工具类BitMap 把网络URL图片转换成BitMap

代码不复杂，直接把完整代码贴上。

这次是用到很旧的HttpURLConnection，那为什麽会用这个，因为我本来想转回okhttp的，可实在没时间转，项目就已经做下去了，结果转不回来。

package com.paradise.electronic.eparadise2.util;
 
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
 
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
 
/**
 * Created by Administrator on 17-11-12.
 */
public class BitMap {
 
    // 饿汉式
    private static BitMap instance = new BitMap();
 
    private BitMap(){}
 
    public static BitMap getInstance(){
        return instance;
    }
 
    /*
    *    get image from network
    *    @param [String]imageURL
    *    @return [BitMap]image
    */
    public Bitmap returnBitMap(String url){
        URL myFileUrl = null;
        Bitmap bitmap = null;
        try {
            myFileUrl = new URL(url);
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
        try {
            HttpURLConnection conn = (HttpURLConnection) myFileUrl.openConnection();
            conn.setDoInput(true);
            conn.connect();
            InputStream is = conn.getInputStream();
            bitmap = BitmapFactory.decodeStream(is);
            is.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return bitmap;
    }
 
}