android.os.Environment.getDataDirectory()方法的使用及代码示例

x33g5p2x  于2022-01-18 转载在 其他  
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本文整理了Java中android.os.Environment.getDataDirectory()方法的一些代码示例，展示了Environment.getDataDirectory()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Environment.getDataDirectory()方法的具体详情如下：
包路径：android.os.Environment
类名称：Environment
方法名：getDataDirectory

Environment.getDataDirectory介绍

暂无

代码示例

代码示例来源：origin: zaaach/CityPicker

  1. public DBManager(Context context) {
  2.   this.mContext = context;
  3.   DB_PATH = File.separator + "data"
  4.       + Environment.getDataDirectory().getAbsolutePath() + File.separator
  5.       + context.getPackageName() + File.separator + "databases" + File.separator;
  6.   copyDBFile();
  7. }

代码示例来源：origin: JZ-Darkal/AndroidHttpCapture

  1. /**
  2.  * 获取外部存储目录，一般是/sdcard/ 如果不存在，就返回/data/
  3.  */
  4. public static File getDataRoot() {
  5.   try {
  6.     if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED) ||
  7.         (Environment.getExternalStorageDirectory().exists() && Environment.getExternalStorageDirectory().canWrite())) {
  8.       return Environment.getExternalStorageDirectory();
  9.     } else {
  10.       return Environment.getDataDirectory();
  11.     }
  12.   } catch (Exception e) {
  13.     return null;
  14.   }
  15. }

代码示例来源：origin: TommyLemon/APIJSON

  1. private static CityDB openCityDB(Context context, String packageName) {
  2.   String path = "/data"
  3.       + Environment.getDataDirectory().getAbsolutePath()
  4.       + File.separator + packageName + File.separator
  5.       + CityDB.CITY_DB_NAME;
  6.   File db = new File(path);
  7.   if (!db.exists()) {
  8.     try {
  9.       InputStream is = context.getAssets().open("city.db");
  10.       FileOutputStream fos = new FileOutputStream(db);
  11.       int len = -1;
  12.       byte[] buffer = new byte[1024];
  13.       while ((len = is.read(buffer)) != -1) {
  14.         fos.write(buffer, 0, len);
  15.         fos.flush();
  16.       }
  17.       fos.close();
  18.       is.close();
  19.     } catch (IOException e) {
  20.       e.printStackTrace();
  21.       System.exit(0);
  22.     }
  23.   }
  24.   return new CityDB(context, path);
  25. }

代码示例来源：origin: jgilfelt/chuck

  1. private static String extractDatabase(Context context) {
  2.   try {
  3.     File external = context.getExternalFilesDir(null);
  4.     File data = Environment.getDataDirectory();
  5.     if (external != null && external.canWrite()) {
  6.       String dataDBPath = "data/" + context.getPackageName() + "/databases/chuck.db";
  7.       String extractDBPath = "chuckdb.temp";
  8.       File dataDB = new File(data, dataDBPath);
  9.       File extractDB = new File(external, extractDBPath);
  10.       if (dataDB.exists()) {
  11.         FileChannel in = new FileInputStream(dataDB).getChannel();
  12.         FileChannel out = new FileOutputStream(extractDB).getChannel();
  13.         out.transferFrom(in, 0, in.size());
  14.         in.close();
  15.         out.close();
  16.         return extractDB.getAbsolutePath();
  17.       }
  18.     }
  19.   } catch (Exception e) {
  20.     e.printStackTrace();
  21.   }
  22.   return null;
  23. }

代码示例来源：origin: TommyLemon/Android-ZBLibrary

  1. private static CityDB openCityDB(Context context, String packageName) {
  2.   String path = "/data"
  3.       + Environment.getDataDirectory().getAbsolutePath()
  4.       + File.separator + packageName + File.separator
  5.       + CityDB.CITY_DB_NAME;
  6.   File db = new File(path);
  7.   if (!db.exists()) {
  8.     try {
  9.       InputStream is = context.getAssets().open("city.db");
  10.       FileOutputStream fos = new FileOutputStream(db);
  11.       int len = -1;
  12.       byte[] buffer = new byte[1024];
  13.       while ((len = is.read(buffer)) != -1) {
  14.         fos.write(buffer, 0, len);
  15.         fos.flush();
  16.       }
  17.       fos.close();
  18.       is.close();
  19.     } catch (IOException e) {
  20.       e.printStackTrace();
  21.       System.exit(0);
  22.     }
  23.   }
  24.   return new CityDB(context, path);
  25. }

