自定义View，圆形头像

1. 效果图

2. xml中

<com.etoury.etoury.ui.view.CircleImgandroid:id="@+id/user_info_head_img"android:layout_width="120dp"android:layout_height="120dp"android:layout_centerInParent="true"android:src="@drawable/ic_user" > </com.etoury.etoury.ui.view.CircleImg>

3. 自定义view

CircleImg.java

package com.etoury.etoury.ui.view;import android.content.Context; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.PixelFormat; import android.graphics.PorterDuffXfermode; import android.graphics.Rect; import android.graphics.Bitmap.Config; import android.graphics.PorterDuff.Mode; import android.graphics.drawable.Drawable; import android.util.AttributeSet; import android.widget.ImageView;public class CircleImg extends ImageView{public CircleImg(Context context) {super(context);// TODO Auto-generated constructor stub }public CircleImg(Context context, AttributeSet attrs) {super(context, attrs);}public CircleImg(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);}@Overrideprotected void onDraw(Canvas canvas) {Drawable drawable = getDrawable();if (drawable == null) {return;}if (getWidth() == 0 || getHeight() == 0) {return;}int width = drawable.getIntrinsicWidth();int height = drawable.getIntrinsicHeight();Bitmap.Config config = drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888: Bitmap.Config.RGB_565;Bitmap b = Bitmap.createBitmap(width, height, config);// Bitmap b = ((BitmapDrawable) drawable).getBitmap();// 注意，下面三行代码要用到，否在在View或者surfaceview里的canvas.drawBitmap会看不到图Canvas can = new Canvas(b);drawable.setBounds(0, 0, width, height);drawable.draw(can);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);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;}}

转载于:https://www.cnblogs.com/520-1314/p/5028526.html

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