Android(安卓)Drawable工具类
收录整理的一些Drawable用法，包含：
- Drawable 着色
- Drawable 圆角矩形
- Drawable 选择器
package com.skx.tomike.util;import android.content.res.ColorStateList;import android.graphics.Color;import android.graphics.drawable.Drawable;import android.graphics.drawable.GradientDrawable;import android.graphics.drawable.StateListDrawable;import android.os.Build;import android.support.annotation.ColorInt;import android.support.annotation.NonNull;import android.support.annotation.Nullable;import android.support.v4.graphics.drawable.DrawableCompat;/** * Drawable 工具类 * * @author shiguotao */public class SkxDrawableUtil { //----------------------------------------------- Drawable 着色 start ----------------------------------------------------------------- /** * 对目标Drawable 进行着色 * * @param drawable 目标Drawable * @param color 着色的颜色值 * @return 着色处理后的Drawable */ public static Drawable tintDrawable(@NonNull Drawable drawable, int color) { // 获取此drawable的共享状态实例 Drawable wrappedDrawable = getCanTintDrawable(drawable); // 对 drawable 进行着色 DrawableCompat.setTint(wrappedDrawable, color); return wrappedDrawable; } /** * 对目标Drawable 进行着色 * * @param drawable 目标Drawable * @param colors 着色值 * @return 着色处理后的Drawable */ public static Drawable tintListDrawable(@NonNull Drawable drawable, ColorStateList colors) { Drawable wrappedDrawable = getCanTintDrawable(drawable); // 对 drawable 进行着色 DrawableCompat.setTintList(wrappedDrawable, colors); return wrappedDrawable; } /** * 获取可以进行tint 的Drawable * * 对原drawable进行重新实例化 newDrawable() * 包装 warp() * 可变操作 mutate() * * @param drawable 原始drawable * @return 可着色的drawable */
@NonNull private static Drawable getCanTintDrawable(@NonNull Drawable drawable) { // 获取此drawable的共享状态实例 Drawable.ConstantState state = drawable.getConstantState(); // 对drawable 进行重新实例化、包装、可变操作 return DrawableCompat.wrap(state == null ? drawable : state.newDrawable()).mutate(); } //------------------------------------------------ Drawable 着色 end ----------------------------------------------------------------- //----------------------------------------------------- Drawable 选择器 start----------------------------------------------------------- /** * 获得一个选择器Drawable. * Android 中 在xml中写的"selector"标签映射对象就是StateListDrawable 对象 * * @param defaultDrawable 默认时显示的Drawable * @param pressedDrawable 按下时显示的Drawable * @return 选择器Drawable */ public static StateListDrawable getSelectorDrawable(Drawable defaultDrawable, Drawable pressedDrawable) { if (defaultDrawable == null) return null; if (pressedDrawable == null) pressedDrawable = defaultDrawable; int[][] state = {{android.R.attr.state_enabled, -android.R.attr.state_pressed}, {android.R.attr.state_enabled, android.R.attr.state_pressed}}; StateListDrawable stateListDrawable = new StateListDrawable(); stateListDrawable.addState(state[0], defaultDrawable); stateListDrawable.addState(state[1], pressedDrawable); return stateListDrawable; } /** * 获得一个选择器Drawable. * Android 中 在xml中写的"selector"标签映射对象就是StateListDrawable 对象 * * @param defaultColor 默认时显示的颜色 * @param pressedColor 按下时显示的颜色 * @param radius 圆角半径 * @return 选择器Drawable */ public static StateListDrawable getSelectorDrawable(int defaultColor, int pressedColor, float radius) { Drawable defaultDrawable = new Builder(Builder.RECTANGLE).setColor(defaultColor).setCornerRadius(radius).create(); Drawable pressedDrawable = new Builder(Builder.RECTANGLE).setColor(pressedColor).setCornerRadius(radius).create(); return getSelectorDrawable(defaultDrawable, pressedDrawable); } //----------------------------------------------------- Drawable 选择器 end--------------------------------------------------------------- // --------------------------------------------- 构造器模式 ------------------------------------------------- /** * 获取建造者 * * @param shape 图形 * @return {@link Builder} */ public static Builder getBuilder(int shape) { return new Builder(shape); } /** * Drawable 建造者，链式结构，方便使用 */ public static class Builder { /** * Shape is a rectangle, possibly with rounded corners */ public static final int RECTANGLE = GradientDrawable.RECTANGLE; /** * Shape is an ellipse */ public static final int OVAL = GradientDrawable.OVAL; /** * Shape is a line */ public static final int LINE = GradientDrawable.LINE; private ColorStateList mSolidColors; /** * The color state list of the stroke */ private ColorStateList mStrokeColors; private @ColorInt int[] mGradientColors; /** * The width in pixels of the stroke */ private int mStrokeWidth = -1; // if >= 0 use stroking. /** * The length in pixels of the dashes, set to 0 to disable dashes */ private float mStrokeDashWidth = 0.0f; /** * The gap in pixels between dashes */ private float mStrokeDashGap = 0.0f; private float mRadius = 0.0f; // use this if mRadiusArray is null private float[] mRadiusArray = null; GradientDrawable mGradientDrawable; public Builder(int shape) { mGradientDrawable = new GradientDrawable(); mGradientDrawable.setShape(shape == RECTANGLE || shape == OVAL || shape == LINE ? shape : RECTANGLE); } /** * Sets the colors used to draw the gradient. * * Each color is specified as an ARGB integer and the array must contain at * least 2 colors. *
* Note: changing colors will affect all instances of a * drawable loaded from a resource. It is recommended to invoke * {@link # GradientDrawable.mutate()} before changing the colors. * * @param colors an array containing 2 or more ARGB colors * @see # mutate() * @see #setColor(int) */
public Builder setColors(@Nullable int[] colors) { this.mGradientColors = colors; return this; } /** * Changes this drawable to use a single color instead of a gradient. * * Note: changing color will affect all instances of a * drawable loaded from a resource. It is recommended to invoke * {@link # GradientDrawable.mutate()} before changing the color. * * @param argb The color used to fill the shape */
public Builder setColor(@ColorInt int argb) { this.mSolidColors = ColorStateList.valueOf(argb); return this; } /** * Changes this drawable to use a single color state list instead of a * gradient. Calling this method with a null argument will clear the color * and is equivalent to calling {@link #setColor(int)} with the argument * {@link Color#TRANSPARENT}. * * Note: changing color will affect all instances of a * drawable loaded from a resource. It is recommended to invoke * {@link # GradientDrawable.mutate()()} before changing the color.
