237

可以从自定义 Android 应用程序以编程方式安装动态下载的 apk。

4

18 回答 18

246

您可以轻松启动市场链接或安装提示：

Intent promptInstall = new Intent(Intent.ACTION_VIEW)
    .setDataAndType(Uri.parse("file:///path/to/your.apk"), 
                    "application/vnd.android.package-archive");
startActivity(promptInstall);

来源

Intent goToMarket = new Intent(Intent.ACTION_VIEW)
    .setData(Uri.parse("market://details?id=com.package.name"));
startActivity(goToMarket);

来源

但是，没有用户的明确许可，您不能安装 .apks ；除非设备和您的程序已植根，否则不会。

于 2011-01-05T14:07:33.877 回答
56 
File file = new File(dir, "App.apk");
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
startActivity(intent);

我遇到了同样的问题，经过几次尝试，它对我来说是这样的。我不知道为什么，但是分别设置数据和类型搞砸了我的意图。

于 2011-03-17T10:58:14.253 回答
52

提供给这个问题的解决方案都适用于targetSdkVersion23及以下的s。但是，对于 Android N，即 API 级别 24 及更高版本，它们不起作用并崩溃，并出现以下异常：

android.os.FileUriExposedException: file:///storage/emulated/0/... exposed beyond app through Intent.getData()

这是因为从 Android 24 开始，Uri下载文件的地址发生了变化。例如，一个名为appName.apk存储在应用程序的主要外部文件系统中的安装文件，其包名称com.example.test为

file:///storage/emulated/0/Android/data/com.example.test/files/appName.apk

为API 23及以下，而类似

content://com.example.test.authorityStr/pathName/Android/data/com.example.test/files/appName.apk

为API 24及以上。

可以在此处找到更多详细信息，我将不再赘述。

要回答targetSdkVersionof24及以上的问题，必须遵循以下步骤： 将以下内容添加到 AndroidManifest.xml：

<application
        android:allowBackup="true"
        android:label="@string/app_name">
        <provider
            android:name="android.support.v4.content.FileProvider"
            android:authorities="${applicationId}.authorityStr"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/paths"/>
        </provider>
</application>

2. 将以下paths.xml文件添加到src, main 中的xml文件夹中：res

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <external-path
        name="pathName"
        path="pathValue"/>
</paths>

这pathName是上面示例性内容 uri 示例中所示的内容，并且pathValue是系统上的实际路径。放一个“。”是个好主意。如果您不想添加任何额外的子目录，则上面的 pathValue （不带引号）。

  1. 编写以下代码以appName.apk在主外部文件系统上安装具有名称的 apk：

    File directory = context.getExternalFilesDir(null);
File file = new File(directory, fileName);
Uri fileUri = Uri.fromFile(file);
if (Build.VERSION.SDK_INT >= 24) {
    fileUri = FileProvider.getUriForFile(context, context.getPackageName(),
            file);
}
Intent intent = new Intent(Intent.ACTION_VIEW, fileUri);
intent.putExtra(Intent.EXTRA_NOT_UNKNOWN_SOURCE, true);
intent.setDataAndType(fileUri, "application/vnd.android" + ".package-archive");
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
context.startActivity(intent);
activity.finish();

在外部文件系统上写入您自己的应用程序的私有目录时也不需要权限。

我在这里编写了一个 AutoUpdate 库，我在其中使用了上述内容。

于 2017-01-15T16:32:54.473 回答
33

好吧，我挖得更深，从 Android Source 中找到了 PackageInstaller 应用程序的来源。

https://github.com/android/platform_packages_apps_packageinstaller

从清单中我发现它需要许可：

    <uses-permission android:name="android.permission.INSTALL_PACKAGES" />

并在确认后发生实际安装过程

Intent newIntent = new Intent();
newIntent.putExtra(PackageUtil.INTENT_ATTR_APPLICATION_INFO, mPkgInfo.applicationInfo);
newIntent.setData(mPackageURI);
newIntent.setClass(this, InstallAppProgress.class);
String installerPackageName = getIntent().getStringExtra(Intent.EXTRA_INSTALLER_PACKAGE_NAME);
if (installerPackageName != null) {
   newIntent.putExtra(Intent.EXTRA_INSTALLER_PACKAGE_NAME, installerPackageName);
}
startActivity(newIntent);
于 2011-01-05T14:17:45.267 回答
22

