android获取外置SD卡的路径

最新推荐文章于 2021-02-17 03:43:03 发布

原创最新推荐文章于 2021-02-17 03:43:03 发布 · 770 阅读

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本文介绍了如何在Android设备上获取内置和外置SD卡的路径。对于内置SD卡，可以通过Environment.getExternalStorageDirectory().getName()获取。而外置SD卡路径可能有所不同，常见路径包括/mnt/sdcard、/mnt/extsd和/mnt/usbhost1*。

手机或平板，有内置SD卡和拓展的外置SD卡：

内置的路径为：

String sdcard_Path = Environment.getExternalStorageDirectory().getName();

外置的路径有点麻烦：

/**
	 * 外置SD卡的路径：exSd_Path
	 */
	public static String getDefaultExternalStoragePath() {
		String exSd_Path = "";
		String [] exPaths = new StorageList(MainActivity.contexts).getVolumePaths();
		if (exPaths.length > 1) {
			exSd_Path = exPaths[1];
		}
		return exSd_Path;
	}

/*/mnt/sdcard
/mnt/extsd
/mnt/usbhost1*/

public class StorageList {
	private Context mContext;
	private Method method;
	private StorageManager storageManager;

	@SuppressLint("InlinedApi")
	public StorageList(Context contexts) {
		mContext = contexts;
		if (mContext != null) {
			storageManager = (StorageManager) mContext.getSystemService(Context.STORAGE_SERVICE);
			try {
				method = storageManager.getClass().getMethod("getVolumePaths", new Class[0]);
			} catch (Exception e) {
			}
		}
	}

	public String[] getVolumePaths() {
		String[] paths = null;
		
		try {
			paths = (String[]) method.invoke(storageManager, new Object[0]);
		} catch (IllegalArgumentException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		} catch (InvocationTargetException e) {
			e.printStackTrace();
		}
		return paths;
	}


}