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Simple RecyclerView example with filter option in Android

Hi Guys, Maybe you all are expert in terms of using RecyclerView in android. This blog is simple example for using filter option with RecyclerView adapter. As for now you will instantiate RecyclerView and set the adapter to RecyclerView as following way. RecyclerView list = (RecyclerView) findViewById(R.id.list); list.setLayoutManager(new LinearLayoutManager(this)); list.setHasFixedSize(true); ArrayList&ltNumber&gt numbers = new ArrayList&lt&gt(); String ONEs[] = {"ZERO", "ONE", "TWO", "THREE", "FOUR", "FIVE", "SIX", "SEVEN", "EIGHT", "NINE", "TEN"}; String TENs[] = {"ZERO", "TEN", "TWENTY", "THIRTY", "FOURTY", "FIFTY", "SIXTY", "SEVENTY", "EIGHTY", "NINETY", "HUNDRED"}; String HUNDREDS[] = {"ZERO", "HUNDRED", "TWO HUND
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Simple Sliding Menu Example in Android

Consider using simple NavigationView instead of this old sliding menu , which based on Material design and much simpler and very flexible than this Navigation drawer.

This post will help you to create a simple sliding menu in Android.
Here sliding menu is a listview which is in INVISIBLE state. It will comes to VISIBLE state once you click the menu button. And it will go to INVISIBLE state again once you pick the item from listview. To change the state we are using animation, that is why it looks like sliding.

Complete code:

MainActivity.java

package com.android.slidingmenuexample;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.TextView;

public class MainActivity extends FragmentActivity {

 MainLayout mLayout;
 private ListView lvMenu;
 private String[] lvMenuItems;
 Button btMenu;
 TextView tvTitle;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  mLayout = (MainLayout) this.getLayoutInflater().inflate(
    R.layout.activity_main, null);
  setContentView(mLayout);

  lvMenuItems = getResources().getStringArray(R.array.menu_items);
  lvMenu = (ListView) findViewById(R.id.menu_listview);
  lvMenu.setAdapter(new ArrayAdapter<String>(this,
    android.R.layout.simple_list_item_1, lvMenuItems));
  lvMenu.setOnItemClickListener(new OnItemClickListener() {
   @Override
   public void onItemClick(AdapterView<?> parent, View view,
     int position, long id) {
    onMenuItemClick(parent, view, position, id);
   }

  });

  btMenu = (Button) findViewById(R.id.button_menu);
  btMenu.setOnClickListener(new OnClickListener() {
   @Override
   public void onClick(View v) {
    // Show/hide the menu
    toggleMenu(v);
   }
  });

  tvTitle = (TextView) findViewById(R.id.activity_main_content_title);

  FragmentManager fm = MainActivity.this.getSupportFragmentManager();
  FragmentTransaction ft = fm.beginTransaction();
  Layout1 fragment = new Layout1();
  ft.add(R.id.activity_main_content_fragment, fragment);
  ft.commit();

 }

 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
  getMenuInflater().inflate(R.menu.main, menu);
  return true;
 }

 public void toggleMenu(View v) {
  mLayout.toggleMenu();
 }

 private void onMenuItemClick(AdapterView<?> parent, View view,
   int position, long id) {
  String selectedItem = lvMenuItems[position];
  String currentItem = tvTitle.getText().toString();
  if (selectedItem.compareTo(currentItem) == 0) {
   mLayout.toggleMenu();
   return;
  }

  FragmentManager fm = MainActivity.this.getSupportFragmentManager();
  FragmentTransaction ft = fm.beginTransaction();
  Fragment fragment = null;

  if (selectedItem.compareTo("Layout 1") == 0) {
   fragment = new Layout1();
  } else if (selectedItem.compareTo("Layout 2") == 0) {
   fragment = new Layout2();
  }

  if (fragment != null) {
   ft.replace(R.id.activity_main_content_fragment, fragment);
   ft.commit();
   tvTitle.setText(selectedItem);
  }
  mLayout.toggleMenu();
 }

 @Override
 public void onBackPressed() {
  if (mLayout.isMenuShown()) {
   mLayout.toggleMenu();
  } else {
   super.onBackPressed();
  }
 }
}


