ImageView的子类，使圆角右角 [英] ImageView subclass to make Rounded Right Corner

问题描述

我试图采取这样的图片

和把它们变成图像右上方的1/4。下面的图片是什么，我需要一个例子。

*的更新：* 的

我把它（在某种程度上）工作，但缩放图像产生失真的量不能接受我的code似乎非常低效的。关于如何提高这个code或A可能更好的办法任何想法？

我继承凌空的NetworkImageView。

下面是我的code

 ＆LT; com.RoundedNetworkImageView
    机器人：ID =@ + ID / smallProductImage
    机器人：layout_width =56dp
    机器人：layout_height =56dp
    机器人：layout_centerVertical =真
    机器人：layout_margin =5DP
    机器人：adjustViewBounds =真
    机器人：背景=@机器人：彩色/白
    机器人：scaleType =fitCenter/＆GT;公共静态位图getCroppedBitmap（BMP位图，诠释半径）{
    位图sbmp;    如果（bmp.getWidth（）！=半径|| bmp.getHeight（）！=半径）{
        浮最小= Math.min（bmp.getWidth（），bmp.getHeight（））;
        浮动系数=最小/半径;
        sbmp = Bitmap.createScaledBitmap（BMP，（INT）（bmp.getWidth（）/因子），（INT）（bmp.getHeight（）/因子）
                假）;
    }其他{
        sbmp = BMP;
    }    位图输出= Bitmap.createBitmap（半径，半径，Config.ARGB_8888）;
    帆布帆布=新的Canvas（输出）;    最终诠释颜色= 0xffa19774;
    最终涂料粉刷=新的油漆（）;
    最终矩形矩形=新的Rect（0，0，半径，半径）;    paint.setAntiAlias​​（真）;
    paint.setFilterBitmap（真）;
    paint.setDither（真）;
    canvas.drawARGB（0，0，0，0）;
    paint.setColor（Color.parseColor（＃BAB399））;
    canvas.drawCircle（半径/ 2 + 0.7f，半径/ 2 + 0.7f，半径/ 2 + 0.1F，油漆）;
    paint.setXfermode（新PorterDuffXfermode（Mode.SRC_IN））;
    canvas.drawBitmap（sbmp，矩形，矩形，油漆）;    位图的位图= Bitmap.createBitmap（输出，output.getWidth（）/ 2，0，output.getWidth（）/ 2，
            output.getHeight（）/ 2）;
    位图scaledBmp = Bitmap.createScaledBitmap（位图，半径，半径，真正的）;    返回scaledBmp;
}
 

解决方案

如何对未来图书馆：

https://github.com/vinc3m1/RoundedImageView

I am trying to take an image like these

and turn them into the top right 1/4 of the image. The image below is an example of what I need.

*UPDATE: *

I have it (sort of) working, but scaling the image creates an unacceptable amount of distortion my code seems terribly inefficient. Any ideas on how to improve this code or a possible better approach?

I am subclassing Volley's NetworkImageView.

Here is my code

<com.RoundedNetworkImageView
    android:id="@+id/smallProductImage"
    android:layout_width="56dp"
    android:layout_height="56dp"
    android:layout_centerVertical="true"
    android:layout_margin="5dp"
    android:adjustViewBounds="true"
    android:background="@android:color/white "
    android:scaleType="fitCenter" />

public static Bitmap getCroppedBitmap(Bitmap bmp, int radius) {
    Bitmap sbmp;

    if (bmp.getWidth() != radius || bmp.getHeight() != radius) {
        float smallest = Math.min(bmp.getWidth(), bmp.getHeight());
        float factor = smallest / radius;
        sbmp = Bitmap.createScaledBitmap(bmp, (int) (bmp.getWidth() / factor), (int) (bmp.getHeight() / factor),
                false);
    } else {
        sbmp = bmp;
    }

    Bitmap output = Bitmap.createBitmap(radius, radius, Config.ARGB_8888);
    Canvas canvas = new Canvas(output);

    final int color = 0xffa19774;
    final Paint paint = new Paint();
    final Rect rect = new Rect(0, 0, radius, radius);

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

    Bitmap bitmap = Bitmap.createBitmap(output, output.getWidth() / 2, 0, output.getWidth() / 2,
            output.getHeight() / 2);
    Bitmap scaledBmp = Bitmap.createScaledBitmap(bitmap, radius, radius, true);

    return scaledBmp;
}

解决方案

How about the next library:

https://github.com/vinc3m1/RoundedImageView

?

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