Android圆形图片控件RoundedImageView

首先，感谢大家的每一次点击，这是对我的最大的支持，我会继续努力。

情景：徒弟说用到了原型的Image控件，有两种实现方式，一种采用FrameLayout帧布局，上层遮盖，但布局繁琐。

第二种，采用自定义布局，基于ImageView，下面就直接上代码

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);

}
//生成圆角Bitmap
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;
}

}

使用：xml布局：

<com.encount.tools.RoundedImageView <!--所在的包名.RoundedImageView-->
android:id="@+id/headImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="25.0dip"
android:adjustViewBounds="true"
android:maxHeight="80dip"
android:maxWidth="80dip"
android:src="@drawable/user_photo" />

效果图：



鸣谢：再次感谢大家支持！