mzgreen

class SizeHelper @JvmOverloads constructor(
    context: Context,
    attrs: AttributeSet? = null,
    defStyleAttr: Int = 0
) : ConstraintHelper(context, attrs, defStyleAttr) {

    private val screenHeight: Int = resources.displayMetrics.heightPixels
    private val screenWidth: Int = resources.displayMetrics.widthPixels
    
    private var layoutConstraintScreenHeightPercent = UNSPECIFIED_CONSTRAINT_SCREEN_PERCENT

mzgreen

import android.content.Context;
import android.graphics.SurfaceTexture;
import android.opengl.EGL14;
import android.opengl.EGLExt;
import android.opengl.GLDebugHelper;
import android.opengl.GLSurfaceView;
import android.os.Trace;
import android.util.AttributeSet;
import android.util.Log;
import android.view.TextureView;

mzgreen

public class ScrollingFABBehavior extends CoordinatorLayout.Behavior<FloatingActionButton> {
    private int toolbarHeight;

    public ScrollingFABBehavior(Context context, AttributeSet attrs) {
        super(context, attrs);
        this.toolbarHeight = Utils.getToolbarHeight(context);
    }

    @Override
    public boolean layoutDependsOn(CoordinatorLayout parent, FloatingActionButton fab, View dependency) {

mzgreen

public class ScrollingSwipeRefreshLayoutBehavior extends AppBarLayout.ScrollingViewBehavior {

    @Override
    public boolean layoutDependsOn(CoordinatorLayout parent, View child, View dependency) {
        return super.layoutDependsOn(parent, child, dependency) || (dependency instanceof AppBarLayout);
    }

    @Override
    public boolean onDependentViewChanged(CoordinatorLayout parent, View child, View dependency) {
        boolean returnValue = super.onDependentViewChanged(parent, child, dependency);

mzgreen

public abstract class HidingScrollListener extends RecyclerView.OnScrollListener {
  private static final int HIDE_THRESHOLD = 20;
  private int scrolledDistance = 0;
  private boolean controlsVisible = true;
  
  @Override
  public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
    super.onScrolled(recyclerView, dx, dy);
   
    if (scrolledDistance > HIDE_THRESHOLD && controlsVisible) {

mzgreen

public class MainActivity extends ActionBarActivity {
  private Toolbar mToolbar;
  private ImageButton mFabButton;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    initToolbar();
    mFabButton = (ImageButton) findViewById(R.id.fabButton);

mzgreen

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.RecyclerView 
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:id="@+id/recyclerView"
   android:layout_width="match_parent"
   android:layout_height="match_parent"/>

mzgreen

<android.support.v7.widget.Toolbar
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    android:background="?attr/colorPrimary"
    app:layout_scrollFlags="scroll|enterAlways" />

mzgreen

<android.support.v4.view.ViewPager
   android:id="@+id/viewPager"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

mzgreen

<android.support.design.widget.FloatingActionButton
   android:id="@+id/fabButton"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_gravity="end|bottom"
   android:layout_margin="@dimen/fab_margin"
   android:src="@drawable/ic_favorite_outline_white_24dp"
   app:borderWidth="0dp" />