Java ViewUtils類代碼示例

import io.plaidapp.util.ViewUtils; //導入依賴的package包/類
@OnClick(R.id.results_scrim)
protected void hideSaveConfimation() {
    if (confirmSaveContainer.getVisibility() == View.VISIBLE) {
        // contract the bubble & hide the scrim
        AnimatorSet hideConfirmation = new AnimatorSet();
        hideConfirmation.playTogether(
                ViewAnimationUtils.createCircularReveal(confirmSaveContainer,
                        confirmSaveContainer.getWidth() / 2,
                        confirmSaveContainer.getHeight() / 2,
                        confirmSaveContainer.getWidth() / 2,
                        fab.getWidth() / 2),
                ObjectAnimator.ofArgb(resultsScrim,
                        ViewUtils.BACKGROUND_COLOR,
                        Color.TRANSPARENT));
        hideConfirmation.setDuration(150L);
        hideConfirmation.setInterpolator(AnimUtils.getFastOutSlowInInterpolator
                (SearchActivity.this));
        hideConfirmation.addListener(new AnimatorListenerAdapter() {
            @Override
            public void onAnimationEnd(Animator animation) {
                confirmSaveContainer.setVisibility(View.GONE);
                resultsScrim.setVisibility(View.GONE);
                fab.setVisibility(results.getVisibility());
            }
        });
        hideConfirmation.start();
    }
}
 

import io.plaidapp.util.ViewUtils; //導入依賴的package包/類
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
    super.onSizeChanged(w, h, oldw, oldh);
    final float expandedTitleTextSize = Math.max(minTextSize,
            ViewUtils.getSingleLineTextSize(getText().toString(), getPaint(),
                    w - getPaddingStart() - getPaddingEnd(),
                    minTextSize,
                    maxTextSize, 0.5f, getResources().getDisplayMetrics()));
    setTextSize(TypedValue.COMPLEX_UNIT_PX, expandedTitleTextSize);
}
 

import io.plaidapp.util.ViewUtils; //導入依賴的package包/類
private void calculateTextPosition() {
    float targetWidth = getWidth() / PHI;
    textSize = ViewUtils.getSingleLineTextSize(text, textPaint, targetWidth, 0f, maxTextSize,
            0.5f, getResources().getDisplayMetrics());
    textPaint.setTextSize(textSize);

    // measuring text is fun :] see: https://chris.banes.me/2014/03/27/measuring-text/
    textX = (getWidth() - textPaint.measureText(text)) / 2;
    Rect textBounds = new Rect();
    textPaint.getTextBounds(text, 0, text.length(), textBounds);
    float textHeight = textBounds.height();
    textY = (getHeight() + textHeight) / 2;
}
 

import io.plaidapp.util.ViewUtils; //導入依賴的package包/類
@Override
public Animator onAppear(ViewGroup sceneRoot, View view,
                         TransitionValues startValues, TransitionValues endValues) {
    if (view == null || view.getBackground() == null) return null;
    Drawable background = view.getBackground();
    background.setAlpha(0);
    return ObjectAnimator.ofInt(background, ViewUtils.DRAWABLE_ALPHA, 0, 255);
}
 

import io.plaidapp.util.ViewUtils; //導入依賴的package包/類
private void calculateTextPosition() {
    float targetWidth = getWidth() / PHI;
    float textSize = ViewUtils.getSingleLineTextSize(
            text, textPaint, targetWidth, 0f, maxTextSize, 0.5f, getResources().getDisplayMetrics());
    textPaint.setTextSize(textSize);

    // measuring text is fun :] see: https://chris.banes.me/2014/03/27/measuring-text/
    textX = (getWidth() - textPaint.measureText(text)) / 2;
    Rect textBounds = new Rect();
    textPaint.getTextBounds(text, 0, text.length(), textBounds);
    float textHeight = textBounds.height();
    textY = (getHeight() + textHeight) / 2;
}
 

import io.plaidapp.util.ViewUtils; //導入依賴的package包/類
private void doFabExpand() {
    // translate the chrome placeholder ui so that it is centered on the FAB
    int fabCenterX = (fab.getLeft() + fab.getRight()) / 2;
    int fabCenterY = ((fab.getTop() + fab.getBottom()) / 2) - fabExpand.getTop();
    int translateX = fabCenterX - (fabExpand.getWidth() / 2);
    int translateY = fabCenterY - (fabExpand.getHeight() / 2);
    fabExpand.setTranslationX(translateX);
    fabExpand.setTranslationY(translateY);

