package com.resturant.vivaatech.resturantapp.Adapters;
import android.support.v7.widget.RecyclerView;
import android.util.SparseBooleanArray;
import android.widget.Filter;
import java.util.ArrayList;
import java.util.List;
/**
* Created by arifh_000 on 6/14/2016.
*/
public abstract class SelectableAdapter<VH extends RecyclerView.ViewHolder> extends RecyclerView.Adapter<VH> {
@SuppressWarnings("unused")
private static final String TAG = SelectableAdapter.class.getSimpleName();
private SparseBooleanArray selectedItems;
public SelectableAdapter () {
selectedItems = new SparseBooleanArray ();
}
/**
* Indicates if the item at position position is selected
* @param position Position of the item to check
* @return true if the item is selected, false otherwise
*/
public boolean isSelected(int position) {
return getSelectedItems().contains(position);
}
/**
* Toggle the selection status of the item at a given position
* @param position Position of the item to toggle the selection status for
*/
public void toggleSelection(int position) {
if (selectedItems.get(position, false)) {
selectedItems.delete(position);
} else {
selectedItems.put(position, true);
}
notifyItemChanged(position);
}
/**
* Clear the selection status for all items
*/
public void clearSelection() {
List<Integer> selection = getSelectedItems();
selectedItems.clear();
for (Integer i : selection) {
notifyItemChanged(i);
}
}
/**
* Count the selected items
* @return Selected items count
*/
public int getSelectedItemCount() {
return selectedItems.size();
}
/**
* Indicates the list of selected items
* @return List of selected items ids
*/
public List<Integer> getSelectedItems() {
List<Integer> items = new ArrayList<>(selectedItems.size());
for (int i = 0; i < selectedItems.size(); ++i) {
items.add(selectedItems.keyAt(i));
}
return items;
}
}
How to prevent fragments from multiple instance
private void replaceFragment (Fragment fragment){
String backStateName = fragment.getClass().getName();
FragmentManager manager = getSupportFragmentManager();
boolean fragmentPopped = manager.popBackStackImmediate (backStateName, 0);
if (!fragmentPopped){ //fragment not in back stack, create it.
FragmentTransaction ft = manager.beginTransaction();
ft.replace(R.id.content_frame, fragment);
ft.addToBackStack(backStateName);
ft.commit();
}
}
For my case:
I have declared it in a class
public static void replaceFragment (FragmentManager manager,Fragment fragment){
String backStateName = fragment.getClass().getName();
String fragmentTag = backStateName;
boolean fragmentPopped = manager.popBackStackImmediate(backStateName, 0);
if (!fragmentPopped && manager.findFragmentByTag(fragmentTag) == null) { //fragment not in back stack, create it.
FragmentTransaction ft = manager.beginTransaction();
ft.replace(R.id.fragmentContainer, fragment, fragmentTag);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.addToBackStack(backStateName);
ft.commit();
}
}
and used it as :
Functions.replaceFragment(getFragmentManager(),new OrderFoodTypeFragment());
Reference :
Open Android setting page Programaticallu
startActivityForResult(new Intent(android.provider.Settings.ACTION_SETTINGS), 0);
link:http://stackoverflow.com/questions/19517417/opening-android-settings-programmaticallyHow to Add customize Android DialogFragment
public class ColorDialogFragment extends SherlockDialogFragment {
public ColorDialogFragment() {
//You need to provide a default constructor
}
@Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.dialog_color_picker, container);
// R.layout.dialog_color_picker is the custom layout of my dialog
WindowManager.LayoutParams wmlp = getDialog().getWindow().getAttributes();
wmlp.gravity = Gravity.LEFT;
return view;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setStyle(DialogFragment.STYLE_NO_FRAME, R.style.colorPickerStyle);
// this setStyle is VERY important.
// STYLE_NO_FRAME means that I will provide my own layout and style for the whole dialog
// so for example the size of the default dialog will not get in my way
// the style extends the default one. see bellow.
}
}
<style name="colorPickerStyle" parent="Theme.Sherlock.Light.Dialog">
<item name="android:backgroundDimEnabled">false</item>
<item name="android:cacheColorHint">@android:color/transparent</item>
<item name="android:windowBackground">@android:color/transparent</item>
</stylei Have done it as :
<style name="colorPickerStyle" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="android:backgroundDimEnabled">true</item>
<item name="android:cacheColorHint">@android:color/white</item>
<item name="android:windowBackground">@android:color/white</item>
</style>
http://stackoverflow.com/questions/14946887/setting-the-size-of-a-dialogfragmentHow to Add Video View with Volley
How to convert ArrayList to HashSet for eliminating duplicates
List<String> al = new ArrayList<>();
// add elements to al, including duplicates
Set<String> hs = new HashSet<>();
hs.addAll(al);
al.clear();
al.addAll(hs);http://stackoverflow.com/questions/203984/how-do-i-remove-repeated-elements-from-arraylist
How to set fixed line and character at android textview
How to Send data from one Fragment to another fragment in android
http://stackoverflow.com/questions/7149802/how-to-transfer-some-data-to-another-fragment
Fragment fragment = new Fragment();
Bundle bundle = new Bundle();
bundle.putInt(key, value);
fragment.setArguments(bundle);
Bundle has put methods for lots of data types. See this
Then in your Fragment, retrieve the data (e.g. in onCreate() method) with:
Bundle bundle = this.getArguments();
int myInt = bundle.getInt(key, defaultValue);
How to Disable Navigation Drawer for specific fragments
1 . Create an interface first
public interface DrawerLocker {
public void setDrawerEnabled(boolean enabled);
}
2. Implement interface on Activity that’s has navigation drawer / Container Activity
public class MainActivity extends Activity implements DrawerLocker {
public void setDrawerEnabled(boolean enabled) {
int lockMode = enabled ? DrawerLayout.LOCK_MODE_UNLOCKED :
DrawerLayout.LOCK_MODE_LOCKED_CLOSED;
drawer.setDrawerLockMode(lockMode);
toggle.setDrawerIndicatorEnabled(enabled);
}
...
}3. Cast that interface on you specific fragments
((DrawerLocker) getActivity()).setDrawerEnabled(false);
RecyclerView OnTouch Listener
1. implements RecyclerView.OnItemTouchListener
2. final GestureDetector mGestureDetector = new GestureDetector(getActivity().getApplicationContext(), new GestureDetector.SimpleOnGestureListener() {
@Override public boolean onSingleTapUp(MotionEvent e) {
return true;
}
});
3. mRecyclerView.addOnItemTouchListener(
new OrderFoodTypeFragment(getActivity().getApplicationContext(), new OrderFoodTypeFragment.OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
clickPosition =position;
}
})
);
androidprogramminglab 