MainLayout.java

package com.android.slidingmenuexample;

import android.content.Context;
import android.os.Handler;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.Interpolator;
import android.widget.LinearLayout;
import android.widget.Scroller;

public class MainLayout extends LinearLayout {

 private static final int SLIDING_DURATION = 500;
 private static final int QUERY_INTERVAL = 16;
 int mainLayoutWidth;
 private View menu;
 private View content;
 private static int menuRightMargin = 15;

 private enum MenuState {
  HIDING, HIDDEN, SHOWING, SHOWN,
 };

 private int contentXOffset;
 private MenuState currentMenuState = MenuState.HIDDEN;
 private Scroller menuScroller = new Scroller(this.getContext(),
   new EaseInInterpolator());
 private Runnable menuRunnable = new MenuRunnable();
 private Handler menuHandler = new Handler();
 int prevX = 0;
 boolean isDragging = false;
 int lastDiffX = 0;

 public MainLayout(Context context, AttributeSet attrs) {
  super(context, attrs);
 }

 public MainLayout(Context context) {
  super(context);
 }

 @Override
 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
  super.onMeasure(widthMeasureSpec, heightMeasureSpec);

  mainLayoutWidth = MeasureSpec.getSize(widthMeasureSpec);
  menuRightMargin = mainLayoutWidth * 10 / 100;
 }

 @Override
 protected void onAttachedToWindow() {
  super.onAttachedToWindow();

  menu = this.getChildAt(0);
  content = this.getChildAt(1);
  content.setOnTouchListener(new OnTouchListener() {
   @Override
   public boolean onTouch(View v, MotionEvent event) {
    return MainLayout.this.onContentTouch(v, event);
   }
  });
  menu.setVisibility(View.GONE);
 }

 @Override
 protected void onLayout(boolean changed, int left, int top, int right,
   int bottom) {
  if (changed) {
   LayoutParams contentLayoutParams = (LayoutParams) content
     .getLayoutParams();
   contentLayoutParams.height = this.getHeight();
   contentLayoutParams.width = this.getWidth();
   LayoutParams menuLayoutParams = (LayoutParams) menu
     .getLayoutParams();
   menuLayoutParams.height = this.getHeight();
   menuLayoutParams.width = this.getWidth() - menuRightMargin;
  }
  menu.layout(left, top, right - menuRightMargin, bottom);
  content.layout(left + contentXOffset, top, right + contentXOffset,
    bottom);

 }

 public void toggleMenu() {

  if (currentMenuState == MenuState.HIDING
    || currentMenuState == MenuState.SHOWING)
   return;

  switch (currentMenuState) {
  case HIDDEN:
   currentMenuState = MenuState.SHOWING;
   menu.setVisibility(View.VISIBLE);
   menuScroller.startScroll(0, 0, menu.getLayoutParams().width, 0,
     SLIDING_DURATION);
   break;
  case SHOWN:
   currentMenuState = MenuState.HIDING;
   menuScroller.startScroll(contentXOffset, 0, -contentXOffset, 0,
     SLIDING_DURATION);
   break;
  default:
   break;
  }
  menuHandler.postDelayed(menuRunnable, QUERY_INTERVAL);
  this.invalidate();
 }

 protected class MenuRunnable implements Runnable {
  @Override
  public void run() {
   boolean isScrolling = menuScroller.computeScrollOffset();
   adjustContentPosition(isScrolling);
  }
 }

 private void adjustContentPosition(boolean isScrolling) {
  int scrollerXOffset = menuScroller.getCurrX();

  content.offsetLeftAndRight(scrollerXOffset - contentXOffset);

  contentXOffset = scrollerXOffset;
  this.invalidate();
  if (isScrolling)
   menuHandler.postDelayed(menuRunnable, QUERY_INTERVAL);
  else
   this.onMenuSlidingComplete();
 }

 private void onMenuSlidingComplete() {
  switch (currentMenuState) {
  case SHOWING:
   currentMenuState = MenuState.SHOWN;
   break;
  case HIDING:
   currentMenuState = MenuState.HIDDEN;
   menu.setVisibility(View.GONE);
   break;
  default:
   return;
  }
 }

 protected class EaseInInterpolator implements Interpolator {
  @Override
  public float getInterpolation(float t) {
   return (float) Math.pow(t - 1, 5) + 1;
  }

