package 包名;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 com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool; import com.bumptech.glide.load.resource.bitmap.BitmapTransformation; import com.bumptech.glide.load.resource.bitmap.TransformationUtils;import java.security.MessageDigest;public class GlideRoundTransform extends BitmapTransformation {// private static float radius = 0f; // // public GlideRoundTransform(Context context) { // this(context, 4); // } // // public GlideRoundTransform(Context context, int dp) { // super(context); // this.radius = Resources.getSystem().getDisplayMetrics().density * dp; // } // // @Override // protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) { // return roundCrop(pool, toTransform); // } // // private static Bitmap roundCrop(BitmapPool pool, Bitmap source) { // if (source == null) return null; // // Bitmap result = pool.get(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888); // if (result == null) { // result = Bitmap.createBitmap(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888); // } // // Canvas canvas = new Canvas(result); // Paint paint = new Paint(); // paint.setShader(new BitmapShader(source, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP)); // paint.setAntiAlias(true); // RectF rectF = new RectF(0f, 0f, source.getWidth(), source.getHeight()); // canvas.drawRoundRect(rectF, radius, radius, paint); // return result; // } // // @Override // public String getId() { // return getClass().getName() + Math.round(radius); // }//----------上面的是glide 4.0 之前的處理方式的//---------- 下面是 glide 4.0 之后的處理方式private static float radius = 0f;public GlideRoundTransform(Context context) {this(context, 4);}public GlideRoundTransform(Context context, int dp) { // super(context);this.radius = Resources.getSystem().getDisplayMetrics().density * dp;}@Overrideprotected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {Bitmap bitmap = TransformationUtils.centerCrop(pool, toTransform, outWidth, outHeight);return roundCrop(pool, bitmap);}private static Bitmap roundCrop(BitmapPool pool, Bitmap source) {if (source == null) return null;Bitmap result = pool.get(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);if (result == null) {result = Bitmap.createBitmap(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);}Canvas canvas = new Canvas(result);Paint paint = new Paint();paint.setShader(new BitmapShader(source, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));paint.setAntiAlias(true);RectF rectF = new RectF(0f, 0f, source.getWidth(), source.getHeight());canvas.drawRoundRect(rectF, radius, radius, paint);return result;}public String getId() {return getClass().getName() + Math.round(radius);}@Overridepublic void updateDiskCacheKey(MessageDigest messageDigest) {} }

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