View或Activity对象的方法中调用它们，它们能够正常工作。但如果我想要在一个完全独立没有View或Activity的类中找到包名，是否有直接或间接的方法可以实现呢？public static String PACKAGE_NAME;
那么...
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
PACKAGE_NAME = getApplicationContext().getPackageName();
}
然后您可以通过Main.PACKAGE_NAME访问它。
final 关键字使得变量不可变，并且只能在构造函数中进行初始化，并且仅能初始化一次。而 onCreate() 不是构造函数。如果我理解有误请纠正。 - ef2011onCreate方法将不得不再次被调用，因此这个解决方案仍然不应该成为问题。 - John LeeheyBuildConfig.APPLICATION_ID
从任何作用域（包括静态作用域）中检索软件包名称。
如果你用“任何地方”这个词指的是没有明确的Context（例如来自后台线程），那么你应该在项目中定义一个类，如下：
public class MyApp extends Application {
private static MyApp instance;
public static MyApp getInstance() {
return instance;
}
public static Context getContext(){
return instance;
// or return instance.getApplicationContext();
}
@Override
public void onCreate() {
instance = this;
super.onCreate();
}
}
然后在你的manifest中，你需要将这个类添加到Application选项卡的Name字段中。或者编辑xml并放置：
<application
android:name="com.example.app.MyApp"
android:icon="@drawable/icon"
android:label="@string/app_name"
.......
<activity
......
然后你可以从任何地方调用
String packagename= MyApp.getContext().getPackageName();
Application.onCreate() 的说明已经做了修改，现在明确指出：“在任何活动、服务或接收器对象（不包括内容提供程序）之前，在应用程序启动时调用”。请注意，我只是翻译，不会添加解释或其他额外的内容。 - Paul LammertsmaBuildConfig.APPLICATION_ID来获取应用程序的软件包名称。对于使用Gradle的人来说，就像@Billda提到的那样，你可以通过以下方式获取包名：
BuildConfig.APPLICATION_ID
这将为您提供在应用 gradle 中声明的软件包名称：
android {
defaultConfig {
applicationId "com.domain.www"
}
}
如果您想获取Java类使用的包名称（有时与applicationId不同），可以使用以下方法：
BuildConfig.class.getPackage().toString()
只需使用这段代码
val packageName = context.packageName
private String getApplicationName(Context context, String data, int flag) {
final PackageManager pckManager = context.getPackageManager();
ApplicationInfo applicationInformation;
try {
applicationInformation = pckManager.getApplicationInfo(data, flag);
} catch (PackageManager.NameNotFoundException e) {
applicationInformation = null;
}
final String applicationName = (String) (applicationInformation != null ? pckManager.getApplicationLabel(applicationInformation) : "(unknown)");
return applicationName;
}
您可以通过以下方式获取您的包名：
$ /path/to/adb shell 'pm list packages -f myapp'
package:/data/app/mycompany.myapp-2.apk=mycompany.myapp
以下是可选项：
$ adb
Android Debug Bridge version 1.0.32
Revision 09a0d98bebce-android
-a - directs adb to listen on all interfaces for a connection
-d - directs command to the only connected USB device
returns an error if more than one USB device is present.
-e - directs command to the only running emulator.
returns an error if more than one emulator is running.
-s <specific device> - directs command to the device or emulator with the given
serial number or qualifier. Overrides ANDROID_SERIAL
environment variable.
-p <product name or path> - simple product name like 'sooner', or
a relative/absolute path to a product
out directory like 'out/target/product/sooner'.
If -p is not specified, the ANDROID_PRODUCT_OUT
environment variable is used, which must
be an absolute path.
-H - Name of adb server host (default: localhost)
-P - Port of adb server (default: 5037)
devices [-l] - list all connected devices
('-l' will also list device qualifiers)
connect <host>[:<port>] - connect to a device via TCP/IP
Port 5555 is used by default if no port number is specified.
disconnect [<host>[:<port>]] - disconnect from a TCP/IP device.
Port 5555 is used by default if no port number is specified.
Using this command with no additional arguments
will disconnect from all connected TCP/IP devices.
device commands:
adb push [-p] <local> <remote>
- copy file/dir to device
('-p' to display the transfer progress)
adb pull [-p] [-a] <remote> [<local>]
- copy file/dir from device
('-p' to display the transfer progress)
('-a' means copy timestamp and mode)
adb sync [ <directory> ] - copy host->device only if changed
(-l means list but don't copy)
adb shell - run remote shell interactively
adb shell <command> - run remote shell command
adb emu <command> - run emulator console command
adb logcat [ <filter-spec> ] - View device log
adb forward --list - list all forward socket connections.
the format is a list of lines with the following format:
<serial> " " <local> " " <remote> "\n"
adb forward <local> <remote> - forward socket connections
forward specs are one of:
tcp:<port>
localabstract:<unix domain socket name>
localreserved:<unix domain socket name>
localfilesystem:<unix domain socket name>
dev:<character device name>
jdwp:<process pid> (remote only)
adb forward --no-rebind <local> <remote>
- same as 'adb forward <local> <remote>' but fails
if <local> is already forwarded
adb forward --remove <local> - remove a specific forward socket connection
adb forward --remove-all - remove all forward socket connections
adb reverse --list - list all reverse socket connections from device
adb reverse <remote> <local> - reverse socket connections
reverse specs are one of:
tcp:<port>
localabstract:<unix domain socket name>
localreserved:<unix domain socket name>
localfilesystem:<unix domain socket name>
adb reverse --norebind <remote> <local>
- same as 'adb reverse <remote> <local>' but fails
if <remote> is already reversed.
