Develop Reference

Android open the directory of a uri obtained through ACTION_CREATE_DOCUMENT

I am using Android ACTION_CREATE_DOCUMENT to select a location to save a PDF file.
After getting the uri and writing to the file (as done in the code below), I want to show a Snackbar with the action set to opening the location of the file.
To be clear I don't want to open the file itself, but to help user locate the file using the file explorer app. Is there a "developer.android.com" recommended way to do this? The current code is as follows.
private void getSaveLocation() {
Intent intent = new Intent(Intent.ACTION_CREATE_DOCUMENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("application/pdf");
intent.putExtra(Intent.EXTRA_TITLE, "MyFile.pdf");
startActivityForResult(intent, MY_CODE);
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode != Activity.RESULT_OK || data == null || data.getData() == null) return;
Uri uri = data.getData();
OutputStream out = getContext().getContentResolver().openOutputStream(uri);
// write the pdf to out
try {
out.close();
showSnackbar(uri);
} catch (IOException e) {
e.printStackTrace();
}
}
void showSnackbar(Uri uri) {
Snackbar snackbar = Snackbar.make(getView(), "Saved to MyFile.pdf", Snackbar.LENGTH_LONG);
snackbar.setAction("Locate file", new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
// NEED TO SETUP THE INTENT CORRECTLY USING uri
activity.startActivity(intent);
}
});
snackbar.show();
}

Is there a "developer.android.com" recommended way to do this?
No.
First, there is no standard "open a file explorer on a particular location" Intent action.
Second, there is no requirement that ACTION_OPEN_DOCUMENT be used to open a document that is part of something that can be explored. The user can use it to access documents in other things (encrypted containers, cloud storage, etc.) that may not necessarily be accessible by a file manager.

ACTION_CREATE_DOCUMENT gives you an uri for a file and read write permissions for this file if you use the uri.
Even if you would manage to decode an uri for the parent directory you would not be able to use that uri as read and write permissions would lack.

exposed beyond app through ClipData.Item.getUri()

My API Version is 24
I'm using Camera and Bluetooth. And my device communicating other device.
The first function is, I'm going to call up the camera app from my app, take a picture and send it to other device.
The second function is, I want to import the file I want to send and send it to another device through Bluetooth.
These two can be run on different projects, but two cannot be executed within one project.
this is my error "Caused by: android.os.FileUriExposedException: file:///sdcard/Download/example.txt exposed beyond app through ClipData.Item.getUri()"
I'll put a piece of the code up.
CameraActivity.class
private void sendTakePhotoIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
try {
photoFile = createImageFile();
} catch (IOException ex) {
// Error occurred while creating the File
}
if (photoFile != null) {
photoUri = FileProvider.getUriForFile(this, getPackageName(), photoFile);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri);
startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
}
}
}
Bluetooth.class
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == DISCOVER_DURATION && requestCode == REQUEST_BLU) {
Intent i = new Intent();
i.setAction(Intent.ACTION_SEND);
i.setType("*/*");
File file = new File(exist);
i.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));
PackageManager pm = getPackageManager();
List<ResolveInfo> list = pm.queryIntentActivities(i, 0);
if (list.size() > 0) {
String packageName = null;
String className = null;
boolean found = false;
for (ResolveInfo info : list) {
packageName = info.activityInfo.packageName;
if (packageName.equals("com.android.bluetooth")) {
className = info.activityInfo.name;
found = true;
break;
}
}
if (!found) {
Toast.makeText(this, "Bluetooth not been found", Toast.LENGTH_LONG).show();
} else {
i.setClassName(packageName, className);
startActivity(i);
}
}
} else {
Toast.makeText(this, "Bluetooth is cancelled", Toast.LENGTH_LONG).show();
}
}
Manifests.xml - provider
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.tech.www.communicatever_110"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="#xml/file_paths" />
</provider>
res/xml/file_paths.xml
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path name="my_images" path="Android/data/com.tech.www.communicatever_110/files/Pictures" />
If you need any more code, please request it.

