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@@ -0,0 +1,198 @@
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+package com.sunwin.visitorapp.view;
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+
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+import android.content.Context;
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+import android.graphics.Bitmap;
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+import android.graphics.Canvas;
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+import android.graphics.Paint;
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+import android.graphics.PorterDuff;
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+import android.graphics.PorterDuffXfermode;
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+import android.graphics.Rect;
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+import android.graphics.drawable.BitmapDrawable;
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+import android.graphics.drawable.Drawable;
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+import android.graphics.drawable.NinePatchDrawable;
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+import android.util.AttributeSet;
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+
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+import androidx.appcompat.widget.AppCompatImageView;
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+
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+public class MyRoundImageView extends AppCompatImageView {
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+ private int mBorderThickness = 0;
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+ private Context mContext;
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+ private int defaultColor = 0xFFFFFFFF;
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+ // 如果只有其中一个有值,则只画一个圆形边框
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+ private int mBorderOutsideColor = 0;
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+ private int mBorderInsideColor = 0;
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+ // 控件默认长、宽
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+ private int defaultWidth = 0;
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+ private int defaultHeight = 0;
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+
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+ public MyRoundImageView(Context context) {
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+ super(context);
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+ mContext = context;
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+ }
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+
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+ public MyRoundImageView(Context context, AttributeSet attrs) {
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+ super(context, attrs);
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+ mContext = context;
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+ setCustomAttributes(attrs);
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+ }
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+
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+ public MyRoundImageView(Context context, AttributeSet attrs, int defStyle) {
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+ super(context, attrs, defStyle);
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+ mContext = context;
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+ setCustomAttributes(attrs);
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+ }
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+
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+ private void setCustomAttributes(AttributeSet attrs) {
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+
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+// TypedArray a = mContext.obtainStyledAttributes(attrs,R.styleable.roundedimageview);
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+// mBorderThickness = a.getDimensionPixelSize(R.styleable.roundedimageview_border_thickness, 0);
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+// mBorderOutsideColor = a.getColor(R.styleable.roundedimageview_border_outside_color,defaultColor);
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+// mBorderInsideColor = a.getColor(R.styleable.roundedimageview_border_inside_color, defaultColor);
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+ }
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+
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+ @Override
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+ protected void onDraw(Canvas canvas) {
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+ Drawable drawable = getDrawable();
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+ if (drawable == null) {
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+ return;
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+ }
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+
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+ if (getWidth() == 0 || getHeight() == 0) {
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+ return;
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+ }
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+ this.measure(0, 0);
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+ if (drawable.getClass() == NinePatchDrawable.class)
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+ return;
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+ Bitmap b = ((BitmapDrawable) drawable).getBitmap();
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+ Bitmap bitmap = b.copy(Bitmap.Config.ARGB_8888, true);
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+ if (defaultWidth == 0) {
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+ defaultWidth = getWidth();
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+
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+ }
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+ if (defaultHeight == 0) {
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+ defaultHeight = getHeight();
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+ }
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+ // 保证重新读取图片后不会因为图片大小而改变控件宽、高的大小(针对宽、高为wrap_content布局的imageview,但会导致margin无效)
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+ // if (defaultWidth != 0 && defaultHeight != 0) {
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+ // LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
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+ // defaultWidth, defaultHeight);
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+ // setLayoutParams(params);
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+ // }
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+ int radius = 0;
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+ if (mBorderInsideColor != defaultColor
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+ && mBorderOutsideColor != defaultColor) {// 定义画两个边框,分别为外圆边框和内圆边框
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+ radius = (defaultWidth < defaultHeight ? defaultWidth
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+ : defaultHeight) / 2 - 2 * mBorderThickness;
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+ // 画内圆
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+ drawCircleBorder(canvas, radius + mBorderThickness / 2,
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+ mBorderInsideColor);
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+ // 画外圆
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+ drawCircleBorder(canvas, radius + mBorderThickness
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+ + mBorderThickness / 2, mBorderOutsideColor);
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+ } else if (mBorderInsideColor != defaultColor
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+ && mBorderOutsideColor == defaultColor) {// 定义画一个边框
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+ radius = (defaultWidth < defaultHeight ? defaultWidth
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+ : defaultHeight) / 2 - mBorderThickness;
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+ drawCircleBorder(canvas, radius + mBorderThickness / 2,
