查找适用于Android的SD卡路径

Question

My phone has its SD card path named as "/storage/external_SD"

But I hear different phone manufacturers name their paths differently. Like SD_card , externalMemory etc..

I am developing an app that opens the SD card contents when a filechooser is opened.

How can I set a path to open when different brands name their sd card paths differently ?

Answer 1

getExternalStorageDirectory ()将为您提供（通常）SD卡的路径，因此您可以在代码中使用它。

Answer 2

You are looking for the Environment class and its static method getExternalStorageDirectory .

Return the primary external storage directory.
...
In devices with multiple "external" storage directories, this directory represents the "primary" external storage that the user will interact with. Access to secondary storage is available through

Answer 3

Yes. Different manufacturer use different SDcard name like in Samsung Tab 3 its extsd, and other samsung devices use sdcard like this different manufacturer use different names.

I had the same requirement as you. so i have created a sample example for you from my project goto this link Android Directory chooser example which uses the androi-dirchooser library. This example detect the SDcard and list all the subfolders and it also detects if the device has morethan one SDcard.

Part of the code looks like this For full example goto the link Android Directory Chooser

Helper Methods

/**
* Returns the path to internal storage ex:- /storage/emulated/0
 *
* @return
 */
private String getInternalDirectoryPath() {
return Environment.getExternalStorageDirectory().getAbsolutePath();
 }

/**
 * Returns the SDcard storage path for samsung ex:- /storage/extSdCard
 *
 * @return
 */
    private String getSDcardDirectoryPath() {
    return System.getenv("SECONDARY_STORAGE");
    }

 mSdcardLayout.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View view) {
            String sdCardPath;
            /***
             * Null check because user may click on already selected buton before selecting the folder
             * And mSelectedDir may contain some wrong path like when user confirm dialog and swith back again
             */

            if (mSelectedDir != null && !mSelectedDir.getAbsolutePath().contains(System.getenv("SECONDARY_STORAGE"))) {
                mCurrentInternalPath = mSelectedDir.getAbsolutePath();
            } else {
                mCurrentInternalPath = getInternalDirectoryPath();
            }
            if (mCurrentSDcardPath != null) {
                sdCardPath = mCurrentSDcardPath;
            } else {
                sdCardPath = getSDcardDirectoryPath();
            }
            //When there is only one SDcard
            if (sdCardPath != null) {
                if (!sdCardPath.contains(":")) {
                    updateButtonColor(STORAGE_EXTERNAL);
                    File dir = new File(sdCardPath);
                    changeDirectory(dir);
                } else if (sdCardPath.contains(":")) {
                    //Multiple Sdcards show root folder and remove the Internal storage from that.
                    updateButtonColor(STORAGE_EXTERNAL);
                    File dir = new File("/storage");
                    changeDirectory(dir);
                }
            } else {
                //In some unknown scenario at least we can list the root folder
                updateButtonColor(STORAGE_EXTERNAL);
                File dir = new File("/storage");
                changeDirectory(dir);
            }


        }
    });