Android原生实现控件圆角方案（API28及以上）

2023-10-09 22:45
文章标签 实现 android 控件 圆角 以上 方案 原生 api28

本文主要是介绍Android原生实现控件圆角方案（API28及以上），希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

Android控件的圆角效果的实现方式有很多种，这里介绍一下另一种Android原生的圆角实现方案（API28及以上）。

我们利用ShapeAppearanceModel、MaterialShapeDrawable来实现一个圆角/切角的Button。

实现效果如下图
在这里插入图片描述
我们在为控件添加阴影的基础上实现为控件添加shape的功能.

属性

增加自定义属性:

        <attr name="carbon_cornerRadiusTopStart" /><attr name="carbon_cornerRadiusTopEnd" /><attr name="carbon_cornerRadiusBottomStart" /><attr name="carbon_cornerRadiusBottomEnd" /><attr name="carbon_cornerRadius" /><attr name="carbon_cornerCutTopStart" /><attr name="carbon_cornerCutTopEnd" /><attr name="carbon_cornerCutBottomStart" /><attr name="carbon_cornerCutBottomEnd" /><attr name="carbon_cornerCut" />

创建ShapeModelView接口

创建通用的shape接口

public interface ShapeModelView {void setShapeModel(ShapeAppearanceModel shapeModel);ShapeAppearanceModel getShapeModel();void setCornerCut(float cornerCut);void setCornerRadius(float cornerRadius);
}

为ShapeButton 实现ShapeModeView接口:

public class ShapeButton extends AppCompatButton implements ShadowView, ShapeModelView {
//.....private static int[] elevationIds = new int[]{R.styleable.shape_button_carbon_elevation,R.styleable.shape_button_carbon_elevationShadowColor,R.styleable.shape_button_carbon_elevationAmbientShadowColor,R.styleable.shape_button_carbon_elevationSpotShadowColor};private static int[] cornerCutRadiusIds = new int[]{R.styleable.shape_button_carbon_cornerRadiusTopStart,R.styleable.shape_button_carbon_cornerRadiusTopEnd,R.styleable.shape_button_carbon_cornerRadiusBottomStart,R.styleable.shape_button_carbon_cornerRadiusBottomEnd,R.styleable.shape_button_carbon_cornerRadius,R.styleable.shape_button_carbon_cornerCutTopStart,R.styleable.shape_button_carbon_cornerCutTopEnd,R.styleable.shape_button_carbon_cornerCutBottomStart,R.styleable.shape_button_carbon_cornerCutBottomEnd,R.styleable.shape_button_carbon_cornerCut};private void initButton(AttributeSet attrs, @AttrRes int defStyleAttr, @StyleRes int defStyleRes) {TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.shape_button, defStyleAttr, defStyleRes);// 初始化阴影相关属性Carbon.initElevation(this, a, elevationIds);// 初始化圆角相关属性Carbon.initCornerCutRadius(this,a,cornerCutRadiusIds);a.recycle();}// -------------------------------// shadow// -------------------------------.....// -------------------------------// shape// -------------------------------private ShapeAppearanceModel shapeModel = new ShapeAppearanceModel();private MaterialShapeDrawable shadowDrawable = new MaterialShapeDrawable(shapeModel);@Overridepublic void setShapeModel(ShapeAppearanceModel shapeModel) {this.shapeModel = shapeModel;shadowDrawable = new MaterialShapeDrawable(shapeModel);if (getWidth() > 0 && getHeight() > 0)updateCorners();if (!Carbon.IS_LOLLIPOP_OR_HIGHER)postInvalidate();}// View的轮廓形状private RectF boundsRect = new RectF();// View的轮廓形状形成的Path路径private Path cornersMask = new Path();/*** 更新圆角*/private void updateCorners() {if (Carbon.IS_LOLLIPOP_OR_HIGHER) {// 如果不是矩形,裁剪View的轮廓if (!Carbon.isShapeRect(shapeModel, boundsRect)){setClipToOutline(true);}//该方法返回一个Outline对象，它描述了该视图的形状。setOutlineProvider(new ViewOutlineProvider() {@Overridepublic void getOutline(View view, Outline outline) {if (Carbon.isShapeRect(shapeModel, boundsRect)) {outline.setRect(0, 0, getWidth(), getHeight());} else {shadowDrawable.setBounds(0, 0, getWidth(), getHeight());shadowDrawable.setShadowCompatibilityMode(MaterialShapeDrawable.SHADOW_COMPAT_MODE_NEVER);shadowDrawable.getOutline(outline);}}});}// 拿到圆角矩形的形状boundsRect.set(shadowDrawable.getBounds());// 拿到圆角矩形的PathshadowDrawable.getPathForSize(getWidth(), getHeight(), cornersMask);}@Overridepublic ShapeAppearanceModel getShapeModel() {return this.shapeModel;}@Overridepublic void setCornerCut(float cornerCut) {shapeModel = ShapeAppearanceModel.builder().setAllCorners(new CutCornerTreatment(cornerCut)).build();setShapeModel(shapeModel);}@Overridepublic void setCornerRadius(float cornerRadius) {shapeModel = ShapeAppearanceModel.builder().setAllCorners(new RoundedCornerTreatment(cornerRadius)).build();setShapeModel(shapeModel);}@Overrideprotected void onLayout(boolean changed, int left, int top, int right, int bottom) {super.onLayout(changed, left, top, right, bottom);if (!changed)return;if (getWidth() == 0 || getHeight() == 0)return;updateCorners();}}

