I have an app I'm currently working on based on the HTC Open Sense SDK for android. However my biggest problem is keeping up with the device checker through the Google Play dev console to only allow certain devices to download the app. My biggest reason is that people will rate my app so low on the scale and say it sucks, but the problem is that they don't read the requirements - if you use an Lg G2 to try and launch an app made for an HTC ONE that requires Sense, it's going to crash.
So, how would i go about building a helper class that would check the device's model via build.prop (without needing root privileges) before opening/starting the main activity, and give the user a notification if the device was incapable of launching the app, and with devices that are capable of launching it, just continue the process of opening the app?
Related
I am working on an Android application This application is a parental advisor application and it will be installed on the parents' phone and on the child's phone.
My question is how will the screenshot be taken from the boy's phone without his knowledge?
thats pretty high privilege, which need special permissions. you probably have to create AccessibilityService, but be aware, that Google Play may refuse your app from publish in their store. btw. you can't start this Service from the code, user must enable it in system Settings
I find this question a couple places on the web, but never with a good answer. Let me be specific in the questions asked.
I want to build a custom Android ROM which only features one app. This app is not to interact with any hardware (per now). This app will be launched on the start up of the device. No locked-screen. The device will have to restart if the app malfunctions.
A resource told me that you can change the launcher app of the ROM.
-> Does this mean that the home screen, the one which displays all apps on our phones, is merely another app? If so, can you simply change the launcher app as it is stated here? What were to happen if this app fails?
If this is the case, it would solve the entire issue.
If not, how do you go about making this sort of project? It includes
Making an app on AOSP
Refuse users to leave the app or interact with anything else
Making this app part of the boot-up process
Remove locked screen
Make the app a dependency of the OS (to force shutdown if malfunction)
Thanks in advance for any replies
I just found Android have a topic about dedicated devices (formerly called corporate-owned single-use, or COSU) are a subset of company-owned devices that serve a specific purpose. maybe that can meet your requirement.
BTW, After into the sub-topic lock task mode that mentions about set DPC whitelist APPs and the device policy controller (DPC) needs setup by other steps.... FYR~
I would like to write an application which can programatically generate touch events on the phone.
I have already tried this methods:
adb : adb swipe and so on... It requires USB cable and connect the phone to pc
adb ON TCPIP: same
My problem with adb is to require so much presetting by user and I don't want to make the user to learn it. I have already made an application which use adb, but it's difficult for the user to set up properly :(
I have heard and I tried to sign my application with platform sign, but it's not good for me, because I would like to publish my app on android market and it is not a system application...
I would like to find a way to achieve this in a single application which can produce touch outside of the app (from background) and I would like to publish on market.
I have found this application: https://play.google.com/store/apps/details?id=com.teamviewer.quicksupport.samsung which can basically do this. Because when I click on my computer, it send a message to the phone and the phone make the touch on the screen. How and with what privileges can teamviewer do it?
Please give me some advice about it.
I would like to find a way to achieve this in a single application which can produce touch outside of the app (from background) and I would like to publish on market.
This is not possible, outside of what little input faking can be done by an accessibility service.
How and with what privileges can teamviewer do it?
If your read that Play Store listing, you will notice that it only works with Samsung devices. That is because the makers of TeamViewer struck a deal with Samsung to enable this sort of integration. Similarly, the TeamViewer team struck deals with a few other device manufacturers. However, they did not do so with all manufacturers, and so TeamViewer does not work on all devices.
Have a look here .This might be useful.
InputInjector
Android library that eases the process of injecting InputEvents (MotionEvent, KeyEvent) to you Android app. The library uses internal API calls to inject events and depend on the accessability of these. This library will therefore not work on all devices but theoretically support Android 2.3 and forward (API level 9-18+).
Androd 2.3 (API level 9-15)
In older versions of Android we envoke the same system calls as used by the Instrumentation framework.
Permission No special permission needs to be set.
Androd 4.1.2 (API level 16 and forward)
As of API level 16 we have access to the InputManager class. We use this as the basis for the input injection.
Permission Using InputManager for injection requires setting permission android.permission.INJECT_EVENTS in your manifest.
Using this permission may require altering Lint Error Checking in order to be able to compile. In Eclipse this is done by going to Window->Preferences->Android->Lint Error Checking and then finding ProtectedPermissions and setting severity to something else than error.
