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Android中如何生成带圆角的Bitmap图片

有时候我们在开发Android应用时,会遇到圆角图片的问题,那么,我们如何在Android中用代码来生成圆角Bitmap图片呢?下面这段代码也许能够帮到你。该方法主要用到了drawRoundRect来画圆角矩形,然后通过drawBitmap......

有时候我们在开发Android应用时,会遇到圆角图片的问题,那么,我们如何在Android中用代码来生成圆角Bitmap图片呢?下面这段代码也许能够帮到你。

该方法主要用到了drawRoundRect来画圆角矩形,然后通过drawBitmap来画图片。

[代码] [Java]代码

//生成圆角图片

public static Bitmap GetRoundedCornerBitmap(Bitmap bitmap) {

try {

Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),

bitmap.getHeight(), Config.ARGB_8888);

Canvas canvas = new Canvas(output);

final Paint paint = new Paint();

final Rect rect = new Rect(0, 0, bitmap.getWidth(),

bitmap.getHeight());

final RectF rectF = new RectF(new Rect(0, 0, bitmap.getWidth(),

bitmap.getHeight()));

final float roundPx = 14;

paint.setAntiAlias(true);

canvas.drawARGB(0, 0, 0, 0);

paint.setColor(Color.BLACK);

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

paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));

final Rect src = new Rect(0, 0, bitmap.getWidth(),

bitmap.getHeight());

canvas.drawBitmap(bitmap, src, rect, paint);

return output;

} catch (Exception e) {

return bitmap;

}

}