Example usage for android.os Environment getExternalStorageState

List of usage examples for android.os Environment getExternalStorageState

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Introduction

In this page you can find the example usage for android.os Environment getExternalStorageState.

Prototype

public static String getExternalStorageState()

Source Link

Document

Returns the current state of the primary shared/external storage media.

Usage

From source file:Main.java

public static File[] getMountedVolumesAsFile() {
    final String state = Environment.getExternalStorageState();
    if (Environment.MEDIA_MOUNTED.equals(state) || Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) { // we can read the External Storage...           
        //Retrieve the primary External Storage:
        final File primaryExternalStorage = Environment.getExternalStorageDirectory();

        //Retrieve the External Storages root directory:
        String externalStorageRootDir = null;
        if ((externalStorageRootDir = primaryExternalStorage.getParent()) == null) { // no parent...
            return (new File[] { primaryExternalStorage });
        } else {/*from w  w  w  . j a v  a  2s .co  m*/
            final File externalStorageRoot = new File(externalStorageRootDir);
            final File[] files = externalStorageRoot.listFiles(new FilenameFilter() {

                @Override
                public boolean accept(File dir, String filename) {
                    // TODO Auto-generated method stub

                    File file = new File(dir, filename);
                    if (file.isDirectory() && file.canRead() && file.canWrite() && !file.isHidden()) {
                        return true;
                    }
                    return false;
                }

            }); //.listFiles();
            List<File> data = new ArrayList<File>();

            for (final File file : files) {
                if (file.isDirectory() && file.canRead() && file.canWrite() && !file.isHidden()
                        && (files.length > 0)) { // it is a real directory (not a USB drive)...
                    if (file.toString().equals(primaryExternalStorage.toString()))
                        data.add(file);
                    else {
                        if (!file.toString().contains("usb") || !file.toString().contains("USB")) {
                            data.add(file);
                        }
                    }
                }
            }
            return data.toArray(new File[data.size()]);
        }
    } else {
        // we cannot read the External Storage..., return null
        return null;
    }
}

From source file:Main.java

public static File getDataDirectory(Context ctx) {
    File f;//from w w w  . j  av a 2 s .  c  om

    if (Environment.getExternalStorageState().equals("mounted")) {
        //Has SD Card mounted
        f = Environment.getExternalStorageDirectory();
    } else {
        ContextWrapper c = new ContextWrapper(ctx);

        f = c.getFilesDir();
    }

    return f;
}

From source file:Main.java

public static File getAppCacheFile(Context context) {
    File externalCacheDir;//from  ww  w . j  a v  a  2  s.  c o m
    if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())
            || !Environment.isExternalStorageRemovable()) {
        externalCacheDir = context.getExternalCacheDir();
        // context.getExternalCacheDir() maybe null
        if (externalCacheDir == null) {
            externalCacheDir = context.getCacheDir();
        }
    } else {
        externalCacheDir = context.getCacheDir();
    }
    return externalCacheDir;
}

From source file:Main.java

public static String getAppCachePath(Context context) {
    String cachePath;/*from  ww w.ja  v a 2 s  .c  o  m*/
    if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())
            || !Environment.isExternalStorageRemovable()) {
        File externalCacheDir = context.getExternalCacheDir();
        // context.getExternalCacheDir() maybe null
        if (externalCacheDir == null) {
            cachePath = context.getCacheDir().getPath();
        } else {
            cachePath = externalCacheDir.getPath();
        }
    } else {
        cachePath = context.getCacheDir().getPath();
    }
    return cachePath;
}

From source file:Main.java

public static boolean writeErrorLogToSDCard(String path, String errorLog) {
    if (!(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))) // check if SD card is mounted
        return false;

    File file;//from w  w  w. j  a  v a 2 s . c om
    file = new File(path);
    if (!file.exists()) {
        try {
            file.getParentFile().mkdirs();
            file.createNewFile();
        } catch (IOException ioe) {
            ioe.printStackTrace();
            return false;
        }
    }

    try {
        BufferedWriter writer = new BufferedWriter(new FileWriter(file, true)); //true means append to file
        writer.append(errorLog);
        writer.newLine();
        writer.append("-------------------------------"); // seperator
        writer.newLine();
        writer.close();
    } catch (IOException ioe) {
        ioe.printStackTrace();
        return false;
    }
    return true;
}

