android获取内置和外置SD卡路径

本文将介绍android真机环境下如何获取内置和外置SD卡路径。

测试环境：三星Note3，其他手机待测试。。。

所需权限（AndroidManifest.xml文件里）

获取路径代码（MainActivity.java文件）

package com.example.androidtest;import java.io.BufferedReader;import java.io.File;import java.io.InputStream;import java.io.InputStreamReader;import java.util.ArrayList;import java.util.List;import android.os.Bundle;import android.os.Environment;import android.app.Activity;import android.view.Menu;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);StringBuilder log = new StringBuilder();String inPath = getInnerSDCardPath();log.append("内置SD卡路径：" + inPath + "\r\n");List extPaths = getExtSDCardPath();for (String path : extPaths) {log.append("外置SD卡路径：" + path + "\r\n");}System.out.println(log.toString());}/** * 获取内置SD卡路径 * @return */public String getInnerSDCardPath() {          return Environment.getExternalStorageDirectory().getPath();      }/** * 获取外置SD卡路径 * @return应该就一条记录或空 */public List getExtSDCardPath(){List lResult = new ArrayList();try {Runtime rt = Runtime.getRuntime();Process proc = rt.exec("mount");InputStream is = proc.getInputStream();InputStreamReader isr = new InputStreamReader(is);BufferedReader br = new BufferedReader(isr);String line;while ((line = br.readLine()) != null) {if (line.contains("extSdCard")){String [] arr = line.split(" ");String path = arr[1];File file = new File(path);if (file.isDirectory()){lResult.add(path);}}}isr.close();} catch (Exception e) {}return lResult;}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.activity_main, menu);return true;}}

其中，line.contains("extSdCard")判断部分有待进一步验证！

打印结果：

1. 插入一张外置SD卡后

内置SD卡路径：/storage/emulated/0外置SD卡路径：/storage/extSdCard

2. 取出外置SD卡后

内置SD卡路径：/storage/emulated/0

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