自定义控件---带边框的圆形图片

效果：

package com.zyh.cricleimageview;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Path;
import android.util.AttributeSet;
import android.widget.ImageView;

/**
 * 圆角图片
 * @author zyh
 */
public class CircleImageView extends ImageView {

	public CircleImageView(Context context) {
		super(context);
	}

	public CircleImageView(Context context, AttributeSet attrs) {
		super(context, attrs);
	}

	public CircleImageView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
	}

	private int bWidth = 10;// 边框宽度
	private int bColor = Color.WHITE;// 边框颜色

	/**
	 * 设置圆形图片的边框颜色
	 * @param color
	 */
	public void setBorderColor(int color) {
		bColor = color;
	}

	/**
	 * 设置圆形图片的边框宽度
	 * @param
	 */
	public void setBorderWidth(int width) {
		bWidth = width;
	}

	/**
	 * 设置圆形图片的边框宽度和颜色
	 * @param
	 */
	public void setBorderWidth(int width, int color) {
		bWidth = width;
		bColor = color;
	}

	@Override
	public void setImageBitmap(Bitmap bm) {

		int d = Math.min(bm.getWidth(), bm.getHeight());// 或得圆直径
		Bitmap dest = Bitmap.createBitmap(d, d, bm.getConfig());// 创建一个副本
		// 画边框
		Canvas c = new Canvas(dest);
		Paint paint = new Paint();
		paint.setColor(bColor); // 边框颜色
		paint.setAntiAlias(true);// 设置抗锯齿
		c.drawCircle(d / 2, d / 2, d / 2, paint);
		// 画圆
		Path path = new Path();
		path.addCircle(d / 2, d / 2, d / 2 - bWidth, Path.Direction.CW);
		c.clipPath(path); // 裁剪区域

		Matrix matrix = new Matrix();// 不缩放
		c.drawBitmap(bm, matrix, paint);// 把图画上去
		super.setImageBitmap(dest);
	}

}

使用 

public class MainActivity extends Activity {

	private CircleImageView iv;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		iv = (CircleImageView) findViewById(R.id.iv);
		iv.setBorderWidth(15, Color.BLUE);// 设置边框
		iv.setImageBitmap(BitmapFactory.decodeResource(getResources(), R.drawable.photo)); // 设置图片
	}
}