Android系统版本与API等级对应关系表

转自https://blog.csdn.net/wangsf1112/article/details/51545101

安卓中由于不同版本的API会有一些变化，导致一些较早版本可能不支持新的方法，或者某些功能处理过程不太一样，需要判断当前版本然后进行适当的处理。

那么，如何判断当前API的版本号呢？

例如判断API版本号是否大于等于19：如果（Build.VERSION。SDK_INT > = Build.VERSION_CODES。KITKAT）{...}
其中， Build.VERSION_CODES。 KITKAT = 19
Build.VERSION.SDK_INT是什么： [java] 查看纯文本

public static final int SDK_INT = SystemProperties.getInt（“ro.build.version.sdk” ， 0 ）;

获取系统属性配置文件中“ro.build.version.sdk”的值，该值即为当前设备的系统版本号。

在Android源码frameworks \ base \ core \ java \ android \ os \ Build.java文件中的Build.VERSION_CODES类下包含对应各个版本的版本号信息。以下是Android 7.0版本的源码：
public static class VERSION_CODES {
/**
* Magic version number for a current development build, which has
* not yet turned into an official release.
*/
public static final int CUR_DEVELOPMENT = 10000;

/**
* October 2008: The original, first, version of Android. Yay!
*/
public static final int BASE = 1;

/**
* February 2009: First Android update, officially called 1.1.
*/
public static final int BASE_1_1 = 2;

/**
* May 2009: Android 1.5.
*/
public static final int CUPCAKE = 3;

/**
* September 2009: Android 1.6.
*/
public static final int DONUT = 4;

/**
* November 2009: Android 2.0
*/
public static final int ECLAIR = 5;

/**
* December 2009: Android 2.0.1
*/
public static final int ECLAIR_0_1 = 6;

/**
* January 2010: Android 2.1
*/
public static final int ECLAIR_MR1 = 7;

/**
* June 2010: Android 2.2
*/
public static final int FROYO = 8;

/**
* November 2010: Android 2.3
*/
public static final int GINGERBREAD = 9;

/**
* February 2011: Android 2.3.3.
*/
public static final int GINGERBREAD_MR1 = 10;

/**
* February 2011: Android 3.0.
*/
public static final int HONEYCOMB = 11;

/**
* May 2011: Android 3.1.
*/
public static final int HONEYCOMB_MR1 = 12;

/**
* June 2011: Android 3.2.
*/
public static final int HONEYCOMB_MR2 = 13;

/**
* October 2011: Android 4.0.
*/
public static final int ICE_CREAM_SANDWICH = 14;

/**
* December 2011: Android 4.0.3.
*/
public static final int ICE_CREAM_SANDWICH_MR1 = 15;

/**
* June 2012: Android 4.1.
*/
public static final int JELLY_BEAN = 16;

/**
* Android 4.2: Moar jelly beans!
*/
public static final int JELLY_BEAN_MR1 = 17;

/**
* Android 4.3: Jelly Bean MR2, the revenge of the beans.
*/
public static final int JELLY_BEAN_MR2 = 18;

/**
* Android 4.4: KitKat, another tasty treat.
*/
public static final int KITKAT = 19;

/**
* Android 4.4W: KitKat for watches, snacks on the run.
*/
public static final int KITKAT_WATCH = 20

public static final int L = 21;

/**
* Lollipop. A flat one with beautiful shadows. But still tasty. Android 5.0
*/
public static final int LOLLIPOP = 21;

/**
* Lollipop with an extra sugar coating on the outside! Android 5.1
*/
public static final int LOLLIPOP_MR1 = 22

/**
* M is for Marshmallow! Android 6.0
*/
public static final int M = 23;

/ **
* N代表¯\ _（ツ）_ /¯。Android 7.0
* /
public static final int N = 24;
}

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