我只想分享一个事实，即我的 apk 文件已保存到我的应用程序“数据”目录中，并且我需要将 apk 文件的权限更改为全球可读，以便以这种方式安装它，否则系统正在抛出“解析错误：解析包时出现问题”；所以使用来自@Horaceman 的解决方案：

File file = new File(dir, "App.apk");
file.setReadable(true, false);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
startActivity(intent);
于 2014-11-11T15:00:11.457 回答
22

这可以帮助别人很多！

第一的：

private static final String APP_DIR = Environment.getExternalStorageDirectory().getAbsolutePath() + "/MyAppFolderInStorage/";

private void install() {
    File file = new File(APP_DIR + fileName);

    if (file.exists()) {
        Intent intent = new Intent(Intent.ACTION_VIEW);
        String type = "application/vnd.android.package-archive";

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            Uri downloadedApk = FileProvider.getUriForFile(getContext(), "ir.greencode", file);
            intent.setDataAndType(downloadedApk, type);
            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
        } else {
            intent.setDataAndType(Uri.fromFile(file), type);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        }

        getContext().startActivity(intent);
    } else {
        Toast.makeText(getContext(), "ّFile not found!", Toast.LENGTH_SHORT).show();
    }
}

第二：对于 android 7 及更高版本，您应该在清单中定义一个提供程序，如下所示！

    <provider
        android:name="android.support.v4.content.FileProvider"
        android:authorities="ir.greencode"
        android:exported="false"
        android:grantUriPermissions="true">
        <meta-data
            android:name="android.support.FILE_PROVIDER_PATHS"
            android:resource="@xml/paths" />
    </provider>

第三：在 res/xml 文件夹中定义 path.xml，如下所示！如果您想将其更改为其他内容，我正在使用此路径进行内部存储，有几种方法！你可以去这个链接： FileProvider

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <external-path name="your_folder_name" path="MyAppFolderInStorage/"/>
</paths>

第四：您应该在清单中添加此权限：

<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES"/>

允许应用程序请求安装包。面向大于 25 的 API 的应用必须持有此权限才能使用 Intent.ACTION_INSTALL_PACKAGE。

请确保提供者权限相同！

于 2019-01-29T15:19:10.007 回答
7

不要忘记请求权限：

android.Manifest.permission.WRITE_EXTERNAL_STORAGE 
android.Manifest.permission.READ_EXTERNAL_STORAGE

在 AndroidManifest.xml 中添加提供者和权限：

<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES"/>
...
<application>
    ...
    <provider
        android:name="android.support.v4.content.FileProvider"
        android:authorities="${applicationId}"
        android:exported="false"
        android:grantUriPermissions="true">
        <meta-data
            android:name="android.support.FILE_PROVIDER_PATHS"
            android:resource="@xml/provider_paths"/>
    </provider>
</application>

创建 XML 文件提供程序 res/xml/provider_paths.xml

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <external-path
        name="external"
        path="." />
    <external-files-path
        name="external_files"
        path="." />
    <cache-path
        name="cache"
        path="." />
    <external-cache-path
        name="external_cache"
        path="." />
    <files-path
        name="files"
        path="." />
</paths>

使用下面的示例代码：

   public class InstallManagerApk extends AppCompatActivity {

    static final String NAME_APK_FILE = "some.apk";
    public static final int REQUEST_INSTALL = 0;

     @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // required permission:
        // android.Manifest.permission.WRITE_EXTERNAL_STORAGE 
        // android.Manifest.permission.READ_EXTERNAL_STORAGE

        installApk();

    }

    ...

