Android 安卓将网络图片保存到相册（已过时）

╰+攻爆jí腚メ 2023-07-14 10:32 11阅读 0赞

#  **2021年8月12日，该文章标注为已过时，标注原因：需要适配Android10、11、文章暂未更新!** #

## Android 安卓将网络图片保存到相册 ##

封装了一个工具类！

**请先加上读写权限:**

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

**如果是Android6.0之后，加上权限后再动态申请权限**

if (Build.VERSION.SDK_INT > Build.VERSION_CODES.LOLLIPOP) { 
    	if (ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) { 
    		ActivityCompat.requestPermissions(this, new String[]{ Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
    	}
    }

--------------------

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：

/** * @author ThirdGoddess * @email ofmyhub@gmail.com * @Github https://github.com/ThirdGoddess * @date :2020-03-14 10:11 */
    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;
    
        /** * 保存图片，无须自定义名字 * * @param context * @param photoUrl */
        public static void savePhoto(Context context, String photoUrl) { 
            contexts = context;
            photoUrls = photoUrl;
            new Thread(saveFileRunnable).start();
        }
    
        /** * 定义图片名字保存到相册 * * @param context * @param photoUrl * @param photoName 图片名字，定义格式 name.jpg/name.png/... */
        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());
            }
        };
    
        /** * 保存成功和失败通知 */
        @SuppressLint("HandlerLeak")
        private static Handler messageHandler = new Handler() { 
            @Override
            public void handleMessage(Message msg) { 
                Toast.makeText(contexts, mSaveMessage, Toast.LENGTH_SHORT).show();
            }
        };
    
        /** * 保存图片 * * @param bm * @throws IOException */
        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);
        }
    
        /** * 保存图片 * * @param bm * @param photoName 图片命名 * @throws IOException */
        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);
        }
    }