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Android: Custom ListAdapter extending BaseAdapter crashes on application launch

开发者 https://www.devze.com 2022-12-23 15:41 出处:网络
Data being pulled from a local DB, then mapped using a cursor. Custom Adapter displays data similar to a ListView. As items are added/deleted from the DB, the adapter is supposed to refresh. The solut

Data being pulled from a local DB, then mapped using a cursor. Custom Adapter displays data similar to a ListView. As items are added/deleted from the DB, the adapter is supposed to refresh. The solution attempted below crashes the application at launch. Any suggestions?

Thanks in advance, -D

 @Override
 public View getView(int position, View convertView, ViewGroup parent) {
   View v = convertView;
   ViewGroup p = parent;            
   if (v == null) {
     LayoutInflater vi 开发者_开发百科= (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
     v = vi.inflate(R.layout.items_row, p);
   }
   int size = mAdapter.getCount();
   Log.d(TAG, "position " + position + " Size " + size);
   if(size != 0){
     if(position < size) return mAdapter.getView(position, v, p);
     Log.d(TAG, "-position " + position + " Size " + size);
   }
   return null;
 }

Exception:

03-23 00:14:10.392: ERROR/AndroidRuntime(718): java.lang.UnsupportedOperationException: addView(View, LayoutParams) is not supported in AdapterView
03-23 00:14:10.392: ERROR/AndroidRuntime(718):     at android.widget.AdapterView.addView(AdapterView.java:461)
03-23 00:14:10.392: ERROR/AndroidRuntime(718):     at android.view.LayoutInflater.inflate(LayoutInflater.java:415)
03-23 00:14:10.392: ERROR/AndroidRuntime(718):     at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
03-23 00:14:10.392: ERROR/AndroidRuntime(718):     at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
03-23 00:14:10.392: ERROR/AndroidRuntime(718):     at com.xyz.abc.CustomSeparatedListAdapter.getView(CustomSeparatedListAdapter.java:90)
...


v = vi.inflate(R.layout.items_row, p);

Add a false third parameter to that call, and I think your problem will go away. The call should become:

v = vi.inflate(R.layout.items_row, p, false);


change this code

v = vi.inflate(R.layout.items_row, p);

to

v = vi.inflate(R.layout.items_row, null );
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