多的內存，我通過在iphone上運行分配工具和iPhone上的應用程序崩潰了，請考慮幫助我們。更好的解決方案是什麼..我認爲我的應用程序消耗更多內存，但不知道在哪裏看它..我可以發佈任何代碼，如果這不清楚..謝謝很多！

- (void) get_entry_listHandler: (id) value{ 

    NSString *salutation,*sugar_id,*first_name,*last_name,*title1,*department,*phone_home,*phone_mobile,*phone_work,*phone_other,*phone_fax,*assistant,*assistant_phone,*primary_address_street,*primary_address_city,*primary_address_state,*primary_address_postalcode,*custom; 
    NSString *primary_address_country,*alt_address_street,*alt_address_city,*alt_address_state,*alt_address_postalcode,*alt_address_country,*date_entered,*date_modified,*deleted,*do_not_call,*birthdate,*lead_source,*description,*email1,*email2,*account_name,*account_id,*id1; 

    // Handle errors 
    if([value isKindOfClass:[NSError class]]) { 
     NSLog(@"%@", value); 
     return; 
    } 

    // Handle faults 
    if([value isKindOfClass:[SoapFault class]]) { 
     NSLog(@"%@", value); 
     return; 
    }    

    // Do something with the SCRMget_entry_list_result* result 
    SCRMget_entry_list_result* result = (SCRMget_entry_list_result*)value; 
    //NSLog(@"get_entry_list returned the value: %@", result); 
    //NSLog(@"%@", result.entry_list); 
    NSLog(@"%@", result.error); 

    SCRMsugarsoap* service = [[SCRMsugarsoap alloc] initWithUrl:serverURL]; 
    SCRMentry_value* entry; 
    for(NSString * myStr in result.entry_list) { 
     entry = (SCRMentry_value*)myStr; 
     //NSLog(@"1st %@",entry.name_value_list); 
     //NSLog(@"1st %@",entry.id); 
     //NSLog(@"1st %@",entry.module_name); 

     for(NSString * myStr1 in entry.name_value_list) { 

      SCRMname_value* value1 = (SCRMname_value*)myStr1; 
      if ([value1.name isEqualToString:@"id"]) 
       sugar_id = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"salutation"]) 
       salutation = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"first_name"]) 
       first_name = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"last_name"]) 
       last_name = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"title"]) 
       title1 = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"department"]) 
       department = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"phone_home"]) 
       phone_home = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"phone_mobile"]) 
       phone_mobile = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"phone_work"]) 
       phone_work = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"phone_other"]) 
       phone_other = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"phone_fax"]) 
       phone_fax = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"assistant"]) 
       assistant = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"assistant_phone"]) 
       assistant_phone = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"primary_address_street"]) 
       primary_address_street = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"primary_address_city"]) 
       primary_address_city = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"primary_address_state"]) 
       primary_address_state = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"primary_address_postalcode"]) 
       primary_address_postalcode = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"primary_address_country"]) 
       primary_address_country = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"alt_address_street"]) 
       alt_address_street = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"alt_address_city"]) 
       alt_address_city = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"alt_address_state"]) 
       alt_address_state = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"alt_address_postalcode"]) 
       alt_address_postalcode = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"alt_address_country"]) 
       alt_address_country = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"date_entered"]) 
       date_entered = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"date_modified"]) 
       date_modified = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"deleted"]) 
       deleted = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"do_not_call"]) 
       do_not_call = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"birthdate"]) 
       birthdate = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"lead_source"]) 
       lead_source = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"description"]) 
       description = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"email1"]) 
       email1 = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"email2"]) 
       email2 = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else if ([value1.name isEqualToString:@"account_name"]) 
       account_name = [[NSString alloc] initWithFormat: @"%@",value1.value]; 


      else if ([value1.name isEqualToString:@"account_id"]) 
       account_id = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      else 
       custom = [[NSString alloc] initWithFormat: @"%@",value1.value]; 
      } 

