Java Code Examples for android.view.View#setElevation()

protected static void setOriginalSharedElementState(ArrayList<View> sharedElements,
        ArrayList<SharedElementOriginalState> originalState) {
    for (int i = 0; i < originalState.size(); i++) {
        View view = sharedElements.get(i);
        SharedElementOriginalState state = originalState.get(i);
        if (view instanceof ImageView && state.mScaleType != null) {
            ImageView imageView = (ImageView) view;
            imageView.setScaleType(state.mScaleType);
            if (state.mScaleType == ImageView.ScaleType.MATRIX) {
              imageView.setImageMatrix(state.mMatrix);
            }
        }
        view.setElevation(state.mElevation);
        view.setTranslationZ(state.mTranslationZ);
        int widthSpec = View.MeasureSpec.makeMeasureSpec(state.mMeasuredWidth,
                View.MeasureSpec.EXACTLY);
        int heightSpec = View.MeasureSpec.makeMeasureSpec(state.mMeasuredHeight,
                View.MeasureSpec.EXACTLY);
        view.measure(widthSpec, heightSpec);
        view.layout(state.mLeft, state.mTop, state.mRight, state.mBottom);
    }
}
 

@Override
public void initialize(ToggleGroupDelegate groupView, Context context,
					   ColorStateList backgroundColor, float radius, float elevation, float maxElevation) {
	final RoundRectDrawable background = new RoundRectDrawable(backgroundColor, radius);
	groupView.setGroupBackground(background);

	View view = groupView.getToggleGroup();
	view.setClipToOutline(true);
	view.setElevation(elevation);
	setMaxElevation(groupView, maxElevation);
}
 

public SaturationValuePicker(Context context, AttributeSet attrs) {
    super(context, attrs);
    mColor = new Color();

    setClipChildren(false);
    setClipToPadding(false);

    DisplayMetrics metrics = context.getResources().getDisplayMetrics();
    mDensity = metrics.density;

    mSelectorRadius = SELECTOR_RADIUS_DP * mDensity;

    View v = new View(context);
    v.setLayoutParams(new LayoutParams(
            ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT
    ));

    // We want the selector to protrude as minimally as possible from the selection drawable and
    // we want to inset the gradients in the drawable so that the color under the selector's
    // midpoint always reflects the current color (thus the limits of the saturation-value
    // gradients have to be clamped at this inset. The inset value is thus the shorter side of
    // a 45 degree triangle (1 / root 2) with hypotnus equal to the radius of the selector.
    mInset = mSelectorRadius / (float) Math.sqrt(2);
    mSVDrawable = new SaturationValueDrawable(mInset);
    v.setBackground(mSVDrawable);
    addView(v);

    mSelectorParams = new LayoutParams(
            Math.round(mSelectorRadius * 2), Math.round(mSelectorRadius * 2)
    );
    mSelector = new View(context);
    mSelector.setLayoutParams(mSelectorParams);
    mSelectorDrawable = (GradientDrawable) ContextCompat.getDrawable(
            context, R.drawable.drawable_selector);
    mSelector.setBackground(mSelectorDrawable);
    mSelector.setElevation(SELECTOR_ELEVATION_DP * mDensity);
    addView(mSelector);
}
 

/**
 * Adds an arrow view pointing at the original icon.
 * @param horizontalOffset the horizontal offset of the arrow, so that it
 *                              points at the center of the original icon
 */
private View addArrowView(int horizontalOffset, int verticalOffset, int width, int height) {
    LayoutParams layoutParams = new LayoutParams(width, height);
    if (mIsLeftAligned) {
        layoutParams.gravity = Gravity.START;
        layoutParams.leftMargin = horizontalOffset;
    } else {
        layoutParams.gravity = Gravity.END;
        layoutParams.rightMargin = horizontalOffset;
    }
    if (mIsAboveIcon) {
        layoutParams.topMargin = verticalOffset;
    } else {
        layoutParams.bottomMargin = verticalOffset;
    }

