android存储卡路径的问题

Question

sd卡文件夹区分

Answer 1

试下下面的方法
public String getOutSDPath() {
String mount = new String(); try {
Runtime runtime = Runtime.getRuntime();
Process proc = runtime.exec("mount");
InputStream is = proc.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
String line; BufferedReader br = new BufferedReader(isr);
while ((line = br.readLine()) != null) {
if (line.contains("secure"))
continue;
if (line.contains("asec"))
continue; if (line.contains("fat")) {
String columns[] = line.split(" ");
if (columns != null && columns.length > 1) {
mount = mount.concat("*" + columns[1] + "\n");
}
} else if (line.contains("fuse")) {
String columns[] = line.split(" ");
if (columns != null && columns.length > 1) {
mount = mount.concat(columns[1] + "\n");
}
}
}
Log.i("外置SD卡或者USB设备路径", mount); } catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return mount;
}

Answer 2

代码如下：
public class MainActivity extends Activity {
        private final String TAG = "MainActivity";        @Override
        protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_main);
                TextView internalMemoryTextView = (TextView) findViewById(R.id.rom_left);
                TextView externalMemoryTextView = (TextView) findViewById(R.id.inside_sd_left);
                TextView sdCard2MemoryTextView = (TextView) findViewById(R.id.outside_sd_left);
                internalMemoryTextView.setText("rom left "
                                + getAvailableInternalMemorySize() + "MB");
                externalMemoryTextView.setText("rom left "
                                + getAvailableExternalMemorySize() + "MB");
                sdCard2MemoryTextView.setText("rom left "
                                + getAvailableSDCard2MemorySize() + "MB");        }        /**
         * 
         * @return ROM存储路径
         */
        private String getInternalMemoryPath() {
                return Environment.getDataDirectory().getPath();
        }        /**
         * 
         * @return 内置sd卡路径
         */
        private String getExternalMemoryPath() {
                // return Environment.getExternalStorageDirectory().getPath();
                return "/mnt/sdcard";
        }        /**
         * 
         * @return 外置sd卡路径
         */
        private String getSDCard2MemoryPath() {
                return "/mnt/sdcard1";
        }        /**
         * 
         * @param path
         *            文件路径
         * @return 文件路径的StatFs对象
         * @throws Exception
         *             路径为空或非法异常抛出
         */
        private StatFs getStatFs(String path) {
                try {
                        return new StatFs(path);
                } catch (Exception e) {
                        e.printStackTrace();
                }
                return null;
        }        /**
         * 
         * @param stat
         *            文件StatFs对象
         * @return 剩余存储空间的MB数
         * 
         */
        private float calculateSizeInMB(StatFs stat) {
                if (stat != null)
                        return stat.getAvailableBlocks()
                                        * (stat.getBlockSize() / (1024f * 1024f));
                return 0.0f;
        }        /**
         * 
         * @return ROM剩余存储空间的MB数
         */
        private float getAvailableInternalMemorySize() {                String path = getInternalMemoryPath();// 获取数据目录
                StatFs stat = getStatFs(path);
                return calculateSizeInMB(stat);
        }        /**
         * 
         * @return 内置SDCard剩余存储空间MB数
         */
        private float getAvailableExternalMemorySize() {                String path = getExternalMemoryPath();// 获取数据目录
                StatFs stat = getStatFs(path);
                return calculateSizeInMB(stat);        }        /**
         * 
         * @return 外置SDCard剩余存储空间MB数
         */
        private float getAvailableSDCard2MemorySize() {                // String status = Environment.getExternalStorageState();
                // if (status.equals(Environment.MEDIA_MOUNTED)) {
                // }
                String path = getSDCard2MemoryPath(); // 获取数据目录
                StatFs stat = getStatFs(path);
                return calculateSizeInMB(stat);        }