* * @param colorStateList The color state list used to fill the shape */ public Builder setColor(@Nullable ColorStateList colorStateList) { this.mSolidColors = colorStateList; return this; } /** * Set the stroke width and color for the drawable. If width is zero, * then no stroke is drawn.
* Note: changing this property will affect all instances * of a drawable loaded from a resource. It is recommended to invoke * {@link # mutate()} before changing this property.
* * @param width The width in pixels of the stroke * @param color The color of the stroke * @see # mutate() * @see #setStroke(int, int, float, float) */ public Builder setStroke(int width, @ColorInt int color) { this.mStrokeWidth = width; this.mStrokeColors = ColorStateList.valueOf(color); return this; } /** * Set the stroke width and color state list for the drawable. If width * is zero, then no stroke is drawn.
* Note: changing this property will affect all instances * of a drawable loaded from a resource. It is recommended to invoke * {@link # mutate()} before changing this property.
* * @param width The width in pixels of the stroke * @param colorStateList The color state list of the stroke * @see #setStroke(int, ColorStateList, float, float) */ public Builder setStroke(int width, ColorStateList colorStateList) { this.mStrokeWidth = width; this.mStrokeColors = colorStateList; return this; } /** * Set the stroke width and color for the drawable. If width is zero, * then no stroke is drawn. This method can also be used to dash the stroke.
* Note: changing this property will affect all instances * of a drawable loaded from a resource. It is recommended to invoke * {@link # mutate()} before changing this property.
* * @param width The width in pixels of the stroke * @param color The color of the stroke * @param dashWidth The length in pixels of the dashes, set to 0 to disable dashes * @param dashGap The gap in pixels between dashes * @see #setStroke(int, int) */ public Builder setStroke(int width, @ColorInt int color, float dashWidth, float dashGap) { this.mStrokeWidth = width; this.mStrokeColors = ColorStateList.valueOf(color); this.mStrokeDashWidth = dashWidth; this.mStrokeDashGap = dashGap; return this; } /** * Set the stroke width and color state list for the drawable. If width * is zero, then no stroke is drawn. This method can also be used to dash * the stroke.
* Note: changing this property will affect all instances * of a drawable loaded from a resource. It is recommended to invoke * {@link # mutate()} before changing this property.
* * @param width The width in pixels of the stroke * @param colorStateList The color state list of the stroke * @param dashWidth The length in pixels of the dashes, set to 0 to disable dashes * @param dashGap The gap in pixels between dashes * @see #setStroke(int, ColorStateList) */ public Builder setStroke(int width, ColorStateList colorStateList, float dashWidth, float dashGap) { this.mStrokeWidth = width; this.mStrokeColors = colorStateList; this.mStrokeDashWidth = dashWidth; this.mStrokeDashGap = dashGap; return this; } public Builder setCornerRadius(float radius) { if (radius < 0) { radius = 0; } this.mRadius = radius; this.mRadiusArray = null; return this; } /** * Specifies radii for each of the 4 corners. For each corner, the array * contains 2 values, [X_radius, Y_radius]. The corners are * ordered top-left, top-right, bottom-right, bottom-left. This property * is honored only when the shape is of type {@link #RECTANGLE}. * * Note: changing this property will affect all instances * of a drawable loaded from a resource. It is recommended to invoke * {@link # mutate()} before changing this property. * * @param radii an array of length >= 8 containing 4 pairs of X and Y * radius for each corner, specified in pixels * @see #setCornerRadius(float) */
public Builder setCornerRadii(@Nullable float[] radii) { this.mRadiusArray = radii; if (radii == null) { this.mRadius = 0; } return this; } public Drawable create() { if (mRadiusArray != null) { mGradientDrawable.setCornerRadii(mRadiusArray); } else if (mRadius > 0.0f) { mGradientDrawable.setCornerRadius(mRadius); } if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { mGradientDrawable.setColor(mSolidColors); //显示一条虚线，破折线的宽度为dashWith，破折线之间的空隙的宽度为dashGap，当dashGap=0dp时，为实线 mGradientDrawable.setStroke(mStrokeWidth, mStrokeColors, mStrokeDashWidth, mStrokeDashGap); } else { mGradientDrawable.setColor(mSolidColors.getDefaultColor()); //显示一条虚线，破折线的宽度为dashWith，破折线之间的空隙的宽度为dashGap，当dashGap=0dp时，为实线 mGradientDrawable.setStroke(mStrokeWidth, mStrokeColors.getDefaultColor(), mStrokeDashWidth, mStrokeDashGap); } return mGradientDrawable; } }}更多相关文章
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