android - 以圆形显示图像

Question

我正在从服务器获取图像，它们是正方形的。但是我想在我的应用程序中将它们显示在一个圆圈中。我已经通过制作圆形 Drawable 来尝试它。但它不起作用。谁能建议我如何做到这一点。我将不胜感激任何帮助。谢谢。

Answer 1

试试下面的代码:-

Universal loader

    ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(getApplicationContext()).defaultDisplayImageOptions(options)
                .build();
    ImageLoader.getInstance().init(config);

    DisplayImageOptions options1 = new        DisplayImageOptions.Builder().cacheInMemory(true).cacheOnDisc(true).displayer(new RoundedBitmapDisplayer(60)).build();
    ImageLoader.getInstance().displayImage(Uri.parse(imgByURL).toString(), imgThumb, options);

或

imageViewUser.setImageBitmap(getCircleBitmap(bitmap));


import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
public Bitmap getCircleBitmap(Bitmap bitmap)
    {
        Bitmap output;
        Canvas canvas = null;
        final int color = 0xffff0000;
        final Paint paint = new Paint();
        Rect rect = null;
        if (bitmap.getHeight() > 501)
        {
            output = Bitmap.createBitmap(500, 500, Bitmap.Config.ARGB_8888);
            canvas = new Canvas(output);
            rect = new Rect(0, 0, 500, 500);
        }
        else
        {
            System.out.println("output          else =======");
            bitmap = Bitmap.createScaledBitmap(bitmap, 500, 500, false);
            output = Bitmap.createBitmap(500, 500, Bitmap.Config.ARGB_8888);
            canvas = new Canvas(output);
            rect = new Rect(0, 0, 500, 500);
        }
        final RectF rectF = new RectF(rect);

        paint.setAntiAlias(true);
        paint.setDither(true);
        paint.setFilterBitmap(true);
        canvas.drawARGB(0, 0, 0, 0);
        paint.setColor(color);
        canvas.drawOval(rectF, paint);

        paint.setColor(Color.BLUE);
        paint.setStyle(Paint.Style.STROKE);
        paint.setStrokeWidth((float) 1);
        paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
        canvas.drawBitmap(bitmap, rect, rect, paint);
        return output;
    }