Android uses CoordinatorLayout to implement the bottom pop up menu

This article example for everyone to share the use of CoordinatorLayout to achieve the bottom of the pop-up menu specific code, for your reference, the specific content is as follows

Step 1: Add dependencies:

compile "com.android.support:design:${project.properties.get("support")}"

Step 2: Layout references:

<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"
  android:background="#04827c">

  <RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    // Page layout 
    </RelativeLayout>

  <include // Introducing menu layout 
    android:id="@+id/au_bottom_sheet"
    layout="@layout/view_audio_list"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:focusable="true"
    app:behavior_hideable="true"
    app:behavior_peekHeight="0dp"
    app:layout_behavior="@string/bottom_sheet_behavior" />
</android.support.design.widget.CoordinatorLayout>

Step 3: Use:

// Find BottomSheetBehavior
BottomSheetBehavior behavior = BottomSheetBehavior.from(findViewById(R.id.au_bottom_sheet));

// Set ejection height 
 behavior.setPeekHeight(WindowHeight / 2);
 // Default hide 
 behavior.setState(BottomSheetBehavior.STATE_HIDDEN);
 // Add disappearing monitor 
 behavior.setBottomSheetCallback(bottomSheetCallback);

Add menu disappearing monitor:

 // Status monitoring, whether it disappears through this monitoring menu 
  private BottomSheetBehavior.BottomSheetCallback bottomSheetCallback = new BottomSheetBehavior.BottomSheetCallback() {
    @Override
    public void onStateChanged(@NonNull View bottomSheet, int newState) {
      if (newState == BottomSheetBehavior.STATE_HIDDEN) {
        if (!isBehaviorShowing(behavior)) {
          // The menu has disappeared 
        }
      }

    }

    @Override
    public void onSlide(@NonNull View bottomSheet, float slideOffset) {
    // Sliding monitoring 
    }
  };

Determine whether it is visible:

 private Boolean isBehaviorShowing(BottomSheetBehavior behavior) {
    return behavior.getState() == BottomSheetBehavior.STATE_COLLAPSED
        || behavior.getState() == BottomSheetBehavior.STATE_EXPANDED
        || behavior.getState() == BottomSheetBehavior.STATE_SETTLING;
  }

Recall menu:

behavior.setState(BottomSheetBehavior.STATE_HIDDEN);

Popup menu:

 behavior.setState(BottomSheetBehavior.STATE_COLLAPSED);