 }

 public boolean isMenuShown() {
  return currentMenuState == MenuState.SHOWN;
 }

 public boolean onContentTouch(View v, MotionEvent event) {
  if (currentMenuState == MenuState.HIDING
    || currentMenuState == MenuState.SHOWING)
   return false;
  int curX = (int) event.getRawX();
  int diffX = 0;

  switch (event.getAction()) {
  case MotionEvent.ACTION_DOWN:

   prevX = curX;
   return true;

  case MotionEvent.ACTION_MOVE:
   if (!isDragging) {
    isDragging = true;
    menu.setVisibility(View.VISIBLE);
   }
   diffX = curX - prevX;
   if (contentXOffset + diffX <= 0) {
    diffX = -contentXOffset;
   } else if (contentXOffset + diffX > mainLayoutWidth
     - menuRightMargin) {
    diffX = mainLayoutWidth - menuRightMargin - contentXOffset;
   }
   content.offsetLeftAndRight(diffX);
   contentXOffset += diffX;
   this.invalidate();

   prevX = curX;
   lastDiffX = diffX;
   return true;

  case MotionEvent.ACTION_UP:
   Log.d("MainLayout.java onContentTouch()", "Up lastDiffX "
     + lastDiffX);

   if (lastDiffX > 0) {
    currentMenuState = MenuState.SHOWING;
    menuScroller.startScroll(contentXOffset, 0,
      menu.getLayoutParams().width - contentXOffset, 0,
      SLIDING_DURATION);
   } else if (lastDiffX < 0) {
    currentMenuState = MenuState.HIDING;
    menuScroller.startScroll(contentXOffset, 0, -contentXOffset, 0,
      SLIDING_DURATION);
   }
   menuHandler.postDelayed(menuRunnable, QUERY_INTERVAL);
   this.invalidate();
   isDragging = false;
   prevX = 0;
   lastDiffX = 0;
   return true;

  default:
   break;
  }

  return false;
 }
}


Layout1.java

package com.android.slidingmenuexample;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class Layout1 extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_layout1, null);
        return view;
    }
}


Layout2.java

package com.android.slidingmenuexample;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class Layout2 extends Fragment {

 @Override
 public View onCreateView(LayoutInflater inflater, ViewGroup container,
   Bundle savedInstanceState) {
  View view = inflater.inflate(R.layout.fragment_layout2, null);
  return view;
 }
}


activity_main.xml
<com.android.slidingmenuexample.MainLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    
     <LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >

        <ListView
            android:id="@+id/menu_listview"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:background="@android:color/holo_purple"
            android:cacheColorHint="#00000000" >
        </ListView>
    </LinearLayout>

    <LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >
  
        
        <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:background="@android:color/darker_gray"
         android:orientation="horizontal" >
            
            <Button
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:onClick="toggleMenu"
             android:text="Menu"
             android:id="@+id/button_menu" />
            
            <TextView
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:text="Layout 1"
        android:gravity="center"
        android:id="@+id/activity_main_content_title"
        android:layout_weight="1" />
            
        </LinearLayout>       
        
        
        <FrameLayout
      android:id="@+id/activity_main_content_fragment"
      android:layout_width="match_parent"
      android:layout_height="match_parent" >
        
     </FrameLayout>
        
    </LinearLayout>

</com.android.slidingmenuexample.MainLayout>


fragment_layout1.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/holo_blue_dark" >

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:gravity="center"
        android:text="Layout 1"
        android:textColor="@android:color/black"
        android:textSize="20sp" />

</RelativeLayout>


fragment_layout2.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/holo_green_dark"
    android:orientation="vertical" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="Layout2"
        android:textColor="@android:color/black"
        android:textSize="20sp" />

</RelativeLayout>


rec/values/menu_items.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string-array name="menu_items">
        <item >Layout 1</item>
        <item >Layout 2</item>
    </string-array>
</resources>





Simple Navigation Drawer example in android

Complete project on GITHUB

I hope this post is useful. kindly share your feedback as comment here.


Thank You



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