CODEWITHSUNDEEP
androidandroid-sdcard
Maximus
Maximus

Reputation: 285

Micro Sd card detection

Is there a way to detect a micro sd card in android? I know the Environment class gives external storage details. But it just gives the in built sd card details. Is there a way around?

Upvotes: 4

Views: 1087

Answers (3)

DroidlikeCode
DroidlikeCode

Reputation: 292

Environment.getExternalStorageState() and Environment.getExternalStorageDirectory() will provide the built-in SD card, which is almost existing on all currently Android devices now.

Two methods to get the "real" external SD card (or USB disk).

  1. Use the getVolumeList() function to list all removable storages, remember to check the mount state before you access it.

    private static String getExtendedMemoryPath(Context context) {
    StorageManager mStorageManager = (StorageManager) context.getSystemService(Context.STORAGE_SERVICE);
    Class<?> storageVolumeClazz = null;
    try {
        storageVolumeClazz = Class.forName("android.os.storage.StorageVolume");
        Method getVolumeList = mStorageManager.getClass().getMethod("getVolumeList");
        Method getPath = storageVolumeClazz.getMethod("getPath");
        Method isRemovable = storageVolumeClazz.getMethod("isRemovable");
        Object result = getVolumeList.invoke(mStorageManager);
        final int length = Array.getLength(result);
        for (int i = 0; i < length; i++) {
            Object storageVolumeElement = Array.get(result, i);
            String path = (String) getPath.invoke(storageVolumeElement);
            boolean removable = (Boolean) isRemovable.invoke(storageVolumeElement);
            if (removable) {
                return path;
            }
        }
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    } catch (InvocationTargetException e) {
        e.printStackTrace();
    } catch (NoSuchMethodException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    }
    return null;
}

  2. Register android.intent.action.MEDIA_MOUNTED event, when a storage is mounted, will broadcast this intent with the mounted disk path.

    <receiver android:enabled="true" android:name=".MountStatusReceiver">
        <intent-filter>
            <action android:name="android.intent.action.MEDIA_MOUNTED"/>
            <data android:scheme="file"/>
        </intent-filter>
    </receiver>

@Override
public void onReceive(Context context, Intent intent) {
    if (intent != null) {
            if (Intent.ACTION_MEDIA_MOUNTED.equals(intent.getAction())) {
                path = intent.getDataString().replace("file://", "");
            }
        }
    }
}

Upvotes: 0

SamSPICA
SamSPICA

Reputation: 1366

Try this:

boolean canSaveExternal = false;
String storageState = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(storageState))
    canSaveExternal = true;
else
    canSaveExternal = false;

Upvotes: 1

michel-slm
michel-slm

Reputation: 9756

You can use isExternalStorageEmulated() to find out if the current "external" storage is actually a real external storage or just part of the internal storage. If it's real then you should get the properties of the removable card.

Upvotes: 2

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