Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import android.os.Environment;

import android.util.Log;

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import java.util.ArrayList;
import java.util.List;

public class Main {
    private static final String TAG = "DeviceInfoUtil";
    private static String exSdCardPath = "";

    public static String getExSdCardPath() {
        if ("".equals(exSdCardPath)) {
            ArrayList<String> paths = (ArrayList<String>) getExtSDCardPaths();
            if (paths.size() != 0) {
                exSdCardPath = paths.get(0) + "/";
            } else {
                exSdCardPath = null;
            }
        }

        return exSdCardPath;
    }

    public static List<String> getExtSDCardPaths() {
        List<String> paths = new ArrayList<String>();
        String extFileStatus = Environment.getExternalStorageState();
        File extFile = Environment.getExternalStorageDirectory();
        if (extFileStatus.endsWith(Environment.MEDIA_UNMOUNTED) && extFile.exists() && extFile.isDirectory()
                && extFile.canWrite()) {
            paths.add(extFile.getAbsolutePath());
        }
        try {
            // obtain executed result of command line code of 'mount', to judge
            // whether tfCard exists by the result
            Runtime runtime = Runtime.getRuntime();
            Process process = runtime.exec("mount");
            InputStream is = process.getInputStream();
            InputStreamReader isr = new InputStreamReader(is);
            BufferedReader br = new BufferedReader(isr);
            String line = null;
            int mountPathIndex = 1;
            while ((line = br.readLine()) != null) {
                // format of sdcard file system: vfat/fuse
                if ((!line.contains("fat") && !line.contains("fuse") && !line.contains("storage"))
                        || line.contains("secure") || line.contains("asec") || line.contains("firmware")
                        || line.contains("shell") || line.contains("obb") || line.contains("legacy")
                        || line.contains("data")) {
                    continue;
                }
                String[] parts = line.split(" ");
                int length = parts.length;
                if (mountPathIndex >= length) {
                    continue;
                }
                String mountPath = parts[mountPathIndex];
                if (!mountPath.contains("/") || mountPath.contains("data") || mountPath.contains("Data")) {
                    continue;
                }
                File mountRoot = new File(mountPath);
                if (!mountRoot.exists() || !mountRoot.isDirectory() || !mountRoot.canWrite()) {
                    continue;
                }
                boolean equalsToPrimarySD = mountPath.equals(extFile.getAbsolutePath());
                if (equalsToPrimarySD) {
                    continue;
                }
                paths.add(mountPath);
            }
        } catch (IOException e) {
            Log.e(TAG, "IOException:" + e.getMessage());
        }
        return paths;
    }
}