Android Makefile

1. build binary file to host; out/host/linux-x86/bin/xxx

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE_TAGS := optional

LOCAL_PREBUILT_EXECUTABLES := aaa

include $(BUILD_HOST_PREBUILT)

2. build prebuilt APK to system/app

include $(CLEAR_VARS)

LOCAL_MODULE := install_flash_player

LOCAL_MODULE_TAGS := optional

LOCAL_SRC_FILES := $(LOCAL_MODULE).apk

LOCAL_MODULE_CLASS := APPS

LOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)

LOCAL_CERTIFICATE := PRESIGNED

include $(BUILD_PREBUILT)

3. build multiple prebuilt lib to system/lib

LOCAL_PATH:= $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE_TAGS := optional

LOCAL_PREBUILT_LIBS := libflashplayer.so \

  libysshared.so

LOCAL_SHARED_LIBRARIES := libflashplayer \

 libysshared

include $(BUILD_MULTI_PREBUILT)

4. build prebuilt binary file to system/bin

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_SRC_FILES := bbb

LOCAL_MODULE := bbb

LOCAL_MODULE_CLASS := EXECUTABLES

LOCAL_MODULE_TAGS := optional

include $(BUILD_PREBUILT)

prebuilt_files :=

$(call add-prebuilt-files, EXECUTABLES, $(prebuilt_files))

5. build .jar

LOCAL_PATH:= $(call my-dir)

#MAKE_JAR

include $(CLEAR_VARS)

LOCAL_SRC_FILES := $(call all-subdir-java-files)

LOCAL_MODULE := selfthread

LOCAL_MODULE_TAGS := optional

#need these jar built first, used in code base: core, ext, framework

LOCAL_JAVA_LIBRARIES := core ext framework

include $(BUILD_JAVA_LIBRARY)

#MAKE_XML

include $(CLEAR_VARS)

LOCAL_MODULE := selfthreadxml.xml

LOCAL_MODULE_CLASS := ETC

LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)/permissions

LOCAL_MODULE_TAGS := optional

LOCAL_SRC_FILES := $(LOCAL_MODULE)

include $(BUILD_PREBUILT)

6. execute shell script in Android make file

#one shell call shell command once, if you don't want exit shell, use ";"

#use "``", in some environment it will shoe missing separator

#example $(shell `pwd`)

PWD := $(shell pwd)/vendor/company/anymote-protocol/java

$(shell `echo $(PWD)`)

$(shell `cd $(PWD);\

make;\

cd -`)

#or in one line

$(shell `cd $(PWD);make;cd -`)

#if use target, type $mm target, but default won't execute it, example

#$mm anymote

anymote:

cd vendor/company/anymote-protocol/java;\

echo `pwd`;\

make;\

cd -

7. make order, for example, run anymote.mk, polo.mk first

LOCAL_PATH:= $(call my-dir)

include $(call all-makefiles-under, $(LOCAL_PATH))

include $(ANDROID_BUILD_TOP)/vendor/company/anymote-protocol/java/anymote.mk

include $(ANDROID_BUILD_TOP)/vendor/company/google-tv-pairing-protocol/java/polo.mk

8. what is different with all-subdir-makefiles and all-makefiles-under

all-subdir-makefiles: 表示“當前目錄下沒有需要編譯的文件，請向子目錄深入”，是告訴編譯器繼續向目錄深處遞迴的一種寫法。

all-makefiles-under: 為當前目錄下有文件需要編譯，而且在當前目錄下還有子目錄，子目錄中也有文件需要編譯，同樣也要包含告訴編譯器在編譯完當前目錄下的文件後，繼續向子目錄深入的語句。

Android Resource

How get Resource

1. getResources().getString(android.R.string.cancel);
2. Resources.getSystem().getString(android.R.string.cancel);
3. getString(android.R.string.cancel);

The first and the third ones are using "context." invisibly. So, very often (in static members or out of activity members) you can't use them directly, unless you pass context or resource as a static variable or as a parameter into your scope. But the second one

Resources.getSystem().getString(android.R.string.cancel)
You can use ABSOLUTELY EVERYWHERE in your application, even in static constants declaration! But for system resources only


GetLocals

Resources.getSystem().getassets().getLocals()

getAsset() 是從下列路徑取得,不是從frameowrks-res.apk中取得

framework/base/core/java/android/content/res/AssetManager.java

framework/base/core/jni/android_util_AssetManager.cpp

framework/base/include/utils/AssetManager.h

framework/base/libs/utils/AssetManager.cpp

framework/base/libs/utils/ResourceTypes.cpp