版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/u012246458/article/details/84992196
需求：
1、Glide V4使用方法和圆形图片地址：https://blog.csdn.net/u012246458/article/details/79160965
代码
使用：
GlideApp.with(context).
load(path)
.placeholder(R.drawable.img_feature_1)
.transform(new GlideRoundTransform(10,0))
.into(imageView);GlideRoundTransform工具类：
package briefer.pet.utils;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;
import android.graphics.Shader;
import android.support.annotation.NonNull;
import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;
import java.security.MessageDigest;
/**
* Glide 圆角 Transform
*/
public class GlideRoundTransform extends BitmapTransformation {
private static final int VERSION = 1;
private static final String ID = "jp.wasabeef.glide.transformations.GlideRoundTransform." + VERSION;
public enum CornerType {
ALL,
TOP_LEFT, TOP_RIGHT, BOTTOM_LEFT, BOTTOM_RIGHT,
TOP, BOTTOM, LEFT, RIGHT,
OTHER_TOP_LEFT, OTHER_TOP_RIGHT, OTHER_BOTTOM_LEFT, OTHER_BOTTOM_RIGHT,
DIAGONAL_FROM_TOP_LEFT, DIAGONAL_FROM_TOP_RIGHT
}
private int radius;
private int diameter;
private int margin;
private CornerType cornerType;
public GlideRoundTransform(int radius, int margin) {
this(radius, margin, CornerType.ALL);
}
public GlideRoundTransform(int radius, int margin, CornerType cornerType) {
this.radius = radius;
this.diameter = this.radius * 2;
this.margin = margin;
this.cornerType = cornerType;
}
@Override
protected Bitmap transform(@NonNull BitmapPool pool,
@NonNull Bitmap toTransform, int outWidth, int outHeight) {
int width = toTransform.getWidth();
int height = toTransform.getHeight();
Bitmap bitmap = pool.get(width, height, Bitmap.Config.ARGB_8888);
bitmap.setHasAlpha(true);
Canvas canvas = new Canvas(bitmap);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setShader(new BitmapShader(toTransform, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP));
drawRoundRect(canvas, paint, width, height);
return bitmap;
}
private void drawRoundRect(Canvas canvas, Paint paint, float width, float height) {
float right = width - margin;
float bottom = height - margin;
switch (cornerType) {
case ALL:
canvas.drawRoundRect(new RectF(margin, margin, right, bottom), radius, radius, paint);
break;
case TOP_LEFT:
drawTopLeftRoundRect(canvas, paint, right, bottom);
break;
case TOP_RIGHT:
drawTopRightRoundRect(canvas, paint, right, bottom);
break;
case BOTTOM_LEFT:
drawBottomLeftRoundRect(canvas, paint, right, bottom);
break;
case BOTTOM_RIGHT:
drawBottomRightRoundRect(canvas, paint, right, bottom);
break;
case TOP:
drawTopRoundRect(canvas, paint, right, bottom);
break;
case BOTTOM:
drawBottomRoundRect(canvas, paint, right, bottom);
break;
case LEFT:
drawLeftRoundRect(canvas, paint, right, bottom);
break;
case RIGHT:
drawRightRoundRect(canvas, paint, right, bottom);
break;
case OTHER_TOP_LEFT:
drawOtherTopLeftRoundRect(canvas, paint, right, bottom);
break;
case OTHER_TOP_RIGHT:
drawOtherTopRightRoundRect(canvas, paint, right, bottom);
break;
case OTHER_BOTTOM_LEFT:
drawOtherBottomLeftRoundRect(canvas, paint, right, bottom);
break;
case OTHER_BOTTOM_RIGHT:
drawOtherBottomRightRoundRect(canvas, paint, right, bottom);
break;
case DIAGONAL_FROM_TOP_LEFT:
drawDiagonalFromTopLeftRoundRect(canvas, paint, right, bottom);
break;
case DIAGONAL_FROM_TOP_RIGHT:
drawDiagonalFromTopRightRoundRect(canvas, paint, right, bottom);
break;
default:
canvas.drawRoundRect(new RectF(margin, margin, right, bottom), radius, radius, paint);
break;
}
}
private void drawTopLeftRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
canvas.drawRoundRect(new RectF(margin, margin, margin + diameter, margin + diameter), radius,
radius, paint);
canvas.drawRect(new RectF(margin, margin + radius, margin + radius, bottom), paint);
canvas.drawRect(new RectF(margin + radius, margin, right, bottom), paint);
}
private void drawTopRightRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
canvas.drawRoundRect(new RectF(right - diameter, margin, right, margin + diameter), radius,
radius, paint);
canvas.drawRect(new RectF(margin, margin, right - radius, bottom), paint);
canvas.drawRect(new RectF(right - radius, margin + radius, right, bottom), paint);
}
private void drawBottomLeftRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
canvas.drawRoundRect(new RectF(margin, bottom - diameter, margin + diameter, bottom), radius,
radius, paint);
canvas.drawRect(new RectF(margin, margin, margin + diameter, bottom - radius), paint);
canvas.drawRect(new RectF(margin + radius, margin, right, bottom), paint);
}