NOTE: In order to inject events to other apps using InputManager, your apk must be signed with system level certificate.
https://github.com/arnebp/android-inputinjector
As all users of Windows Phone 10 know, the Bluetooth connectivity on this system is cutted to the simplest for end-user, which ends for programmers as a horror to create anything. When connecting to a device, system automatically looks for a "functions" that device has, for ex. audio. The questions are as following:1. How to define a function like that on external Android device? The main goal is, to control all types of music playback from it (ex. Groove music playing)2. Where can i find a list of things like this, for future app functions?
And to get ahead of answers, I already tried the easier ways, which came to nothing due to UWP limits of controlling other apps playback.
Main target of project is to make a xamarin c# (or java, I can "translate" from one to another with ease) android app for a smartwatch and in c# uwp for windows phone to do most common tasks, like - as mentioned before - music playback control and notifications reciever.
Based on your description, you want to develop an Android app to send Bluetooth command to control the music player of a windows phone device, then it depends on your Bluetooth of your android device.
But control music player by Bluetooth need the profile Avrcp I have check the google Bluetooth API I did not find the profile of Avrcp, I think it is may be hard to send the Avrcp command at the android application level.
And Android is source opened, many device factories prefer to customize their own Android system, it is possible that the device uses a Bluetooth module as a serial device, then the official Bluetooth APIs are not suitable for this scenario, the develop protocol of this Bluetooth module is in need.
In Android/Java, Is there any code example to capture the screenshot of a computer with good frames per second programatically and create video?
I'd like a tutorial or full source code to do this. I'd like the program to work with and without the device having been "rooted".
There is app in the play store called Screencast Video Recorder that does this. But you need to ROOT the device for it to work, so I know it can be done.
What's the best way to capture android screenshot and create a video programmatically on a non-rooted device?
There is an app called Telecine that is open source that allows you to record screens - the code can be found at https://github.com/JakeWharton/Telecine. All credit is to Jake Wharton.
If you need an example, you can find one at Commonsware's github page - Mark Murphy has provided a sample app for both screen capture and screen recording using the MediaProjection APIs.
you can capture the screen via using DDMS as adb runs and has permission to the framebuffer:
follow this link for more details :
http://thetechjournal.com/electronics/android/how-to-capture-screenshots-and-record-video-on-android-device.xhtml
ALSO
check this links may be get some ideas about what you need :
http://answers.oreilly.com/topic/951-how-to-capture-video-of-the-screen-on-android/
http://www.mightypocket.com/2010/09/installing-android-screenshots-screen-capture-screen-cast-for-windows/
and check this project :
http://sourceforge.net/projects/ashot/
hope this help .
Check the following link
https://code.google.com/p/java-remote-control/
in this project the owner has created a java remote control i.e. he has captured the images from the remote computer and transfer to server and convert it to movies with different format all you need to understand what he has done and implement the same for all your needs. you can access the full source code with SVN client from the following URL
http://java-remote-control.googlecode.com/svn/trunk/
Also you can look for the Remote class in java which provides createScreenCapture method
As of Android 4.4, there is a screen recording feature accessible via adb.
http://developer.android.com/tools/help/adb.html#screenrecord
The screenrecord command is a shell utility for recording the display of devices running Android 4.4 (API level 19) and higher. The utility records screen activity to an MPEG-4 file, which you can then download and use as part of a video presentation. This utility is useful for developers who want to create promotional or training videos without using a separate recording device.
Try this application from the market
https://play.google.com/store/apps/details?id=com.ms.screencastfree
** Does not work on Galaxy Nexus or Tegra 2/3 yet **
EDIT 28/11/2014
Lollipop has been released and provides a new Screen recording API
http://developer.android.com/about/versions/android-5.0.html#UI
Screen capturing and sharing
Android 5.0 lets you add screen capturing and screen sharing
capabilities to your app with the new android.media.projection APIs.
This functionality is useful, for example, if you want to enable
screen sharing in a video conferencing app.
The new createVirtualDisplay() method allows your app to capture the
contents of the main screen (the default display) into a Surface
object, which your app can then send across the network. The API only
allows capturing non-secure screen content, and not system audio. To
begin screen capturing, your app must first request the user’s
permission by launching a screen capture dialog using an Intent
obtained through the createScreenCaptureIntent() method.
For an example of how to use the new APIs, see the MediaProjectionDemo
class in the sample project.