绘制轮廓

@Overridepublic void draw(Canvas canvas) {boolean c = !Carbon.isShapeRect(shapeModel, boundsRect);if (Carbon.IS_PIE_OR_HIGHER) {if (spotShadowColor != null)super.setOutlineSpotShadowColor(spotShadowColor.getColorForState(getDrawableState(), spotShadowColor.getDefaultColor()));if (ambientShadowColor != null)super.setOutlineAmbientShadowColor(ambientShadowColor.getColorForState(getDrawableState(), ambientShadowColor.getDefaultColor()));}// 判断如果不是圆角矩形,需要使用轮廓Path,重新绘制一下Path,不然显示会很奇怪if (getWidth() > 0 && getHeight() > 0 && ((c && !Carbon.IS_LOLLIPOP_OR_HIGHER) || !shapeModel.isRoundRect(boundsRect))) {int saveCount = canvas.saveLayer(0, 0, getWidth(), getHeight(), null, Canvas.ALL_SAVE_FLAG);super.draw(canvas);paint.setXfermode(Carbon.CLEAR_MODE);if (c) {cornersMask.setFillType(Path.FillType.INVERSE_WINDING);canvas.drawPath(cornersMask, paint);}canvas.restoreToCount(saveCount);paint.setXfermode(null);}else{super.draw(canvas);}}

在Carbon中添加方法:

