Glide或Picasso设置圆形图片

最新推荐文章于 2024-08-08 17:49:47 发布

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最新推荐文章于 2024-08-08 17:49:47 发布

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本文链接：https://blog.youkuaiyun.com/qq_23869969/article/details/80812277

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本文介绍了如何在Android应用中利用Glide和Picasso库将图片转换为圆形展示。通过示例代码，展示了这两个流行库在处理图片裁剪和形状转换方面的用法。

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Picasson ：

public class CircleTransform implements Transformation {



    @Override
    public Bitmap transform(Bitmap source) {
        int size = Math.min(source.getWidth(), source.getHeight());
        int x = (source.getWidth() - size) / 2;
        int y = (source.getHeight() - size) / 2;
        Bitmap squaredBitmap = Bitmap.createBitmap(source, x, y, size, size);
        Bitmap bitmap = Bitmap.createBitmap(size, size, source.getConfig());
        Canvas canvas = new Canvas(bitmap);
        Paint paint = new Paint();
        BitmapShader shader = new BitmapShader(squaredBitmap, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP);
        paint.setShader(shader);
        paint.setAntiAlias(true);
        float r = size / 2f;
        canvas.drawCircle(r, r, r, paint);
        squaredBitmap.recycle();
        source.recycle();
        return bitmap;
    }

    @Override
    public String key() {
        return "circle";
    }

    public static Bitmap makeRoundCorner(Bitmap bitmap)
    {
        int width = bitmap.getWidth();
        int height = bitmap.getHeight();
        int left = 0, top = 0, right = width, bottom = height;
        float roundPx = height/2;
        if (width > height) {
            left = (width - height)/2;
            top = 0;
            right = left + height;
            bottom = height;
        } else if (height > width) {
            left = 0;
            top = (height - width)/2;
            right = width;
            bottom = top + width;
            roundPx = width/2;
        }

        Bitmap output = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(output);
        int color = 0xff424242;
        Paint paint = new Paint();
        Rect rect = new Rect(left, top, right, bottom);
        RectF rectF = new RectF(rect);

        paint.setAntiAlias(true);
        canvas.drawARGB(0, 0, 0, 0);
        paint.setColor(color);
        canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
        canvas.drawBitmap(bitmap, rect, rect, paint);
        return output;
    }
}

Glide:

public class CircleTransform extends BitmapTransformation {

    public CircleTransform(Context context) {
        super(context);
    }

    @Override protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
        return circleCrop(pool, toTransform);
    }

    private static Bitmap circleCrop(BitmapPool pool, Bitmap source) {
        if (source == null) return null;

        int size = Math.min(source.getWidth(), source.getHeight());
        int x = (source.getWidth() - size) / 2;
        int y = (source.getHeight() - size) / 2;

        // TODO this could be acquired from the pool too
        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);
        }

        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);
        return result;
    }

    @Override public String getId() {
        return getClass().getName();
    }
}