     NSDateFormatter *df = [[NSDateFormatter alloc] init]; 
     [df setFormatterBehavior:NSDateFormatterBehavior10_4]; 
     [df setDateFormat:@"yyy-MM-dd HH:mm:ss"]; 
     NSDate *date_moded = [df dateFromString:date_modified]; 
     NSDate *lastSync = [df dateFromString:lastSyncTime]; 
     NSDate *date_enter = [df dateFromString:date_entered]; 
     [df release]; 

     if ([[date_moded laterDate:lastSync]isEqualToDate:date_moded] && lastSyncTime != nil && [date_enter isEqualToDate:date_moded]) 
      id1 = [[NSString alloc]initWithFormat:@"%d",primaryKeyCount]; 
     else if ([[date_moded laterDate:lastSync]isEqualToDate:date_moded] && lastSyncTime != nil) 
      id1 = [db getPrimaryKey:sugar_id]; 
     else 
      id1 = [[NSString alloc]initWithFormat:@"%d",primaryKeyCount]; 

     [db insertRecordIntoTableNamed: @"Contacts" withField1: @"id" field1Value: id1 andField2: @"sugar_id" field2Value: sugar_id 
         andField3: @"salutation" field3Value: salutation andField4: @"first_name" field4Value: first_name 
         andField5: @"last_name" field5Value: last_name andField6: @"title" field6Value: title1 
         andField7: @"department" field7Value: department andField8: @"phone_home" field8Value: phone_home 
         andField9: @"phone_mobile" field9Value: phone_mobile andField10: @"phone_work" field10Value: phone_work 
         andField11: @"phone_other" field11Value: phone_other andField12: @"phone_fax" field12Value: phone_fax 
         andField13: @"assistant" field13Value: assistant andField14: @"assistant_phone" field14Value: assistant_phone 
         andField15: @"primary_address_street" field15Value: primary_address_street andField16: @"primary_address_city" field16Value: primary_address_city 
         andField17: @"primary_address_state" field17Value: primary_address_state andField18: @"primary_address_postalcode" field18Value: primary_address_postalcode 
         andField19: @"primary_address_country" field19Value: primary_address_country andField20: @"alt_address_street" field20Value: alt_address_street 
         andField21: @"alt_address_city" field21Value: alt_address_city andField22: @"alt_address_state" field22Value: alt_address_state 
         andField23: @"alt_address_postalcode" field23Value: alt_address_postalcode andField24: @"alt_address_country" field24Value: alt_address_country 
         andField25: @"date_entered" field25Value: date_entered andField26: @"date_modified" field26Value: date_modified 
         andField27: @"deleted" field27Value: deleted andField28: @"do_not_call" field28Value: do_not_call 
         andField29: @"birthdate" field29Value: birthdate andField30: @"lead_source" field30Value: lead_source 
         andField31: @"description" field31Value: description andField32: @"email1" field32Value: email1 
         andField33: @"email2" field33Value: email2 andField34: @"account_name" field34Value: account_name 
         andField35: @"account_id" field35Value: account_id andField36: @"custom" field36Value: custom]; 
     primaryKeyCount++; 
     currentCount++; 
     //NSLog(@"%D",i); 
    } 
    [salutation release]; 
    [sugar_id release]; 
    [first_name release]; 
    [last_name release]; 
    [title1 release]; 
    [department release]; 
    [phone_home release]; 
    [phone_mobile release]; 
    [phone_work release]; 
    [phone_fax release]; 
    [phone_other release]; 
    [assistant release]; 
    [assistant_phone release]; 
    [primary_address_street release]; 
    [primary_address_city release]; 
    [primary_address_state release]; 
    [primary_address_postalcode release]; 
    [primary_address_country release]; 
    [alt_address_street release]; 
    [alt_address_city release]; 
    [alt_address_state release]; 
    [alt_address_postalcode release]; 
    [alt_address_country release]; 
    [custom release]; 
    [date_entered release]; 
    [deleted release]; 
    [do_not_call release]; 
    [birthdate release]; 
    [lead_source release]; 
    [description release]; 
    [email1 release]; 
    [email2 release]; 
    [account_name release]; 
    [account_id release]; 

    float expected = (float) contactEntries; 
    float gotSoFar = (float) currentCount; 


    syncViewController.progressView.progress = ((float)((gotSoFar - 1)/(expected + 1))); 
    syncViewController.progressLabel.text=[NSString stringWithFormat:@"Syncing %d Contacts",contactEntries]; 

