获取手机内存大小

 1 private String getTotalMemory() {
 2         String str1 = "/proc/meminfo";// 系统内存信息文件
 3         String str2;
 4         String[] arrayOfString;
 5         long initial_memory = 0;
 6         try {
 7             FileReader localFileReader = new FileReader(str1);
 8             BufferedReader localBufferedReader = new BufferedReader(
 9                     localFileReader, 8192);
10             str2 = localBufferedReader.readLine();// 读取meminfo第一行，系统总内存大小
11 
12             arrayOfString = str2.split("\\s+");
13             for (String num : arrayOfString) {
14                 Log.i(str2, num + "\t");
15             }
16 
17             initial_memory = Integer.valueOf(arrayOfString[1]).intValue() * 1024;// 获得系统总内存，单位是KB，乘以1024转换为Byte
18             localBufferedReader.close();
19 
20         } catch (IOException e) {
21         }
22         return Formatter.formatFileSize(getBaseContext(), initial_memory);// Byte转换为KB或者MB，内存大小规格化
23     }