代码示例来源：origin: jeasonlzy/ImagePicker

  1. if (takePictureIntent.resolveActivity(activity.getPackageManager()) != null) {
  2.   if (Utils.existSDCard()) takeImageFile = new File(Environment.getExternalStorageDirectory(), "/DCIM/camera/");
  3.   else takeImageFile = Environment.getDataDirectory();
  4.   takeImageFile = createFile(takeImageFile, "IMG_", ".jpg");
  5.   if (takeImageFile != null) {

代码示例来源：origin: joyoyao/superCleanMaster

  1. @Override
  2. protected Long doInBackground(Void... params) {
  3.   final CountDownLatch countDownLatch = new CountDownLatch(1);
  4.   StatFs stat = new StatFs(Environment.getDataDirectory().getAbsolutePath());
  5.   try {
  6.     mFreeStorageAndNotifyMethod.invoke(getPackageManager(),
  7.         (long) stat.getBlockCount() * (long) stat.getBlockSize(),
  8.         new IPackageDataObserver.Stub() {
  9.           @Override
  10.           public void onRemoveCompleted(String packageName, boolean succeeded)
  11.               throws RemoteException {
  12.             countDownLatch.countDown();
  13.           }
  14.         }
  15.     );
  16.     countDownLatch.await();
  17.   } catch (InvocationTargetException | InterruptedException | IllegalAccessException e) {
  18.     e.printStackTrace();
  19.   }
  20.   return mCacheSize;
  21. }

代码示例来源：origin: HotBitmapGG/bilibili-android-client

  1. /**
  2.  * 获取手机内部存储总空间
  3.  */
  4. public static long getPhoneTotalSize() {
  5.   if (!checkSdCard()) {
  6.     File path = Environment.getDataDirectory();
  7.     StatFs mStatFs = new StatFs(path.getPath());
  8.     long blockSizeLong = mStatFs.getBlockSizeLong();
  9.     long blockCountLong = mStatFs.getBlockCountLong();
  10.     return blockSizeLong * blockCountLong;
  11.   } else {
  12.     return getSDcardTotalSize();
  13.   }
  14. }

代码示例来源：origin: Rukey7/MvpApp

  1. @Deprecated
  2. public static boolean checkRomSpaceEnough(long limitSize) {
  3.   long allSize;
  4.   long availableSize = 0;
  5.   try {
  6.     File data = Environment.getDataDirectory();
  7.     StatFs sf = new StatFs(data.getPath());
  8.     availableSize = (long) sf.getAvailableBlocks() * (long) sf.getBlockSize();
  9.     allSize = (long) sf.getBlockCount() * (long) sf.getBlockSize();
  10.   } catch (Exception e) {
  11.     allSize = 0;
  12.   }
  13.   if (allSize != 0 && availableSize > limitSize) {
  14.     return true;
  15.   }
  16.   return false;
  17. }

代码示例来源：origin: HotBitmapGG/bilibili-android-client

  1. /**
  2.    * 获取手机内存存储可用空间
  3.    */
  4.   public static long getPhoneAvailableSize() {
  5.     if (!checkSdCard()) {
  6.       File path = Environment.getDataDirectory();
  7.       StatFs mStatFs = new StatFs(path.getPath());
  8.       long blockSizeLong = mStatFs.getBlockSizeLong();
  9.       long availableBlocksLong = mStatFs.getAvailableBlocksLong();
  10.       return blockSizeLong * availableBlocksLong;
  11.     } else
  12.       return getSDcardAvailableSize();
  13.   }
  14. }

代码示例来源：origin: joyoyao/superCleanMaster

  1. public static SDCardInfo getSystemSpaceInfo(Context context) {
  2.   File path = Environment.getDataDirectory();
  3.   // File path = context.getCacheDir().getAbsoluteFile();
  4.   StatFs stat = new StatFs(path.getPath());
  5.   long blockSize = stat.getBlockSize();
  6.   long totalBlocks = stat.getBlockCount();
  7.   long availableBlocks = stat.getAvailableBlocks();
  8.   long totalSize = blockSize * totalBlocks;
  9.   long availSize = availableBlocks * blockSize;
  10.   SDCardInfo info = new SDCardInfo();
  11.   info.total = totalSize;
  12.   info.free = availSize;
  13.   return info;
  14. }

