不廢話，直接上程式碼

1. import android.content.Context;  
2. import android.content.Intent;  
3. import android.graphics.Bitmap;  
4. import android.net.Uri;  
5. import com.baguanv.jinba.utils.Const;  
6. import com.bumptech.glide.Glide;  
7. import com.bumptech.glide.request.target.Target;  
8. import java.io.File;  
9. import java.io.FileNotFoundException;  
10. import java.io.FileOutputStream;  
11. import java.io.IOException;  
12. /** 
13.  * 圖片下載 
14.  *  
15.  */
16. publicclass DownLoadImageService implements Runnable {  
17.     private String url;  
18.     private Context context;  
19.     private ImageDownLoadCallBack callBack;  
20.     private File currentFile;  
21.     public DownLoadImageService(Context context, String url, ImageDownLoadCallBack callBack) {  
22.         this.url = url;  
23.         this.callBack = callBack;  
24.         this.context = context;  
25.     }  
26.     @Override
27.     publicvoid run() {  
28.         File file = null;  
29.         Bitmap bitmap = null;  
30.         try
     {  
31. //            file = Glide.with(context)
32. //                    .load(url)
33. //                    .downloadOnly(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL)
34. //                    .get();
35.             bitmap = Glide.with(context)  
36.                     .load(url)  
37.                     .asBitmap()  
38.                     .into(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL)  
39.                     .get();  
40.             if (bitmap != null){  
41.                 // 在這裡執行圖片儲存方法
42.                 saveImageToGallery(context,bitmap);  
43.             }  
44.         } catch (Exception e) {  
45.             e.printStackTrace();  
46.         } finally {  
47. //            if (file != null) {
48. //                callBack.onDownLoadSuccess(file);
49. //            } else {
50. //                callBack.onDownLoadFailed();
51. //            }
52.             if (bitmap != null && currentFile.exists()) {  
53.                 callBack.onDownLoadSuccess(bitmap);  
54.             } else {  
55.                 callBack.onDownLoadFailed();  
56.             }  
57.         }  
58.     }  
59.     publicvoid saveImageToGallery(Context context, Bitmap bmp) {  
60.         // 首先儲存圖片
61.         String File file = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).getAbsoluteFile();//注意小米手機必須這樣獲得public絕對路徑
62.         String fileName = ”新建資料夾”;  
63.        File appDir = new File(file ,fileName);  
64.         if (!appDir.exists()) {  
65.             appDir.mkdirs();  
66.         }  
67.         String fileName = System.currentTimeMillis() + ”.jpg”;  
68.         currentFile = new File(appDir, fileName);  
69.         FileOutputStream fos = null;  
70.         try {  
71.             fos = new FileOutputStream(currentFile);  
72.             bmp.compress(Bitmap.CompressFormat.JPEG, 100, fos);  
73.             fos.flush();  
74.         } catch (FileNotFoundException e) {  
75.             e.printStackTrace();  
76.         } catch (IOException e) {  
77.             e.printStackTrace();  
78.         } finally {  
79.             try {  
80.                 if (fos != null) {  
81.                     fos.close();  
82.                 }  
83.             } catch (IOException e) {  
84.                 e.printStackTrace();  
85.             }  
86.         }  
87.         // 其次把檔案插入到系統圖庫
88. //        try {
89. //            MediaStore.Images.Media.insertImage(context.getContentResolver(),
90. //                    currentFile.getAbsolutePath(), fileName, null);
91. //        } catch (FileNotFoundException e) {
92. //            e.printStackTrace();
93. //        }
94.         // 最後通知相簿更新
95.         context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE,  
96.                 Uri.fromFile(new File(currentFile.getPath()))));  
97.     }  
98. }  

import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;

import com.baguanv.jinba.utils.Const;
import com.bumptech.glide.Glide;
import com.bumptech.glide.request.target.Target;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * 圖片下載
 * 
 */
public class DownLoadImageService implements Runnable {
    private String url;
    private Context context;
    private ImageDownLoadCallBack callBack;
    private File currentFile;
    public DownLoadImageService(Context context, String url, ImageDownLoadCallBack callBack) {
        this.url = url;
        this.callBack = callBack;
        this.context = context;
    }

