問題：在glide配置中使用options.transforms(new GlideRoundedCornersTransform(context,5));來實現圓角以及centerCrop效果時，刷新界面會出現閃爍
解決方法：由于glide默認采用了centerCrop方式顯示圖片，所以基本不需要再次設置，而圓角采用自定義控件的方式就可以實現其效果并不會出現閃爍問題

當然如果不介意可以使用下面方法：

public class GlideRoundTransform extends CenterCrop {private static float radius = 10f;public GlideRoundTransform(Context context) {this(context, 10);}public GlideRoundTransform(Context context, int dp) {super();this.radius = UnitConversionUtil.dip2px(context, dp);}@Overrideprotected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {//glide4.0+Bitmap transform = super.transform(pool, toTransform, outWidth, outHeight);return roundCrop(pool, transform);//glide3.0//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;}public String getId() {return getClass().getName() + Math.round(radius);}@Overridepublic void updateDiskCacheKey(MessageDigest messageDigest) {} }

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