利用源码编译Android系统Java类库

1、编写Java项目和Android.mk文件

├── Android.mk

└── src

└── com

└── lhw

└── framework

└── led

└── Led.java

//Led.java文件

package com.lhw.framework.led;

/**
* LED操作库
* @author Micky Liu
*/
public class Led {

public boolean turnOn() {
return true;
}

public boolean turnOff() {
return true;
}
}

//Android.mk文件

LOCAL_PATH  := $(call my-dir)

LOCAL_SRC_FILES     := $(call all-java-files-under, src)
LOCAL_MODULE        := framework_led
LOCAL_MODULE_TAGS   := framework_led

LOCAL_JAVA_LIBRARIES        :=
LOCAL_STATIC_JAVA_LIBRARIES :=

include $(BUILD_JAVA_LIBRARY)

2、编译

mmm /home/administrator/workspace/android_test/framework_led

编译结果：

Install: out/target/product/generic/system/framework/framework_led.jar