Android之glide加载图片圆角效果

1 问题

Android加载图片需要圆角化，有什么简单粗暴的方法吗？当然有，用我们的神器glide

2 解决办法

1）简单办法

            ImageView imageView = (ImageView)helper.getView(R.id.keepHomeAppImageview);            Glide.with(mContext)                    .asBitmap()                    .load(iconUrl)//                    .override(180, 180)                    .centerCrop()//                    .sizeMultiplier(0.5f)                    .into(new BitmapImageViewTarget(imageView) {                        @Override                        protected void setResource(Bitmap resource) {                            RoundedBitmapDrawable circularBitmapDrawable =                                    RoundedBitmapDrawableFactory.                                            create(mContext.getResources(), resource);                            circularBitmapDrawable.setCornerRadius(20);                            imageView.setImageDrawable(circularBitmapDrawable);                        }                    });

2）复杂办法

    public static void loadCircleImage(Context context, ImageView view, String path, boolean leftTop, boolean rightTop, boolean leftBottom, boolean rightBottom, int radius) {        RoundedCornersTransform transform = new RoundedCornersTransform(context, UnitUtils.dip2px(context, radius));        transform.setNeedCorner(leftTop, rightTop, leftBottom, rightBottom);        RequestOptions options = new RequestOptions().placeholder(RandomColorUtils.getRandomColor()).transform(transform);        Glide.with(context).asBitmap().load(path).apply(options).into(view);    }    public static void loadCircleImage(Context context, ImageView view, String path, int radius) {        loadCircleImage(context, view, path, true, true, true, true, radius);    }    public static void loadCircleImage(ImageView view, String path, int radius) {        loadCircleImage(BaseApp.getInstance().getContext(), view, path, true, true, true, true, radius);    }

public class RoundedCornersTransform implements Transformation {    private BitmapPool mBitmapPool;    private float radius;    private boolean isLeftTop, isRightTop, isLeftBottom, isRightBotoom;    /**     * 需要设置圆角的部分     *     * @param leftTop     左上角     * @param rightTop    右上角     * @param leftBottom  左下角     * @param rightBottom 右下角     */    public void setNeedCorner(boolean leftTop, boolean rightTop, boolean leftBottom, boolean rightBottom) {        isLeftTop = leftTop;        isRightTop = rightTop;        isLeftBottom = leftBottom;        isRightBotoom = rightBottom;    }    /**     * @param context 上下文     * @param radius  圆角幅度     */    public RoundedCornersTransform(Context context, float radius) {        this.mBitmapPool = Glide.get(context).getBitmapPool();        this.radius = radius;    }    @NonNull    @Override    public Resource transform(@NonNull Context context, @NonNull Resource resource, int outWidth, int outHeight) {        Bitmap source = resource.get();        int finalWidth, finalHeight;        //输出目标的宽高或高宽比例        float scale;        if (outWidth > outHeight) {            //如果 输出宽度 > 输出高度 求高宽比            scale = (float) outHeight / (float) outWidth;            finalWidth = source.getWidth();            //固定原图宽度,求最终高度            finalHeight = (int) ((float) source.getWidth() * scale);            if (finalHeight > source.getHeight()) {                //如果 求出的最终高度 > 原图高度 求宽高比                scale = (float) outWidth / (float) outHeight;                finalHeight = source.getHeight();                //固定原图高度,求最终宽度                finalWidth = (int) ((float) source.getHeight() * scale);            }        } else if (outWidth < outHeight) {            //如果 输出宽度 < 输出高度 求宽高比            scale = (float) outWidth / (float) outHeight;            finalHeight = source.getHeight();            //固定原图高度,求最终宽度            finalWidth = (int) ((float) source.getHeight() * scale);            if (finalWidth > source.getWidth()) {                //如果 求出的最终宽度 > 原图宽度 求高宽比                scale = (float) outHeight / (float) outWidth;                finalWidth = source.getWidth();                finalHeight = (int) ((float) source.getWidth() * scale);            }        } else {            //如果 输出宽度=输出高度            finalHeight = source.getHeight();            finalWidth = finalHeight;        }        //修正圆角        this.radius *= (float) finalHeight / (float) outHeight;        Bitmap outBitmap = this.mBitmapPool.get(finalWidth, finalHeight, Bitmap.Config.ARGB_8888);        if (outBitmap == null) {            outBitmap = Bitmap.createBitmap(finalWidth, finalHeight, Bitmap.Config.ARGB_8888);        }        Canvas canvas = new Canvas(outBitmap);        Paint paint = new Paint();        //关联画笔绘制的原图bitmap        BitmapShader shader = new BitmapShader(source, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);        //计算中心位置,进行偏移        int width = (source.getWidth() - finalWidth) / 2;        int height = (source.getHeight() - finalHeight) / 2;        if (width != 0 || height != 0) {            Matrix matrix = new Matrix();            matrix.setTranslate((float) (-width), (float) (-height));            shader.setLocalMatrix(matrix);        }        paint.setShader(shader);        paint.setAntiAlias(true);        RectF rectF = new RectF(0.0F, 0.0F, (float) canvas.getWidth(), (float) canvas.getHeight());        //先绘制圆角矩形        canvas.drawRoundRect(rectF, this.radius, this.radius, paint);        //左上角圆角        if (!isLeftTop) {            canvas.drawRect(0, 0, radius, radius, paint);        }        //右上角圆角        if (!isRightTop) {            canvas.drawRect(canvas.getWidth() - radius, 0, canvas.getWidth(), radius, paint);        }        //左下角圆角        if (!isLeftBottom) {            canvas.drawRect(0, canvas.getHeight() - radius, radius, canvas.getHeight(), paint);        }        //右下角圆角        if (!isRightBotoom) {            canvas.drawRect(canvas.getWidth() - radius, canvas.getHeight() - radius, canvas.getWidth(), canvas.getHeight(), paint);        }        return BitmapResource.obtain(outBitmap, this.mBitmapPool);    }    @Override    public void updateDiskCacheKey(@NonNull MessageDigest messageDigest) {    }}

1 问题

2 解决办法

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