    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; 
    integer = [NSNumber numberWithInt:primaryKeyCount]; 
    [defaults setObject:integer forKey:@"primaryKeyCount"]; 
    [defaults synchronize]; 

    moduleViewController.db = db; 
    int a = result.next_offset; 
    int b = contactEntries; 
    while (result.result_count == 20 /*&& result.next_offset < contactEntries*/) { 
     if (lastSyncTime == nil) { 
      [service get_entry_list:self action:@selector(get_entry_listHandler:) session:sessionId module_name: @"Contacts" query: @"" order_by: @"" offset: result.next_offset select_fields: [[[SCRMselect_fields alloc] init]autorelease] max_results: contactEntries deleted: 0]; 
      [service release]; 
      return; 
      //break; 
     } 
     else { 
      [service get_entry_list:self action:@selector(get_entry_listHandler:) session:sessionId module_name: @"Contacts" query: finalQuery order_by: @"" offset: result.next_offset select_fields: [[[SCRMselect_fields alloc] init]autorelease] max_results: contactEntries deleted: 0]; 
      [service release]; 
      return; 
      //break; 
     } 
    } 

    if (a >= b) { 
     [UIApplication sharedApplication].networkActivityIndicatorVisible = NO; 
     [settingsViewController.navigationController pushViewController:moduleViewController animated:YES]; 
     NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; 
     [defaults setBool:NO forKey:@"reset"]; 
     [defaults synchronize]; 
     [finalQuery release]; 
    } 
    /*else if (a >= b && syncing == YES) { 
     [UIApplication sharedApplication].networkActivityIndicatorVisible = NO; 
     [moduleViewController reload]; 
    }*/ 

    [service release]; 
    [id1 release]; 

} 

編輯：

我擺脫了所有的泄漏，但任何一個可以請告訴我如何檢查iphone..Please對象分配儀器看到下面的screenshot..My應用得到一旦它加載所有的4200聯繫人並且聯繫人永遠不會顯示在桌面視圖上時崩潰。什麼可能是問題..我確保聯繫人保存到數據庫的位置是無泄漏的。在下面截圖究竟應該尋找什麼..這是總分配或生活..請讓我知道的人..我完全精疲力竭..感謝你的時間很多..

Answer 1

你應該把[string release]; for（NSString * myStr in result.entry_list）循環中的行。每次調用alloc時，都必須有相應的釋放呼叫。

更好的方法是使用[NSString stringWithFormat：]而不是[[NSString alloc] initWithFormat：]，這樣就不需要手動釋放它們。

我的應用程序被撞壞，一旦它加載所有 4200個觸點和觸點 永遠顯示在上表視圖viewnever顯示的表

4200接觸讓你的循環「大緊」 。正如taskinoor所建議的那樣，您可以爲每幾個循環創建並排出NSAutoreleasePool，以減少內存足跡。例如：

int counter = 0; 
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; 
for (...) { 
    if (++counter == 100) { 
     counter = 0; 
     [pool release]; 
     pool = [[NSAutoreleasePool alloc] init]; 
    } 
    //busy working... 
} 
[pool release]; 

如果響應系統事件花費太長時間，您的應用程序也可能被iOS終止。這種機制被稱爲看門狗超時。在這種情況下，您會在崩潰報告中找到異常代碼0x8badf00d。您可能希望將工作分成較小批次或使用輔助線程，以便主線程不會太忙。

Answer 2

這是一段很長的代碼，可能是我錯了。但我的猜測是這樣的。

 
for(NSString * myStr in result.entry_list) { 
    // lots of alloc 
} 
// releases in this point 

現在，如果你有result.entry_list（我想你有）多個條目，你不泄露的字符串？假設你已經在第一回閤中獲得了分數，並且在下一次分配時你正在泄漏這個數據。明白了我的觀點？

如果這是問題，那麼你應該在循環內移動釋放調用。

另一個解決方案是，似乎你不需要這個範圍以外的字符串。那麼爲什麼你不使用autorealse方法來創建它？

str = [NSString stringWithFormat:@"what_you_need"];

您現在不需要釋放它們。儘管在這種情況下，您應該考慮創建自己的自動釋放池，因爲數據量可能很大。