1

我有一个带圆角方法的位图：

代码：

 public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, int pixels) {
        Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);
    BitmapDrawable TileMe = new BitmapDrawable(output);
    TileMe.setTileModeX(Shader.TileMode.REPEAT);
    TileMe.setTileModeY(Shader.TileMode.REPEAT);
        Canvas canvas = new Canvas(TileMe);

        final int color = 0xff424242;
        final Paint paint = new Paint();
        final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
        final RectF rectF = new RectF(rect);
        final float roundPx = pixels;

        paint.setAntiAlias(true);
        canvas.drawARGB(0, 0, 0, 0);
        paint.setColor(color);
        canvas.drawRoundRect(rectF, roundPx, roundPx, paint);

        paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
        canvas.drawBitmap(bitmap, rect, rect, paint);

        return output;
        }

这只是使图像具有圆角并且拐角也不平滑，现在我怎样才能使其以重复模式和圆角平铺？

4

2 回答 2

3

终于我解决了！！！

class CurvedAndTiled extends Drawable {

    private final float mCornerRadius;
    private final RectF mRect = new RectF();
    private final BitmapShader mBitmapShader;
    private final Paint mTilePaint;        

    CurvedAndTiled(
            Bitmap bitmap, 
            float cornerRadius) {
        mCornerRadius = cornerRadius;

        mBitmapShader = new BitmapShader(bitmap,
                Shader.TileMode.REPEAT, Shader.TileMode.REPEAT);

        mTilePaint = new Paint();
        mTilePaint.setAntiAlias(true);
        mTilePaint.setShader(mBitmapShader);             
    }

    @Override
    protected void onBoundsChange(Rect bounds) {
        super.onBoundsChange(bounds);
        mRect.set(0, 0, bounds.width(), bounds.height());
    }

    @Override
    public void draw(Canvas canvas) {
        canvas.drawRoundRect(mRect, mCornerRadius, mCornerRadius, mTilePaint);           
    }

    @Override
    public int getOpacity() {
        return PixelFormat.TRANSLUCENT;
    }

    @Override
    public void setAlpha(int alpha) {
        mTilePaint.setAlpha(alpha);
    }

    @Override
    public void setColorFilter(ColorFilter cf) {
        mTilePaint.setColorFilter(cf);
    }       
}

将此也应用到您的图像视图中。

backgroundImage.setBackgroundDrawable(new CurvedAndTiled(((BitmapDrawable) drawable).getBitmap(), 45));

希望它将来对某人有所帮助。

快乐编码:)

于 2013-10-09T10:03:53.267 回答
1

尝试使用扩展BitmapDrawable并覆盖paint()将图像设置为平铺模式的方法：

在这种方法中，我们避免创建具有视图大小的新位图。

class MyBitmapDrawable extends BitmapDrawable {
    private Paint mPaint = new Paint(Paint.FILTER_BITMAP_FLAG | Paint.DITHER_FLAG);
    private boolean mRebuildShader = true;
    private Matrix mMatrix = new Matrix();

    @Override
    public void draw(Canvas canvas) {
        Bitmap bitmap = getBitmap();
        if (bitmap == null) {
            return;
        }

        if (mRebuildShader) {
            mPaint.setShader(new BitmapShader(bitmap, TileMode.REPEAT, TileMode.REPEAT));
            mRebuildShader = false;
        }

        // Translate down by the remainder
        mMatrix.setTranslate(0, getBounds().bottom % getIntrinsicHeight());
        canvas.save();
        canvas.setMatrix(mMatrix);
        canvas.drawRect(getBounds(), mPaint);
        canvas.restore();
    }
}

它可以设置为这样的视图：

view.setBackgroundDrawable(new MyBitmapDrawable(getResources().getDrawable(R.drawable.smiley).getBitmap()));

在此处查看其参考

于 2013-10-09T06:19:24.480 回答