Android获取CPU信息(CPU名字和主频)

文章参照自： http://www.2cto.com/kf/201206/134236.html

在 Android 中，我们可以通过读取一些系统文件来获得手机的 cpu信息 (CPU 名字 和CPU 主频 )。

具体请参照实例1.

实例1

   
   
   
   

    
    
    
    package
    
    
    
     edu
    
    
    
    .
    
    
    
    cdut
    
    
    
    .
    
    
    
    robin
    
    
    
    ;


    
    
    
    import
    
    
    
     java
    
    
    
    .
    
    
    
    io
    
    
    
    .
    
    
    
    BufferedReader
    
    
    
    ;

    
    
    
    import
    
    
    
     java
    
    
    
    .
    
    
    
    io
    
    
    
    .
    
    
    
    FileNotFoundException
    
    
    
    ;

    
    
    
    import
    
    
    
     java
    
    
    
    .
    
    
    
    io
    
    
    
    .
    
    
    
    FileReader
    
    
    
    ;

    
    
    
    import
    
    
    
     java
    
    
    
    .
    
    
    
    io
    
    
    
    .
    
    
    
    IOException
    
    
    
    ;


    
    
    
    public
    
    
    
     
    
    
    
    class
    
    
    
     
    
    
    
    CPUTool

    
    
    
    {

    
    
    
     
    
    
    
    private
    
    
    
     
    
    
    
    final
    
    
    
     
    
    
    
    static
    
    
    
     
    
    
    
    String
    
    
    
     kCpuInfoMaxFreqFilePath 
    
    
    
    =
    
    
    
     
    
    
    
    "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq"
    
    
    
    ;


    
    
    
     
    
    
    
    public
    
    
    
     
    
    
    
    static
    
    
    
     
    
    
    
    int
    
    
    
     getMaxCpuFreq
    
    
    
    ()

    
    
    
     
    
    
    
    {

    
    
    
     
    
    
    
    int
    
    
    
     result 
    
    
    
    =
    
    
    
     
    
    
    
    0
    
    
    
    ;

    
    
    
     
    
    
    
    FileReader
    
    
    
     fr 
    
    
    
    =
    
    
    
     
    
    
    
    null
    
    
    
    ;

    
    
    
     
    
    
    
    BufferedReader
    
    
    
     br 
    
    
    
    =
    
    
    
     
    
    
    
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    ;

    
    
    
     
    
    
    
    try

    
    
    
     
    
    
    
    {

    
    
    
     fr 
    
    
    
    =
    
    
    
     
    
    
    
    new
    
    
    
     
    
    
    
    FileReader
    
    
    
    (
    
    
    
    kCpuInfoMaxFreqFilePath
    
    
    
    );

    
    
    
     br 
    
    
    
    =
    
    
    
     
    
    
    
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     text 
    
    
    
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    readLine
    
    
    
    ();

    
    
    
     result 
    
    
    
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    Integer
    
    
    
    .
    
    
    
    parseInt
    
    
    
    (
    
    
    
    text
    
    
    
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    trim
    
    
    
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    }
    
    
    
     
    
    
    
    catch
    
    
    
     
    
    
    
    (
    
    
    
    FileNotFoundException
    
    
    
     e
    
    
    
    )

    
    
    
     
    
    
    
    {

    
    
    
     e
    
    
    
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    printStackTrace
    
    
    
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    {

    
    
    
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    finally

    
    
    
     
    
    
    
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    }


    
    
    
     
    
    
    
    return
    
    
    
     result
    
    
    
    ;

    
    
    
     
    
    
    
    }


    
    
    
     
    
    
    
    private
    
    
    
     
    
    
    
    final
    
    
    
     
    
    
    
    static
    
    
    
     
    
    
    
    String
    
    
    
     kCpuInfoMinFreqFilePath 
    
    
    
    =
    
    
    
     
    
    
    
    "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq"
    
    
    
    ;


    
    
    
     
    
    
    
    /* 获取CPU最小频率（单位KHZ） */

    
    
    
     
    
    
    
    public
    
    
    
     
    
    
    
    static
    
    
    
     
    
    
    
    int
    
    
    
     getMinCpuFreq
    
    
    
    ()

    
    
    
     
    
    
    
    {

    
    
    
     
    
    
    
    int
    
    
    
     result 
    
    
    
    =
    
    
    
     
    
    
    
    0
    
    
    
    ;

    
    
    
     
    
    
    
    FileReader
    
    
    
     fr 
    
    
    
    =
    
    
    
     
    
    
    
    null
    
    
    
    ;

    
    
    
     
    
    
    
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    =
    
    
    
     
    
    
    
    new
    
    
    
     
    
    
    
    FileReader
    
    
    
    (
    
    
    
    kCpuInfoMinFreqFilePath
    
    
    
    );

    
    
    
     br 
    
    
    
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    Integer
    
    
    
    .
    
