iPhoneのNSMutableArrayで値を動的に変更するにはどうすればよいですか？

Question

私は10個のボタンを持っており、私はスイッチケースを使ってボタンアクションを書いた。私は各ボタンをクリックすると、いくらかの量の値が増加します。私はカウント値の変数を設定するための10の異なる変数を使用している場合、それは動作します。しかしこれを達成する他の方法はありますか？

可変配列内の値を動的に変更したいと思います。テーブルビューで

-(IBAction) btnAction : (id) sender{ 

     switch (btn.tag) { 

       case 0: 
       // amountArray is mutable array. 

        startCocoCount = startCocoCount + 10; 

        //NSString *str = [NSString stringWithFormat:@"%d", startCocoCount]; 

       //[amountArray addObject:str]; 

       break; 

      case 1: 

       startCocoCount = startCocoCount + 15; 

       //NSString *str = [NSString stringWithFormat:@"%d", startCocoCount]; 

         //[amountArray addObject:str]; 


       break; 

      case 2: 
       startCocoCount = startCocoCount + 20; 

       //NSString *str = [NSString stringWithFormat:@"%d", startCocoCount]; 

         //[amountArray addObject:str]; 

       break; 

      case 3: 
       startCocoCount = startCocoCount + 25; 

       //NSString *str = [NSString stringWithFormat:@"%d", startCocoCount]; 

         //[amountArray addObject:str]; 


       break; 

      case 4: 
       startCocoCount = startCocoCount + 30; 

       //NSString *str = [NSString stringWithFormat:@"%d", startCocoCount]; 

         //[amountArray addObject:str]; 


       break; 

      case 5: 
        startCocoCount = startCocoCount + 35; 

       //NSString *str = [NSString stringWithFormat:@"%d", startCocoCount]; 

         //[amountArray addObject:str]; 

       break; 

      case 6: 
        startCocoCount = startCocoCount + 40; 

       //NSString *str = [NSString stringWithFormat:@"%d", startCocoCount]; 

         //[amountArray addObject:str]; 

       break; 

      case 7: 

         startCocoCount = startCocoCount + 50; 

       //NSString *str = [NSString stringWithFormat:@"%d", startCocoCount]; 

         //[amountArray addObject:str]; 

       break; 

      case 8: 

         startCocoCount = startCocoCount + 60; 

       //NSString *str = [NSString stringWithFormat:@"%d", startCocoCount]; 

         //[amountArray addObject:str]; 

       break; 

      case 9: 
       startCocoCount = startCocoCount + 20; 

       //NSString *str = [NSString stringWithFormat:@"%d", startCocoCount]; 

         //[amountArray addObject:str]; 

       break; 

      case 10: 
         startCocoCount = startCocoCount + 20; 

       //NSString *str = [NSString stringWithFormat:@"%d", startCocoCount]; 

         //[amountArray addObject:str]; 

       break; 

      default: 
       break; 
     } 
} 

、

cell.textLabel.text = [amountArray objectAtindex:indexPath]; 

私は単一の変数を使用していた場合、それはすべての条件に設定されないので、どのように私はこれを達成することができます例：については

？

Answer 1

これを試すことができます。それが動作します。

int startCocoCount; 

NSMutableArray *dataArray = [[NSMutableArray alloc] init]; 
for(int i=0;i<11;i++) 
{ 
    [dataArray addObject:@"0"]; 
} 

及び方法が、それは次のようになる

：

-(IBAction) btnAction : (id) sender{ 

    switch ([sender tag]) { 

     case 0: 

      startCocoCount = startCocoCount + 10; 

      [dataArray replaceObjectAtIndex:0 withObject:[NSString stringWithFormat:@"%d", [[dataArray objectAtIndex:0] intValue] + startCocoCount]]; 

      break; 

     case 1: 

      startCocoCount = startCocoCount + 15; 

      [dataArray replaceObjectAtIndex:1 withObject:[NSString stringWithFormat:@"%d", [[dataArray objectAtIndex:1] intValue] + startCocoCount]]; 

      break; 

     case 2: 
      startCocoCount = startCocoCount + 20; 

      [dataArray replaceObjectAtIndex:2 withObject:[NSString stringWithFormat:@"%d", [[dataArray objectAtIndex:2] intValue] + startCocoCount]]; 

      break; 

     case 3: 
      startCocoCount = startCocoCount + 25; 

      [dataArray replaceObjectAtIndex:3 withObject:[NSString stringWithFormat:@"%d", [[dataArray objectAtIndex:3] intValue] + startCocoCount]]; 

      break; 

     case 4: 
      startCocoCount = startCocoCount + 30; 

      [dataArray replaceObjectAtIndex:4 withObject:[NSString stringWithFormat:@"%d", [[dataArray objectAtIndex:4] intValue] + startCocoCount]]; 

      break; 

     case 5: 
      startCocoCount = startCocoCount + 35; 

      [dataArray replaceObjectAtIndex:5 withObject:[NSString stringWithFormat:@"%d", [[dataArray objectAtIndex:5] intValue] + startCocoCount]]; 

      break; 

     case 6: 
      startCocoCount = startCocoCount + 40; 

      [dataArray replaceObjectAtIndex:6 withObject:[NSString stringWithFormat:@"%d", [[dataArray objectAtIndex:6] intValue] + startCocoCount]]; 

      break; 

     case 7: 

      startCocoCount = startCocoCount + 50; 

      [dataArray replaceObjectAtIndex:7 withObject:[NSString stringWithFormat:@"%d", [[dataArray objectAtIndex:7] intValue] + startCocoCount]]; 

      break; 

     case 8: 

      startCocoCount = startCocoCount + 60; 

      [dataArray replaceObjectAtIndex:8 withObject:[NSString stringWithFormat:@"%d", [[dataArray objectAtIndex:8] intValue] + startCocoCount]]; 

      break; 

     case 9: 
      startCocoCount = startCocoCount + 20; 

      [dataArray replaceObjectAtIndex:9 withObject:[NSString stringWithFormat:@"%d", [[dataArray objectAtIndex:9] intValue] + startCocoCount]]; 

      break; 

     case 10: 
      startCocoCount = startCocoCount + 20; 

      [dataArray replaceObjectAtIndex:10 withObject:[NSString stringWithFormat:@"%d", [[dataArray objectAtIndex:10] intValue] + startCocoCount]]; 

      break; 

     default: 
      break; 
    } 
} 

は、何か質問があるなら、私に教えてください。

Answer 2

NSNumberを使用すると、配列に格納することができます。インデックスで配列にアクセスするには、配列がNSNumberで事前に設定されている必要があります。

//You will need to know the index otherwise use a dictionary with named keys 
NSNumber *num = [amountArray objectAtIndex:index]; 
num = [NSNumber numberWithInt:[num intValue] + 20]; 
[amountArray replaceObjectAtIndex:index withObject:num]; 

Answer 3

私はあなたが値を保持するために、ボタンのタグを設定することができ

このような

-(IBAction) btnAction : (id) sender{ 

startCocoCount = startCocoCount + btn.tag; 
} 

を簡略化することができると思います。