    View arrowView = new View(getContext());
    if (Gravity.isVertical(((FrameLayout.LayoutParams) getLayoutParams()).gravity)) {
        // This is only true if there wasn't room for the container next to the icon,
        // so we centered it instead. In that case we don't want to show the arrow.
        arrowView.setVisibility(INVISIBLE);
    } else {
        ShapeDrawable arrowDrawable = new ShapeDrawable(TriangleShape.create(
                width, height, !mIsAboveIcon));
        Paint arrowPaint = arrowDrawable.getPaint();
        // Note that we have to use getChildAt() instead of getItemViewAt(),
        // since the latter expects the arrow which hasn't been added yet.
        PopupItemView itemAttachedToArrow = (PopupItemView)
                (getChildAt(mIsAboveIcon ? getChildCount() - 1 : 0));
        arrowPaint.setColor(itemAttachedToArrow.getArrowColor(mIsAboveIcon));
        // The corner path effect won't be reflected in the shadow, but shouldn't be noticeable.
        int radius = getResources().getDimensionPixelSize(R.dimen.popup_arrow_corner_radius);
        arrowPaint.setPathEffect(new CornerPathEffect(radius));
        arrowView.setBackground(arrowDrawable);
        arrowView.setElevation(getElevation());
    }
    addView(arrowView, mIsAboveIcon ? getChildCount() : 0, layoutParams);
    return arrowView;
}
 

/**
 * Sets the base elevation of this view, in pixels.
 */
@TargetApi(21)
public static void setElevation(View view, float elevation) {
    if (Build.VERSION.SDK_INT >= 21) {
        view.setElevation(elevation);
    }
}
 

private void bindCommonDynamicProp(int key, DynamicValue<?> value, View target) {
  switch (key) {
    case KEY_ALPHA:
      target.setAlpha(DynamicPropsManager.<Float>resolve(value));
      break;

    case KEY_TRANSLATION_X:
      target.setTranslationX(DynamicPropsManager.<Float>resolve(value));
      break;

    case KEY_TRANSLATION_Y:
      target.setTranslationY(DynamicPropsManager.<Float>resolve(value));
      break;

    case KEY_SCALE_X:
      target.setScaleX(DynamicPropsManager.<Float>resolve(value));
      break;

    case KEY_SCALE_Y:
      target.setScaleY(DynamicPropsManager.<Float>resolve(value));
      break;

    case KEY_ELEVATION:
      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        target.setElevation(DynamicPropsManager.<Float>resolve(value));
      }
      break;

    case KEY_BACKGROUND_COLOR:
      target.setBackgroundColor(DynamicPropsManager.<Integer>resolve(value));
      break;

    case KEY_ROTATION:
      target.setRotation(DynamicPropsManager.<Float>resolve(value));
      break;
  }
}
 

protected void setItemViewProperty(View itemView, float targetOffset) {
    float scale = calculateScale(targetOffset + mSpaceMain);
    itemView.setScaleX(scale);
    itemView.setScaleY(scale);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        itemView.setElevation(0);
    }
    final float rotation = calRotation(targetOffset);
    if (getOrientation() == HORIZONTAL) {
        itemView.setRotationY(rotation);
    } else {
        itemView.setRotationX(-rotation);
    }
}
 

@Override
public void onViewDragStateChanged(int state) {
    if (state == ViewDragHelper.STATE_IDLE) {
        View capturedView = dragHelper.getCapturedView();
        if (capturedView != null) {
            capturedView.setElevation(capturedView.getElevation() - 1);
        }
    }
}
 

private void setFloatingElevationVisibility(final View floatingConfirmLayout, final boolean visible) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        final float elevationInPixels =
            visible ? getBaseContext().getResources().getDimension(R.dimen.px_xxs_margin) : 0;
        floatingConfirmLayout.setElevation(elevationInPixels);
    }
}
 

/**
 * Set elevation if supported.
 */
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public static boolean setElevation(View view, float elevationValue) {
    if (!isElevationSupported()) return false;

    view.setElevation(elevationValue);
    return true;
}
 

@Override
public void onViewCaptured(@NonNull View capturedChild, int activePointerId) {
    capturedChild.setElevation(getElevation() + 1);
    capturedLeft = capturedChild.getLeft();
    capturedTop = capturedChild.getTop();
}
 

public ViewHolder(@NonNull View itemView, int itemViewType) {
    super(itemView);

    if (itemViewType == SMART_PLAYLIST) {
        if (shortSeparator != null) {
            shortSeparator.setVisibility(View.GONE);
        }
        itemView.setBackgroundColor(ATHUtil.resolveColor(activity, R.attr.cardBackgroundColor));
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            itemView.setElevation(activity.getResources().getDimensionPixelSize(R.dimen.card_elevation));
        }
    }

