package com.example.hangliao.oneyuanrecharge.helper;

import android.graphics.Bitmap;

import android.graphics.Bitmap.Config;

import android.graphics.BitmapFactory;

import android.graphics.Canvas;

import android.graphics.Matrix;

import android.graphics.Paint;

import android.graphics.PorterDuff.Mode;

import android.graphics.PorterDuffXfermode;

import android.graphics.Rect;

import android.graphics.RectF;

import android.os.Handler;

import android.os.Message;

import android.widget.ImageView;

import java.io.InputStream;

import java.net.HttpURLConnection;

import java.net.URL;

public class ImageViewLoadAndSetSizeAndCircle {

    private PicHandler pic_hdl;

    private ImageView imgView;

    private String url;

    private  int widht;

    private  int height;

    private int CircleSize;

    /**

     * 通过图片url路径获取图片并显示到对应控件上

     *

     * @param imgView

     * @param url

     */

    public void setImage(ImageView imgView, String url,int widht,int height,int CircleSize) {

        this.url = url;

        this.imgView = imgView;

        this.widht=widht;

        this.height=height;

        this.CircleSize=CircleSize;

        pic_hdl = new PicHandler();

        Thread t = new LoadPicThread();

        t.start();

    }

    class LoadPicThread extends Thread {

        @Override

        public void run() {

            Bitmap img = getUrlImage(url);

            System.out.println(img + "---");

            Message msg = pic_hdl.obtainMessage();

            msg.what = 0;

            msg.obj = img;

            pic_hdl.sendMessage(msg);

        }

    }

    class PicHandler extends Handler {

        @Override

        public void handleMessage(Message msg) {

            Bitmap myimg = (Bitmap) msg.obj;

            imgView.setImageBitmap(myimg);

        }

    }

    public Bitmap getUrlImage(String url) {

        Bitmap img = null;

        try {

            URL picurl = new URL(url);

            HttpURLConnection conn = (HttpURLConnection) picurl

                    .openConnection();

            conn.setConnectTimeout(6000);

            conn.setDoInput(true);

            conn.setUseCaches(false);

            conn.connect();

            InputStream is = conn.getInputStream();

            img = BitmapFactory.decodeStream(is);

            is.close();

        } catch (Exception e) {

            e.printStackTrace();

        }

        img=zoomImage(img,this.widht,this.height);

        return img;

    }

    public   Bitmap zoomImage(Bitmap bgimage, double newWidth,

                                   double newHeight) {

        // 获取这个图片的宽和高

        float width = bgimage.getWidth();

        float height = bgimage.getHeight();

        // 创建操作图片用的matrix对象

        Matrix matrix = new Matrix();

        // 计算宽高缩放率

        float scaleWidth = ((float) newWidth) / width;

        float scaleHeight = ((float) newHeight) / height;

        // 缩放图片动作

        matrix.postScale(scaleWidth, scaleHeight);

        Bitmap bitmap = Bitmap.createBitmap(bgimage, 0, 0, (int) width,

                (int) height, matrix, true);

        if (CircleSize>0) //需要圆角

        {

            bitmap=bitmapRound(bitmap,CircleSize);

        }

        else  //不需要圆角

        {

        }

        return bitmap;

    }

    private Bitmap bitmapRound(Bitmap mBitmap,float CircleSize){

        Bitmap bitmap = Bitmap.createBitmap(mBitmap.getWidth(), mBitmap.getHeight(), Config.ARGB_4444);

        Canvas canvas = new Canvas(bitmap);

        Paint paint = new Paint();

        paint.setAntiAlias(true);

        //设置矩形大小

        Rect rect = new Rect(0,0,mBitmap.getWidth(),mBitmap.getHeight());

        RectF rectf = new RectF(rect);

        // 相当于清屏

        canvas.drawARGB(0, 0, 0, 0);

        //画圆角

        canvas.drawRoundRect(rectf, CircleSize, CircleSize, paint);

        // 取两层绘制，显示上层

        paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));

        // 把原生的图片放到这个画布上，使之带有画布的效果

        canvas.drawBitmap(mBitmap, rect, rect, paint);

        return bitmap;

    }

}

                 ImageView headerImage = ( ImageView ) convertView.findViewById(R.id.headerImage);

                 /*

                 *   下面方法参数说明:

                 *               1=加载图片的ImageView

                 *               2=图片下载地址

                 *               3=动态设置的图片宽度

                 *               4=动态设置的图片高度

                 *               5=圆角尺寸，这里如果不圆角参数填0

                 *

                 *

                 * */

                 new ImageViewLoadAndSetSizeAndCircle().setImage(headerImage,"http://www.taopic.com/uploads/allimg/110928/41-11092PSF482.jpg",70,70,35);

http://download.csdn.net/detail/liaohang1987x/9726728