獲取手機總內存以及格式轉化

獲取手機總內存

public static long getmem_TOLAL() {
        long mTotal;
        // /proc/meminfo讀出的內核信息進行解釋
        String path = "/proc/meminfo";
        String content = null;
        BufferedReader br = null;
        try {
            br = new BufferedReader(new FileReader(path), 8);
            String line;
            if ((line = br.readLine()) != null) {
                content += line;
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (br != null) {
                try {
                    br.close();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
        // beginIndex
        int begin = content.indexOf(':');
        // endIndex
        int end = content.indexOf('k');
        // 截取字符串信息
        content = content.substring(begin + 1, end).trim();
        mTotal = Integer.parseInt(content);
        return mTotal;

    }

有個很方便的類可以直接把long類型的數據轉化爲 **MB

String s = Formatter.formatFileSize(Context context，long sizeBytes);
    參數：context ：Context to use to load the localized units
         sizeBytes ：size value to be formatted, in bytes