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+ mBorderInsideColor);
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+ } else if (mBorderInsideColor == defaultColor
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+ && mBorderOutsideColor != defaultColor) {// 定义画一个边框
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+ radius = (defaultWidth < defaultHeight ? defaultWidth
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+ : defaultHeight) / 2 - mBorderThickness;
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+ drawCircleBorder(canvas, radius + mBorderThickness / 2,
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+ mBorderOutsideColor);
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+ } else {// 没有边框
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+ radius = (defaultWidth < defaultHeight ? defaultWidth
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+ : defaultHeight) / 2;
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+ }
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+ Bitmap roundBitmap = getCroppedRoundBitmap(bitmap, radius);
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+ canvas.drawBitmap(roundBitmap, defaultWidth / 2 - radius, defaultHeight
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+ / 2 - radius, null);
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+ }
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+
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+ /**
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+ * 获取裁剪后的圆形图片
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+ *
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+ * @param radius
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+ * 半径
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+ */
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+ public Bitmap getCroppedRoundBitmap(Bitmap bmp, int radius) {
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+ Bitmap scaledSrcBmp;
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+ int diameter = radius * 2;
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+
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+ // 为了防止宽高不相等,造成圆形图片变形,因此截取长方形中处于中间位置最大的正方形图片
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+ int bmpWidth = bmp.getWidth();
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+ int bmpHeight = bmp.getHeight();
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+ int squareWidth = 0, squareHeight = 0;
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+ int x = 0, y = 0;
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+ Bitmap squareBitmap;
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+ if (bmpHeight > bmpWidth) {// 高大于宽
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+ squareWidth = squareHeight = bmpWidth;
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+ x = 0;
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+ y = (bmpHeight - bmpWidth) / 2;
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+ // 截取正方形图片
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+ squareBitmap = Bitmap.createBitmap(bmp, x, y, squareWidth,
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+ squareHeight);
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+ } else if (bmpHeight < bmpWidth) {// 宽大于高
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+ squareWidth = squareHeight = bmpHeight;
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+ x = (bmpWidth - bmpHeight) / 2;
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+ y = 0;
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+ squareBitmap = Bitmap.createBitmap(bmp, x, y, squareWidth,
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+ squareHeight);
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+ } else {
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+ squareBitmap = bmp;
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+ }
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+
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+ if (squareBitmap.getWidth() != diameter
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+ || squareBitmap.getHeight() != diameter) {
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+ scaledSrcBmp = Bitmap.createScaledBitmap(squareBitmap, diameter,
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+ diameter, true);
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+
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+ } else {
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+ scaledSrcBmp = squareBitmap;
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+ }
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+ Bitmap output = Bitmap.createBitmap(scaledSrcBmp.getWidth(),
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+ scaledSrcBmp.getHeight(), Bitmap.Config.ARGB_8888);
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+ Canvas canvas = new Canvas(output);
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+
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+ Paint paint = new Paint();
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+ Rect rect = new Rect(0, 0, scaledSrcBmp.getWidth(),
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+ scaledSrcBmp.getHeight());
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+
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+ paint.setAntiAlias(true);
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+ paint.setFilterBitmap(true);
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+ paint.setDither(true);
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+ canvas.drawARGB(0, 0, 0, 0);
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+ canvas.drawCircle(scaledSrcBmp.getWidth() / 2,
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+ scaledSrcBmp.getHeight() / 2, scaledSrcBmp.getWidth() / 2,
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+ paint);
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+ paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
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+ canvas.drawBitmap(scaledSrcBmp, rect, rect, paint);
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+ // bitmap回收(recycle导致在布局文件XML看不到效果)
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+ // bmp.recycle();
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+ // squareBitmap.recycle();
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+ // scaledSrcBmp.recycle();
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+ bmp = null;
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+ squareBitmap = null;
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+ scaledSrcBmp = null;
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+ return output;
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+ }
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+
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+ /**
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+ * 边缘画圆
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+ */
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+ private void drawCircleBorder(Canvas canvas, int radius, int color) {
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+ Paint paint = new Paint();
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+ /* 去锯齿 */
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+ paint.setAntiAlias(true);
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+ paint.setFilterBitmap(true);
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+ paint.setDither(true);
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+ paint.setColor(color);
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+ /* 设置paint的 style 为STROKE:空心 */
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+ paint.setStyle(Paint.Style.STROKE);
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+ /* 设置paint的外框宽度 */
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+ paint.setStrokeWidth(mBorderThickness);
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+ canvas.drawCircle(defaultWidth / 2, defaultHeight / 2, radius, paint);
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+ }
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+
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+}
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