我知道Context.getApplicationContext()和View.getContext()的可用性，通过它我可以实际调用Context.getPackageName()来检索应用程序的包名称。
如果我从View或Activity对象可用的方法调用它们，但是如果我想从没有View或Activity的完全独立的类中找到包名，那么它们有用吗（直接或间接）？
一个想法是在主活动中有一个静态变量，实例化为包名。然后只引用该变量。
您必须在主活动的onCreate()方法中初始化它：
全球同学：
public static String PACKAGE_NAME;
然后..
@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。
对于那些使用Gradle的人，正如@Billda所提到的，您可以通过以下方式获取包名：
BuildConfig.APPLICATION_ID
这将为您提供在应用程序gradle中声明的包名称：
android {
defaultConfig {
applicationId "com.domain.www"
}
}
如果您有兴趣获取java类使用的包名（有时与applicationId不同），您可以使用
BuildConfig.class.getPackage().toString()
如果你对哪一个使用感到困惑，read here：
注意：应用程序ID过去与代码的包名直接相关;因此，一些Android API在其方法名称和参数名称中使用术语“包名称”，但这实际上是您的应用程序ID。例如，Context.getPackageName（）方法返回您的应用程序ID。您无需在应用代码之外共享代码的真正包名称。
只需导入Android.app，即可使用：<br/>Application.getProcessName()<br/>
获取当前的应用程序进程名称，不带上下文，视图或活动。
使用：BuildConfig.APPLICATION_ID在任何地方获取PACKAGE NAME（即;服务，接收者，活动，片段等）
示例：String PackageName = BuildConfig.APPLICATION_ID;
如果您使用gradle-android-plugin构建您的应用程序，那么您可以使用
BuildConfig.APPLICATION_ID
从任何范围检索包名称，包括一个静态的。
如果用“anywhere”这个词你的意思是没有明确的Context（例如来自后台线程）你应该在你的项目中定义一个类，如：
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Name选项卡的Application字段中。或者编辑xml并放入
<application
android:name="com.example.app.MyApp"
android:icon="@drawable/icon"
android:label="@string/app_name"
.......
<activity
......
然后从你可以打电话的任何地方
String packagename= MyApp.getContext().getPackageName();
希望能帮助到你。
如果使用gradle build，请使用：BuildConfig.APPLICATION_ID获取应用程序的包名称。
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;
}
你可以得到你的包名：
$ /path/to/adb shell 'pm list packages -f myapp'
package:/data/app/mycompany.myapp-2.apk=mycompany.myapp
以下是选项：
$ 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.
您可以使用未记录的方法android.app.ActivityThread.currentPackageName()：
Class<?> clazz = Class.forName("android.app.ActivityThread");
Method method = clazz.getDeclaredMethod("currentPackageName", null);
String appPackageName = (String) method.invoke(clazz, null);
警告：这必须在应用程序的主线程上完成。
感谢这篇博客文章：http://blog.javia.org/static-the-android-application-package/。
创建一个在启动应用程序时最初运行的java模块。这个模块将扩展android应用程序类，并初始化任何全局应用程序变量，并包含应用程序范围的实用程序例程 -
public class MyApplicationName extends Application {
private final String PACKAGE_NAME = "com.mysite.myAppPackageName";
public String getPackageName() { return PACKAGE_NAME; }
}
当然，这可能包括从android系统获取包名的逻辑;但是，上面的代码比从android获取代码更小，更快，更干净。
请务必在AndroidManifest.xml文件中放置一个条目，告诉android在运行任何活动之前运行您的应用程序模块 -
<application
android:name=".MyApplicationName"
...
>
然后，要从任何其他模块获取包名称，请输入
MyApp myApp = (MyApp) getApplicationContext();
String myPackage = myApp.getPackageName();
使用应用程序模块还可以为需要但没有上下文的模块提供上下文。
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;
希望它会奏效。