Android保存图片并显示系统图库

发表于 | 分类于 | 阅读次数： 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
/**
   * 0 保存失败；
   * 1 保存成功；
   * 2 已经存在
   */
  class SaveImageToGalleryTask extends AsyncTask<Objects, Objects, Integer> {
      @Override
      protected Integer doInBackground(Objects... params) {
          Bitmap bitmap = null;
        
          try {
            
              bitmap = Picasso.with(GirlImageDetailActivity.this).load("图片URL").get();
          } catch (IOException e) {
              e.printStackTrace();
          }
          if (bitmap == null) {
              return 0;
          }
          File appDir = new File(Environment.getExternalStorageDirectory(), "hua");
          if (!appDir.exists()) {
              appDir.mkdir();
          }
          final String fileName = "图片名字"+ ".png";
          File file = new File(appDir, fileName);
          if (file.exists()) {
              return 2;
          } else {
              try {
                  FileOutputStream fileOutputStream = new FileOutputStream(file);
                  bitmap.compress(Bitmap.CompressFormat.PNG, 100, fileOutputStream);
                  fileOutputStream.flush();
                  fileOutputStream.close();
                  // 其次把文件插入到系统图库
                  MediaStore.Images.Media.insertImage(GirlImageDetailActivity.this.getContentResolver(), file.getAbsolutePath(), fileName, null);
                  // 最后通知图库更新
                  Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://" + file.getAbsolutePath()));
                  sendBroadcast(intent);
                  return 1;
              } catch (Exception e) {
                  e.printStackTrace();
                  return 0;
              }
          }
      }
      @Override
      protected void onPostExecute(Integer integer) {
          super.onPostExecute(integer);
          switch (integer) {
              case 0:
                  Snackbar.make(detailLayout, "保存失败", Snackbar.LENGTH_SHORT).show();
                  break;
              case 1:
                  File appDir = new File(Environment.getExternalStorageDirectory(), "hua");
                  Snackbar.make(detailLayout, "成功保存至" + appDir.getAbsolutePath(), Snackbar.LENGTH_SHORT).show();
                  break;
              case 2:
                  Snackbar.make(detailLayout, "图片已经存在", Snackbar.LENGTH_SHORT).show();
                  break;
          }
      }
  }


联系作者

我的微信公众号：吴小龙同学，欢迎关注交流，公号回复关键字「1024」有惊喜哦。