[英]Prompting user to install APK
I'm building my own update mechanism for my Android app (I'm not using Play Store).我正在为我的 Android 应用程序(我没有使用 Play 商店)构建自己的更新机制。 I can successfully download a new apk using
DownloadManager
.我可以使用
DownloadManager
成功下载新的 apk。 Once the download is finished, I would like to prompt the user to install the apk.下载完成后,我想提示用户安装 apk。 I have tried the following approach:
我尝试了以下方法:
File file = context.getApplicationContext().getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS + "/app-debug.apk");
String test = file.getAbsolutePath();
Intent promptInstall = new Intent(Intent.ACTION_VIEW)
.setDataAndType(Uri.parse("content://" + file.getAbsolutePath()),
"application/vnd.android.package-archive");
context.startActivity(promptInstall);
Unfortunately, this does not work at all.不幸的是,这根本不起作用。 The file is there but there is no installation prompt.
该文件在那里,但没有安装提示。 What is going wrong?
出了什么问题? Do I also have to adapt the second argument to
setDataAndType
?我是否还必须将第二个参数调整为
setDataAndType
? It should work on SDK 23 to 29.它应该适用于 SDK 23 到 29。
Edit :编辑:
I have now tried the following approach:我现在尝试了以下方法:
File file = context.getApplicationContext().getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS + "/app-debug.apk");
Uri fileUri = Uri.fromFile(file); //for Build.VERSION.SDK_INT <= 24
if (Build.VERSION.SDK_INT >= 24) {
fileUri = FileProvider.getUriForFile(context, BuildConfig.APPLICATION_ID + ".provider", file);
}
Intent promptInstall = new Intent(Intent.ACTION_VIEW, fileUri);
promptInstall.putExtra(Intent.EXTRA_NOT_UNKNOWN_SOURCE, true);
promptInstall.setDataAndType(fileUri, "application/vnd.android.package-archive");
promptInstall.setFlags( Intent.FLAG_ACTIVITY_NEW_TASK);
promptInstall.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
context.startActivity(promptInstall);
In manifest I have now the following:在清单中,我现在有以下内容:
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES"/>
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="ir.greencode"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/path" />
</provider>
And I have created the path.xml file:我已经创建了 path.xml 文件:
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path name="external_files" path="." /></paths>
But now I'm getting the error message:但现在我收到错误消息:
java.lang.IllegalArgumentException: Couldn't find meta-data for provider with authority com.testapp.provider
java.lang.IllegalArgumentException:找不到具有权限 com.testapp.provider 的提供者的元数据
My downloaded APK is located in /storage/emulated/0/Android/data/com.testapp/files/Download/app-debug.apk
.我下载的 APK 位于
/storage/emulated/0/Android/data/com.testapp/files/Download/app-debug.apk
。 That means file
is pointing to that directory.这意味着
file
指向该目录。 In the end, I would like to store the apk either on internal storage or SD storage (depending on where more space is available).最后,我想将 apk 存储在内部存储或 SD 存储中(取决于有更多可用空间)。
How can I resolve the problem?我该如何解决这个问题?
Possible duplicate of Install Application programmatically on Android 在 Android 上以编程方式安装应用程序的可能副本
I think this answer from that thread should work:我认为该线程的这个答案应该有效:
https://stackoverflow.com/a/54424223/9490453 https://stackoverflow.com/a/54424223/9490453
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES"/>
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