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Simple RecyclerView Divider

Simple Horizontal Divider Item Decoration for RecyclerView

    mRecyclerView.addItemDecoration(new SimpleDividerItemDecoration(
            getApplicationContext()
    	));

NOTE: Add item decoration prior to setting the adapter

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/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software

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// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

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import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Paint.Align;
import android.graphics.Paint.FontMetrics;
import android.graphics.Typeface;
import android.graphics.drawable.BitmapDrawable;

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/**
 * Fragment used for managing interactions for and presentation of a navigation drawer.
 * See the <a href="https://developer.android.com/design/patterns/navigation-drawer.html#Interaction">
 * design guidelines</a> for a complete explanation of the behaviors implemented here.
 */
public class NavigationDrawerFragment extends Fragment {

    /**
     * Remember the position of the selected item.
     */

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/**
 * ItemDecoration implementation that applies and inset margin
 * around each child of the RecyclerView. It also draws item dividers
 * that are expected from a vertical list implementation, such as
 * ListView.
 */
public class DividerDecoration extends RecyclerView.ItemDecoration {

    private static final int[] ATTRS = { android.R.attr.listDivider };

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/**
 * ItemDecoration implementation that applies and inset margin
 * around each child of the RecyclerView. It also draws item dividers
 * that are expected from a vertical list implementation, such as
 * ListView.
 */
public class GridDividerDecoration extends RecyclerView.ItemDecoration {

    private static final int[] ATTRS = { android.R.attr.listDivider };

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/**
 * A {@link android.support.v7.widget.RecyclerView.LayoutManager} implementation
 * that places children in a two-dimensional grid, sized to a fixed column count
 * value. User scrolling is possible in both horizontal and vertical directions
 * to view the data set.
 *
 * <p>The column count is controllable via {@link #setTotalColumnCount(int)}. The layout manager
 * will generate the number of rows necessary to accommodate the data set based on
 * the fixed column count.
 *

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public class measureSize{
   public void getSize1(){
    int w = View.MeasureSpec.makeMeasureSpec(0,
                View.MeasureSpec.UNSPECIFIED);
        int h = View.MeasureSpec.makeMeasureSpec(0,
                View.MeasureSpec.UNSPECIFIED);
        imageView.measure(w, h);
        int height = imageView.getMeasuredHeight();
        int width = imageView.getMeasuredWidth();
   }

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/*
 * Author: Felipe Herranz (felhr85@gmail.com)
 * Contributors:Francesco Verheye (verheye.francesco@gmail.com)
 * 		Israel Dominguez (dominguez.israel@gmail.com)
 */	
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;

import android.os.Handler;