Android 尝试获取包版本信息以显示在“关于”消息中
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/2610473/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Trying to get Package Version Information to display in an "About" message
提问by user313135
I have been struggling with getting the versionName for a running application from the PackageInfo Object type.
我一直在努力从 PackageInfo 对象类型获取正在运行的应用程序的 versionName。
I have constructed a Parcelable Interface with all of the fields associated with the PackageInfo Object type. The primary input for that interface method is a Parcel object.
我已经构建了一个 Parcelable 接口，其中包含与 PackageInfo 对象类型关联的所有字段。该接口方法的主要输入是 Parcel 对象。
I cannot seem to figure out how to correctly associate these Parcelable, Parcel, and PackageInfo objects.
我似乎无法弄清楚如何正确关联这些 Parcelable、Parcel 和 PackageInfo 对象。
Is there any sample code out there that I can look at? Doesn't seem like it should be that difficult but it seems to be stumping me.
有没有我可以查看的示例代码？看起来应该没有那么难，但它似乎让我很难过。
Thanks Jazz
谢谢爵士
回答by Casebash
Sample code:
示例代码：
try {
PackageInfo packageInfo = getPackageManager().getPackageInfo(getPackageName(), 0);
return packageInfo.versionName;
} catch (NameNotFoundException e) {
//Handle exception
}
回答by KimKha
Modern way:
现代方式：
If you build your Android project by Gradle (with Android Studio), there is a best shortcut to get version:
如果您通过 Gradle（使用 Android Studio）构建您的 Android 项目，则有一个获取版本的最佳快捷方式：
com.yourproject.BuildConfig.VERSION_NAME
It's linked to versionNamein your build.gradlefile.
它链接到versionName您的build.gradle文件中。
In fact, you can get Application ID, and more information from your build.gradlefile by this way.
事实上，您可以build.gradle通过这种方式从您的文件中获取应用程序 ID 和更多信息。
回答by Janusz
I use the following code to get the version used in the manifest. I wrote a small function to encapsulate and hide this somewhat big chunk needed to just get an int.
我使用以下代码来获取清单中使用的版本。我写了一个小函数来封装和隐藏这个获取 int 所需的大块。
private int getVersion() {
int version = -1;
try {
PackageInfo pInfo = getPackageManager().getPackageInfo(getPackageName(), PackageManager.GET_META_DATA);
version = pInfo.versionCode;
} catch (NameNotFoundException e1) {
Log.e(this.getClass().getSimpleName(), "Name not found", e1);
}
return version;
}
This will return the int chosen to identify your version in the market (VersionCode). Not the VersionName. To see how to change to code for this have a look at the code from Casebash.
这将返回选择用于标识您在市场上的版本的 int (VersionCode)。不是版本名称。要了解如何为此更改代码，请查看 Casebash 中的代码。
回答by CommonsWare
PackageInfo's versionNameis a public data member. You do not need to do anything special to get "the versionName for a running application from the PackageInfo Object type". If you have a PackageInfoobject named info, you access versionNamevia info.versionName.
PackageInfo'sversionName是公共数据成员。您无需执行任何特殊操作即可从 PackageInfo 对象类型获取“正在运行的应用程序的 versionName”。如果您有一个PackageInfo名为的对象info，您可以versionName通过info.versionName.
回答by Ferlle G.
Also there is a shortcut:
还有一个捷径：
String version = new PackageInfo().versionName;
String version = new PackageInfo().versionName;