    if (image != null) {
        int iconPadding = activity.getResources().getDimensionPixelSize(R.dimen.list_item_image_icon_padding);
        image.setPadding(iconPadding, iconPadding, iconPadding, iconPadding);
        image.setColorFilter(ATHUtil.resolveColor(activity, R.attr.iconColor), PorterDuff.Mode.SRC_IN);
    }

    if (menu != null) {
        menu.setOnClickListener(view -> {
            final Playlist playlist = dataSet.get(getAdapterPosition());
            final PopupMenu popupMenu = new PopupMenu(activity, view);
            popupMenu.inflate(getItemViewType() == SMART_PLAYLIST ? R.menu.menu_item_smart_playlist : R.menu.menu_item_playlist);
            if (playlist instanceof LastAddedPlaylist) {
                popupMenu.getMenu().findItem(R.id.action_clear_playlist).setVisible(false);
            }
            popupMenu.setOnMenuItemClickListener(item -> {
                if (item.getItemId() == R.id.action_clear_playlist) {
                    if (playlist instanceof AbsSmartPlaylist) {
                        ClearSmartPlaylistDialog.create((AbsSmartPlaylist) playlist).show(activity.getSupportFragmentManager(), "CLEAR_SMART_PLAYLIST_" + playlist.name);
                        return true;
                    }
                }
                return PlaylistMenuHelper.handleMenuClick(
                        activity, dataSet.get(getAdapterPosition()), item);
            });
            popupMenu.show();
        });
    }
}
 

@Override
public void setRadiusAndShadow(int radius, @ILayout.HideRadiusSide int hideRadiusSide, int shadowElevation, float shadowAlpha) {
    View owner = mOwner.get();
    if (owner == null) {
        return;
    }

    mRadius = radius;
    mHideRadiusSide = hideRadiusSide;

    if (mRadius > 0) {
        if (hideRadiusSide == HIDE_RADIUS_SIDE_TOP) {
            mRadiusArray = new float[]{0, 0, 0, 0, mRadius, mRadius, mRadius, mRadius};
        } else if (hideRadiusSide == HIDE_RADIUS_SIDE_RIGHT) {
            mRadiusArray = new float[]{mRadius, mRadius, 0, 0, 0, 0, mRadius, mRadius};
        } else if (hideRadiusSide == HIDE_RADIUS_SIDE_BOTTOM) {
            mRadiusArray = new float[]{mRadius, mRadius, mRadius, mRadius, 0, 0, 0, 0};
        } else if (hideRadiusSide == HIDE_RADIUS_SIDE_LEFT) {
            mRadiusArray = new float[]{0, 0, mRadius, mRadius, mRadius, mRadius, 0, 0};
        } else {
            mRadiusArray = null;
        }
    }

    mShadowElevation = shadowElevation;
    mShadowAlpha = shadowAlpha;
    if (useFeature()) {
        if (mShadowElevation == 0 || isRadiusWithSideHidden()) {
            owner.setElevation(0);
        } else {
            owner.setElevation(mShadowElevation);
        }

        owner.setOutlineProvider(new ViewOutlineProvider() {
            @Override
            @TargetApi(21)
            public void getOutline(View view, Outline outline) {
                int w = view.getWidth(), h = view.getHeight();
                if (w == 0 || h == 0) {
                    return;
                }
                if (isRadiusWithSideHidden()) {
                    int left = 0, top = 0, right = w, bottom = h;
                    if (mHideRadiusSide == HIDE_RADIUS_SIDE_LEFT) {
                        left -= mRadius;
                    } else if (mHideRadiusSide == HIDE_RADIUS_SIDE_TOP) {
                        top -= mRadius;
                    } else if (mHideRadiusSide == HIDE_RADIUS_SIDE_RIGHT) {
                        right += mRadius;
                    } else if (mHideRadiusSide == HIDE_RADIUS_SIDE_BOTTOM) {
                        bottom += mRadius;
                    }
                    outline.setRoundRect(left, top,
                            right, bottom, mRadius);
                    return;
                }

                int top = mOutlineInsetTop, bottom = Math.max(top + 1, h - mOutlineInsetBottom),
                        left = mOutlineInsetLeft, right = w - mOutlineInsetRight;
                if (mIsOutlineExcludePadding) {
                    left += view.getPaddingLeft();
                    top += view.getPaddingTop();
                    right = Math.max(left + 1, right - view.getPaddingRight());
                    bottom = Math.max(top + 1, bottom - view.getPaddingBottom());
                }
                outline.setAlpha(mShadowAlpha);
                if (mRadius <= 0) {
                    outline.setRect(left, top,
                            right, bottom);
                } else {
                    outline.setRoundRect(left, top,
                            right, bottom, mRadius);
                }
            }
        });

        owner.setClipToOutline(mRadius > 0);

