设备信息可以在Settings - About 里看到
最近想改机器的build number，找到了 build/core/Makefile 里的定义
# Display parameters shown under Settings -> About Phone ifeq ($(TARGET_BUILD_VARIANT),user) # User builds should show: # release build number or branch.buld_number non-release builds # Dev. branches should have DISPLAY_BUILD_NUMBER set ifeq "true" "$(DISPLAY_BUILD_NUMBER)" BUILD_DISPLAY_ID := $(BUILD_ID)-$(BUILD_NUMBER) $(BUILD_KEYS) else BUILD_DISPLAY_ID := $(BUILD_ID) $(BUILD_KEYS) endif else # Non-user builds should show detailed build information BUILD_DISPLAY_ID := $(build_desc) endif
可看出非user版BUILD_DISPLAY_ID用的是build_desc
可以搜索到
build_desc := $(TARGET_PRODUCT)-$(TARGET_BUILD_VARIANT) $(PLATFORM_VERSION) $(BUILD_ID) $(BUILD_NUMBER) $(BUILD_VERSION_TAGS)
打开 build/core/build_id.mk ，可以修改BUILD_ID
重新编译代码即可
源码 Build.java (base/core/java/android/os) 有对这些信息的引用
想要在apk中取得的话，直接调用Build这个类即可
例如：
Build.DISPLAY 返回的就是一个String
/** A build ID string meant for displaying to the user */ public static final String DISPLAY = getString("ro.build.display.id");
弄一个界面show_info.xml，显示当前版本的信息。界面里放着很多TextView。
MainActivity.java 如下。取出各个状态信息
public class MainActivity extends Activity { private TextView buildTextView; private TextView idTextView; private TextView productTextView; private TextView boardTextView; private TextView deviceTextView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.show_info); buildTextView = (TextView) findViewById(R.id.build_number); idTextView = (TextView) findViewById(R.id.build_id); productTextView= (TextView) findViewById(R.id.product); boardTextView= (TextView) findViewById(R.id.board); deviceTextView= (TextView) findViewById(R.id.device); buildTextView.setText(Build.DISPLAY); idTextView.setText(Build.ID); productTextView.setText(Build.PRODUCT); boardTextView.setText(Build.BOARD); deviceTextView.setText(Build.DEVICE); } }
装上后，在机器上可以看到相关信息
