如何从任何地方获取软件包名称?


346

我知道Context.getApplicationContext()View.getContext()的可用性,通过它们我可以实际调用Context.getPackageName()来检索应用程序的程序包名称。

如果我从一个可用a View或一个Activity对象可用的方法中调用它们,它们会起作用,但是如果我想从一个完全独立的类中使用no View或查找包名称Activity,是否有办法(直接或间接)呢?


7
接受的答案将使您的应用程序偶尔崩溃-阅读AddDev&Turbo的评论,并感谢他们俩提出的建议解决方案。
nikib3ro 2012年

1
您可能没有其他选择,但是作为最佳实践,我会说最好以某种方式从上一个Context点将其传递到您需要的类中。您正在从一个不了解上下文的类中以静态方式访问运行时上下文信息,这对我来说很不好。另一种方法是将其硬编码到某个地方。
亚当(

Answers:


487

一个想法是在您的主要活动中有一个静态变量,实例化为程序包名称。然后只需引用该变量即可。

您将必须在主要活动的onCreate()方法中对其进行初始化:

全局类:

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,您可以通过访问它Main.PACKAGE_NAME


3
对于我来说,这似乎是最实用的解决方案,但确实需要我创建活动的子类... +1。
ef2011 2011年

1
刚刚发现了类似的参考:stackoverflow.com/questions/2002288/...
ef2011

13
我的理解是,final只能在构造函数中一次仅可进行初始化。onCreate()不是构造函数。如果我弄错了,请更正。
ef2011 2011年

79
这种方法是不正确的。例如,如果您在进行次级活动时应用程序进入后台,然后被还原。您的主要活动的onCreate()无法调用,您的PACKAGE_NAME将为null!另外,如果您的应用程序有10个入口点,并且没有明确的“主要活动”怎么办?您可以在这个问题上找到我的答案,以找到正确的方法
Addev 2012年

3
@Turbo,如果Android终止了该进程,onCreate则无论如何都将不得不再次调用它,因此此解决方案仍然应该不是问题。
John Leehey 2012年

276

如果您使用gradle-android-plugin构建您的应用,则可以使用

BuildConfig.APPLICATION_ID

从任何范围检索包名称,包括 静态的。


23
那是正确的方法,应该是公认的答案。
aberaud

4
注意:对于多风味的构建,这将返回(取决于用于访问BuildConfig类的导入)默认配置的软件包名称,而不是风味的软件包名称。
罗尔夫(Rolfツ)2016年

2
@Rolfツ这是不正确的,它将返回应用程序的正确程序包名称;)也许您误认为它与您的Java类的程序包名称
Billda

28
如果在库项目中使用它,请小心-这将无法工作。
zyamys

6
如果在项目内的多个模块中也使用此功能,请务必小心。
user802421

68

如果使用“任何地方”一词表示没有显式的Context(例如来自后台线程),则应在项目中定义一个类,例如:

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,您manifest需要将此类添加到选项卡上的Name字段Application。或编辑xml并放入

<application
    android:name="com.example.app.MyApp"
    android:icon="@drawable/icon"
    android:label="@string/app_name"
    .......
    <activity
        ......

然后可以从任何地方打电话

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

希望能帮助到你。


这不是线程安全的,但是如果稍后通过此活动启动后台线程,则可能可以摆脱它。
tomwhipple

3
它是线程安全的,因为在启动应用程序时首先要设置对实例的引用
Addev 2012年

17
对于这个问题:code.google.com/p/android/issues/detail? id = 8727 ContentProvider对象是在Application对象之前创建的,这显然与文档相反,但显然也是根据设计的。如果在ContentProvider的初始化期间调用了getInstance(),则可能导致您的实例仍未设置。
卡尔

3
文档上的Application.onCreate()内容已更改为反映此情况:它现在专门声明“在应用程序启动时,任何活动,服务或接收者对象(内容提供者除外)之前调用”。
Paul Lammertsma

2
这应该是选择的答案,因为无论运行什么活动,上下文都不会消失。
Elad Nava 2013年

43

如果使用gradle build,请使用以下命令:BuildConfig.APPLICATION_ID获取应用程序的程序包名称。


6
应用程序ID和程序包名称是不同的。应用程序ID是通过gradle.build文件定义的,而程序包名称是在清单中定义的。尽管它们通常具有相同的价值,但在更复杂的构建方案中,它们通常也有所不同。可以将不同的应用程序ID分配给不同的构建配置,而软件包名称保持不变。
乌里

3
@Uli对于那些想详细了解细微差别的人,tools.android.com / tech
Kevin Lee,

10
@Uli话虽如此,即使app.gradle中的applicationId与AndroidManifest.xml内的packageName有所不同,调用context.getPackageName()也会返回applicationId而不是AndroidManifest.xml内的packageName。新构建系统的目的是将两者解耦,因此applicationId是Google Play及其安装到的设备已知的应用程序的实际程序包名称-部署后无法更改。我的意思是,可以使用BuildConfig.APPLICATION_ID。让我知道我是否记错了(:
Kevin Lee

2
@kevinze完全正确!我进行了测试以进行仔细检查。感谢您的澄清/纠正。
乌里2016年

5
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;

}

4

您可以这样获取软件包名称:

$ /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.

3

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:必须在应用程序的主线程上完成。

感谢此博客文章提供了这个想法:http : //blog.javia.org/static-the-android-application-package/


2

对于使用Gradle的用户(如@Billda所述),您可以通过以下方式获取软件包名称:

BuildConfig.APPLICATION_ID

这为您提供了在应用gradle中声明的包名称:

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

如果您有兴趣获取Java类使用的软件包名称(有时与相比有所不同applicationId),则可以使用

BuildConfig.class.getPackage().toString()

如果您困惑使用哪个,请在这里阅读

注意:应用程序ID以前直接与代码的程序包名称绑定;因此某些Android API在其方法名称和参数名称中使用术语“程序包名称”,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。无需在应用程序代码外共享代码的真实包名称。


您使用了哪个代码?请提供您得到的确切错误。
user1506104

1
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; 

希望它能工作。


0

创建一个Java模块以在启动您的应用程序时首先运行。该模块将扩展android Application类,并初始化所有全局应用程序变量,并且还包含应用程序范围内的实用程序例程-

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系统获取程序包名称的逻辑;但是,以上代码比从android获取更小,更快,更干净的代码。

确保在运行任何活动之前在AndroidManifest.xml文件中放置一个条目,以告知android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软件包名称,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。


0

使用:BuildConfig.APPLICATION_ID可以在任何地方获取包名(即服务,接收者,活动,片段等)

示例:字符串PackageName = BuildConfig.APPLICATION_ID;


0

只需导入Android.app,即可使用: <br/>Application.getProcessName()<br/>

获取没有上下文,视图或活动的当前应用程序进程名称。

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