Android 获取手机Ram 和 Rom大小

项目场景：

     在设置模块，工模测试模块中，经常需要查看手机设备的配置信息，比如RAM 和 ROM大小，RAM 我们可以通过读取/proc/meminfo 表里面的信息获得， ROM可以通过计算获取精确的内存大小bit值，但是手机中实际显示的时候一般为 32GB， 64GB，128GB，这里就需要我们稍微变动一下，这里通过代码实现，如下：

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解决方案：

1. 获取Ram大小

    //RAM内存大小, 返回1GB/2GB/3GB/4GB/8G/16G
    public static String getTotalRam(){
        String path = "/proc/meminfo";
        String ramMemorySize = null;
        int totalRam = 0 ;
        try{
            FileReader fileReader = new FileReader(path);
            BufferedReader br = new BufferedReader(fileReader, 4096);
            ramMemorySize = ().split("\\s+")[1];
            ();
        }catch (Exception e){
            ();
        }
        if(ramMemorySize != null){
            totalRam = (int)((new Float((ramMemorySize) / (1024 * 1024)).doubleValue()));
        }

        return totalRam + "GB";
    }

2. 获取Rom大小

    //ROM内存大小，返回 64G/128G/256G/512G
    private static String getTotalRom() {
        File dataDir = ();
        StatFs stat = new StatFs(());
        long blockSize = ();
        long totalBlocks = ();
        long size = totalBlocks * blockSize;
        long GB = 1024 * 1024 * 1024;
        final long[] deviceRomMemoryMap = {2*GB, 4*GB, 8*GB, 16*GB, 32*GB, 64*GB, 128*GB, 256*GB, 512*GB, 1024*GB, 2048*GB};
        String[] displayRomSize = {"2GB","4GB","8GB","16GB","32GB","64GB","128GB","256GB","512GB","1024GB","2048GB"};
        int i;
        for(i = 0 ; i < ; i++) {
            if(size <= deviceRomMemoryMap[i]) {
                break;
            }
            if(i == ) {
                i--;
            }
        }
        return displayRomSize[i];
    }