Push other view up when Snackbar showing

CoordinatorLayout & Floating Action Button

• define the layout

  <!--?xml version="1.0" encoding="utf-8"?-->
  <android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
  
    <android.support.design.widget.FloatingActionButton
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_gravity="end|bottom"
      android:layout_margin="16dp"/>
  
  </android.support.design.widget.CoordinatorLayout>
  

• show Snackbar

  Snackbar.make(view, messageResId, LENGTH_SHORT)
              .show();
  

Then, this will push up the button when Snackbar is displayed.

Android Design Support Library (100 Days of Google Dev)

Not native Floating Action Button or thirty parity UI

• define the layout with TextView

<!--?xml version="1.0" encoding="utf-8"?-->
<android.support.design.widget.CoordinatorLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  android:layout_width="match_parent"
  android:layout_height="match_parent">

  <TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="end|bottom"
    android:text="Push me up please"
    android:layout_margin="16dp"
    app:layout_behavior="com.hsy.PushUpBehavior"/>

</android.support.design.widget.CoordinatorLayout>

• custom the behavior class

import android.content.Context;
import android.support.design.widget.CoordinatorLayout;
import android.support.design.widget.Snackbar;
import android.util.AttributeSet;
import android.view.View;
import android.widget.TextView;

public class PushUpBehavior extends CoordinatorLayout.Behavior<TextView> {

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

  @Override
  public boolean layoutDependsOn(CoordinatorLayout parent, TextView child, View dependency) {
    return dependency instanceof Snackbar.SnackbarLayout;
  }

  @Override
  public boolean onDependentViewChanged(CoordinatorLayout parent, TextView child, View dependency) {
    float translationY = Math.min(0, dependency.getTranslationY() - dependency.getHeight());
    child.setTranslationY(translationY);
    return true;
  }
}

Push up whole layout

• remove the constructor of PushUpBehavior class

  public class PushUpBehavior extends CoordinatorLayout.Behavior<View> {
  
    @Override
    public boolean layoutDependsOn(CoordinatorLayout parent, View child, View dependency) {
      return dependency instanceof Snackbar.SnackbarLayout;
    }
  
    @Override
    public boolean onDependentViewChanged(CoordinatorLayout parent, View child, View dependency) {
      float translationY = Math.min(0, dependency.getTranslationY() - dependency.getHeight());
      child.setTranslationY(translationY);
      return true;
    }
  }
  

• custom the ConstraintLayout with behavior

  @CoordinatorLayout.DefaultBehavior(PushUpBehavior.class)
  public class PushUpConstraintLayout extends ConstraintLayout {
  
    public PushUpConstraintLayout(Context context) {
      super(context);
    }
  
    public PushUpConstraintLayout(Context context, AttributeSet attrs) {
      super(context, attrs);
    }
  
    public PushUpConstraintLayout(Context context, AttributeSet attrs, int defStyleAttr) {
      super(context, attrs, defStyleAttr);
    }
  }
  

• define the layout

  <?xml version="1.0" encoding="utf-8"?>
  <android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
  
    <com.hsy.PushUpConstraintLayout
      android:id="@+id/linearLayout"
      android:layout_width="match_parent"
      android:layout_height="match_parent">
  
      <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="first text"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:text="first text"/>
  
      <android.support.v7.widget.RecyclerView
        android:id="@+id/txsContainer"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingLeft="10dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/text"
        android:paddingRight="10dp"/>
  
    </com.hsy.PushUpConstraintLayout>
  
  </android.support.design.widget.CoordinatorLayout>
  

This will push up whole ConstraintLayout when Snackbar showing.

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