From source file:Main.java

public static boolean isExternalStorageWriteable() {
    boolean mExternalStorageAvailable = false;
    boolean mExternalStorageWriteable = false;
    String state = Environment.getExternalStorageState();

    if (Environment.MEDIA_MOUNTED.equals(state)) {
        // We can read and write the media
        mExternalStorageAvailable = mExternalStorageWriteable = true;
    } else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
        // We can only read the media
        mExternalStorageAvailable = true;
        mExternalStorageWriteable = false;
    } else {//from   w ww . j a  v  a 2s.  c  o m
        // Something else is wrong. It may be one of many other states, but all we need
        //  to know is we can neither read nor write
        mExternalStorageAvailable = mExternalStorageWriteable = false;
    }

    return mExternalStorageAvailable & mExternalStorageWriteable;
}

From source file:Main.java

public static File getDiskCacheDir(Context context, String uniqueName) {
    String cachePath;/*from  ww w .java2s.  c  om*/
    if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())
            || !Environment.isExternalStorageRemovable()) {
        cachePath = context.getExternalCacheDir().getPath();
    } else {
        cachePath = context.getCacheDir().getPath();
    }
    return new File(cachePath + File.separator + uniqueName);
}

From source file:Main.java

/**
 * Checks if external storage is available for read and write.
 * @return True if external storage is writable. False otherwise.
 *//* w w w. jav  a 2 s .  c o  m*/
public static boolean isExternalStorageMounted() {
    if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
        return true;
    }
    return false;
}

From source file:Main.java

private static boolean sdCardIsExit() {
    return Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);
}

From source file:Main.java

public static String[] getMountedVolumes() {
    final String state = Environment.getExternalStorageState();
    if (Environment.MEDIA_MOUNTED.equals(state) || Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) { // we can read the External Storage...           
        //Retrieve the primary External Storage:
        final File primaryExternalStorage = Environment.getExternalStorageDirectory();

        //Retrieve the External Storages root directory:
        String externalStorageRootDir = null;
        if ((externalStorageRootDir = primaryExternalStorage.getParent()) == null) { // no parent...
            return (new String[] { "ONLY A SINGLE VOLUME HAS BEEN DETECTED!",
                    (Environment.isExternalStorageRemovable() ? "(REMOVABLE SD-CARD)" : "(INTERNAL STORAGE)")
                            + " PRIMARY STORAGE: " + primaryExternalStorage });
        } else {//from w  w w  . j  a va 2 s.c o  m
            final File externalStorageRoot = new File(externalStorageRootDir);
            final File[] files = externalStorageRoot.listFiles(new FilenameFilter() {

                @Override
                public boolean accept(File dir, String filename) {
                    // TODO Auto-generated method stub

                    File file = new File(dir, filename);
                    if (file.isDirectory() && file.canRead() && file.canWrite() && !file.isHidden()) {
                        return true;
                    }
                    return false;
                }

            }); //.listFiles();
            List<String> data = new ArrayList<String>();
            if (files.length > 1) {
                data.add("MULTIPLE VOLUMES HAS BEEN DETECTED!");
                data.add("Enumerating detected volumes . . .");
            } else {
                data.add("ONLY A SINGLE VOLUME HAS BEEN DETECTED!");
            }

            for (final File file : files) {
                if (file.isDirectory() && file.canRead() && file.canWrite() && !file.isHidden()
                        && (files.length > 0)) { // it is a real directory (not a USB drive)...
                    if (file.toString().equals(primaryExternalStorage.toString()))
                        data.add((Environment.isExternalStorageRemovable() ? "(REMOVABLE SD-CARD)"
                                : "(INTERNAL Memory)") + " PRIMARY STORAGE: " + file.getAbsolutePath());
                    else {
                        data.add(((file.toString().contains("usb") || file.toString().contains("USB"))
                                ? "MOUNTED USB"
                                : "MOUNTED") + " STORAGE: " + file.getAbsolutePath());
                    }
                }
            }
            return data.toArray(new String[data.size()]);
        }
    } else {
        // we cannot read the External Storage..., return null
        return null;
    }

}