gridview單元格查看位置更改後滾動...顏色被設置爲不同的單元格，而不是單擊的單元格

Question

我有一個5列的網格視圖，我想爲整個行着色，這意味着點擊5個單元格。點擊工作正常，但當我滾動他們點擊顏色設置兩三行後單元格，因爲它更改視圖位置。

這是我的GridView：

<GridView 
    android:id="@+id/gridView2" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:background="@color/CornflowerBlue" 
    android:gravity="center" 
    android:horizontalSpacing="5dp" 
    android:numColumns="5" 
    android:verticalSpacing="5dp"> 
</GridView> 

具有custonm佈局：

<TextView xmlns:android="http://schemas.android.com/apk/res/android" 
android:id="@android:id/text1" 
android:layout_width="match_parent" 
android:layout_height="wrap_content" 
android:background="@color/LightBlue" 
android:gravity="center_vertical" 
android:minHeight="?android:attr/listPreferredItemHeight" 
android:paddingLeft="6dip" 
android:textAppearance="?android:attr/textAppearanceLarge" 
android:textSize="22sp" /> 

和我的gridview的適配器代碼：

public class Fragment2 extends Fragment { 
    ............................ 


gridView2 = (GridView) getView().findViewById(R.id.gridView2); 
     ArrayAdapter<String> adapter2 = new ArrayAdapter<String>(
       getActivity(), R.layout.custom_layout, stg1); //stg1-array 
     gridView2.setAdapter(adapter2);   
     gridView2.setOnItemClickListener(new OnItemClickListener() { 
      public void onItemClick(AdapterView<?> parent, View view, 
        int position, long id) { 
       String message; 

       int p = (int) Math.ceil(position/5) * 5; //to color 5 cells from starting on click 

       try{ 
      gridView2.getChildAt(p).setBackgroundColor(Color.GREEN); 
      gridView2.getChildAt(p+1).setBackgroundColor(Color.GREEN); 
      gridView2.getChildAt(p+2).setBackgroundColor(Color.GREEN); 
      gridView2.getChildAt(p+3).setBackgroundColor(Color.GREEN); 
      gridView2.getChildAt(p+4).setBackgroundColor(Color.GREEN); 



      } 
     }); 

最初，它工作正常，但滾動彩色後被設置爲除點擊之外的其他單元格？我該怎麼辦？？我不想使用底座適配器....

Answer 1

試試這個，讓我知道它是如何工作的。

public int p=-1; 

/* 
...OTHER STUFF... 

*/ 

gridView2 = (GridView) getView().findViewById(R.id.gridView2); 

ListAdapter<String> adapter2 = new ListAdapter<String>(
      getActivity(), R.layout.custom_layout, stg1); //stg1-array 
    gridView2.setAdapter(adapter2);   
    gridView2.setOnItemClickListener(new OnItemClickListener() { 
     public void onItemClick(AdapterView<?> parent, View view, 
       int position, long id) { 
      String message; 

      int p = (int) Math.ceil(position/5) * 5; //to color 5 cells from starting on click 
     } 
    }); 

/* 
...OTHER STUFF... 

*/ 

public class ListAdapter extends ArrayAdapter<String> { 
private List<String> items; 

public ListAdapter(Context context, int resource, List<Item> items) { 
super(context, resource, items); 
this.items = items; 
} 

@Override 
public View getView(int position, View convertView, ViewGroup parent) { 

View v = convertView; 

if (v == null) { 
    LayoutInflater vi; 
    vi = LayoutInflater.from(getContext()); 
    v = vi.inflate(R.layout.custom_layout, null); 
    if(position==p) v.setBackgroundColor(Color.GREEN); 
    if(position==p+1) v.setBackgroundColor(Color.GREEN); 
    if(position==p+2) v.setBackgroundColor(Color.GREEN); 
    if(position==p+3) v.setBackgroundColor(Color.GREEN); 
    if(position==p+4) v.setBackgroundColor(Color.GREEN); 
}  

return v; 

} 
}