    @Override
    public void run() {
        File file = null;
        Bitmap bitmap = null;
        try {
//            file = Glide.with(context)
//                    .load(url)
//                    .downloadOnly(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL)
//                    .get();
            bitmap = Glide.with(context)
                    .load(url)
                    .asBitmap()
                    .into(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL)
                    .get();
            if (bitmap != null){
                // 在這裡執行圖片儲存方法
                saveImageToGallery(context,bitmap);
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
//            if (file != null) {
//                callBack.onDownLoadSuccess(file);
//            } else {
//                callBack.onDownLoadFailed();
//            }
            if (bitmap != null && currentFile.exists()) {
                callBack.onDownLoadSuccess(bitmap);
            } else {
                callBack.onDownLoadFailed();
            }
        }
    }

    public void saveImageToGallery(Context context, Bitmap bmp) {
        // 首先儲存圖片
        String File file = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).getAbsoluteFile();//注意小米手機必須這樣獲得public絕對路徑
        String fileName = "新建資料夾";
       File appDir = new File(file ,fileName);
        if (!appDir.exists()) {
            appDir.mkdirs();
        }
        String fileName = System.currentTimeMillis() + ".jpg";
        currentFile = new File(appDir, fileName);

        FileOutputStream fos = null;
        try {
            fos = new FileOutputStream(currentFile);
            bmp.compress(Bitmap.CompressFormat.JPEG, 100, fos);
            fos.flush();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (fos != null) {
                    fos.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        // 其次把檔案插入到系統圖庫
//        try {
//            MediaStore.Images.Media.insertImage(context.getContentResolver(),
//                    currentFile.getAbsolutePath(), fileName, null);
//        } catch (FileNotFoundException e) {
//            e.printStackTrace();
//        }

        // 最後通知相簿更新
        context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE,
                Uri.fromFile(new File(currentFile.getPath()))));
    }
}

1. publicinterface ImageDownLoadCallBack {  
2.     void onDownLoadSuccess(File file);  
3.     void onDownLoadSuccess(Bitmap bitmap);  
4.     void onDownLoadFailed();  
5. }  

public interface ImageDownLoadCallBack {
    void onDownLoadSuccess(File file);
    void onDownLoadSuccess(Bitmap bitmap);

    void onDownLoadFailed();
}

1. /** 
2.      * 啟動圖片下載執行緒 
3.      */
4.     privatevoid onDownLoad(String url) {  
5.         DownLoadImageService service = new DownLoadImageService(getApplicationContext(),  
6.                 url,  
7.                 new ImageDownLoadCallBack() {  
8.                     @Override
9.                     publicvoid onDownLoadSuccess(File file) {  
10.                     }  
11.                     @Override
12.                     publicvoid onDownLoadSuccess(Bitmap bitmap) {  
13.                         // 在這裡執行圖片儲存方法
14.                         Message message = new Message();  
15.                         message.what = MSG_VISIBLE;  
16.                         handler.sendMessageDelayed(message, delayTime);  
17.                     }  
18.                     @Override
19.                     publicvoid onDownLoadFailed() {  
20.                         // 圖片儲存失敗
21.                         Message message = new Message();  
22.                         message.what = MSG_ERROR;  
23.                         handler.sendMessageDelayed(message, delayTime);  
24.                     }  
25.                 });  
26.         //啟動圖片下載執行緒
27.         new Thread(service).start();  
28.     }  

/**
     * 啟動圖片下載執行緒
     */
    private void onDownLoad(String url) {
        DownLoadImageService service = new DownLoadImageService(getApplicationContext(),
                url,
                new ImageDownLoadCallBack() {

                    @Override
                    public void onDownLoadSuccess(File file) {
                    }
                    @Override
                    public void onDownLoadSuccess(Bitmap bitmap) {
                        // 在這裡執行圖片儲存方法
                        Message message = new Message();
                        message.what = MSG_VISIBLE;
                        handler.sendMessageDelayed(message, delayTime);
                    }

                    @Override
                    public void onDownLoadFailed() {
                        // 圖片儲存失敗
                        Message message = new Message();
                        message.what = MSG_ERROR;
                        handler.sendMessageDelayed(message, delayTime);
                    }
                });
        //啟動圖片下載執行緒
        new Thread(service).start();
    }