У меня есть простой вид списка с адаптером. Я создаю 10+ listviewitems динамически. Затем я прокручиваю вверх и вниз снова и снова и снова... Я вижу, что доступная память продолжает снижаться...
Где мне нужно бесплатно и что? Заметьте - есть изображение, но в моем тесте я не использовал никаких изображений, поэтому это View.GONE.
Также - с помощью какого инструмента можно профилировать использование памяти на Android. Я нашел вашKit, но как его настроить для Android (я запускаю приложение на устройстве)/
Класс Activity
package org.BJ.Food4All.Activities.NewRecipe;
import org.BJ.Food4All.R;
import org.BJ.Food4All.Recipe;
import org.BJ.Food4All.Recipe.Instruction;
import org.BJ.Food4All.Activities.RecipeBook.RecipeInstructionsListViewAdapter;
import org.BJ.Food4All.Activities.RecipeBook.SharedData;
import org.BJ.Food4All.utils.CameraUtil;
import org.BJ.Food4All.utils.ImageUploadItem;
import android.app.ListActivity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.util.Log;
import android.view.ContextMenu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.EditText;
public class Instructions extends ListActivity implements OnClickListener
{
private final static String mTAG = "Instructions";
private EditText mInstructionEditText = null;
private RecipeInstructionsListViewAdapter mListViewAdapter = null;
private Recipe mEditRecipe = PrivateResources.GetRecipe();
private CameraUtil mCameraUtil = new CameraUtil(this);
private int mSelectedEntryIndex = -1;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.new_recipe_instruction_tab);
mInstructionEditText = (EditText)findViewById(R.id.newRecipeInstructionEditTextId);
View addInstructionButton = findViewById(R.id.naddInstructionButtonId);
// Sanity check
if(mInstructionEditText == null || addInstructionButton == null)
{
Log.e(mTAG, "NULL pointers");
// secure exit
finish();
}
// Set up click listeners for all the buttons
addInstructionButton.setOnClickListener(this);
mListViewAdapter = new RecipeInstructionsListViewAdapter(this, R.layout.recipes_instruction_list_single_view_entry, mEditRecipe.GetInstructions());
setListAdapter(mListViewAdapter);
registerForContextMenu(getListView());
}
public void onClick(View v)
{
switch(v.getId())
{
case R.id.naddInstructionButtonId:
AddInstructionToRecipe(v);
break;
default:
Log.e(mTAG, "Invalid ID:" + v.getId());
// secure exit
finish();
}
}
private void AddInstructionToRecipe(View v)
{
String instructionText = mInstructionEditText.getText().toString();
if(instructionText == null)
{
return;
}
Instruction newInstruction = new Instruction( mEditRecipe.GetInstructions().size() + 1, // Index
instructionText, // The instruction
null,
true);
if( mEditRecipe.AddInstruction(newInstruction) != true)
{
// TODO - ERROR
}
else
{
mListViewAdapter.notifyDataSetChanged();
}
}
/*
* (non-Javadoc)
* @see android.app.Activity#onCreateContextMenu(android.view.ContextMenu, android.view.View, android.view.ContextMenu.ContextMenuInfo)
*/
@Override
public void onCreateContextMenu(ContextMenu menu,
View v,
ContextMenuInfo menuInfo)
{
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.instructions_ctx_menu, menu);
super.onCreateContextMenu(menu, v, menuInfo);
}
/*
* (non-Javadoc)
* @see android.app.Activity#onContextItemSelected(android.view.MenuItem)
*/
@Override
public boolean onContextItemSelected(MenuItem item)
{
super.onContextItemSelected(item);
AdapterView.AdapterContextMenuInfo menuInfo;
menuInfo = (AdapterView.AdapterContextMenuInfo)item.getMenuInfo();
mSelectedEntryIndex = menuInfo.position;
switch(item.getItemId())
{
case R.id.deleteId:
mEditRecipe.RemoveInstruction(mSelectedEntryIndex);
mListViewAdapter.notifyDataSetChanged();
return true;
case R.id.takePictureId:
mCameraUtil.TakePicture();
return true;
}
return false;
}
/*
* (non-Javadoc)
* @see android.app.Activity#onActivityResult(int, int, android.content.Intent)
*/
@Override
protected void onActivityResult(int requestCode,
int resultCode,
Intent data)
{
// String imageLocation = mCameraUtil.onActivityResult(requestCode, resultCode, data);
Bitmap imageBitmap = mCameraUtil.onActivityResult(requestCode, resultCode, data);
// TODO - switch to parameter passed in the intent!!!! like TakePicture(index);
// mEditRecipe.GetInstructions().get( mSelectedEntryIndex ).SetBitmap( imageBitmap ); //SetInstructionImageLocation(imageLocation);
mSelectedEntryIndex = -1;
// Update the listviewitem with the picture
mListViewAdapter.notifyDataSetChanged();
}
}
Класс адаптера
package org.BJ.Food4All.Activities.RecipeBook;
import java.util.ArrayList;
import org.BJ.Food4All.R;
import org.BJ.Food4All.Recipe.Instruction;
import org.BJ.Food4All.utils.GlobalDefs;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.graphics.Typeface;
import android.net.Uri;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
public class RecipeInstructionsListViewAdapter extends ArrayAdapter<Instruction>
{
private Context mContext;
private ArrayList<Instruction> mItems;
private LayoutInflater mInflater;
public RecipeInstructionsListViewAdapter(Context context, int textViewResourceId, ArrayList<Instruction>items)
{
super(context, textViewResourceId, items);
mContext = context;
mItems = items;
mInflater = (LayoutInflater)mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public View getView(int position,
View convertView,
ViewGroup parent)
{
ViewHolder holder = new ViewHolder();
if (convertView == null)
{
convertView = mInflater.inflate(R.layout.recipes_instruction_list_single_view_entry, null);
}
if(super.getItem(position) != null)
{
holder.instructionIndex = (TextView) convertView.findViewById( R.id.listUp_RecipeInstructionNumberTextBoxId);
holder.instructionText = (TextView) convertView.findViewById( R.id.listUp_RecipeInstructionTextTextBoxId);
holder.instructionImage = (ImageView)convertView.findViewById( R.id.listUp_RecipeInstructionImageViewId);
Typeface tf = Typeface.createFromAsset(mContext.getAssets(), "Eras_Bold.ttf");
holder.instructionIndex.setTypeface(tf);
holder.instructionIndex.setTextSize(30);
holder.instructionIndex.setTextColor(GlobalDefs.GetHeadlineColor());
holder.instructionIndex.setText( Integer.toString(mItems.get(position).getIndex()));
tf = Typeface.createFromAsset(mContext.getAssets(), "Arial.ttf");
holder.instructionText.setTypeface(tf);
holder.instructionText.setTextSize(14);
holder.instructionText.setTextColor(Color.BLACK);
holder.instructionText.setText(mItems.get(position).getText());
Bitmap imageBitmap = mItems.get(position).GetBitmap();
// String imageLocation = mItems.get(position).GetInstructionImageLocation();
if(imageBitmap != null)
{
holder.instructionImage.setImageBitmap(imageBitmap);// setImageURI( Uri.parse(imageLocation ));
holder.instructionImage.setVisibility(View.VISIBLE);
}
else
{
holder.instructionImage.setVisibility(View.GONE);
}
convertView.setTag(holder);
convertView.setLayoutParams(new ListView.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
}
else
{
}
return convertView;
}
@Override
public boolean isEnabled(int position)
{
return true;
}
static class ViewHolder
{
TextView instructionIndex;
TextView instructionText;
ImageView instructionImage;
}
}