Android 安卓将网络图片保存到相册

使用方法：

//示例1：保存网络图片
SaveNetPhotoUtils.savePhoto(this, "https://profile.csdnimg.cn/5/F/3/3_qq_40881680");
//示例2：保存网络图片并且给图片命名
SaveNetPhotoUtils.savePhoto(this, "Https://profile.csdnimg.cn/5/F/3/3_qq_40881680", "photoName.jpg");

该类所带工具：

SaveNetPhotoUtils.savePhoto(上下文, 网络图片url);
SaveNetPhotoUtils.savePhoto(上下文, 网络图片url, 图片名字 + 后缀);

工具类：

public class SaveNetPhotoUtils {
    private static Context contexts;
    private static String photoUrls;
    private static Bitmap bitmap;
    private static String mSaveMessage = "failed";
    //自定义名字
    private static String photoNames;
    
    public static void savePhoto(Context context, String photoUrl) {
        contexts = context;
        photoUrls = photoUrl;
        new Thread(saveFileRunnable).start();
    }
    
    public static void savePhoto(Context context, String photoUrl, String photoName) {
        contexts = context;
        photoUrls = photoUrl;
        photoNames = photoName;
        new Thread(saveFileRunnable2).start();
    }
    private static Runnable saveFileRunnable = new Runnable() {
        @Override
        public void run() {
            try {
                if (!TextUtils.isEmpty(photoUrls)) {
                    URL url = new URL(photoUrls);
                    InputStream inputStream = url.openStream();
                    bitmap = BitmapFactory.decodeStream(inputStream);
                    inputStream.close();
                }
                saveFile(bitmap);
                mSaveMessage = "success！";
            } catch (IOException e) {
                mSaveMessage = "failed";
                e.printStackTrace();
            } catch (Exception e) {
                e.printStackTrace();
            }
            messageHandler.sendMessage(messageHandler.obtainMessage());
        }
    };
    private static Runnable saveFileRunnable2 = new Runnable() {
        @Override
        public void run() {
            try {
                if (!TextUtils.isEmpty(photoUrls)) {
                    URL url = new URL(photoUrls);
                    InputStream inputStream = url.openStream();
                    bitmap = BitmapFactory.decodeStream(inputStream);
                    inputStream.close();
                }
                saveFile(bitmap, photoNames);
                mSaveMessage = "success！";
            } catch (IOException e) {
                mSaveMessage = "failed";
                e.printStackTrace();
            } catch (Exception e) {
                e.printStackTrace();
            }
            messageHandler.sendMessage(messageHandler.obtainMessage());
        }
    };
    
    @SuppressLint("HandlerLeak")
    private static Handler messageHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            Toast.makeText(contexts, mSaveMessage, Toast.LENGTH_SHORT).show();
        }
    };
    
    public static void saveFile(Bitmap bm) throws IOException {
        File dirFile = new File(Environment.getExternalStorageDirectory().getPath());
        if (!dirFile.exists()) {
            dirFile.mkdir();
        }
        //图片命名
        String fileName = UUID.randomUUID().toString() + ".jpg";
        File myCaptureFile = new File(Environment.getExternalStorageDirectory().getPath() + "/DCIM/Camera/" + fileName);
        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(myCaptureFile));
        bm.compress(Bitmap.CompressFORMat.JPEG, 80, bos);
        bos.flush();
        bos.close();
        //广播通知相册有图片更新
        Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
        Uri uri = Uri.fromFile(myCaptureFile);
        intent.setData(uri);
        contexts.sendBroadcast(intent);
    }
    
    public static void saveFile(Bitmap bm, String photoName) throws IOException {
        File dirFile = new File(Environment.getExternalStorageDirectory().getPath());
        if (!dirFile.exists()) {
            dirFile.mkdir();
        }
        //图片命名后保存到相册
        File myCaptureFile = new File(Environment.getExternalStorageDirectory().getPath() + "/DCIM/Camera/" + photoName);
        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(myCaptureFile));
        bm.compress(Bitmap.CompressFormat.JPEG, 80, bos);
        bos.flush();
        bos.close();
        //广播通知相册有图片更新
        Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
        Uri uri = Uri.fromFile(myCaptureFile);
        intent.setData(uri);
        contexts.sendBroadcast(intent);
    }
}