    }
    owner.invalidate();
}
 

/**
 * Show specific status UI
 * @param status status
 * @see #showLoading()
 * @see #showLoadFailed()
 * @see #showLoadSuccess()
 * @see #showEmpty()
 */
public void showLoadingStatus(int status) {
    if (curState == status || !validate()) {
        return;
    }
    curState = status;
    //first try to reuse status view
    View convertView = mStatusViews.get(status);
    if (convertView == null) {
        //secondly try to reuse current status view
        convertView = mCurStatusView;
    }
    try {
        //call customer adapter to get UI for specific status. convertView can be reused
        View view = mAdapter.getView(this, convertView, status);
        if (view == null) {
            printLog(mAdapter.getClass().getName() + ".getView returns null");
            return;
        }
        if (view != mCurStatusView || mWrapper.indexOfChild(view) < 0) {
            if (mCurStatusView != null) {
                mWrapper.removeView(mCurStatusView);
            }
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                view.setElevation(Float.MAX_VALUE);
            }
            mWrapper.addView(view);
            ViewGroup.LayoutParams lp = view.getLayoutParams();
            if (lp != null) {
                lp.width = ViewGroup.LayoutParams.MATCH_PARENT;
                lp.height = ViewGroup.LayoutParams.MATCH_PARENT;
            }
        } else if (mWrapper.indexOfChild(view) != mWrapper.getChildCount() - 1) {
            // 确保加载状态视图在前面
            view.bringToFront();
        }
        mCurStatusView = view;
        mStatusViews.put(status, view);
    } catch(Exception e) {
        if (DEBUG) {
            e.printStackTrace();
        }
    }
}
 

public static void setElevation(View view, float elevation) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
        view.setElevation(elevation);
}
 

public ViewHolder(@NonNull View itemView, int itemViewType) {
    super(itemView);
    itemView.setOnLongClickListener(null);

    if (itemViewType != HEADER) {
        itemView.setBackgroundColor(ATHUtil.resolveColor(activity, R.attr.cardBackgroundColor));
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            itemView.setElevation(activity.getResources().getDimensionPixelSize(R.dimen.card_elevation));
        }
        if (shortSeparator != null) {
            shortSeparator.setVisibility(View.GONE);
        }
    }

    if (menu != null) {
        if (itemViewType == SONG) {
            menu.setVisibility(View.VISIBLE);
            menu.setOnClickListener(new SongMenuHelper.OnClickSongMenu(activity) {
                @Override
                public Song getSong() {
                    return (Song) dataSet.get(getAdapterPosition());
                }
            });
        } else {
            menu.setVisibility(View.GONE);
        }
    }

    switch (itemViewType) {
        case ALBUM:
            setImageTransitionName(activity.getString(R.string.transition_album_art));
            break;
        case ARTIST:
            setImageTransitionName(activity.getString(R.string.transition_artist_image));
            break;
         case SONG:
            break;
        default:
            View container = itemView.findViewById(R.id.image_container);
            if (container != null) {
                container.setVisibility(View.GONE);
            }
            break;
    }
}
 

/**
 * Show specific status UI
 * @param status status
 * @see #showLoading()
 * @see #showLoadFailed()
 * @see #showLoadSuccess()
 * @see #showEmpty()
 */
public void showLoadingStatus(int status) {
    if (curState == status || !validate()) {
        return;
    }
    curState = status;
    //first try to reuse status view
    View convertView = mStatusViews.get(status);
    if (convertView == null) {
        //secondly try to reuse current status view
        convertView = mCurStatusView;
    }
    try {
        //call customer adapter to get UI for specific status. convertView can be reused
        View view = mAdapter.getView(this, convertView, status);
        if (view == null) {
            printLog(mAdapter.getClass().getName() + ".getView returns null");
            return;
        }
        if (view != mCurStatusView || mWrapper.indexOfChild(view) < 0) {
            if (mCurStatusView != null) {
                mWrapper.removeView(mCurStatusView);
            }
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                view.setElevation(Float.MAX_VALUE);
            }
            mWrapper.addView(view);
            ViewGroup.LayoutParams lp = view.getLayoutParams();
            if (lp != null) {
                lp.width = ViewGroup.LayoutParams.MATCH_PARENT;
                lp.height = ViewGroup.LayoutParams.MATCH_PARENT;
            }
        } else if (mWrapper.indexOfChild(view) != mWrapper.getChildCount() - 1) {
            // make sure loading status view at the front
            view.bringToFront();
        }
        mCurStatusView = view;
        mStatusViews.put(status, view);
    } catch(Exception e) {
        if (DEBUG) {
            e.printStackTrace();
        }
    }
}
 

