facing error which says" Throwing OutOfMemoryError failed to allocate a 42793710 byte allocation with 52488 free bytes and 22mb until OOM

public void onSuccess(String response)
			{
				try{
					JSONObject obj = new JSONObject(response);
					final JSONArray jsonArray = obj.getJSONArray("PopulateSuppliersListResult");
					
					int length = jsonArray.length();
					
				      List<String> listContents = new ArrayList<String>(length);
				      for (int i = 0; i < length; i++)
				      {
				    	  JSONObject user = jsonArray.getJSONObject(i);
				    	   	  listContents.add(user.getString("ID"));
				      }
				      supname= (Spinner) findViewById(R.id.spinner1);
						
				       supname.setAdapter(new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1, listContents));
				       supname.setOnItemSelectedListener(new OnItemSelectedListener() {

						@Override
						public void onItemSelected(AdapterView<?> parent,
								View view, int position, long id) {
							// TODO Auto-generated method stub
							try {
								iActivationStatusID=jsonArray.getJSONObject(position).getString("ID");
								} catch (JSONException e) {
								// TODO Auto-generated catch block
								e.printStackTrace();
							}
						}

						@Override
						public void onNothingSelected(AdapterView<?> parent) {
							// TODO Auto-generated method stub
							
						}
					});
				}catch(JSONException e){
					e.printStackTrace();
				}
			}
		});