    
    
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    ());

    
    
    
     
    
    
    
    }
    
    
    
     
    
    
    
    catch
    
    
    
     
    
    
    
    (
    
    
    
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    {

    
    
    
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    }

    
    
    
     
    
    
    
    return
    
    
    
     result
    
    
    
    ;

    
    
    
     
    
    
    
    }


    
    
    
     
    
    
    
    private
    
    
    
     
    
    
    
    final
    
    
    
     
    
    
    
    static
    
    
    
     
    
    
    
    String
    
    
    
     kCpuInfoCurFreqFilePath 
    
    
    
    =
    
    
    
     
    
    
    
    "/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq"
    
    
    
    ;


    
    
    
     
    
    
    
    /* 实时获取CPU当前频率（单位KHZ） */

    
    
    
     
    
    
    
    public
    
    
    
     
    
    
    
    static
    
    
    
     
    
    
    
    int
    
    
    
     getCurCpuFreq
    
    
    
    ()

    
    
    
     
    
    
    
    {

    
    
    
     
    
    
    
    int
    
    
    
     result 
    
    
    
    =
    
    
    
     
    
    
    
    0
    
    
    
    ;

    
    
    
     
    
    
    
    FileReader
    
    
    
     fr 
    
    
    
    =
    
    
    
     
    
    
    
    null
    
    
    
    ;

    
    
    
     
    
    
    
    BufferedReader
    
    
    
     br 
    
    
    
    =
    
    
    
     
    
    
    
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    ;

    
    
    
     
    
    
    
    try

    
    
    
     
    
    
    
    {

    
    
    
     fr 
    
    
    
    =
    
    
    
     
    
    
    
    new
    
    
    
     
    
    
    
    FileReader
    
    
    
    (
    
    
    
    kCpuInfoCurFreqFilePath
    
    
    
    );

    
    
    
     br 
    
    
    
    =
    
    
    
     
    
    
    
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    fr
    
    
    
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    String
    
    
    
     text 
    
    
    
    =
    
    
    
     br
    
    
    
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    readLine
    
    
    
    ();

    
    
    
     result 
    
    
    
    =
    
    
    
     
    
    
    
    Integer
    
    
    
    .
    
    
    
    parseInt
    
    
    
    (
    
    
    
    text
    
    
    
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    trim
    
    
    
    ());

    
    
    
     
    
    
    
    }
    
    
    
     
    
    
    
    catch
    
    
    
     
    
    
    
    (
    
    
    
    FileNotFoundException
    
    
    
     e
    
    
    
    )

    
    
    
     
    
    
    
    {

    
    
    
     e
    
    
    
    .
    
    
    
    printStackTrace
    
    
    
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    )

    
    
    
     
    
    
    
    {

    
    
    
     e
    
    
    
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    printStackTrace
    
    
    
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    // TODO Auto-generated catch block

    
    
    
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    close
    
    
    
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    catch
    
    
    
     
    
    
    
    (
    
    
    
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     e
    
    
    
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    {

    
    
    
     
    
    
    
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     e
    
    
    
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    }

    
    
    
     
    
    
    
    return
    
    
    
     result
    
    
    
    ;

    
    
    
     
    
    
    
    }


    
    
    
     
    
    
    
    /* 获取CPU名字 */

    
    
    
     
    
    
    
    public
    
    
    
     
    
    
    
    static
    
    
    
     
    
    
    
    String
    
    
    
     getCpuName
    
    
    
    ()

    
    
    
     
    
    
    
    {

    
    
    
     
    
    
    
    FileReader
    
    
    
     fr 
    
    
    
    =
    
    
    
     
    
    
    
    null
    
    
    
    ;

    
    
    
     
    
    
    
    BufferedReader
    
    
    
     br 
    
    
    
    =
    
    
    
     
    
    
    
    null
    
    
    
    ;

    
    
    
     
    
    
    
    try

    
    
    
     
    
    
    
    {

    
    
    
     fr 
    
    
    
    =
    
    
    
     
    
    
    
    new
    
    
    
     
    
    
    
    FileReader
    
    
    
    (
    
    
    
    "/proc/cpuinfo"
    
    
    
    );

    
    
    
     br 
    
    
    
    =
    
    
    
     
    
    
    
    new
    
    
    
     
    
    
    
    BufferedReader
    
    
    
    (
    
    
    
    fr
    
    
    
    );

    
    
    
     
    
    
    
    String
    
    
    
     text 
    
    
    
    =
    
    
    
     br
    
    
    
    .
    