public static void initCornerCutRadius(ShapeModelView shapeModelView, TypedArray a, int[] ids) {int carbon_cornerRadiusTopStart = ids[0];int carbon_cornerRadiusTopEnd = ids[1];int carbon_cornerRadiusBottomStart = ids[2];int carbon_cornerRadiusBottomEnd = ids[3];int carbon_cornerRadius = ids[4];int carbon_cornerCutTopStart = ids[5];int carbon_cornerCutTopEnd = ids[6];int carbon_cornerCutBottomStart = ids[7];int carbon_cornerCutBottomEnd = ids[8];int carbon_cornerCut = ids[9];float cornerRadius = Math.max(a.getDimension(carbon_cornerRadius, 0), 0.1f);float cornerRadiusTopStart = a.getDimension(carbon_cornerRadiusTopStart, cornerRadius);float cornerRadiusTopEnd = a.getDimension(carbon_cornerRadiusTopEnd, cornerRadius);float cornerRadiusBottomStart = a.getDimension(carbon_cornerRadiusBottomStart, cornerRadius);float cornerRadiusBottomEnd = a.getDimension(carbon_cornerRadiusBottomEnd, cornerRadius);float cornerCut = a.getDimension(carbon_cornerCut, 0);float cornerCutTopStart = a.getDimension(carbon_cornerCutTopStart, cornerCut);float cornerCutTopEnd = a.getDimension(carbon_cornerCutTopEnd, cornerCut);float cornerCutBottomStart = a.getDimension(carbon_cornerCutBottomStart, cornerCut);float cornerCutBottomEnd = a.getDimension(carbon_cornerCutBottomEnd, cornerCut);ShapeAppearanceModel model = ShapeAppearanceModel.builder().setTopLeftCorner(cornerCutTopStart >= cornerRadiusTopStart ? new CutCornerTreatment(cornerCutTopStart) : new RoundedCornerTreatment(cornerRadiusTopStart)).setTopRightCorner(cornerCutTopEnd >= cornerRadiusTopEnd ? new CutCornerTreatment(cornerCutTopEnd) : new RoundedCornerTreatment(cornerRadiusTopEnd)).setBottomLeftCorner(cornerCutBottomStart >= cornerRadiusBottomStart ? new CutCornerTreatment(cornerCutBottomStart) : new RoundedCornerTreatment(cornerRadiusBottomStart)).setBottomRightCorner(cornerCutBottomEnd >= cornerRadiusBottomEnd ? new CutCornerTreatment(cornerCutBottomEnd) : new RoundedCornerTreatment(cornerRadiusBottomEnd)).build();shapeModelView.setShapeModel(model);}public static boolean isShapeRect(ShapeAppearanceModel model, RectF bounds) {return model.getTopLeftCornerSize().getCornerSize(bounds) <= 0.2f &&model.getTopRightCornerSize().getCornerSize(bounds) <= 0.2f &&model.getBottomLeftCornerSize().getCornerSize(bounds) <= 0.2f &&model.getBottomRightCornerSize().getCornerSize(bounds) <= 0.2f;}

使用

        <com.chinatsp.demo1.shadow.ShapeButtonandroid:id="@+id/show_dialog_btn"android:layout_width="56dp"android:layout_height="56dp"android:layout_margin="@dimen/carbon_padding"android:background="#ffffff"android:stateListAnimator="@null"android:text="TOM"app:carbon_cornerRadius="10dp"android:elevation="2dp"app:carbon_elevationShadowColor="@color/carbon_red_700" /><com.chinatsp.demo1.shadow.ShapeButtonandroid:id="@+id/show_date_dialog_btn"android:layout_width="56dp"android:layout_height="56dp"android:layout_margin="@dimen/carbon_padding"android:background="#ffffff"android:stateListAnimator="@null"android:text="TOM"app:carbon_cornerCut="10dp"android:elevation="10dp"app:carbon_elevationShadowColor="@color/carbon_grey_700" />

完整代码:


