Android 关于设备版本号¶
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");
Build相关信息¶
打印出各个状态信息
Log.d(TAG, "Build.DISPLAY: " + Build.DISPLAY);
Log.d(TAG, "Build.ID: " + Build.ID);
Log.d(TAG, "Build.PRODUCT: " + Build.PRODUCT);
Log.d(TAG, "Build.BOARD: " + Build.BOARD);
Log.d(TAG, "Build.DEVICE: " + Build.DEVICE);
// Build.DISPLAY: KTU84P
// Build.ID: KTU84P
// Build.PRODUCT: gucci
// Build.BOARD: msm8916
// Build.DEVICE: gucci
可以从Build类中获取设备的相关信息；结合时间戳来用，可以作为日志文件名。
private static final long TIME_7_DAYS_MM = 1000 * 60 * 60 * 24 * 7; // 7 days in millisecond
private String timestamp() {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd_HH-MM-SS", Locale.CHINA);
return format.format(new Date(System.currentTimeMillis()));
} // 2017-12-26_11-35-14
private void myDeviceId() {
String id = Build.BRAND + "-" + Build.MODEL + "-" + Build.DEVICE + "-" + Build.ID;
id = id.replace(" ", "_");
Log.d(TAG, "id: " + id);
String id64 = Base64.encodeToString(id.getBytes(), Base64.DEFAULT);
byte[] decodedId64 = Base64.decode(id64, Base64.DEFAULT);
Log.d(TAG, "id in base64: " + id64 + ", decodedId64: " + new String(decodedId64));
}
// id: Xiaomi-HM_NOTE_1S-gucci-KTU84P
// id in base64: WGlhb21pLUhNX05PVEVfMVMtZ3VjY2ktS1RVODRQ
// , decodedId64: Xiaomi-HM_NOTE_1S-gucci-KTU84P
检查base64加密解密
$ echo Xiaomi-HM_NOTE_1S-gucci-KTU84P | base64
WGlhb21pLUhNX05PVEVfMVMtZ3VjY2ktS1RVODRQCg==
$ echo WGlhb21pLUhNX05PVEVfMVMtZ3VjY2ktS1RVODRQ | base64 -d
Xiaomi-HM_NOTE_1S-gucci-KTU84P
本站说明
一起在知识的海洋里呛水吧。广告内容与本站无关。如果喜欢本站内容，欢迎投喂作者，谢谢支持服务器。如有疑问和建议，欢迎在下方评论~