TypeError：Error＃2007

Question

2012年9月20日，格林威治標準時間7:27 PM + 8 ..即使代碼爲「continue」，仍然有相同的錯誤... ... 任何其他建議？ :(

HELP以前的答案仍然心不是工作.. :(

praticing教程。 IM在我的代碼，當對象的git捕手這部分得到一個錯誤..

function moveObject(e:Event):void { 
    // cycle thru objects using a for loop 
    for (var i:int=objects.length-1; i>=0; i--) { 
     //move objects down based on speed 
     objects[i].y += speed; 
     objects[i].rotation += speed; 
     // if objects leaves the stage 
     if (objects[i].y > 400) { 
      // remove it from display list 
      removeChild(objects[i]); 
      // remove it from the array backwards 
      // remove it backwards removes all problems when looping through. 
      // forward would cause confusion if you removed 5 before 4. 
      objects.splice(i, 1); 

     } 
     if (objects[i].hitTestObject(player.arrowS.sackC)) { 
      if (objects[i].typestr == "good") { 
       score += 3; 
      } else { 
       score -= 5; 
       if (score <= 0) { 
        score = 0; 
       } 
      } 
      trace(score); 
      updateScore(score); 
      removeChild(objects[i]); 
      objects.splice(i, 1); 
     } 
    } 
    } 

雖然遊戲仍然是工作的刺激性看到這一點。 這是錯誤

TypeError: Error #2007: Parameter hitTestObject must be non-null. 
at flash.display::DisplayObject/flash.display:DisplayObject::_hitTest() 
at flash.display::DisplayObject/hitTestObject() 
at adventure_fla::MainTimeline/moveObject() 

Answer 1

您正在循環訪問一個數組，如果if (objects[i].y > 400) {爲true，那麼您將該元素拼接出數組，因此objects[i]現在爲null。

然後，你去做if (objects[i].hitTestObject(player.arrowS.sackC)) {但如果第一個分析結果爲真，objects[i]不再有一個值，所以你得到發佈的錯誤。

你想做什麼，不是跳出循環，而是使用continue關鍵字，所以循環移動到下一個項目。

if (objects[i].y > 400) { 
     // remove it from display list 
     removeChild(objects[i]); 
     // remove it from the array backwards 
     // remove it backwards removes all problems when looping through. 
     // forward would cause confusion if you removed 5 before 4. 
     objects.splice(i, 1); 
     continue; //abandon the rest of this loop cycle (since objects[i] is now null), and move on to the next loop cycle, so the below code doesn't execute for the current i 
} 

除上述外，還應該檢查你的player.arrowS.sackC不爲空：

if(player && player.arrowS && player.arrowS.sackC && objects[i].hitTestObject(player.arrowS.sackC)) 

Answer 2

這個錯誤發生在VAL特定變量的ue在運行時爲空。如果hitTestObject值爲null，則檢查不同位置的值。

Answer 3

您需要存儲從該參考對象和工作參考

function moveObject(e:Event):void { 
    // cycle thru objects using a for loop 

    if(player.arrowS.sackC){ 
     var currentObject:MovieClip; 
     for (var i:int=objects.length-1; i>=0; i--) { 
      //move objects down based on speed 
      currentObject = objects[i] as MovieClip; 
      currentObject.y += speed; 
      currentObject.rotation += speed; 
      // if objects leaves the stage 
      if (currentObject.y > 400) { 
       // remove it from display list 
       removeChild(currentObject); 
       // remove it from the array backwards 
       // remove it backwards removes all problems when looping through. 
       // forward would cause confusion if you removed 5 before 4. 
       objects.splice(i, 1); 
       continue;// go to next iteration of loop 
      } 
      if (currentObject.hitTestObject(player.arrowS.sackC)) { 
       if (currentObject.typestr == "good") { 
        score += 3; 
       } else { 
        score -= 5; 
        if (score <= 0) { 
         score = 0; 
        } 
       } 
       trace(score); 
       updateScore(score); 
       removeChild(currentObject); 
       objects.splice(i, 1); 
       continue;// go to next iteration of loop 
      } 
     } 
    } 
    } 

Answer 4

function moveObject(e:Event):void { 
    // cycle thru objects using a for loop 
    for (var i:int=objects.length-1; i>=0; i--) { 
     //move objects down based on speed 
     objects[i].y += speed; 
     objects[i].rotation += speed; 
     // if objects leaves the stage 
     if (objects[i].y > 400) { 
      // remove it from display list 
      removeChild(objects[i]); 
      // remove it from the array backwards 
      // remove it backwards removes all problems when looping through. 
      // forward would cause confusion if you removed 5 before 4. 
      objects.splice(i, 1); 
      //once an element is spliced from the array the array is getting refreshed 
      //so to avoid accessing empty array(ie, after the last element is removed) in the next if condition, the loop has breaked here 
      //Don't worry about return statement as the Enter frame listener function calls till the listener has been removed 
      return; 
     } 
     if (objects[i].hitTestObject(player.arrowS.sackC)) { 
      if (objects[i].typestr == "good") { 
       score += 3; 
      } else { 
       score -= 5; 
       if (score <= 0) { 
        score = 0; 
       } 
      } 
      trace(score); 
      updateScore(score); 
      removeChild(objects[i]); 
      objects.splice(i, 1); 
      return; 
     } 
    } 
} 

Answer 5

先生我得到了答案解決我的問題它不是代碼，但在我爲動畫製作的動畫性格，因爲它包含關鍵幀都有實例名稱sackC：d

我知道這是不專業的方式o不要編碼，但我可以說..即時通訊只是一個初學者..

雖然謝什麼你所有的幫助..