動態使用Android意圖

Question

這是我的網格視圖片段，我打算在網格中添加50個可繪製項目，我的問題是onclick方法。如何能夠爲這50個項目創建新的Activity類。我確實有一個工作正常的onClick方法，但添加50個case語句是痛苦的，有沒有什麼辦法根據他們的類名動態地使用50個activity類。

公共類片段1擴展片段{

@Override 
    public View onCreateView (LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
     View view = inflater.inflate(R.layout.gridview,container,false); 
     GridView gridView = (GridView) view.findViewById(R.id.gridview); 
     gridView.setAdapter(new ImageAdapter(getActivity())); // uses the view to get the context instead of getActivity(). 
     gridView.setOnItemClickListener(new OnItemClickListener() 
     { 
      @Override 
      public void onItemClick(AdapterView<?> arg0, View v, int position, 
        long arg3) { 
       // TODO Auto-generated method stub 
        Intent n = null; 

         switch(position){ 
         case 0: 
         n = new Intent(getActivity(), abc.class); 
          getActivity().startActivity(n); 
          break; 
         case 1: 
          n = new Intent(getActivity(), bcd.class); 
          getActivity().startActivity(n); 
          break; 
         case 2: 
          // n = new Intent(getActivity(), cbe.class); 
          getActivity().startActivity(n); 
          break; 

        } 
      } 
     }); 
     return view; 
    } 
    @Override 
    public void onActivityCreated(Bundle savedInstanceState) { 
     super.onActivityCreated(savedInstanceState); 
    } 
    public class ImageAdapter extends BaseAdapter { 
     private Context mContext; 

     public ImageAdapter(Context c) { 
      mContext = c; 
     } 

     public int getCount() { 
      return mThumbIds.length; 
     } 

     public Object getItem(int position) { 
      return null; 
     } 

     public long getItemId(int position) { 
      return 0; 
     } 

     public View getView(int position, View convertView, ViewGroup parent) { 
       ImageView imageView; 
       if (convertView == null) { // if it's not recycled, initialize some attributes 
        imageView = new ImageView(mContext); 
        imageView.setLayoutParams(new GridView.LayoutParams(500, 500)); 
        imageView.setScaleType(ImageView.ScaleType.CENTER_CROP); 
        imageView.setPadding(8, 8, 8, 8); 
       } else { 
        imageView = (ImageView) convertView; 
       } 

       imageView.setImageResource(mThumbIds[position]); 
       return imageView; 
      } 

     private Integer[] mThumbIds = { 
       R.drawable.car, 
       R.drawable.dabangg, 
       R.drawable.dabangg, 
       R.drawable.car, 
       R.drawable.car, 
       R.drawable.dabangg 
     }; 

     } 

} 

Answer 1

也許你可以一鍵基礎上，他們在網格中選擇一個意圖額外的項目活動通過。抓住傳遞的價值，做任何需要做的事情。

例子：

gridView.setOnItemClickListener(new OnItemClickListener() 
    { 
     @Override 
     public void onItemClick(AdapterView<?> arg0, View v, int position, 
       long arg3) { 
         Myobject obj=(MyObject)adapter.getItem(position); 
         Intent intent=new Intent(CurrentActivity.this,NextActivity.class); 
         intent.putExtra("MY_KEY",obj.getMyValue()); 
         startActivity(intent); 
       } 
     } 
    }); 

然後在你的下一個活動的onCreate方法你做

int defaultValue=-1; 
int value=getIntent().getIntExtra("MY_KEY", defaultValue); 
switch (value){ 
case 0: 
break 

}

等