    /**
     * Install APK File
     */
    private void installApk() {

        try {

            File filePath = Environment.getExternalStorageDirectory();// path to file apk
            File file = new File(filePath, LoadManagerApkFile.NAME_APK_FILE);

            Uri uri = getApkUri( file.getPath() ); // get Uri for  each SDK Android

            Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
            intent.setData( uri );
            intent.setFlags( Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_ACTIVITY_NEW_TASK );
            intent.putExtra(Intent.EXTRA_NOT_UNKNOWN_SOURCE, true);
            intent.putExtra(Intent.EXTRA_RETURN_RESULT, true);
            intent.putExtra(Intent.EXTRA_INSTALLER_PACKAGE_NAME, getApplicationInfo().packageName);

            if ( getPackageManager().queryIntentActivities(intent, 0 ) != null ) {// checked on start Activity

                startActivityForResult(intent, REQUEST_INSTALL);

            } else {
                throw new Exception("don`t start Activity.");
            }

        } catch ( Exception e ) {

            Log.i(TAG + ":InstallApk", "Failed installl APK file", e);
            Toast.makeText(getApplicationContext(), e.getMessage(), Toast.LENGTH_LONG)
                .show();

        }

    }

    /**
     * Returns a Uri pointing to the APK to install.
     */
    private Uri getApkUri(String path) {

        // Before N, a MODE_WORLD_READABLE file could be passed via the ACTION_INSTALL_PACKAGE
        // Intent. Since N, MODE_WORLD_READABLE files are forbidden, and a FileProvider is
        // recommended.
        boolean useFileProvider = Build.VERSION.SDK_INT >= Build.VERSION_CODES.N;

        String tempFilename = "tmp.apk";
        byte[] buffer = new byte[16384];
        int fileMode = useFileProvider ? Context.MODE_PRIVATE : Context.MODE_WORLD_READABLE;
        try (InputStream is = new FileInputStream(new File(path));
             FileOutputStream fout = openFileOutput(tempFilename, fileMode)) {

            int n;
            while ((n = is.read(buffer)) >= 0) {
                fout.write(buffer, 0, n);
            }

        } catch (IOException e) {
            Log.i(TAG + ":getApkUri", "Failed to write temporary APK file", e);
        }

        if (useFileProvider) {

            File toInstall = new File(this.getFilesDir(), tempFilename);
            return FileProvider.getUriForFile(this,  BuildConfig.APPLICATION_ID, toInstall);

        } else {

            return Uri.fromFile(getFileStreamPath(tempFilename));

        }

    }

    /**
     * Listener event on installation APK file
     */
    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if(requestCode == REQUEST_INSTALL) {

            if (resultCode == Activity.RESULT_OK) {
                Toast.makeText(this,"Install succeeded!", Toast.LENGTH_SHORT).show();
            } else if (resultCode == Activity.RESULT_CANCELED) {
                Toast.makeText(this,"Install canceled!", Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(this,"Install Failed!", Toast.LENGTH_SHORT).show();
            }

        }

    }

    ...

}
于 2019-05-18T15:51:53.147 回答
6

在 Android Oreo 及以上版本中，我们必须采用不同的方法以编程方式安装 apk。

 private void installApkProgramatically() {


    try {
        File path = activity.getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS);

        File file = new File(path, filename);

        Uri uri;

        if (file.exists()) {

            Intent unKnownSourceIntent = new Intent(Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES).setData(Uri.parse(String.format("package:%s", activity.getPackageName())));

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

                if (!activity.getPackageManager().canRequestPackageInstalls()) {
                    startActivityForResult(unKnownSourceIntent, Constant.UNKNOWN_RESOURCE_INTENT_REQUEST_CODE);
                } else {
                    Uri fileUri = FileProvider.getUriForFile(activity.getBaseContext(), activity.getApplicationContext().getPackageName() + ".provider", file);
                    Intent intent = new Intent(Intent.ACTION_VIEW, fileUri);
                    intent.putExtra(Intent.EXTRA_NOT_UNKNOWN_SOURCE, true);
                    intent.setDataAndType(fileUri, "application/vnd.android" + ".package-archive");
                    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
                    intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
                    startActivity(intent);
                    alertDialog.dismiss();
                }

            } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {

                Intent intent1 = new Intent(Intent.ACTION_INSTALL_PACKAGE);
                uri = FileProvider.getUriForFile(activity.getApplicationContext(), BuildConfig.APPLICATION_ID + ".provider", file);
                activity.grantUriPermission("com.abcd.xyz", uri, Intent.FLAG_GRANT_READ_URI_PERMISSION);
                activity.grantUriPermission("com.abcd.xyz", uri, Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
                intent1.setDataAndType(uri,
                        "application/*");
                intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                intent1.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
                intent1.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
                startActivity(intent1);