    // then reveal the placeholder ui, starting from the center & same dimens as fab
    fabExpand.setVisibility(View.VISIBLE);
    Animator reveal = ViewAnimationUtils.createCircularReveal(
            fabExpand,
            fabExpand.getWidth() / 2,
            fabExpand.getHeight() / 2,
            fab.getWidth() / 2,
            (int) Math.hypot(fabExpand.getWidth() / 2, fabExpand.getHeight() / 2))
            .setDuration(fabExpandDuration);

    // translate the placeholder ui back into position along an arc
    GravityArcMotion arcMotion = new GravityArcMotion();
    arcMotion.setMinimumVerticalAngle(70f);
    Path motionPath = arcMotion.getPath(translateX, translateY, 0, 0);
    Animator position = ObjectAnimator.ofFloat(fabExpand, View.TRANSLATION_X, View
            .TRANSLATION_Y, motionPath)
            .setDuration(fabExpandDuration);

    // animate from the FAB colour to the placeholder background color
    Animator background = ObjectAnimator.ofArgb(fabExpand,
            ViewUtils.BACKGROUND_COLOR,
            ContextCompat.getColor(this, R.color.designer_news),
            ContextCompat.getColor(this, R.color.background_light))
            .setDuration(fabExpandDuration);

    // fade out the fab (rapidly)
    Animator fadeOutFab = ObjectAnimator.ofFloat(fab, View.ALPHA, 0f)
            .setDuration(60);

    // play 'em all together with the material interpolator
    AnimatorSet show = new AnimatorSet();
    show.setInterpolator(getFastOutSlowInInterpolator(DesignerNewsStory.this));
    show.playTogether(reveal, background, position, fadeOutFab);
    show.start();
}
 

import io.plaidapp.util.ViewUtils; //導入依賴的package包/類
@OnClick(R.id.fab)
protected void save() {
    // show the save confirmation bubble
    fab.setVisibility(View.INVISIBLE);
    confirmSaveContainer.setVisibility(View.VISIBLE);
    resultsScrim.setVisibility(View.VISIBLE);

    // expand it once it's been measured and show a scrim over the search results
    confirmSaveContainer.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver
            .OnPreDrawListener() {
        @Override
        public boolean onPreDraw() {
            // expand the confirmation
            confirmSaveContainer.getViewTreeObserver().removeOnPreDrawListener(this);
            Animator reveal = ViewAnimationUtils.createCircularReveal(confirmSaveContainer,
                    confirmSaveContainer.getWidth() / 2,
                    confirmSaveContainer.getHeight() / 2,
                    fab.getWidth() / 2,
                    confirmSaveContainer.getWidth() / 2);
            reveal.setDuration(250L);
            reveal.setInterpolator(AnimUtils.getFastOutSlowInInterpolator(SearchActivity.this));
            reveal.start();

            // show the scrim
            int centerX = (fab.getLeft() + fab.getRight()) / 2;
            int centerY = (fab.getTop() + fab.getBottom()) / 2;
            Animator revealScrim = ViewAnimationUtils.createCircularReveal(
                    resultsScrim,
                    centerX,
                    centerY,
                    0,
                    (float) Math.hypot(centerX, centerY));
            revealScrim.setDuration(400L);
            revealScrim.setInterpolator(AnimUtils.getLinearOutSlowInInterpolator(SearchActivity
                    .this));
            revealScrim.start();
            ObjectAnimator fadeInScrim = ObjectAnimator.ofArgb(resultsScrim,
                    ViewUtils.BACKGROUND_COLOR,
                    Color.TRANSPARENT,
                    ContextCompat.getColor(SearchActivity.this, R.color.scrim));
            fadeInScrim.setDuration(800L);
            fadeInScrim.setInterpolator(AnimUtils.getLinearOutSlowInInterpolator(SearchActivity
                    .this));
            fadeInScrim.start();

