Android 版本10以下存储和 10以上外部存储的区别，不得不说安卓碎片化真TMD的恶心

安卓10以下存储：

 1   /**
 2      * 子线程中处理拷贝数据，耗时操作
 3      */
 4     private Thread thread = new Thread(new Runnable() {
 5         @Override
 6         public void run() {
 7             boolean isSDPresent = Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);
 8             if (isSDPresent) {
 9                 File sdCardDir = Environment.getExternalStorageDirectory();
10                 File myDir = new File(sdCardDir, "/double_ball/");//创建文件夹
11                 if (!myDir.exists()) {
12                     myDir.mkdir();
13                     System.out.println("~~~~~~~~~>>>>file path: " + myDir.getPath());
14                     AssetCopyUtils.copyAssetFileToSDCard(MainActivity.this, "ball.db", myDir.getAbsolutePath() + "/double.db", new AssetCopyUtils.ICopyProgressCallBack() {
15                         @Override
16                         public void onProgress(int progress) {
17                             if (progress == 100) {
18                                 mHandler.sendEmptyMessage(1001);
19                                 hideLoading();
20                             }
21                         }
22                     });
23                 } else {
24                     mHandler.sendEmptyMessage(1002);
25                     hideLoading();
26                 }
27             } else {
28                 mHandler.sendEmptyMessage(1003);
29                 hideLoading();
30             }
31         }
32     });

安卓10以上存储：

 1   private Thread newThread = new Thread(new Runnable() {
 2         @Override
 3         public void run() {
 4             String dirPath = getExternalCacheDir() + "/double_file/";
 5             File filePath = new File(dirPath + File.separator);
 6             System.out.println("~~~~~~~~~~~path:" + filePath.getAbsolutePath());
 7             if (!filePath.exists()) {
 8                 filePath.mkdir();
 9                 AssetCopyUtils.copyAssetFileToSDCard(MainActivity.this, "ball.db", filePath.getAbsolutePath() + "/double.db", new AssetCopyUtils.ICopyProgressCallBack() {
10                     @Override
11                     public void onProgress(int progress) {
12                         if (progress == 100) {
13                             mHandler.sendEmptyMessage(1001);
14                             hideLoading();
15                         }
16                     }
17                 });
18             } else {
19                 mHandler.sendEmptyMessage(1002);
20                 hideLoading();
21             }
22         }
23     });

【调用】

 1   @Override
 2             public void onClick(View v) {
 3                 boolean isHas = PermissionUtil.checkPermission(MainActivity.this, PERMISSION_STORAGE, PERMISSION_STORAGE_CODE);
 4                 if (isHas) {
 5                     showLoading("服务端数据同步中...");
 6                     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
 7                         newThread.start();
 8                     } else {
 9                         thread.start();
10                     }
11                 } else {
12                     ToastUtil.getInstance().showToast("您还没有权限哦!");
13                 }
14             }

 

posted @ 2024-05-27 11:20  逍遥散人95  阅读(16)  评论(0)  编辑  收藏  举报