Android图片圆角转换 RoundedImageView开源项目 小记
16lz
2021-01-23
Android 将图片快速转换成圆角的方法
使用开源项目 RoundedImageView
github上面的开源项目 官方地址为: https://github.com/vinc3m1/RoundedImageView
效果如下:
下面快速的集成进来
步骤分为3个
1: 去github上下载 工程
https://github.com/vinc3m1/RoundedImageView
2: 导入工程
3 在布局中使用它
属性的意义:
makeramen:border_width="2dip" 表示图片的边框宽度为2个dp
makeramen: corner_radius表示为 图片转圆角的弧度
修改 makeramen:corner_radius="100dip"
当 corner_radius 设置为100dp 的时候 会呈现为圆形 .
( 注: com.makeramen.rounded.RoundedImageView 控件的宽和高需要相等 )
修改了example中的 rounded_item.xml
<?xml version="1.0" encoding="utf-8"?> 如下图:
用代码创建 :
RoundedImageView iv = new RoundedImageView(context);iv.setScaleType(ScaleType.CENTER_CROP);iv.setCornerRadius(10);iv.setBorderWidth(2);iv.setBorderColor(Color.DKGRAY);iv.setRoundedBackground(true);iv.setImageDrawable(drawable);iv.setBackground(backgroundDrawable);iv.setOval(true);贴上部分源码:
package com.makeramen;import android.content.Context;import android.content.res.ColorStateList;import android.content.res.Resources;import android.content.res.TypedArray;import android.graphics.Bitmap;import android.graphics.drawable.Drawable;import android.graphics.drawable.LayerDrawable;import android.net.Uri;import android.util.AttributeSet;import android.util.Log;import android.widget.ImageView;@SuppressWarnings("UnusedDeclaration")public class RoundedImageView extends ImageView { public static final String TAG = "RoundedImageView"; public static final float DEFAULT_RADIUS = 0f; public static final float DEFAULT_BORDER_WIDTH = 0f; private static final ScaleType[] SCALE_TYPES = { ScaleType.MATRIX, ScaleType.FIT_XY, ScaleType.FIT_START, ScaleType.FIT_CENTER, ScaleType.FIT_END, ScaleType.CENTER, ScaleType.CENTER_CROP, ScaleType.CENTER_INSIDE }; private float cornerRadius = DEFAULT_RADIUS; private float borderWidth = DEFAULT_BORDER_WIDTH; private ColorStateList borderColor = ColorStateList.valueOf(RoundedDrawable.DEFAULT_BORDER_COLOR); private boolean isOval = false; private boolean mutateBackground = false; private int mResource; private Drawable mDrawable; private Drawable mBackgroundDrawable; private ScaleType mScaleType; public RoundedImageView(Context context) { super(context); } public RoundedImageView(Context context, AttributeSet attrs) { this(context, attrs, 0); } public RoundedImageView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.RoundedImageView, defStyle, 0); int index = a.getInt(R.styleable.RoundedImageView_android_scaleType, -1); if (index >= 0) { setScaleType(SCALE_TYPES[index]); } else { // default scaletype to FIT_CENTER setScaleType(ScaleType.FIT_CENTER); } cornerRadius = a.getDimensionPixelSize(R.styleable.RoundedImageView_corner_radius, -1); borderWidth = a.getDimensionPixelSize(R.styleable.RoundedImageView_border_width, -1); // don't allow negative values for radius and border if (cornerRadius < 0) { cornerRadius = DEFAULT_RADIUS; } if (borderWidth < 0) { borderWidth = DEFAULT_BORDER_WIDTH; } borderColor = a.getColorStateList(R.styleable.RoundedImageView_border_color); if (borderColor == null) { borderColor = ColorStateList.valueOf(RoundedDrawable.DEFAULT_BORDER_COLOR); } mutateBackground = a.getBoolean(R.styleable.RoundedImageView_mutate_background, false); isOval = a.getBoolean(R.styleable.RoundedImageView_oval, false); updateDrawableAttrs(); updateBackgroundDrawableAttrs(true); a.recycle(); } @Override protected void drawableStateChanged() { super.drawableStateChanged(); invalidate(); } /** * Return the current scale type in use by this ImageView. * * @attr ref android.R.styleable#ImageView_scaleType * @see android.widget.ImageView.ScaleType */ @Override public ScaleType getScaleType() { return mScaleType; } /** * Controls how the image should be resized or moved to match the size * of this ImageView. * * @param scaleType The desired scaling mode. * @attr ref android.R.styleable#ImageView_scaleType */ @Override public void setScaleType(ScaleType scaleType) { assert scaleType != null; if (mScaleType != scaleType) { mScaleType = scaleType; switch (scaleType) { case CENTER: case