adb reverse --remove <remote>
- remove a specific reversed socket connection
adb reverse --remove-all - remove all reversed socket connections from device
adb jdwp - list PIDs of processes hosting a JDWP transport
adb install [-lrtsdg] <file>
- push this package file to the device and install it
(-l: forward lock application)
(-r: replace existing application)
(-t: allow test packages)
(-s: install application on sdcard)
(-d: allow version code downgrade)
(-g: grant all runtime permissions)
adb install-multiple [-lrtsdpg] <file...>
- push this package file to the device and install it
(-l: forward lock application)
(-r: replace existing application)
(-t: allow test packages)
(-s: install application on sdcard)
(-d: allow version code downgrade)
(-p: partial application install)
(-g: grant all runtime permissions)
adb uninstall [-k] <package> - remove this app package from the device
('-k' means keep the data and cache directories)
adb bugreport - return all information from the device
that should be included in a bug report.
adb backup [-f <file>] [-apk|-noapk] [-obb|-noobb] [-shared|-noshared] [-all] [-system|-nosystem] [<packages...>]
- write an archive of the device's data to <file>.
If no -f option is supplied then the data is written
to "backup.ab" in the current directory.
(-apk|-noapk enable/disable backup of the .apks themselves
in the archive; the default is noapk.)
(-obb|-noobb enable/disable backup of any installed apk expansion
(aka .obb) files associated with each application; the default
is noobb.)
(-shared|-noshared enable/disable backup of the device's
shared storage / SD card contents; the default is noshared.)
(-all means to back up all installed applications)
(-system|-nosystem toggles whether -all automatically includes
system applications; the default is to include system apps)
(<packages...> is the list of applications to be backed up. If
the -all or -shared flags are passed, then the package
list is optional. Applications explicitly given on the
command line will be included even if -nosystem would
ordinarily cause them to be omitted.)
adb restore <file> - restore device contents from the <file> backup archive
adb disable-verity - disable dm-verity checking on USERDEBUG builds
adb enable-verity - re-enable dm-verity checking on USERDEBUG builds
adb keygen <file> - generate adb public/private key. The private key is stored in <file>,
and the public key is stored in <file>.pub. Any existing files
are overwritten.
adb help - show this help message
adb version - show version num
scripting:
adb wait-for-device - block until device is online
adb start-server - ensure that there is a server running
adb kill-server - kill the server if it is running
adb get-state - prints: offline | bootloader | device
adb get-serialno - prints: <serial-number>
adb get-devpath - prints: <device-path>
adb remount - remounts the /system, /vendor (if present) and /oem (if present) partitions on the device read-write
adb reboot [bootloader|recovery]
- reboots the device, optionally into the bootloader or recovery program.
adb reboot sideload - reboots the device into the sideload mode in recovery program (adb root required).
adb reboot sideload-auto-reboot
- reboots into the sideload mode, then reboots automatically after the sideload regardless of the result.
adb sideload <file> - sideloads the given package
adb root - restarts the adbd daemon with root permissions
adb unroot - restarts the adbd daemon without root permissions
adb usb - restarts the adbd daemon listening on USB
adb tcpip <port> - restarts the adbd daemon listening on TCP on the specified port
networking:
adb ppp <tty> [parameters] - Run PPP over USB.
Note: you should not automatically start a PPP connection.
<tty> refers to the tty for PPP stream. Eg. dev:/dev/omap_csmi_tty1
[parameters] - Eg. defaultroute debug dump local notty usepeerdns
adb sync notes: adb sync [ <directory> ]
<localdir> can be interpreted in several ways:
- If <directory> is not specified, /system, /vendor (if present), /oem (if present) and /data partitions will be updated.
- If it is "system", "vendor", "oem" or "data", only the corresponding partition
is updated.
environment variables:
ADB_TRACE - Print debug information. A comma separated list of the following values
1 or all, adb, sockets, packets, rwx, usb, sync, sysdeps, transport, jdwp
ANDROID_SERIAL - The serial number to connect to. -s takes priority over this if given.
ANDROID_LOG_TAGS - When used with the logcat option, only these debug tags are printed.
android.app.ActivityThread.currentPackageName()：它可以获取当前正在运行的应用程序的包名。Class<?> clazz = Class.forName("android.app.ActivityThread");
Method method = clazz.getDeclaredMethod("currentPackageName", null);
String appPackageName = (String) method.invoke(clazz, null);
注意：这必须在应用程序的主线程上完成。
感谢此篇博客文章提供了这个想法。
PackageInfo pinfo = this.getPackageManager().getPackageInfo(getPackageName(), 0);
String sVersionCode = pinfo.versionCode; // 1
String sVersionName = pinfo.versionName; // 1.0
String sPackName = getPackageName(); // cz.okhelp.my_app
int nSdkVersion = Integer.parseInt(Build.VERSION.SDK);
int nSdkVers = Build.VERSION.SDK_INT;
希望它能够正常工作。