I know this answer is quite late but let's hope it helps someone in future.
First of all in your CameraActivity.class you need to concatenate ".providers" with your package name (it should look like this)
photoUri = FileProvider.getUriForFile(this, getPackageName() + ".providers", photoFile);
And you'll have to do the same inside Manifest.xml (add .providers with your package name)
android:authorities="com.tech.www.communicatever_110.providers"
Thirdly, inside res/xml/file_paths.xml you can use name="my_images" only if you're using Context.getFilesDir() (i.e. scoped storage) but if you're using Environment.getExternalStorageDirectory() then you must use name="external_files".
Last but not least, you might not need to put the whole path inside file_paths.xml
path="Android/data/com.tech.www.communicatever_110/files/Pictures"
Try replacing it with: path="."

when I use Intent.ACTION_SEND to Facebook and Instagram,The Results appears ActivityNotFoundException

enter image description here
this is the Exception!
These are codes!This is not certain happen,in service,log display of the devices are samsung,and system is greater than android 6.0. I don't know the reasons,Could you help me,Thanks guys
public static void share(Context context, String packageName, String path, String content) {
Intent intent = new Intent(Intent.ACTION_SEND);
if (TextUtils.isEmpty(path)) {
intent.setType("text/plain"); //
} else {
File file = new File(path);
if (file.exists() && file.isFile()) {
intent.setType("image/*");
Uri uri = Uri.fromFile(file);
intent.putExtra(Intent.EXTRA_STREAM, uri);
}
}
intent.putExtra(Intent.EXTRA_TEXT, content);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (!TextUtils.isEmpty(packageName)) {
intent.setPackage(packageName);
context.startActivity(intent);
return;
}
context.startActivity(Intent.createChooser(intent, ""));
}

The problem is that the OS didn't find any activities which can handle this ACTION_SEND. Surround this kind of code with a try/catch, since you can not be sure if there exists an activity that can handle your intent.
And try to install at least one app that can handle the ACTION_SEND, then try again, and see if it works for you

Before you calling startActivity(intent), you should use intent.resolveActivity(getPackageManager()) != null) to check if there is an activity could resolve this intent.

How to launch .apk for installation on Button Click? [duplicate]

Is possible to programmatically install a dynamically downloaded apk from a custom Android application.

You can easily launch a market link or an install prompt:
Intent promptInstall = new Intent(Intent.ACTION_VIEW)
.setDataAndType(Uri.parse("file:///path/to/your.apk"),
"application/vnd.android.package-archive");
startActivity(promptInstall);
source
Intent goToMarket = new Intent(Intent.ACTION_VIEW)
.setData(Uri.parse("market://details?id=com.package.name"));
startActivity(goToMarket);
source
However, you cannot install .apks without user's explicit permission; not unless the device and your program is rooted.

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);
I had the same problem and after several attempts, it worked out for me this way. I don't know why, but setting data and type separately screwed up my intent.

The solutions provided to this question are all applicable to targetSdkVersion s of 23 and below. For Android N, i.e. API level 24, and above, however, they do not work and crash with the following Exception:
android.os.FileUriExposedException: file:///storage/emulated/0/... exposed beyond app through Intent.getData()
This is due to the fact that starting from Android 24, the Uri for addressing the downloaded file has changed. For instance, an installation file named appName.apk stored on the primary external filesystem of the app with package name com.example.test would be as
file:///storage/emulated/0/Android/data/com.example.test/files/appName.apk
for API 23 and below, whereas something like
content://com.example.test.authorityStr/pathName/Android/data/com.example.test/files/appName.apk
for API 24 and above.
More details on this can be found here and I am not going to go through it.
To answer the question for targetSdkVersion of 24 and above, one has to follow these steps:
Add the following to the 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. Add the following paths.xml file to the xml folder on res in src, main:
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path
name="pathName"
path="pathValue"/>
</paths>
The pathName is that shown in the exemplary content uri example above and pathValue is the actual path on the system.
It would be a good idea to put a "." (without quotes) for pathValue in the above if you do not want to add any extra subdirectory.
Write the following code to install the apk with the name appName.apk on the primary external filesystem:
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();
No permission is also necessary when writing to your own app's private directory on the external filesystem.
I have written an AutoUpdate library here in which I have used the above.