public ViewHolder(@NonNull View itemView, int itemViewType) {
    super(itemView);

    if (itemViewType == SMART_PLAYLIST) {
        if (shortSeparator != null) {
            shortSeparator.setVisibility(View.GONE);
        }
        itemView.setBackgroundColor(ATHUtil.resolveColor(activity, R.attr.cardBackgroundColor));
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            itemView.setElevation(activity.getResources().getDimensionPixelSize(R.dimen.card_elevation));
        }
    }

    if (image != null) {
        int iconPadding = activity.getResources().getDimensionPixelSize(R.dimen.list_item_image_icon_padding);
        image.setPadding(iconPadding, iconPadding, iconPadding, iconPadding);
        image.setColorFilter(ATHUtil.resolveColor(activity, R.attr.iconColor), PorterDuff.Mode.SRC_IN);
    }

    if (menu != null) {
        menu.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                final Playlist playlist = dataSet.get(getAdapterPosition());
                final PopupMenu popupMenu = new PopupMenu(activity, view);
                popupMenu.inflate(getItemViewType() == SMART_PLAYLIST ? R.menu.menu_item_smart_playlist : R.menu.menu_item_playlist);
                if (playlist instanceof LastAddedPlaylist) {
                    popupMenu.getMenu().findItem(R.id.action_clear_playlist).setVisible(false);
                }
                popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
                    @Override
                    public boolean onMenuItemClick(@NonNull MenuItem item) {
                        if (item.getItemId() == R.id.action_clear_playlist) {
                            if (playlist instanceof AbsSmartPlaylist) {
                                ClearSmartPlaylistDialog.create((AbsSmartPlaylist) playlist).show(activity.getSupportFragmentManager(), "CLEAR_SMART_PLAYLIST_" + playlist.name);
                                return true;
                            }
                        }
                        return PlaylistMenuHelper.handleMenuClick(
                                activity, dataSet.get(getAdapterPosition()), item);
                    }
                });
                popupMenu.show();
            }
        });
    }
}
 

public static void setElevation(View view, float elevation){
    if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){
        view.setElevation(elevation);
    }
}
 

public HuePicker(Context context, AttributeSet attrs) {
    super(context, attrs);

    mListeners = new ArrayList<OnHueChangeListener>();

    setClipChildren(false);
    setClipToPadding(false);

    DisplayMetrics metrics = context.getResources().getDisplayMetrics();
    mDensity = metrics.density;

    mSelectorRadius = SELECTOR_RADIUS_DP * mDensity;

    // We want the selector to protrude as minimally as possible from the background drawable
    // and we want to inset the gradients in the drawable so that the color under the
    // selector's midpoint always reflects the current color (thus the limits of the background
    // gradient have to be clamped at this inset. The inset value is thus the base side of a
    // triangle extending from the midpoint of the selector placed in the desired position, a
    // hypotenuse equal to the selector radius and a height side equal to half of the height of
    // the background drawable.
    float height = BACKGROUND_HEIGHT_DP * mDensity / 2.0f;
    mInset = Math.round(
            Math.sqrt(mSelectorRadius * mSelectorRadius - height * height)
    );

    mSelectorParams = new LayoutParams(
            Math.round(mSelectorRadius * 2), Math.round(mSelectorRadius * 2)
    );

    mBackground = new View(context);
    mBackground.setBackground(new HueDrawable());
    addView(mBackground);

    mSelector = new View(getContext());
    mSelector.setLayoutParams(mSelectorParams);
    mSelectorDrawable = (GradientDrawable) ContextCompat.getDrawable(
            getContext(),
            R.drawable.drawable_selector);
    mSelector.setBackground(mSelectorDrawable);
    mSelector.setElevation(SELECTOR_ELEVATION_DP * mDensity);
    addView(mSelector);

    // Full saturation / full value color used for the selector background
    mHueColor = new Color(0xffff0000);
    updateSelectorColor();
}