Please, help me to find a solution how to set my checkboxes visible when I click on menu item "delete" and set invisible when I press "confirm" or "cancel". I use SimpleCursorAdapter, cuz listview is filled from database with cursor loader... here is my code:
MainActivity
public class MainActivity extends ActionBarActivity implements LoaderManager.LoaderCallbacks<Cursor>{
final String LOG = "phonebookLogs";
private static final int LOADER_ID = 1;
Intent intentAddContact;
ListView lvMain;
CheckBox cbxList;
MenuItem addContact, deleteContact, settings, expimp, confirmDelete, cancelDelete;
DB mDB;
SimpleCursorAdapter scAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//find ListView
lvMain = (ListView)findViewById(R.id.lvMain);
//calling for creating adapter
onCreateAdapter();
}
public void onCreateAdapter(){
String[] from = new String[] { DB.COL_LINK, DB.COL_SURNAME, DB.COL_NAME };
int[] to = new int[] { R.id.ivPhoto, R.id.tvSurname, R.id.tvName, };
if(to[0] == 0){
to[0] = R.drawable.default_contact;
}
scAdapter = new SimpleCursorAdapter(this, R.layout.item, null, from, to, 0);
lvMain.setAdapter(scAdapter);
// loader for reading data
getSupportLoaderManager().initLoader(LOADER_ID, null, this);
}
public void deleteRecord(){
//when MenuItem "Delete" is clicked
addContact.setVisible(false);
deleteContact.setVisible(false);
settings.setVisible(false);
expimp.setVisible(false);
confirmDelete.setVisible(true);
cancelDelete.setVisible(true);
}
public void onCancelDeleteRecord(){
////when MenuItem "cancel" is clicked
addContact.setVisible(true);
deleteContact.setVisible(true);
settings.setVisible(true);
expimp.setVisible(true);
confirmDelete.setVisible(false);
cancelDelete.setVisible(false);
}
public void confirmDeleteRecord(){
////when MenuItem "confirm" is clicked
addContact.setVisible(true);
deleteContact.setVisible(true);
settings.setVisible(true);
expimp.setVisible(true);
confirmDelete.setVisible(false);
cancelDelete.setVisible(false);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onPrepareOptionsMenu(Menu menu)
{
//find all MenuItems
addContact = menu.findItem(R.id.addContact);
deleteContact = menu.findItem(R.id.deleteContact);
settings = menu.findItem(R.id.settings);
expimp = menu.findItem(R.id.expimp);
confirmDelete = menu.findItem(R.id.confirmDelete);
cancelDelete = menu.findItem(R.id.cancelDelete);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item){
switch(item.getItemId()){
case R.id.addContact:
intentAddContact = new Intent(this, NewContact.class);
startActivity(intentAddContact);
break;
case R.id.deleteContact:
deleteRecord();
break;
case R.id.settings:
break;
case R.id.expimp:
break;
case R.id.confirmDelete:
confirmDeleteRecord();
break;
case R.id.cancelDelete:
onCancelDeleteRecord();
break;
default:
break;
}
return super.onOptionsItemSelected(item);
}
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle bndl) {
return new MyCursorLoader(this, mDB);
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
scAdapter.swapCursor(cursor);
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
scAdapter.swapCursor(null);
}
}
DB.class and CursorLoader.class are fine, simple query and loading. and my XML-file for ListView
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="@dimen/margin"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_margin="@dimen/margin"
android:layout_weight="0.5"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="@dimen/margin"
android:orientation="vertical" >
<ImageView
android:id="@+id/ivPhoto"
android:layout_width="@dimen/imageWidth"
android:layout_height="@dimen/imageHeight"
android:layout_gravity="center_vertical"
android:contentDescription="@string/photoDescription"
android:src="@drawable/default_contact" />
</LinearLayout>
<TextView
android:id="@+id/tvName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="@dimen/margin"
android:text=""
android:textSize="@dimen/textSize" />
<TextView
android:id="@+id/tvSurname"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="@dimen/margin"
android:text=""
android:textSize="@dimen/textSize" />
</LinearLayout>
<CheckBox
android:id="@+id/cbxList"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginLeft="@dimen/margin"
android:layout_weight="0.2"
android:visibility="invisible" />
</LinearLayout>
I have read a lot already, but how to realize it without creating my own adapter still can't get... will be thanksfull to any help in finding solution!
You can set your checkbox as visible with: cbxlist.setVisibility(View.VISIBLE);
And if you want it completely gone, use (ie make it look as if it was never added): cbxlist.setVisibility(View.GONE);
If you want it to be just invisible, but still occupy the same space: cbxlist.setVisibility(View.INVISIBLE);
Edit:
for(int i = 0; i < lvMain.getChildCount(); i++) {
lvMain.getChildAt(i).findViewById(R.id.cbxList).setVisibility(View.VISIBLE);
}
That should set all of your checkbox's to visible. Similarly call for View.INVISIBLE when required.