1.If you want to build API for android target, build android SDK firstly
2.build AmlogicSetTopBox-api
3.tar zxvf AmlogicSetTopBox-android-src-xxxx.tgz
4.edit config/env_android.mk. change the environment variables to your directories(absolute path name needed). the variables contains:
	ANDROID_TOPDIR: root directory of the android SDK
	APIDIR: AmlogicSetTopBox-api directory
5.make TARGET=android config
6.make, and the generated "dvbdemotest.apk" will be installed in android system/app directory