Error in Manifest.xml when adding PACKAGE_USAGE_STATS [Android Lollipop] - android

I am trying to use "android.permission.PACKAGE_USAGE_STATS" in my app. Here it says that NOTE: This API requires the permission android.permission.PACKAGE_USAGE_STATS, which is a system-level permission and will not be granted to third-party apps. However, declaring the permission implies intention to use the API and the user of the device can grant permission through the Settings application.
It seems that I will need the user to explicitly give my app the permission to give access to the access the usage stats.
In addition, I used the intent code below to open the screen to allow user to give access to my app, but my app is not in the list.
Code I used:
Intent intent = new Intent(Settings.ACTION_USAGE_ACCESS_SETTINGS);
startActivity(intent);
When *startActivity(intent)' is fired (or going to *Settings>Security>Apps with Usage Access), a blank screen below pops up, my app is not part of it.
Bottom line question is -- How to use UsageStatsManager in Android Lollipop? Anyone tried it?

This is what worked for me.
<uses-permission xmlns:tools="http://schemas.android.com/tools"
android:name="android.permission.PACKAGE_USAGE_STATS"
tools:ignore="ProtectedPermissions" />

You can simply make this on the manifest, ignoring just this permission error:
<uses-permission
android:name="android.permission.PACKAGE_USAGE_STATS"
tools:ignore="ProtectedPermissions"/>

The AndroidManifest.xml error can be fixed by disabling lint errors. Specifically
Security - SignatureorSystemPermissions
I guess after that the settings app will show your app.

Related

android.permission.WRITE_SETTINGS cant use in manifest

Can't use android.permission.WRITE_SETTINGS in android manifest. im trying to turn on airplane mode by programatticaly and I can't add this permission in manifest.
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
The Android docs says:
Note: If the app targets API level 23 or higher, the app user must explicitly grant this permission to the app through a permission management screen. The app requests the user's approval by sending an intent with action ACTION_MANAGE_WRITE_SETTINGS. The app can check whether it has this authorization by calling Settings.System.canWrite().
So you have to request the user's approval explicitly by sending an intent with action ACTION_MANAGE_WRITE_SETTINGS.
What is the error message that you are getting? Is the app crashing when you try to open it or set the airplane settings? If you are targetting >API 23, you need to explicitly ask for permissions during runtime, this is a change from earlier versions when the permission was granted once at install time.
This link talks abou this:
https://developer.android.com/reference/android/Manifest.permission.html#WRITE_SETTINGS

How to request permission on Android Things?

I'm trying to write to a value on AT. I've already declared required permission as follow in manifest,
<uses-permission android:name="android.permission.WRITE_SETTINGS"/>
And try to request permission at run-time, AT shows windows regarding permission setup. However the switch is not clickable. Regarding AT document
Requesting Permissions at Runtime is not supported because embedded
devices aren't guaranteed to have a UI to accept the runtime dialog.
Declare permissions that you need in your app's manifest file. All
normal and dangerous permissions declared in your app's manifest are
granted at install time.
However Settings.System.canWrite() always returns false.
Are there any special methods to enable permission WRITE_SETTINGS?
Like you said, the documents say:
Declare permissions that you need in your app's manifest file. All normal and dangerous permissions declared in your app's manifest are granted at install time.
Therefore you don't see the normal Android permissions UI.
From the release notes:
Dangerous permissions requested by apps are not granted until the next device reboot. This includes new app installs and new elements in existing apps.
So try powering off and on your Android Things device
After install application with the statement on AndroidManifest.xml as follow
<uses-permission android:name="android.permission.WRITE_SETTINGS"/>
It needs to be also run Settings as follow via adb
adb shell am start -S com.android.settings/.Settings
Then click APPS>YOUR_APP, then click permission.
Now the switch is clickable. So AT not granted to permission. It needs to be granted manually.
This permission is having Protection level: signature.Which means this permission is only granted to system apps.
Please find the below screenshot for your reference :

android.permission.MODIFY_PHONE_STATE" not worked properly

I had already added this permission in my Manifest
<uses-permission android:name="android.permission.MODIFY_PHONE_STATE" />
But it will not give me permission to cut the incoming call, I can receive the call.when I'm try to cut the call it give me
java.lang.SecurityException: Neither user 10037 nor current process has android.permission.MODIFY_PHONE_STATE.
I have gone through so many blogs,but none of work.
In some of the emulator its working fine.
MODIFY_PHONE_STATE is a system-only permission, so you can not access or use this permission in your app,
Check it out!
Place your app in the /system/priv-app folder instead of /system/app, when using Android 4.3 or higher.

How to use Android permissions and make them optional for devices that do not have that feature

I have an app that plays audio. I recently added the permission:
android.permission.READ_PHONE_STATE
so I could tell when a call was coming in so I could mute the audio during the call. I also added the permission:
android.permission.CALL_PHONE
So the user could press a icon to call a phone number. These were minor changes and really don't affect how most people use the app. After I published it I now have users who have tablets that don't have phone capability that they can not download the update and new users who have tablets do not see it in the play store anymore.
I read several posts about using this in the manifest instead of the permissions:
<uses-feature android:name="android.hardware.telephony" android:required="false">
But when I try to test the app on the device I get this error:
Caused by: java.lang.SecurityException: Neither user 10022 nor current process has android.permission.READ_PHONE_STATE.
Does anyone have any suggestions on how I can add these minor features to the app without alienating all of the non-phone users?
I read several posts about using this in the manifest instead of the permissions
You use <uses-feature> in addition to the permissions, not instead of the permissions.
Quoting the documentation:
For any of the permissions below, you can disable filtering based on the implied feature by explicitly declaring the implied feature explicitly, in a element, with an android:required="false" attribute.
So, add back your permissions. Then, use PackageManager and hasSystemFeature() at runtime, to see whether the device has android.hardware.telephony, so you can react as needed.
As #CommonsWare suggested use the following code to check if the device has telephony features available using the PackageManager
PackageManager pm = getBaseContext().getPackageManager();
pm.hasSystemFeature(PackageManager.FEATURE_TELEPHONY);

Android Hiding / Disabling Apps from Menu Without Root

I am developing an Android application that could manage the applications installed on your phone without root permissions.
I have already completed most of the features but I am stuck on one feature.
I have to hide a specific application that the user chooses from the Menu.I cannot achieve that however I try.
I already tried
PackageManager p = getPackageManager();
p.setApplicationEnabledSetting(packageNameOfApp, PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP);
But I am getting a permission denied error... How can i over come this please Help
This is my Manifest Permissions
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.CHANGE_COMPONENT_ENABLED_STATE" />
I have already tried adding
android:sharedUserId="android.uid.system"
tag to Manifest but givesout error that looks like this
INSTALL_FAILED_SHARED_USER_INCOMPATIBLE
I am sorry for posting such as long question but i was trying to be as detailed as possible.
Any help would be greatly appreciated.
Thanks
Take a look at the android manifest permissions documentation for the CHANGE_COMPONENT_ENABLED_STATE flag, and note the following phrase:
Not for use by third-party applications.
As far as I can imagine, sharing the system user ID would violate most of the security that the OS provides.
There is another solution: you've likely used launcher applications (Apex, Nova Launcher) that run in place of the OEM/Google launcher. These applications provide their own applications list, and allow hiding of apps without disabling them. It's clear that this is not what you're trying to do, but creating a custom launcher and maintaining your own app list may be the closest you can get without root.

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