private void drawBottomRightRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
canvas.drawRoundRect(new RectF(right - diameter, bottom - diameter, right, bottom), radius,
radius, paint);
canvas.drawRect(new RectF(margin, margin, right - radius, bottom), paint);
canvas.drawRect(new RectF(right - radius, margin, right, bottom - radius), paint);
}
private void drawTopRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
canvas.drawRoundRect(new RectF(margin, margin, right, margin + diameter), radius, radius,
paint);
canvas.drawRect(new RectF(margin, margin + radius, right, bottom), paint);
}
private void drawBottomRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
canvas.drawRoundRect(new RectF(margin, bottom - diameter, right, bottom), radius, radius,
paint);
canvas.drawRect(new RectF(margin, margin, right, bottom - radius), paint);
}
private void drawLeftRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
canvas.drawRoundRect(new RectF(margin, margin, margin + diameter, bottom), radius, radius,
paint);
canvas.drawRect(new RectF(margin + radius, margin, right, bottom), paint);
}
private void drawRightRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
canvas.drawRoundRect(new RectF(right - diameter, margin, right, bottom), radius, radius, paint);
canvas.drawRect(new RectF(margin, margin, right - radius, bottom), paint);
}
private void drawOtherTopLeftRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
canvas.drawRoundRect(new RectF(margin, bottom - diameter, right, bottom), radius, radius,
paint);
canvas.drawRoundRect(new RectF(right - diameter, margin, right, bottom), radius, radius, paint);
canvas.drawRect(new RectF(margin, margin, right - radius, bottom - radius), paint);
}
private void drawOtherTopRightRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
canvas.drawRoundRect(new RectF(margin, margin, margin + diameter, bottom), radius, radius,
paint);
canvas.drawRoundRect(new RectF(margin, bottom - diameter, right, bottom), radius, radius,
paint);
canvas.drawRect(new RectF(margin + radius, margin, right, bottom - radius), paint);
}
private void drawOtherBottomLeftRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
canvas.drawRoundRect(new RectF(margin, margin, right, margin + diameter), radius, radius,
paint);
canvas.drawRoundRect(new RectF(right - diameter, margin, right, bottom), radius, radius, paint);
canvas.drawRect(new RectF(margin, margin + radius, right - radius, bottom), paint);
}
private void drawOtherBottomRightRoundRect(Canvas canvas, Paint paint, float right,
float bottom) {
canvas.drawRoundRect(new RectF(margin, margin, right, margin + diameter), radius, radius,
paint);
canvas.drawRoundRect(new RectF(margin, margin, margin + diameter, bottom), radius, radius,
paint);
canvas.drawRect(new RectF(margin + radius, margin + radius, right, bottom), paint);
}
private void drawDiagonalFromTopLeftRoundRect(Canvas canvas, Paint paint, float right,
float bottom) {
canvas.drawRoundRect(new RectF(margin, margin, margin + diameter, margin + diameter), radius,
radius, paint);
canvas.drawRoundRect(new RectF(right - diameter, bottom - diameter, right, bottom), radius,
radius, paint);
canvas.drawRect(new RectF(margin, margin + radius, right - diameter, bottom), paint);
canvas.drawRect(new RectF(margin + diameter, margin, right, bottom - radius), paint);
}
private void drawDiagonalFromTopRightRoundRect(Canvas canvas, Paint paint, float right,
float bottom) {
canvas.drawRoundRect(new RectF(right - diameter, margin, right, margin + diameter), radius,
radius, paint);
canvas.drawRoundRect(new RectF(margin, bottom - diameter, margin + diameter, bottom), radius,
radius, paint);
canvas.drawRect(new RectF(margin, margin, right - radius, bottom - radius), paint);
canvas.drawRect(new RectF(margin + radius, margin + radius, right, bottom), paint);
}
@Override public String toString() {
return "RoundedTransformation(radius=" + radius + ", margin=" + margin + ", diameter="
+ diameter + ", cornerType=" + cornerType.name() + ")";
}
@Override public boolean equals(Object o) {
return o instanceof GlideRoundTransform &&
((GlideRoundTransform) o).radius == radius &&
((GlideRoundTransform) o).diameter == diameter &&
((GlideRoundTransform) o).margin == margin &&
((GlideRoundTransform) o).cornerType == cornerType;
}
@Override public int hashCode() {
return ID.hashCode() + radius * 10000 + diameter * 1000 + margin * 100 + cornerType.ordinal() * 10;
}
@Override public void updateDiskCacheKey(@NonNull MessageDigest messageDigest) {
messageDigest.update((ID + radius + diameter + margin + cornerType).getBytes(CHARSET));
}
}