Android 如何将矩形位图设置为圆形图像

我正在使用此函数获取圆形图像，并将其设置为imageview。对于方形位图，它工作正常，但对于矩形位图，它不会生成圆形图像，并且形状不均匀

   public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, int pixels) {
    Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(),                               Config.ARGB_8888);
    Canvas canvas = new Canvas(output);

    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(10, 10,150,150);
    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;
}

java

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.Bitmap.Config;
import android.graphics.PorterDuff.Mode;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ImageView;

public class RoundedImageView extends ImageView {


public RoundedImageView(Context context) {
    super(context);
    // TODO Auto-generated constructor stub
}

public RoundedImageView(Context context, AttributeSet attrs) {
    super(context, attrs);
}

public RoundedImageView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
}

@Override
protected void onDraw(Canvas canvas) {
Drawable drawable = getDrawable();

if (drawable == null) {
    return;
}

if (getWidth() == 0 || getHeight() == 0) {
    return; 
}
Bitmap b =  ((BitmapDrawable)drawable).getBitmap() ;
Bitmap bitmap = b.copy(Bitmap.Config.ARGB_8888, true);

int w = getWidth(), h = getHeight();


Bitmap roundBitmap =  getCroppedBitmap(bitmap, w);
canvas.drawBitmap(roundBitmap, 0,0, null);
}

public Bitmap getCroppedBitmap(Bitmap bmp, int radius) {
Bitmap sbmp;
if(bmp.getWidth() != radius || bmp.getHeight() != radius)
    sbmp = Bitmap.createScaledBitmap(bmp, radius, radius, false);
else
    sbmp = bmp;
Bitmap output = Bitmap.createBitmap(sbmp.getWidth(),
        sbmp.getHeight(), Config.ARGB_8888);
Canvas canvas = new Canvas(output);

final int color = 0xffa19774;
final Paint paint = new Paint();
final Rect rect = new Rect(0, 0, sbmp.getWidth(), sbmp.getHeight());

paint.setAntiAlias(true);
paint.setFilterBitmap(true);
paint.setDither(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(Color.parseColor("#BAB399"));
canvas.drawCircle(sbmp.getWidth() / 2+0.7f, sbmp.getHeight() / 2+0.7f,
        sbmp.getWidth() / 2+0.1f, paint);
paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
canvas.drawBitmap(sbmp, rect, rect, paint);


        return output;
}

}

并通过调用位图

imgview.setImageBitmap(new RoundedImageView(getApplicationContext()).getCroppedBitmap(PassedImage, 100));

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这听起来像是你的代码。但它适用于方形和矩形位图。试试这个

public static Bitmap getRoundedBitmap(Bitmap bitmap, int cornerRadius) {

        if (bitmap == null) {
            return null;
        }
        if (cornerRadius < 0) {
            cornerRadius = 0;
        }
        // Create plain bitmap
        Bitmap canvasBitmap = Bitmap.createBitmap(bitmap.getWidth(),
                bitmap.getHeight(), Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(canvasBitmap);
        canvas.drawARGB(0,0,0,0);
        Paint paint = new Paint();
        paint.setAntiAlias(true);
        paint.setColor(Color.WHITE);

        Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
        RectF rectF = new RectF(rect);

        canvas.drawRoundRect(rectF, cornerRadius, cornerRadius, paint);

        final int width = bitmap.getWidth();
        final int height = bitmap.getHeight();

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

        return canvasBitmap;
    }

公共静态位图getRoundedBitmap（位图位图，int-cornerRadius）{
如果（位图==null）{
返回null；
}
如果（转弯半径<0）{
转弯半径=0；
}
//创建普通位图
位图canvasBitmap=Bitmap.createBitmap（Bitmap.getWidth（），
bitmap.getHeight（），bitmap.Config.ARGB_8888）；
画布画布=新画布（画布位图）；
canvas.drawARGB（0,0,0,0）；
油漆=新油漆（）；
paint.setAntiAlias（真）；
油漆。设置颜色（颜色。白色）；
Rect Rect=new Rect（0,0，bitmap.getWidth（），bitmap.getHeight（））；
RectF RectF=新的RectF（rect）；
canvas.drawRoundRect（rectF、cornerRadius、cornerRadius、paint）；
final int width=bitmap.getWidth（）；
final int height=bitmap.getHeight（）；
setXfermode（新的PorterDuffXfermode（Mode.SRC_IN））；
绘制位图（位图、矩形、矩形、绘制）；
回访拉票；
}

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在非UI线程中执行此操作

，以便在onDraw（）方法中执行大型位图操作。不要那样做。。。在onDraw（）方法中创建对象是完全不可能的。你能在任何图像托管网站上发布你的示例位图并将该链接提供给我吗。。。