使用方法：
roundTools = new RoundTools()
Bitmap roundAlbum = roundTools
.toRoundBitmap(bitmap)
imgRoundAlbum
.setImageBitmap(roundAlbum)
代码实现：
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
/**
* Created by Hejingzhou on 2016/4/10.
*
* 圆形化图形工具类
*/
public class RoundTools {
public Bitmap
toRoundBitmap(Bitmap bitmap) {
int width = bitmap.getWidth();
int height = bitmap.getHeight();
float roundPx;
float left, top, right, bottom, dst_left, dst_top, dst_right, dst_bottom;
if (width <= height) {
roundPx = width /
2;
top =
0;
bottom = width;
left =
0;
right = width;
height = width;
dst_left =
0;
dst_top =
0;
dst_right = width;
dst_bottom = width;
}
else {
roundPx = height /
2;
float clip = (width - height) /
2;
left = clip;
right = width - clip;
top =
0;
bottom = height;
width = height;
dst_left =
0;
dst_top =
0;
dst_right = height;
dst_bottom = height;
}
Bitmap output = Bitmap.createBitmap(width,
height, Bitmap.Config.ARGB_8888);
Canvas canvas =
new Canvas(output);
final int color =
0xff424242;
final Paint paint =
new Paint();
final Rect src =
new Rect((
int) left, (
int) top, (
int) right, (
int) bottom);
final Rect dst =
new Rect((
int) dst_left, (
int) dst_top, (
int) dst_right, (
int) dst_bottom);
final RectF rectF =
new RectF(dst);
paint.setAntiAlias(
true);
canvas.drawARGB(
0,
0,
0,
0);
paint.setColor(color);
canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
paint.setXfermode(
new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
canvas.drawBitmap(bitmap, src, dst, paint);
return output;
}
}
是不是很简单~
转载请注明原文地址: https://ju.6miu.com/read-1312707.html