            } else {
                Intent intent = new Intent(Intent.ACTION_VIEW);

                uri = Uri.fromFile(file);

                intent.setDataAndType(uri,
                        "application/vnd.android.package-archive");
                intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                startActivity(intent);
            }
        } else {

            Log.i(TAG, " file " + file.getPath() + " does not exist");
        }
    } catch (Exception e) {

        Log.i(TAG, "" + e.getMessage());

    }
}

Oreo 及以上版本需要未知资源安装权限。所以在活动结果中你必须检查结果以获得许可

    @Override
public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    switch (requestCode) {

        case Constant.UNKNOWN_RESOURCE_INTENT_REQUEST_CODE:
            switch (resultCode) {
                case Activity.RESULT_OK:
                    installApkProgramatically();

                    break;
                case Activity.RESULT_CANCELED:
                    //unknown resouce installation cancelled

                    break;
            }
            break;
    }
}
于 2020-07-04T14:25:43.737 回答
5

另一种不需要硬编码接收应用程序的解决方案，因此更安全：

Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
intent.setData( Uri.fromFile(new File(pathToApk)) );
startActivity(intent);
于 2015-01-22T21:30:52.953 回答
4

是的，这是可能的。但为此，您需要手机安装未经验证的来源。例如，slideMe 就是这样做的。我认为你能做的最好的事情是检查应用程序是否存在并为 Android Market 发送一个意图。您应该使用 android Market 的 url 方案。

market://details?id=package.name

我不确切知道如何开始活动，但如果你用那种 url 开始活动。它应该打开 android 市场并让您选择安装应用程序。

于 2011-01-05T13:21:22.667 回答
4

值得注意的是，如果您使用DownloadManager开始下载，请务必将其保存到外部位置，例如setDestinationInExternalFilesDir(c, null, "<your name here>).apk";. package-archive 类型的意图似乎不喜欢content:用于下载到内部位置的方案，但喜欢file:. （尝试将内部路径包装到 File 对象中然后获取路径也不起作用，即使它会产生一个file:url，因为应用程序不会解析 apk；看起来它必须是外部的。）

例子：

int uriIndex = cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI);
String downloadedPackageUriString = cursor.getString(uriIndex);
File mFile = new File(Uri.parse(downloadedPackageUriString).getPath());
Intent promptInstall = new Intent(Intent.ACTION_VIEW)
        .setDataAndType(Uri.fromFile(mFile), "application/vnd.android.package-archive")
        .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
appContext.startActivity(promptInstall);
于 2014-04-25T11:43:19.320 回答
2

只是一个扩展，如果有人需要一个库，那么这可能会有所帮助。感谢拉加夫

于 2013-06-27T19:25:40.173 回答
2

试试这个

String filePath = cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_FILENAME));
String title = filePath.substring( filePath.lastIndexOf('/')+1, filePath.length() );
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(new File(filePath)), "application/vnd.android.package-archive");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); // without this flag android returned a intent error!
MainActivity.this.startActivity(intent);
于 2015-03-14T16:12:06.657 回答
2

大约两个月前来到这里，据说已经弄清楚了。今天回来了，不能正面或反面。据我所知，我的设置没有任何变化，所以很明显，我过去想出的任何东西都不足以满足现在的我。我终于设法让某些东西再次工作，所以在这里记录它以供将来我和其他任何可能从另一次尝试中受益的人。

此尝试代表原始 Android Java安装 APK - 会话 API示例的直接 Xamarin C# 翻译。它可能需要一些额外的工作，但这至少是一个开始。我让它在 Android 9 设备上运行，尽管我有针对 Android 11 的项目。

安装ApkSessionApi.cs

namespace LauncherDemo.Droid
{
    using System;
    using System.IO;

    using Android.App;
    using Android.Content;
    using Android.Content.PM;
    using Android.OS;
    using Android.Widget;