Well, I dug deeper, and found sources of PackageInstaller application from Android Source.
https://github.com/android/platform_packages_apps_packageinstaller
From manifest I found that it require permission:
<uses-permission android:name="android.permission.INSTALL_PACKAGES" />
And the actual process of installation occurs after confirmation
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);

I just want to share the fact that my apk file was saved to my app "Data" directory and that I needed to change the permissions on the apk file to be world readable in order to allow it to be installed that way, otherwise the system was throwing "Parse error: There is a Problem Parsing the Package"; so using solution from #Horaceman that makes:
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);

This can help others a lot!
First:
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();
}
}
Second: For android 7 and above you should define a provider in manifest like below!
<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>
Third: Define path.xml in res/xml folder like below!
I'm using this path for internal storage if you want to change it to something else there is a few way! You can go to this link:
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>
Forth: You should add this permission in manifest:
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES"/>
Allows an application to request installing packages. Apps targeting APIs greater than 25 must hold this permission in order to use Intent.ACTION_INSTALL_PACKAGE.
Please make sure the provider authorities are the same!

In Android Oreo and above version we have to approach different methods to install apk programatically.
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());
}
}
In Oreo and above version we need unknown resource installation permission. so in activity result u have to check the result for the permission
#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;
}
}

Do not forget to request permissions:
android.Manifest.permission.WRITE_EXTERNAL_STORAGE
android.Manifest.permission.READ_EXTERNAL_STORAGE
Add in AndroidManifest.xml the provider and permission:
<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>
Create XML file provider 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>
Use below example code:
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();
}
}
}
...
}

Another solution that doesn't not require to hard-code the receiving app and that is therefore safer:
Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
intent.setData( Uri.fromFile(new File(pathToApk)) );
startActivity(intent);

It's worth noting that if you use the DownloadManager to kick off your download, be sure to save it to an external location e.g. setDestinationInExternalFilesDir(c, null, "<your name here>).apk";. The intent with a package-archive type doesn't appear to like the content: scheme used with downloads to an internal location, but does like file:. (Trying to wrap the internal path into a File object and then getting the path doesn't work either, even though it results in a file: url, as the app won't parse the apk; looks like it must be external.)
Example:
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);

Came at this some two months ago and supposedly figured it out. Came back today and couldn't make heads or tails of it. Nothing had changed in my setup as far as I am aware, so apparently whatever past me had come up with wasn't robust enough for present me. I finally managed to get something working again, so documenting it here for future me and anyone else who might stand to benefit from yet another attempt.
This attempt represents a direct Xamarin C# translation of the original Android Java Install APK - Session API example. It could probably use some additional work, but it's at least a start. I have it running on an Android 9 device, though I have the project targetting Android 11.
InstallApkSessionApi.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>
What I particularly like about this approach is that it does not require any special work in the manifest - no broadcast receivers, file providers, etc. Granted, this takes as its source some APK in the app's assets, whereas a more useful system will probably use some given APK path. I imagine that will introduce a certain level of additional complexity. In addition, I never ran into any issues here (at least as far as I could tell) with the Xamarin GC closing streams before Android was done with them. Nor did I have any issues with the APK not being parsed. I made sure to use a signed APK (the one generated by Visual Studio when deploying to the device worked just fine), and again I did not run into any file access permission issues simply due to using an APK from the app's assets in this example.
One thing that some of the other answers here provided was the idea of making the sideloading permission grant more streamlined. The answer by Yabaze Cool provided this feature:
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);
...
When I tested my translation, I uninstalled both the launcher demo and the app it installed. Not providing the check to canRequestPackageInstalls made it to where I had to manually press an additional Settings button to take me to the same dialog as does the ACTION_MANAGE_UNKNOWN_APP_SOURCES intent above. So adding this logic can help to somewhat simplify the installation process for the user.

