自定义圆形头像

来源：互联网发布：老版本知乎2.4.4 编辑：程序博客网时间：2024/05/19 13:44
MyImageView1.class
public class MyImageView1 extends ImageView {    private Paint paint;    public MyImageView1(Context context) {        this(context, null);    }    public MyImageView1(Context context, AttributeSet attrs) {        this(context, attrs, 0);    }    public MyImageView1(Context context, AttributeSet attrs, int defStyle) {        super(context, attrs, defStyle);        paint = new Paint();    }    /**     * * 绘制圆形图片     *      * @author caizhiming     */    @Override      protected void onDraw(Canvas canvas) {          Drawable drawable = getDrawable();          if (drawable == null) {              return;          }          if (getWidth() == 0 || getHeight() == 0) {              return;           }          Bitmap b =  ((BitmapDrawable)drawable).getBitmap();          if(null == b)          {              return;          }          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 static 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;      }  }
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