Android 以编程方式安装卸载 APK(PackageManager 与 Intents)

我的应用程序会安装其他应用程序，它需要跟踪安装了哪些应用程序.当然，这可以通过简单地保存已安装应用程序的列表来实现.但这不应该是必要的！包装经理应负责维护installedBy(a，b)关系.事实上，根据API，它是:

公共抽象字符串getInstallerPackageName(字符串packageName)-

当前的做法

使用Intent安装APK

Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(apkUri, "application/vnd.android.package-archive");
startActivity(intent);

使用Intent卸载APK:

Intent intent = new Intent(Intent.ACTION_DELETE, Uri.fromParts("package",
getPackageManager().getPackageArchiveInfo(apkUri.getPath(), 0).packageName,null));
startActivity(intent);

这显然不是Android Market安装/卸载软件包的方式.他们使用更丰富版本的PackageManager.这可以通过从Android Git存储库下载Android源代码来看到.下面是与意图方法相对应的两个隐藏方法.不幸的是，它们对外部开发人员不可用.但也许他们会在future 呢？

更好的方法

使用PackageManager安装APK

/**
 * @hide
 * 
 * Install a package. Since this may take a little while, the result will
 * be posted back to the given observer.  An installation will fail if the calling context
 * lacks the {@link android.Manifest.permission#INSTALL_PACKAGES} permission, if the
 * package named in the package file's manifest is already installed, or if there's no space
 * available on the device.
 *
 * @param packageURI The location of the package file to install.  This can be a 'file:' or a
 * 'content:' URI.
 * @param observer An observer callback to get notified when the package installation is
 * complete. {@link IPackageInstallObserver#packageInstalled(String, int)} will be
 * called when that happens.  observer may be null to indicate that no callback is desired.
 * @param flags - possible values: {@link #INSTALL_FORWARD_LOCK},
 * {@link #INSTALL_REPLACE_EXISTING}, {@link #INSTALL_ALLOW_TEST}.
 * @param installerPackageName Optional package name of the application that is performing the
 * installation. This identifies which market the package came from.
 */
public abstract void installPackage(
        Uri packageURI, IPackageInstallObserver observer, int flags,
        String installerPackageName);

使用PackageManager卸载APK

/**
 * Attempts to delete a package.  Since this may take a little while, the result will
 * be posted back to the given observer.  A deletion will fail if the calling context
 * lacks the {@link android.Manifest.permission#DELETE_PACKAGES} permission, if the
 * named package cannot be found, or if the named package is a "system package".
 * (TODO: include pointer to documentation on "system packages")
 *
 * @param packageName The name of the package to delete
 * @param observer An observer callback to get notified when the package deletion is
 * complete. {@link android.content.pm.IPackageDeleteObserver#packageDeleted(boolean)} will be
 * called when that happens.  observer may be null to indicate that no callback is desired.
 * @param flags - possible values: {@link #DONT_DELETE_DATA}
 *
 * @hide
 */
public abstract void deletePackage(
        String packageName, IPackageDeleteObserver observer, int flags);

差异

• 使用Intents时，本地包管理器不知道安装来自哪个应用程序.具体地说，getInsteller PackageName(.)返回NULL.

• 隐藏方法installPackage(…)将安装程序包名称作为参数，并且很可能能够设置此值.

问题

是否可以使用intents指定软件包安装程序名称

提示:如果你想下载Android源代码，你可以按照这里描述的步骤:下载源代码树.提取*.java文件，并根据包的层次 struct 将它们放在文件夹中，您可以查看以下整洁的脚本:View Android Source Code in Eclipse我>