Yes it's possible. But for that you need the phone to install unverified sources. For example, slideMe does that. I think the best thing you can do is to check if the application is present and send an intent for the Android Market. you should use something the url scheme for android Market.
market://details?id=package.name
I don't know exactly how to start the activity but if you start an activity with that kind of url. It should open the android market and give you the choice to install the apps.

Just an extension, if anyone need a library then this might help. Thanks to Raghav

try this
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);

UpdateNode provides an API for Android to install APK packages from inside another App.
You can just define your Update online and integrate the API into your App - that's it.
Currently the API is in Beta state, but you can already do some tests yourself.
Beside that, UpdateNode offers also displaying messages though the system - pretty useful if you want to tell something important to your users.
I am part of the client dev team and am using at least the message functionality for my own Android App.
See here a description how to integrate the API

Try this
- Write on Manifest:
uses-permission android:name="android.permission.INSTALL_PACKAGES"
tools:ignore="ProtectedPermissions"
Write the Code:
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);

First add the following line to AndroidManifest.xml :
<uses-permission android:name="android.permission.INSTALL_PACKAGES"
tools:ignore="ProtectedPermissions" />
Then use the following code to install 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);

Based on answer #Uroš Podkrižnik.
Installing the application through the APK may differ for various versions of android (API Levels 21-30):
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()
}
}
Create and register receiver:
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
}
}
Intercept the result of the permission request WRITE_EXTERNAL_STORAGE:
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
}
}
}
Intercept the result of user selection in security settings:
#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
}
}
Add to your manifest:
<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>
Add provider_paths.xml file to res/xml:
<?xml version="1.0" encoding="utf-8"?>
<paths>
<external-path name="external_files" path="."/>
</paths>
For android API level = 30, return from security settings does not work,
so used installation via browser:
try {
val intent = Intent(Intent.ACTION_VIEW)
intent.data = Uri.parse("https://path_to_file/application.apk")
startActivity(intent)
activity?.finish()
} catch (e: ActivityNotFoundException) { }

Android intent - pass uri to camera

I am trying to test the sample code related to capturing an image via camera. The documentation says that a URI can be passed as an extra in the intent were the camera will save the image.
I tried the following :
// image1 doesn't exist
File file = new File(getFilesDir() + "/image1");
Uri uri = Uri.fromFile(file);
Intent i = new Intent();
i.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
i.putExtra(MediaStore.EXTRA_OUTPUT, uri);
if (i.resolveActivity(getPackageManager()) != null) {
startActivityForResult(i, 1337);
}
I am trying to place the image as a file named image1 in my files directory. I am testing this on the genymotion VM. I have tested getting the image as a bitmap in the return Intent, but when I use the above approach, the camera app gets stuck when I click done after taking the picture.
I'm guessing it has something to do with URI permissions. Do I need to add some permissions in the intent like in data sharing ?
Edit:
I tried to follow these instructions, except I want to save the photo in my app's directory, so I tried the following but it doesn't work (the app has camera permission) :
String imagePath = null;
try {
File image = File.createTempFile("testImage", ".jpg", getFilesDir());
imagePath = "file://" + image.getAbsolutePath();
}
catch(Exception e){
Toast.makeText(getApplicationContext(), "" + e.getMessage(), Toast.LENGTH_SHORT).show();
}
File file = new File(imagePath);
Uri uri = Uri.fromFile(file);
Intent i = new Intent();
i.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
i.putExtra(MediaStore.EXTRA_OUTPUT, uri);
if (i.resolveActivity(getPackageManager()) != null) {
startActivityForResult(i, 1337);
}
I also have onActivityResult(), but its no use, as the camera app gets stuck as explained above.
Also, an additional question : When I don't have camera permission in my test app, I can still invoke the camera and the get the bitmap in intent extra, how so ? Is this something specific to genymotion VM ?

Make sure you have these permissions for your manifest
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
Everything looks good to me. Do you have onActivityResult()
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == 1) {
if(resultCode == RESULT_OK){
String result=data.getStringExtra("result");
}
if (resultCode == RESULT_CANCELED) {
//Write your code if there's no result
}
}
}//onActivityResult