代码示例来源：origin: ACRA/acra

  1. /**
  2.  * Calculates the total memory of the device. This is based on an inspection of the filesystem, which in android devices is stored in RAM.
  3.  *
  4.  * @return Total number of bytes.
  5.  */
  6. private long getTotalInternalMemorySize() {
  7.   final File path = Environment.getDataDirectory();
  8.   final StatFs stat = new StatFs(path.getPath());
  9.   final long blockSize;
  10.   final long totalBlocks;
  11.   if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
  12.     blockSize = stat.getBlockSizeLong();
  13.     totalBlocks = stat.getBlockCountLong();
  14.   } else {
  15.     //noinspection deprecation
  16.     blockSize = stat.getBlockSize();
  17.     //noinspection deprecation
  18.     totalBlocks = stat.getBlockCount();
  19.   }
  20.   return totalBlocks * blockSize;
  21. }

代码示例来源：origin: ACRA/acra

  1. /**
  2.  * Calculates the free memory of the device. This is based on an inspection of the filesystem, which in android
  3.  * devices is stored in RAM.
  4.  *
  5.  * @return Number of bytes available.
  6.  */
  7. private long getAvailableInternalMemorySize() {
  8.   final File path = Environment.getDataDirectory();
  9.   final StatFs stat = new StatFs(path.getPath());
  10.   final long blockSize;
  11.   final long availableBlocks;
  12.   if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
  13.     blockSize = stat.getBlockSizeLong();
  14.     availableBlocks = stat.getAvailableBlocksLong();
  15.   } else {
  16.     //noinspection deprecation
  17.     blockSize = stat.getBlockSize();
  18.     //noinspection deprecation
  19.     availableBlocks = stat.getAvailableBlocks();
  20.   }
  21.   return availableBlocks * blockSize;
  22. }

代码示例来源：origin: kingthy/TVRemoteIME

  1. public static String getRootFilePath() {
  2.   if (hasSDCard()) {
  3.     return Environment.getExternalStorageDirectory().getAbsolutePath() + "/";// filePath:/sdcard/
  4.   } else {
  5.     return Environment.getDataDirectory().getAbsolutePath() + "/data/"; // filePath:
  6.                                       // /data/data/
  7.   }
  8. }

代码示例来源：origin: jingle1267/android-utils

  1. String sourceFilePath = Environment.getDataDirectory() + "/data/"
  2.     + context.getPackageName() + "/databases/" + databaseName;
  3. String destFilePath = Environment.getExternalStorageDirectory()

代码示例来源：origin: smuyyh/SprintNBA

  1. /**
  2.  * 获取Android数据目录
  3.  *
  4.  * @return
  5.  */
  6. public static String getDataPath() {
  7.   return Environment.getDataDirectory().getPath();
  8. }

代码示例来源：origin: ittianyu/MobileGuard

  1. /**
  2.  * get the rom free space
  3.  *
  4.  * @return the byte of free space
  5.  */
  6. public static long getRomFreeSpace() {
  7.   File directory = Environment.getDataDirectory();
  8.   return directory.getFreeSpace();
  9. }

代码示例来源：origin: Odoo-mobile/framework

  1. public String databaseLocalPath() {
  2.   App app = (App) mContext.getApplicationContext();
  3.   return Environment.getDataDirectory().getPath() +
  4.       "/data/" + app.getPackageName() + "/databases/" + getDatabaseName();
  5. }

代码示例来源：origin: marzika/Snapprefs

  1. @SuppressWarnings("deprecation")
  2. public void onCreate(Bundle savedInstanceState) {
  3.   super.onCreate(savedInstanceState);
  4.   getPreferenceManager().setSharedPreferencesMode(Context.MODE_WORLD_READABLE);
  5.   addPreferencesFromResource(preferenceId);
  6.   File prefsFile = new File(
  7.       Environment.getDataDirectory(), "data/"
  8.       + BaseSettings.class.getPackage().getName() + "/shared_prefs/" + BaseSettings.class.getPackage().getName()
  9.       + "_preferences" + ".xml");
  10.   if( prefsFile.exists())
  11.     prefsFile.setReadable(true, false);
  12. }

代码示例来源：origin: ManbangGroup/Phantom

  1. /**
  2.  * 上报内部存储可用的磁盘空间
  3.  */
  4. public static void reportUsableSpaceMegabytes() {
  5.   final long usableSpaceMegabytes = Environment.getDataDirectory().getUsableSpace() / 1024 / 1024;
  6.   reportLog("usableSpace MB: " + usableSpaceMegabytes);
  7. }

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