CENTER_CROP: case CENTER_INSIDE: case FIT_CENTER: case FIT_START: case FIT_END: case FIT_XY: super.setScaleType(ScaleType.FIT_XY); break; default: super.setScaleType(scaleType); break; } updateDrawableAttrs(); updateBackgroundDrawableAttrs(false); invalidate(); } } @Override public void setImageDrawable(Drawable drawable) { mResource = 0; mDrawable = RoundedDrawable.fromDrawable(drawable); updateDrawableAttrs(); super.setImageDrawable(mDrawable); } @Override public void setImageBitmap(Bitmap bm) { mResource = 0; mDrawable = RoundedDrawable.fromBitmap(bm); updateDrawableAttrs(); super.setImageDrawable(mDrawable); } @Override public void setImageResource(int resId) { if (mResource != resId) { mResource = resId; mDrawable = resolveResource(); updateDrawableAttrs(); super.setImageDrawable(mDrawable); } } @Override public void setImageURI(Uri uri) { super.setImageURI(uri); setImageDrawable(getDrawable()); } private Drawable resolveResource() { Resources rsrc = getResources(); if (rsrc == null) { return null; } Drawable d = null; if (mResource != 0) { try { d = rsrc.getDrawable(mResource); } catch (Exception e) { Log.w(TAG, "Unable to find resource: " + mResource, e); // Don't try again. mResource = 0; } } return RoundedDrawable.fromDrawable(d); } @Override public void setBackground(Drawable background) { setBackgroundDrawable(background); } private void updateDrawableAttrs() { updateAttrs(mDrawable); } private void updateBackgroundDrawableAttrs(boolean convert) { if (mutateBackground) { if (convert) { mBackgroundDrawable = RoundedDrawable.fromDrawable(mBackgroundDrawable); } updateAttrs(mBackgroundDrawable); } } private void updateAttrs(Drawable drawable) { if (drawable == null) { return; } if (drawable instanceof RoundedDrawable) { ((RoundedDrawable) drawable) .setScaleType(mScaleType) .setCornerRadius(cornerRadius) .setBorderWidth(borderWidth) .setBorderColor(borderColor) .setOval(isOval); } else if (drawable instanceof LayerDrawable) { // loop through layers to and set drawable attrs LayerDrawable ld = ((LayerDrawable) drawable); for (int i = 0, layers = ld.getNumberOfLayers(); i < layers; i++) { updateAttrs(ld.getDrawable(i)); } } } @Override @Deprecated public void setBackgroundDrawable(Drawable background) { mBackgroundDrawable = background; updateBackgroundDrawableAttrs(true); super.setBackgroundDrawable(mBackgroundDrawable); } public float getCornerRadius() { return cornerRadius; } public void setCornerRadius(int resId) { setCornerRadius(getResources().getDimension(resId)); } public void setCornerRadius(float radius) { if (cornerRadius == radius) { return; } cornerRadius = radius; updateDrawableAttrs(); updateBackgroundDrawableAttrs(false); } public float getBorderWidth() { return borderWidth; } public void setBorderWidth(int resId) { setBorderWidth(getResources().getDimension(resId)); } public void setBorderWidth(float width) { if (borderWidth == width) { return; } borderWidth = width; updateDrawableAttrs(); updateBackgroundDrawableAttrs(false); invalidate(); } public int getBorderColor() { return borderColor.getDefaultColor(); } public void setBorderColor(int color) { setBorderColor(ColorStateList.valueOf(color)); } public ColorStateList getBorderColors() { return borderColor; } public void setBorderColor(ColorStateList colors) { if (borderColor.equals(colors)) { return; } borderColor = (colors != null) ? colors : ColorStateList.valueOf(RoundedDrawable.DEFAULT_BORDER_COLOR); updateDrawableAttrs(); updateBackgroundDrawableAttrs(false); if (borderWidth > 0) { invalidate(); } } public boolean isOval() { return isOval; } public void setOval(boolean oval) { isOval = oval; updateDrawableAttrs(); updateBackgroundDrawableAttrs(false); invalidate(); } public boolean isMutateBackground() { return mutateBackground; } public void setMutateBackground(boolean mutate) { if (mutateBackground == mutate) { return; } mutateBackground = mutate; updateBackgroundDrawableAttrs(true); invalidate(); }}小记: 太方便了 真心感谢开源者
每日精进一点点 谢谢
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