圆角布局和圆形ImageView

源码

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); }

 @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 = ImageEffect.getCroppedBitmap(bitmap, w);  canvas.drawBitmap(roundBitmap, 0, 0, null);

 }

}

</pre><pre class="java" name="code">

</pre><pre class="java" name="code">

</pre><pre class="java" name="code">public class ImageEffect {/** 水平方向模糊度 */private static float hRadius = 10;/** 竖直方向模糊度 */private static float vRadius = 10;/** 模糊迭代度 */private static int iterations = 7;/** * 高斯模糊 *  * @param bmp * @return */public static Bitmap BoxBlurFilter(Bitmap bmp) {int width = bmp.getWidth();int height = bmp.getHeight();int[] inPixels = new int[width * height];int[] outPixels = new int[width * height];Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);bmp.getPixels(inPixels, 0, width, 0, 0, width, height);for (int i = 0; i < iterations; i++) {blur(inPixels, outPixels, width, height, hRadius);blur(outPixels, inPixels, height, width, vRadius);}blurFractional(inPixels, outPixels, width, height, hRadius);blurFractional(outPixels, inPixels, height, width, vRadius);bitmap.setPixels(inPixels, 0, width, 0, 0, width, height);// Drawable drawable = new BitmapDrawable(bitmap);return bitmap;}public static void blur(int[] in, int[] out, int width, int height, float radius) {int widthMinus1 = width - 1;int r = (int) radius;int tableSize = 2 * r + 1;int divide[] = new int[256 * tableSize];for (int i = 0; i < 256 * tableSize; i++)divide[i] = i / tableSize;int inIndex = 0;for (int y = 0; y < height; y++) {int outIndex = y;int ta = 0, tr = 0, tg = 0, tb = 0;for (int i = -r; i <= r; i++) {int rgb = in[inIndex + clamp(i, 0, width - 1)];ta += (rgb >> 24) & 0xff;tr += (rgb >> 16) & 0xff;tg += (rgb >> 8) & 0xff;tb += rgb & 0xff;}for (int x = 0; x < width; x++) {out[outIndex] = (divide[ta] << 24) | (divide[tr] << 16) | (divide[tg] << 8) | divide[tb];int i1 = x + r + 1;if (i1 > widthMinus1)i1 = widthMinus1;int i2 = x - r;if (i2 < 0)i2 = 0;int rgb1 = in[inIndex + i1];int rgb2 = in[inIndex + i2];ta += ((rgb1 >> 24) & 0xff) - ((rgb2 >> 24) & 0xff);tr += ((rgb1 & 0xff0000) - (rgb2 & 0xff0000)) >> 16;tg += ((rgb1 & 0xff00) - (rgb2 & 0xff00)) >> 8;tb += (rgb1 & 0xff) - (rgb2 & 0xff);outIndex += height;}inIndex += width;}}public static void blurFractional(int[] in, int[] out, int width, int height, float radius) {radius -= (int) radius;float f = 1.0f / (1 + 2 * radius);int inIndex = 0;for (int y = 0; y < height; y++) {int outIndex = y;out[outIndex] = in[0];outIndex += height;for (int x = 1; x < width - 1; x++) {int i = inIndex + x;int rgb1 = in[i - 1];int rgb2 = in[i];int rgb3 = in[i + 1];int a1 = (rgb1 >> 24) & 0xff;int r1 = (rgb1 >> 16) & 0xff;int g1 = (rgb1 >> 8) & 0xff;int b1 = rgb1 & 0xff;int a2 = (rgb2 >> 24) & 0xff;int r2 = (rgb2 >> 16) & 0xff;int g2 = (rgb2 >> 8) & 0xff;int b2 = rgb2 & 0xff;int a3 = (rgb3 >> 24) & 0xff;int r3 = (rgb3 >> 16) & 0xff;int g3 = (rgb3 >> 8) & 0xff;int b3 = rgb3 & 0xff;a1 = a2 + (int) ((a1 + a3) * radius);r1 = r2 + (int) ((r1 + r3) * radius);g1 = g2 + (int) ((g1 + g3) * radius);b1 = b2 + (int) ((b1 + b3) * radius);a1 *= f;r1 *= f;g1 *= f;b1 *= f;out[outIndex] = (a1 << 24) | (r1 << 16) | (g1 << 8) | b1;outIndex += height;}out[outIndex] = in[width - 1];inIndex += width;}}public static int clamp(int x, int a, int b) {return (x < a) ? a : (x > b) ? b : x;}/** * 获取圆形图片 *  * @param bmp * @return * */public static Bitmap getCroppedBitmap(Bitmap bmp, int radius) {Bitmap sbmp;if (bmp.getWidth() != radius || bmp.getHeight() != radius)sbmp = Bitmap.createScaledBitmap(bmp, radius, radius, false);elsesbmp = 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;}}}

圆形ImageView2个类,直接xml引用即可

public class XCRoundRectImageView extends ImageView{    private Paint paint;        public XCRoundRectImageView(Context context) {          this(context,null);      }        public XCRoundRectImageView(Context context, AttributeSet attrs) {          this(context, attrs,0);      }        public XCRoundRectImageView(Context context, AttributeSet attrs, int defStyle) {          super(context, attrs, defStyle);         paint  = new Paint();       // paint.setColor(getResources().getColor(R.color.black));     }        /**     * 绘制圆角矩形图片     * @author caizhiming     */    @Override      protected void onDraw(Canvas canvas) {            Drawable drawable = getDrawable();          if (null != drawable) {              Bitmap bitmap = ((BitmapDrawable) drawable).getBitmap();              Bitmap b = getRoundBitmap(bitmap, 15);  //设置设置4个角的弧度            final Rect rectSrc = new Rect(0, 0, b.getWidth(), b.getHeight());              final Rect rectDest = new Rect(0,0,getWidth(),getHeight());            paint.reset();              canvas.drawBitmap(b, rectSrc, rectDest, paint);            } else {              super.onDraw(canvas);          }      }        /**     * 获取圆角矩形图片方法     * @param bitmap     * @param roundPx,一般设置成14     * @return Bitmap     * @author caizhiming     */    private Bitmap getRoundBitmap(Bitmap bitmap, int roundPx) {          Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),                  bitmap.getHeight(), Config.ARGB_8888);          Canvas canvas = new Canvas(output);                    final int color = 0xff424242;               final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());          final RectF rectF = new RectF(rect);        paint.setAntiAlias(true);          canvas.drawARGB(0, 0, 0, 0);          paint.setColor(color);          int x = bitmap.getWidth();                 canvas.drawRoundRect(rectF, roundPx, roundPx, paint);        paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));          canvas.drawBitmap(bitmap, rect, rect, paint);          return output;                      }  }