关于android：如何从任何地方获取包名？


How to get package name from anywhere?

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。

如果我从一个View或Activity对象可用的方法调用它们，但是如果我想从一个没有View或Activity的完全独立的类中找到包名，它们是否有效 这种方式(直接或间接)？

相关讨论

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：

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public static String PACKAGE_NAME;

然后..

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@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。

相关讨论

如果您使用gradle-android-plugin构建您的应用程序，那么您可以使用

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BuildConfig.APPLICATION_ID

从任何范围检索包名称，包括一个静态的。

相关讨论

如果单词"anywhere"意味着没有明确的Context(例如来自后台线程)，您应该在项目中定义一个类，如：

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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manifest中，您需要将此类添加到Application选项卡的Name字段。或者编辑xml并放入

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<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

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String packagename= MyApp.getContext().getPackageName();

希望能帮助到你。

相关讨论

如果使用gradle build，请使用：BuildConfig.APPLICATION_ID获取应用程序的包名称。

相关讨论

你可以得到你的包名：

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$ /path/to/adb shell 'pm list packages -f myapp'
package:/data/app/mycompany.myapp-2.apk=mycompany.myapp

以下是选项：

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$ 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>"
"
  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.
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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;

}

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：

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BuildConfig.APPLICATION_ID

这将为您提供在应用程序gradle中声明的包名称：

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android {
    defaultConfig {
        applicationId"com.domain.www"
    }
}

如果您有兴趣获取java类使用的包名称(有时不同于applicationId)，则可以使用

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BuildConfig.class.getPackage().toString()

如果您对使用哪一个感到困惑，请阅读：

Note: The application ID used to be directly tied to your code's
package name; so some Android APIs use the term"package name" in
their method names and parameter names, but this is actually your
application ID. For example, the Context.getPackageName() method
returns your application ID. There's no need to ever share your code's
true package name outside your app code.

相关讨论

您可以使用未记录的方法android.app.ActivityThread.currentPackageName()：

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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 -

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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。

确保在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 -

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<application
    android:name=".MyApplicationName"
    ...
>

然后，要从任何其他模块获取包名称，请输入

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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。

只需导入Android.app，即可使用：

Application.getProcessName()

获取当前的应用程序进程名称，不带上下文，视图或活动。

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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。

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)

例：
String PackageName = BuildConfig.APPLICATION_ID;