    [Activity(Label = "InstallApkSessionApi", LaunchMode = LaunchMode.SingleTop)]
    public class InstallApkSessionApi : Activity
    {
        private static readonly string PACKAGE_INSTALLED_ACTION =
                "com.example.android.apis.content.SESSION_API_PACKAGE_INSTALLED";

        protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);
            this.SetContentView(Resource.Layout.install_apk_session_api);

            // Watch for button clicks.
            Button button = this.FindViewById<Button>(Resource.Id.install);
            button.Click += this.Button_Click;
        }

        private void Button_Click(object sender, EventArgs e)
        {
            PackageInstaller.Session session = null;
            try
            {
                PackageInstaller packageInstaller = this.PackageManager.PackageInstaller;
                PackageInstaller.SessionParams @params = new PackageInstaller.SessionParams(
                        PackageInstallMode.FullInstall);
                int sessionId = packageInstaller.CreateSession(@params);
                session = packageInstaller.OpenSession(sessionId);
                this.AddApkToInstallSession("HelloActivity.apk", session);

                // Create an install status receiver.
                Context context = this;
                Intent intent = new Intent(context, typeof(InstallApkSessionApi));
                intent.SetAction(PACKAGE_INSTALLED_ACTION);
                PendingIntent pendingIntent = PendingIntent.GetActivity(context, 0, intent, 0);
                IntentSender statusReceiver = pendingIntent.IntentSender;

                // Commit the session (this will start the installation workflow).
                session.Commit(statusReceiver);
            }
            catch (IOException ex)
            {
                throw new InvalidOperationException("Couldn't install package", ex);
            }
            catch
            {
                if (session != null)
                {
                    session.Abandon();
                }

                throw;
            }
        }

        
        private void AddApkToInstallSession(string assetName, PackageInstaller.Session session)
        {
            // It's recommended to pass the file size to openWrite(). Otherwise installation may fail
            // if the disk is almost full.
            using Stream packageInSession = session.OpenWrite("package", 0, -1);
            using Stream @is = this.Assets.Open(assetName);
            byte[] buffer = new byte[16384];
            int n;
            while ((n = @is.Read(buffer)) > 0)
            {
                packageInSession.Write(buffer, 0, n);
            }
        }

        // Note: this Activity must run in singleTop launchMode for it to be able to receive the intent
        // in onNewIntent().
        protected override void OnNewIntent(Intent intent)
        {
            Bundle extras = intent.Extras;
            if (PACKAGE_INSTALLED_ACTION.Equals(intent.Action))
            {
                PackageInstallStatus status = (PackageInstallStatus)extras.GetInt(PackageInstaller.ExtraStatus);
                string message = extras.GetString(PackageInstaller.ExtraStatusMessage);
                switch (status)
                {
                    case PackageInstallStatus.PendingUserAction:
                        // This test app isn't privileged, so the user has to confirm the install.
                        Intent confirmIntent = (Intent) extras.Get(Intent.ExtraIntent);
                        this.StartActivity(confirmIntent);
                        break;
                    case PackageInstallStatus.Success:
                        Toast.MakeText(this, "Install succeeded!", ToastLength.Short).Show();
                        break;
                    case PackageInstallStatus.Failure:
                    case PackageInstallStatus.FailureAborted:
                    case PackageInstallStatus.FailureBlocked:
                    case PackageInstallStatus.FailureConflict:
                    case PackageInstallStatus.FailureIncompatible:
                    case PackageInstallStatus.FailureInvalid:
                    case PackageInstallStatus.FailureStorage:
                        Toast.MakeText(this, "Install failed! " + status + ", " + message,
                                ToastLength.Short).Show();
                        break;
                    default:
                        Toast.MakeText(this, "Unrecognized status received from installer: " + status,
                                ToastLength.Short).Show();
                        break;
                }
            }
        }
    }
}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="com.companyname.launcherdemo" android:installLocation="auto">
    <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="30" />
    <application android:label="LauncherDemo.Android" android:theme="@style/MainTheme" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
</manifest>

我特别喜欢这种方法的是它不需要在清单中进行任何特殊工作——不需要广播接收器、文件提供程序等。当然，这将应用程序资产中的一些 APK 作为其源，而更有用的系统可能会使用一些给定的 APK 路径。我想这会引入一定程度的额外复杂性。此外，在 Android 完成之前，我从未遇到过 Xamarin GC 关闭流的任何问题（至少据我所知）。我也没有任何关于 APK 没有被解析的问题。我确保使用签名的 APK（在部署到设备时由 Visual Studio 生成的 APK 工作得很好），并且我再次没有遇到任何文件访问权限问题，因为在此示例中使用了来自应用程序资产的 APK .

