導入依賴：我不知道其他版本的能不能用

api 'com.github.bumptech.glide:glide:4.6.1'

1、創建一個類

/*** 加載圓形頭像帶白色邊框*/ public class GlideCircleWithBorder extends BitmapTransformation {private Paint mBorderPaint;private float mBorderWidth;public GlideCircleWithBorder(Context context) {super(context);}public GlideCircleWithBorder(Context context, int borderWidth, int borderColor) {super(context);mBorderWidth = Resources.getSystem().getDisplayMetrics().density * borderWidth;mBorderPaint = new Paint();mBorderPaint.setDither(true);mBorderPaint.setAntiAlias(true);mBorderPaint.setColor(borderColor);mBorderPaint.setStyle(Paint.Style.STROKE);mBorderPaint.setStrokeWidth(mBorderWidth);}protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {return circleCrop(pool, toTransform);}private Bitmap circleCrop(BitmapPool pool, Bitmap source) {if (source == null) {return null;}int size = (int) (Math.min(source.getWidth(), source.getHeight()) - (mBorderWidth / 2));int x = (source.getWidth() - size) / 2;int y = (source.getHeight() - size) / 2;Bitmap squared = Bitmap.createBitmap(source, x, y, size, size);Bitmap result = pool.get(size, size, Bitmap.Config.ARGB_8888);if (result == null) {result = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);}//創建畫筆 畫布 手動描繪邊框Canvas canvas = new Canvas(result);Paint paint = new Paint();paint.setShader(new BitmapShader(squared, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));paint.setAntiAlias(true);float r = size / 2f;canvas.drawCircle(r, r, r, paint);if (mBorderPaint != null) {float borderRadius = r - mBorderWidth / 2;canvas.drawCircle(r, r, borderRadius, mBorderPaint);}return result;}@Overridepublic void updateDiskCacheKey(MessageDigest messageDigest) {} }

2、在Activity中實用

Glide.with(this).load("http://05imgmini.eastday.com/mobile/20181013/20181013_da58d8665e2d35cd7c2ad4db1a820288_cover_mwpm_03200403.jpg").apply(new RequestOptions().error(this.getResources().getDrawable(R.mipmap.piccirclegreen)).placeholder(R.mipmap.ic_launcher).centerCrop().diskCacheStrategy(DiskCacheStrategy.ALL).transform(new GlideCircleWithBorder(this, 3, Color.parseColor("#ccffffff")))).into(image);

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總結

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