            // ease in the checkboxes
            saveDribbble.setAlpha(0.6f);
            saveDribbble.setTranslationY(saveDribbble.getHeight() * 0.4f);
            saveDribbble.animate()
                    .alpha(1f)
                    .translationY(0f)
                    .setDuration(200L)
                    .setInterpolator(AnimUtils.getLinearOutSlowInInterpolator(SearchActivity
                            .this));
            saveDesignerNews.setAlpha(0.6f);
            saveDesignerNews.setTranslationY(saveDesignerNews.getHeight() * 0.5f);
            saveDesignerNews.animate()
                    .alpha(1f)
                    .translationY(0f)
                    .setDuration(200L)
                    .setInterpolator(AnimUtils.getLinearOutSlowInInterpolator(SearchActivity
                            .this));
            return false;
        }
    });
}
 

import io.plaidapp.util.ViewUtils; //導入依賴的package包/類
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_dribbble_player);
    ButterKnife.bind(this);
    circleTransform = new CircleTransform(this);
    chromeFader = new ElasticDragDismissFrameLayout.SystemChromeFader(this);

    final Intent intent = getIntent();
    if (intent.hasExtra(EXTRA_PLAYER)) {
        player = intent.getParcelableExtra(EXTRA_PLAYER);
        bindPlayer();
    } else if (intent.hasExtra(EXTRA_PLAYER_NAME)) {
        String name = intent.getStringExtra(EXTRA_PLAYER_NAME);
        playerName.setText(name);
        if (intent.hasExtra(EXTRA_PLAYER_ID)) {
            long userId = intent.getLongExtra(EXTRA_PLAYER_ID, 0l);
            loadPlayer(userId);
        } else if (intent.hasExtra(EXTRA_PLAYER_USERNAME)) {
            String username = intent.getStringExtra(EXTRA_PLAYER_USERNAME);
            loadPlayer(username);
        }
    } else if (intent.getData() != null) {
        // todo support url intents
    }

    // setup immersive mode i.e. draw behind the system chrome & adjust insets
    draggableFrame.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE
            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
    draggableFrame.setOnApplyWindowInsetsListener(new View.OnApplyWindowInsetsListener() {
        @Override
        public WindowInsets onApplyWindowInsets(View v, WindowInsets insets) {
            ((ViewGroup.MarginLayoutParams) draggableFrame.getLayoutParams()).rightMargin
                    += insets.getSystemWindowInsetRight(); // landscape
            ((ViewGroup.MarginLayoutParams) avatar.getLayoutParams()).topMargin
                += insets.getSystemWindowInsetTop();
            ViewUtils.setPaddingTop(playerDescription, insets.getSystemWindowInsetTop());
            ViewUtils.setPaddingBottom(shots, insets.getSystemWindowInsetBottom());
            // clear this listener so insets aren't re-applied
            draggableFrame.setOnApplyWindowInsetsListener(null);
            return insets;
        }
    });
}
 

import io.plaidapp.util.ViewUtils; //導入依賴的package包/類
private void recalculate(int width) {

        // reset stateful objects that might change over measure passes
        paint.setTextSize(collapsedTextSize);
        displayText = new SpannableStringBuilder(title);

        // Calculate line height; ensure it' a multiple of 4dp to sit on the grid
        final float fourDip = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 4,
                getResources().getDisplayMetrics());
        Paint.FontMetricsInt fm = paint.getFontMetricsInt();
        int fontHeight = Math.abs(fm.ascent - fm.descent) + fm.leading;
        final int baselineAlignedLineHeight =
                (int) (fourDip * (float) Math.ceil(lineHeightHint / fourDip));
        final int lineSpacingAdd = baselineAlignedLineHeight - fontHeight;

        // now create the layout with our desired insets & line height
        createLayout(width, lineSpacingAdd);

        // adjust the displayText top inset to vertically center text with the toolbar
        collapsedHeight = (int) Math.max(ViewUtils.getActionBarSize(getContext()),
                (fourDip + baselineAlignedLineHeight + fourDip));
        titleInsetTop = (collapsedHeight - baselineAlignedLineHeight) / 2f;

        if (lineCount == 1) { // single line mode
            layout = null;
            collapsingText = new CollapsingTextHelper(this);
            collapsingText.setText(title);

            collapsingText.setCollapsedBounds(titleInsetStart,
                    0,
                    width - titleInsetEnd,
                    (int) collapsedHeight);

            collapsingText.setExpandedBounds(titleInsetStart,
                    (int) titleInsetTop,
                    width - titleInsetEnd,
                    getMinimumHeight() - titleInsetBottom);
            collapsingText.setCollapsedTextColor(paint.getColor());
            collapsingText.setExpandedTextColor(paint.getColor());
            collapsingText.setCollapsedTextSize(collapsedTextSize);

            int expandedTitleTextSize = (int) Math.max(collapsedTextSize,
                    ViewUtils.getSingleLineTextSize(displayText.toString(), paint,
                            width - titleInsetStart - titleInsetEnd,
                            collapsedTextSize,
                            maxExpandedTextSize, 0.5f, getResources().getDisplayMetrics()));
            collapsingText.setExpandedTextSize(expandedTitleTextSize);