    
    
    readLine
    
    
    
    ();

    
    
    
     
    
    
    
    String
    
    
    
    []
    
    
    
     array 
    
    
    
    =
    
    
    
     text
    
    
    
    .
    
    
    
    split
    
    
    
    (
    
    
    
    ":\\s+"
    
    
    
    ,
    
    
    
     
    
    
    
    2
    
    
    
    );

    
    
    
     
    
    
    
    for
    
    
    
     
    
    
    
    (
    
    
    
    int
    
    
    
     i 
    
    
    
    =
    
    
    
     
    
    
    
    0
    
    
    
    ;
    
    
    
     i 
    
    
    
    <
    
    
    
     array
    
    
    
    .
    
    
    
    length
    
    
    
    ;
    
    
    
     i
    
    
    
    ++)

    
    
    
     
    
    
    
    {

    
    
    
     
    
    
    
    }

    
    
    
     
    
    
    
    return
    
    
    
     array
    
    
    
    [
    
    
    
    1
    
    
    
    ];

    
    
    
     
    
    
    
    }
    
    
    
     
    
    
    
    catch
    
    
    
     
    
    
    
    (
    
    
    
    FileNotFoundException
    
    
    
     e
    
    
    
    )

    
    
    
     
    
    
    
    {

    
    
    
     e
    
    
    
    .
    
    
    
    printStackTrace
    
    
    
    ();

    
    
    
     
    
    
    
    }
    
    
    
     
    
    
    
    catch
    
    
    
     
    
    
    
    (
    
    
    
    IOException
    
    
    
     e
    
    
    
    )

    
    
    
     
    
    
    
    {

    
    
    
     e
    
    
    
    .
    
    
    
    printStackTrace
    
    
    
    ();

    
    
    
     
    
    
    
    }
    
    
    
     
    
    
    
    finally

    
    
    
     
    
    
    
    {

    
    
    
     
    
    
    
    if
    
    
    
     
    
    
    
    (
    
    
    
    fr 
    
    
    
    !=
    
    
    
     
    
    
    
    null
    
    
    
    )

    
    
    
     
    
    
    
    try

    
    
    
     
    
    
    
    {

    
    
    
     fr
    
    
    
    .
    
    
    
    close
    
    
    
    ();

    
    
    
     
    
    
    
    }
    
    
    
     
    
    
    
    catch
    
    
    
     
    
    
    
    (
    
    
    
    IOException
    
    
    
     e
    
    
    
    )

    
    
    
     
    
    
    
    {

    
    
    
     
    
    
    
    // TODO Auto-generated catch block

    
    
    
     e
    
    
    
    .
    
    
    
    printStackTrace
    
    
    
    ();

    
    
    
     
    
    
    
    }

    
    
    
     
    
    
    
    if
    
    
    
     
    
    
    
    (
    
    
    
    br 
    
    
    
    !=
    
    
    
     
    
    
    
    null
    
    
    
    )

    
    
    
     
    
    
    
    try

    
    
    
     
    
    
    
    {

    
    
    
     br
    
    
    
    .
    
    
    
    close
    
    
    
    ();

    
    
    
     
    
    
    
    }
    
    
    
     
    
    
    
    catch
    
    
    
     
    
    
    
    (
    
    
    
    IOException
    
    
    
     e
    
    
    
    )

    
    
    
     
    
    
    
    {

    
    
    
     
    
    
    
    // TODO Auto-generated catch block

    
    
    
     e
    
    
    
    .
    
    
    
    printStackTrace
    
    
    
    ();

    
    
    
     
    
    
    
    }

    
    
    
     
    
    
    
    }

    
    
    
     
    
    
    
    return
    
    
    
     
    
    
    
    null
    
    
    
    ;

    
    
    
     
    
    
    
    }

    
    
    
    }

   
   
   
   
   
   
   
   


   
   
   
   

结束