自定义圆形ImageView-简单

布局

<com.libin.ziding.MyImageView1
        android:id="@+id/i_image"
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:src="@drawable/ph5"
        imagecontrol:border_inside_color="#bc0978"
        imagecontrol:border_outside_color="#ba3456"
        imagecontrol:border_thickness="1dp" />

自定义的圆形Imageview
三个构造方法必须写，不然，有可能会出错

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;  
    }  
}