public class ShapeButton extends AppCompatButton implements ShadowView, ShapeModelView {public ShapeButton(@NonNull Context context) {super(context);initButton(null, android.R.attr.buttonStyle, R.style.carbon_Button);}public ShapeButton(@NonNull Context context, @Nullable AttributeSet attrs) {super(context, attrs);initButton(attrs, android.R.attr.buttonStyle, R.style.carbon_Button);}public ShapeButton(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);initButton(attrs, defStyleAttr, R.style.carbon_Button);}public ShapeButton(Context context, String text, OnClickListener listener) {super(context);initButton(null, android.R.attr.buttonStyle, R.style.carbon_Button);setText(text);setOnClickListener(listener);}private static int[] elevationIds = new int[]{R.styleable.shape_button_carbon_elevation,R.styleable.shape_button_carbon_elevationShadowColor,R.styleable.shape_button_carbon_elevationAmbientShadowColor,R.styleable.shape_button_carbon_elevationSpotShadowColor};private static int[] cornerCutRadiusIds = new int[]{R.styleable.shape_button_carbon_cornerRadiusTopStart,R.styleable.shape_button_carbon_cornerRadiusTopEnd,R.styleable.shape_button_carbon_cornerRadiusBottomStart,R.styleable.shape_button_carbon_cornerRadiusBottomEnd,R.styleable.shape_button_carbon_cornerRadius,R.styleable.shape_button_carbon_cornerCutTopStart,R.styleable.shape_button_carbon_cornerCutTopEnd,R.styleable.shape_button_carbon_cornerCutBottomStart,R.styleable.shape_button_carbon_cornerCutBottomEnd,R.styleable.shape_button_carbon_cornerCut};protected TextPaint paint = new TextPaint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);private void initButton(AttributeSet attrs, @AttrRes int defStyleAttr, @StyleRes int defStyleRes) {TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.shape_button, defStyleAttr, defStyleRes);Carbon.initElevation(this, a, elevationIds);Carbon.initCornerCutRadius(this,a,cornerCutRadiusIds);a.recycle();}// -------------------------------// shadow// -------------------------------private float elevation = 0;private float translationZ = 0;private ColorStateList ambientShadowColor, spotShadowColor;@Overridepublic float getElevation() {return elevation;}@Overridepublic void setElevation(float elevation) {if (Carbon.IS_PIE_OR_HIGHER) {super.setElevation(elevation);super.setTranslationZ(translationZ);} else if (Carbon.IS_LOLLIPOP_OR_HIGHER) {if (ambientShadowColor == null || spotShadowColor == null) {super.setElevation(elevation);super.setTranslationZ(translationZ);} else {super.setElevation(0);super.setTranslationZ(0);}} else if (elevation != this.elevation && getParent() != null) {((View) getParent()).postInvalidate();}this.elevation = elevation;}@Overridepublic float getTranslationZ() {return translationZ;}public void setTranslationZ(float translationZ) {if (translationZ == this.translationZ)return;if (Carbon.IS_PIE_OR_HIGHER) {super.setTranslationZ(translationZ);} else if (Carbon.IS_LOLLIPOP_OR_HIGHER) {if (ambientShadowColor == null || spotShadowColor == null) {super.setTranslationZ(translationZ);} else {super.setTranslationZ(0);}} else if (translationZ != this.translationZ && getParent() != null) {((View) getParent()).postInvalidate();}this.translationZ = translationZ;}@Overridepublic ColorStateList getElevationShadowColor() {return ambientShadowColor;}@Overridepublic void setElevationShadowColor(ColorStateList shadowColor) {ambientShadowColor = spotShadowColor = shadowColor;setElevation(elevation);setTranslationZ(translationZ);}@Overridepublic void setElevationShadowColor(int color) {ambientShadowColor = spotShadowColor = ColorStateList.valueOf(color);setElevation(elevation);setTranslationZ(translationZ);}@Overridepublic void setOutlineAmbientShadowColor(ColorStateList color) {ambientShadowColor = color;if (Carbon.IS_PIE_OR_HIGHER) {super.setOutlineAmbientShadowColor(color.getColorForState(getDrawableState(), color.getDefaultColor()));} else {setElevation(elevation);setTranslationZ(translationZ);}}@Overridepublic void setOutlineAmbientShadowColor(int color) {setOutlineAmbientShadowColor(ColorStateList.valueOf(color));}@Overridepublic int getOutlineAmbientShadowColor() {return ambientShadowColor.getDefaultColor();}@Overridepublic void setOutlineSpotShadowColor(int color) {setOutlineSpotShadowColor(ColorStateList.valueOf(color));}@Overridepublic void setOutlineSpotShadowColor(ColorStateList color) {spotShadowColor = color;if (Carbon.IS_PIE_OR_HIGHER) {super.setOutlineSpotShadowColor(color.getColorForState(getDrawableState(), color.getDefaultColor()));} else {setElevation(elevation);setTranslationZ(translationZ);}}@Overridepublic int getOutlineSpotShadowColor() {return ambientShadowColor.getDefaultColor();}@Overridepublic void draw(Canvas canvas) {boolean c = !Carbon.isShapeRect(shapeModel, boundsRect);if (Carbon.IS_PIE_OR_HIGHER) {if (spotShadowColor != null)super.setOutlineSpotShadowColor(spotShadowColor.getColorForState(getDrawableState(), spotShadowColor.getDefaultColor()));if (ambientShadowColor != null)super.setOutlineAmbientShadowColor(ambientShadowColor.getColorForState(getDrawableState(), ambientShadowColor.getDefaultColor()));}// 判断如果不是圆角矩形,需要使用轮廓Path,绘制一下Path,不然显示会很奇怪if (getWidth() > 0 && getHeight() > 0 && ((c && !Carbon.IS_LOLLIPOP_OR_HIGHER) || !shapeModel.isRoundRect(boundsRect))) {int saveCount = canvas.saveLayer(0, 0, getWidth(), getHeight(), null, Canvas.ALL_SAVE_FLAG);super.draw(canvas);paint.setXfermode(Carbon.CLEAR_MODE);if (c) {cornersMask.setFillType(Path.FillType.INVERSE_WINDING);canvas.drawPath(cornersMask, paint);}canvas.restoreToCount(saveCount);paint.setXfermode(null);}else{super.draw(canvas);}}// -------------------------------// shape// -------------------------------private ShapeAppearanceModel shapeModel = new ShapeAppearanceModel();private MaterialShapeDrawable shadowDrawable = new MaterialShapeDrawable(shapeModel);@Overridepublic void setShapeModel(ShapeAppearanceModel shapeModel) {this.shapeModel = shapeModel;shadowDrawable = new MaterialShapeDrawable(shapeModel);if (getWidth() > 0 && getHeight() > 0)updateCorners();if (!Carbon.IS_LOLLIPOP_OR_HIGHER)postInvalidate();}// View的轮廓形状private RectF boundsRect = new RectF();// View的轮廓形状形成的Path路径private Path cornersMask = new Path();/*** 更新圆角*/private void updateCorners() {if (Carbon.IS_LOLLIPOP_OR_HIGHER) {// 如果不是矩形,裁剪View的轮廓if (!Carbon.isShapeRect(shapeModel, boundsRect)){setClipToOutline(true);}//该方法返回一个Outline对象，它描述了该视图的形状。setOutlineProvider(new ViewOutlineProvider() {@Overridepublic void getOutline(View view, Outline outline) {if (Carbon.isShapeRect(shapeModel, boundsRect)) {outline.setRect(0, 0, getWidth(), getHeight());} else {shadowDrawable.setBounds(0, 0, getWidth(), getHeight());shadowDrawable.setShadowCompatibilityMode(MaterialShapeDrawable.SHADOW_COMPAT_MODE_NEVER);shadowDrawable.getOutline(outline);}}});}// 拿到圆角矩形的形状boundsRect.set(shadowDrawable.getBounds());// 拿到圆角矩形的PathshadowDrawable.getPathForSize(getWidth(), getHeight(), cornersMask);}@Overridepublic ShapeAppearanceModel getShapeModel() {return this.shapeModel;}@Overridepublic void setCornerCut(float cornerCut) {shapeModel = ShapeAppearanceModel.builder().setAllCorners(new CutCornerTreatment(cornerCut)).build();setShapeModel(shapeModel);}@Overridepublic void setCornerRadius(float cornerRadius) {shapeModel = ShapeAppearanceModel.builder().setAllCorners(new RoundedCornerTreatment(cornerRadius)).build();setShapeModel(shapeModel);}@Overrideprotected void onLayout(boolean changed, int left, int top, int right, int bottom) {super.onLayout(changed, left, top, right, bottom);if (!changed)return;if (getWidth() == 0 || getHeight() == 0)return;updateCorners();}
}

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