            collapsingText.setExpandedTextGravity(GravityCompat.START | Gravity.BOTTOM);
            collapsingText.setCollapsedTextGravity(GravityCompat.START | Gravity.CENTER_VERTICAL);
            collapsingText.setTypeface(paint.getTypeface());

            fm = paint.getFontMetricsInt();
            fontHeight = Math.abs(fm.ascent - fm.descent) + fm.leading;
            textTop = getHeight() - titleInsetBottom - fontHeight;
            scrollRange = getMinimumHeight() - (int) collapsedHeight;
        } else { // multi-line mode
            // bottom align the text
            textTop = getDesiredHeight() - titleInsetBottom - layout.getHeight();

            // pre-calculate at what scroll offsets lines should disappear
            scrollRange = (int) (textTop - titleInsetTop);
            final int fadeDistance = lineSpacingAdd + fm.descent; // line bottom to baseline
            lines = new Line[lineCount];
            for (int i = 1; i < lineCount; i++) {
                int lineBottomScrollOffset =
                        scrollRange + ((lineCount - i - 1) * baselineAlignedLineHeight);
                lines[i] = new Line(
                        layout.getLineStart(i),
                        layout.getLineEnd(i),
                        new ForegroundColorSpan(paint.getColor()),
                        lineBottomScrollOffset,
                        lineBottomScrollOffset + fadeDistance);
            }
        }
        calculatedWithWidth = width;
    }
 

import io.plaidapp.util.ViewUtils; //導入依賴的package包/類
public SystemChromeFader(Activity activity) {
    this.activity = activity;
    statusBarAlpha = Color.alpha(activity.getWindow().getStatusBarColor());
    navBarAlpha = Color.alpha(activity.getWindow().getNavigationBarColor());
    fadeNavBar = ViewUtils.isNavBarOnBottom(activity);
}
 

import io.plaidapp.util.ViewUtils; //導入依賴的package包/類
public CircularImageView(Context context, AttributeSet attrs) {
    super(context, attrs);
    setOutlineProvider(ViewUtils.CIRCULAR_OUTLINE);
    setClipToOutline(true);
}
 

import io.plaidapp.util.ViewUtils; //導入依賴的package包/類
@Override
public void onGenerated(Palette palette) {
    ((BadgedFourThreeImageView) getView()).setForeground(
            ViewUtils.createRipple(palette, 0.25f, 0.5f,
                    ContextCompat.getColor(getView().getContext(), R.color.mid_grey), true));
}
 

import io.plaidapp.util.ViewUtils; //導入依賴的package包/類
@Override
public Animator onDisappear(ViewGroup sceneRoot, View view,
                            TransitionValues startValues, TransitionValues endValues) {
    if (view == null || view.getBackground() == null) return null;
    return ObjectAnimator.ofInt(view.getBackground(), ViewUtils.DRAWABLE_ALPHA, 0);
}
 

import io.plaidapp.util.ViewUtils; //導入依賴的package包/類
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_dribbble_player);
    ButterKnife.bind(this);
    circleTransform = new CircleTransform(this);
    chromeFader = new ElasticDragDismissFrameLayout.SystemChromeFader(this);

    final Intent intent = getIntent();
    if (intent.hasExtra(EXTRA_PLAYER)) {
        player = intent.getParcelableExtra(EXTRA_PLAYER);
        bindPlayer();
    } else if (intent.hasExtra(EXTRA_PLAYER_NAME)) {
        String name = intent.getStringExtra(EXTRA_PLAYER_NAME);
        playerName.setText(name);
        if (intent.hasExtra(EXTRA_PLAYER_ID)) {
            long userId = intent.getLongExtra(EXTRA_PLAYER_ID, 0L);
            loadPlayer(userId);
        } else if (intent.hasExtra(EXTRA_PLAYER_USERNAME)) {
            String username = intent.getStringExtra(EXTRA_PLAYER_USERNAME);
            loadPlayer(username);
        }
    } else if (intent.getData() != null) {
        // todo support url intents
    }