这里提供的其他一些答案的一件事是使侧载权限授予更加简化的想法。Yabaze Cool的回答提供了这个功能：

Intent unKnownSourceIntent = new Intent(Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES).setData(Uri.parse(String.format("package:%s", activity.getPackageName())));

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

   if (!activity.getPackageManager().canRequestPackageInstalls()) {
       startActivityForResult(unKnownSourceIntent, Constant.UNKNOWN_RESOURCE_INTENT_REQUEST_CODE);
...

当我测试我的翻译时，我卸载了启动器演示和它安装的应用程序。没有提供检查以canRequestPackageInstalls使其到达我必须手动按下附加设置按钮以将我带到与上述ACTION_MANAGE_UNKNOWN_APP_SOURCES意图相同的对话框的位置。因此，添加此逻辑有助于在一定程度上简化用户的安装过程。

于 2021-10-29T19:53:15.650 回答
0

UpdateNode为 Android 提供了一个 API，用于从另一个 App 中安装 APK 包。

您可以在线定义您的更新并将 API 集成到您的应用程序中 - 就是这样。
目前 API 处于 Beta 状态，但您已经可以自己进行一些测试。

除此之外，UpdateNode 还提供通过系统显示消息 - 如果您想向用户传达重要信息，这非常有用。

我是客户端开发团队的一员，并且至少在我自己的 Android 应用程序中使用消息功能。

请参阅此处描述如何集成 API

于 2014-03-24T14:27:13.360 回答
0

试试这个 - 写在清单上：

uses-permission android:name="android.permission.INSTALL_PACKAGES"
        tools:ignore="ProtectedPermissions"

编写代码：

File sdCard = Environment.getExternalStorageDirectory();
String fileStr = sdCard.getAbsolutePath() + "/Download";// + "app-release.apk";
File file = new File(fileStr, "app-release.apk");
Intent promptInstall = new Intent(Intent.ACTION_VIEW).setDataAndType(Uri.fromFile(file),
                        "application/vnd.android.package-archive");

startActivity(promptInstall);
于 2015-05-25T14:27:04.477 回答
0

首先将以下行添加到 AndroidManifest.xml ：

<uses-permission android:name="android.permission.INSTALL_PACKAGES"
    tools:ignore="ProtectedPermissions" />

然后使用以下代码安装apk：

File sdCard = Environment.getExternalStorageDirectory();
            String fileStr = sdCard.getAbsolutePath() + "/MyApp";// + "app-release.apk";
            File file = new File(fileStr, "TaghvimShamsi.apk");
            Intent promptInstall = new Intent(Intent.ACTION_VIEW).setDataAndType(Uri.fromFile(file),
                    "application/vnd.android.package-archive");
            startActivity(promptInstall);
于 2017-11-22T14:26:03.217 回答
0

基于答案@Uroš Podkrižnik。

对于不同版本的 android（API 级别 21-30），通过 APK 安装应用程序可能会有所不同：

private var uri: Uri? = null
private var manager: DownloadManager? = null
private var file: File? = null
private var request: DownloadManager.Request? = null

private val REQUEST_WRITE_PERMISSION = 786
private val REQUEST_INSTALL_PACKAGE = 1234

private var receiver: BroadcastReceiver? = null
private var installIntent: Intent? = null

...
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    val externalStorageDir = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
        context?.getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS)
    } else {
        @Suppress("DEPRECATION")
        Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
    }
    val destination = "$externalStorageDir/Application.apk"
    uri = Uri.parse("file://$destination")

    file = File(destination)
    file?.let { if (it.exists()) it.delete() }
    
    request = DownloadManager.Request(Uri.parse("https://path_to_file/application.apk"))
    request?.let {
        it.setDescription("Update App")
        it.setTitle("Application")
        it.setDestinationUri(uri)
    }
    manager = context?.getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager

    // for level android api >= 23 needs permission to write to external storage
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        if (ContextCompat.checkSelfPermission(context!!, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
            // here you can display the loading diagram
            registerReceiver()
        } else {
            // request for permission to write to external storage
            requestPermissions(
                arrayOf(Manifest.permission.WRITE_EXTERNAL_STORAGE),
                REQUEST_WRITE_PERMISSION
            )
        }
    } else {
        // here you can display the loading diagram
        registerReceiver()
    }
}

创建并注册接收者：

private val onDownloadComplete = object : BroadcastReceiver() {
    // install app when apk is loaded
    override fun onReceive(ctxt: Context, intent: Intent) {
        val mimeType = "application/vnd.android.package-archive"
        receiver = this
        try {
            installIntent = Intent(Intent.ACTION_VIEW)
            installIntent?.flags = Intent.FLAG_ACTIVITY_CLEAR_TOP

            // for android api >= 24 requires FileProvider
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                installIntent?.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)

                val fileProviderURI = FileProvider.getUriForFile(
                    context!!,
                    context!!.applicationContext.packageName + ".provider",
                    file!!)

                installIntent?.setDataAndType(fileProviderURI, mimeType)

                // for android api >= 26 requires permission to install from APK in settings
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                    if (context!!.applicationContext.packageManager.canRequestPackageInstalls()) {
                        installFromAPK()
                    } else goToSecuritySettings()
                } else installFromAPK()
            } else {
                // for android api < 24 used file:// instead content://
                // (no need to use FileProvider)
                installIntent?.setDataAndType(uri, mimeType)
                installFromAPK()
            }
        } catch (e: Exception) {
            // view error message
        }
    }
}

private fun registerReceiver() {
    manager!!.enqueue(request)
    context?.registerReceiver(
        onDownloadComplete,
        IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE)
    )
}

private fun installFromAPK() {
    try {
        startActivity(installIntent)
        context?.unregisterReceiver(receiver)
        activity?.finish()
    } catch (e: Exception) {
        // view error message
    }
}

// go to settings for get permission install from APK
private fun goToSecuritySettings() {
    val intent = Intent(Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES).setData(
        Uri.parse(String.format(
            "package:%s",
            context!!.applicationContext.packageName
        ))
    )
    try {
        startActivityForResult(intent, REQUEST_INSTALL_PACKAGE)
    } catch (e: Exception) {
        // view error message
    }
}

拦截权限请求WRITE_EXTERNAL_STORAGE的结果：

override fun onRequestPermissionsResult(
        requestCode: Int,
        permissions: Array<String>,
        grantResults: IntArray
) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults)
    if (requestCode == REQUEST_WRITE_PERMISSION
            && grantResults.isNotEmpty()
            && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
        try {
            // here you can display the loading diagram
            registerReceiver()
        } catch (e: Exception) {
            // view error message
        }
    }
}

在安全设置中截取用户选择的结果：

@RequiresApi(api = Build.VERSION_CODES.O)
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)
    if (requestCode == REQUEST_INSTALL_PACKAGE
            && resultCode == AppCompatActivity.RESULT_OK) {
        if (context!!.applicationContext.packageManager.canRequestPackageInstalls()) {
            installFromAPK()
        }
    } else {
        // view error message
    }
}

添加到您的清单：

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES"/>
<application...>
    ...
    <provider
        android:name="androidx.core.content.FileProvider"
        android:authorities="${applicationId}.provider"
        android:exported="false"
        android:grantUriPermissions="true">
        <meta-data
            android:name="android.support.FILE_PROVIDER_PATHS"
            android:resource="@xml/provider_paths" />
    </provider>
    ...
</application>

将 provider_paths.xml 文件添加到 res/xml：

<?xml version="1.0" encoding="utf-8"?>
<paths>
    <external-path name="external_files" path="."/>
</paths>

对于android API level = 30，从安全设置返回不起作用，所以使用通过浏览器安装：

try {
    val intent = Intent(Intent.ACTION_VIEW)
    intent.data = Uri.parse("https://path_to_file/application.apk")
    startActivity(intent)
    activity?.finish()
} catch (e: ActivityNotFoundException) { }
于 2022-01-17T06:03:09.243 回答