    // setup immersive mode i.e. draw behind the system chrome & adjust insets
    draggableFrame.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE
            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
    draggableFrame.setOnApplyWindowInsetsListener(new View.OnApplyWindowInsetsListener() {
        @Override
        public WindowInsets onApplyWindowInsets(View v, WindowInsets insets) {
            final ViewGroup.MarginLayoutParams lpFrame = (ViewGroup.MarginLayoutParams)
                    draggableFrame.getLayoutParams();
            lpFrame.leftMargin += insets.getSystemWindowInsetLeft();    // landscape
            lpFrame.rightMargin += insets.getSystemWindowInsetRight();  // landscape
            ((ViewGroup.MarginLayoutParams) avatar.getLayoutParams()).topMargin
                += insets.getSystemWindowInsetTop();
            ViewUtils.setPaddingTop(container, insets.getSystemWindowInsetTop());
            ViewUtils.setPaddingBottom(shots, insets.getSystemWindowInsetBottom());
            // clear this listener so insets aren't re-applied
            draggableFrame.setOnApplyWindowInsetsListener(null);
            return insets;
        }
    });
    setExitSharedElementCallback(FeedAdapter.createSharedElementReenterCallback(this));
}
 

import io.plaidapp.util.ViewUtils; //導入依賴的package包/類
private void recalculate(int width) {

        // reset stateful objects that might change over measure passes
        paint.setTextSize(collapsedTextSize);
        displayText = new SpannableStringBuilder(title);

        // Calculate line height; ensure it' a multiple of 4dp to sit on the grid
        final float fourDip = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 4,
                getResources().getDisplayMetrics());
        Paint.FontMetricsInt fm = paint.getFontMetricsInt();
        int fontHeight = Math.abs(fm.ascent - fm.descent) + fm.leading;
        final int baselineAlignedLineHeight =
                (int) (fourDip * (float) Math.ceil(lineHeightHint / fourDip));
        lineSpacingAdd = Math.max(0, baselineAlignedLineHeight - fontHeight);

        // now create the layout with our desired insets & line height
        createLayout(width, lineSpacingAdd);

        // adjust the title top inset to vertically center text with the toolbar
        collapsedHeight = (int) Math.max(ViewUtils.getActionBarSize(getContext()),
                (fourDip + baselineAlignedLineHeight + fourDip));
        titleInsetTop = (collapsedHeight - baselineAlignedLineHeight) / 2f;

        if (lineCount == 1) { // single line mode
            layout = null;
            collapsingText = new CollapsingTextHelper(this);
            collapsingText.setText(title);

            collapsingText.setCollapsedBounds(titleInsetStart,
                    0,
                    width - titleInsetEnd,
                    (int) collapsedHeight);

            collapsingText.setExpandedBounds(titleInsetStart,
                    (int) titleInsetTop,
                    width - titleInsetEnd,
                    getMinimumHeight() - titleInsetBottom);
            collapsingText.setCollapsedTextColor(paint.getColor());
            collapsingText.setExpandedTextColor(paint.getColor());
            collapsingText.setCollapsedTextSize(collapsedTextSize);

            int expandedTitleTextSize = (int) Math.max(collapsedTextSize,
                    ViewUtils.getSingleLineTextSize(displayText.toString(), paint,
                            width - titleInsetStart - titleInsetEnd,
                            collapsedTextSize,
                            maxExpandedTextSize, 0.5f, getResources().getDisplayMetrics()));
            collapsingText.setExpandedTextSize(expandedTitleTextSize);

            collapsingText.setExpandedTextGravity(GravityCompat.START | Gravity.BOTTOM);
            collapsingText.setCollapsedTextGravity(GravityCompat.START | Gravity.CENTER_VERTICAL);
            collapsingText.setTypeface(paint.getTypeface());

            textTop = getHeight() - titleInsetBottom - fontHeight;
            scrollRange = getMinimumHeight() - (int) collapsedHeight;
        } else { // multi-line mode
            // bottom align the text
            textTop = getDesiredHeight() - titleInsetBottom - layout.getHeight();

            // pre-calculate at what scroll offsets lines should disappear
            scrollRange = (int) (textTop - titleInsetTop);
            final int fadeDistance = layout.getLineBottom(0) - layout.getLineBaseline(0);
            lines = new Line[lineCount];
            for (int i = 1; i < lineCount; i++) {
                int lineBottomScrollOffset =
                        scrollRange + ((lineCount - i - 1) * baselineAlignedLineHeight);
                lines[i] = new Line(
                        layout.getLineStart(i),
                        layout.getLineEnd(i),
                        new TextColorSpan(paint.getColor()),
                        lineBottomScrollOffset,
                        lineBottomScrollOffset + fadeDistance);
            }
        }
        calculatedWithWidth = width;
    }