Tag: android

Entries for tag "android", ordered from most recent. Entry count: 2.

Warning! Some information on this page is older than 5 years now. I keep it for reference, but it probably doesn't reflect my current knowledge and beliefs.

Pages: 1

# How to Disable Notification Sound in Messenger for Android?

Thu
09
Jul 2020

Applications and websites fight for our attention. We want to stay connected and informed, but too many interruptions are not good for our productivity or mental health. Different applications have different settings dedicated to silencing notifications. I recently bought a new smartphone and so I needed to install and configure all the apps (which is a big task these days, same way as it always used to be with Windows PC after "format C:" and system reinstall).

Facebook Messenger for Android offers an on/off setting for all the notifications, and a choice of the sound of a notification and an incoming call. Unfortunately, it doesn't offer an option to silence the sound. You can only either choose among several different sound effects or disable all notifications of the app entirely. What if you want to keep notifications active so they appear in the Android drawer, use vibration, get sent to a smart band, and you can hear incoming calls ringing, you just want to mute the sound of incoming messages?

Here is the solution I found. It turns out you can upload a custom sound file to your smartphone and use it. For that I generated a small WAV file - 0.1 seconds of total silence. 1) You can download it from here:

Silence_100ms.wav (8.65 KB)

2) Now you need to put it into a specific directory in the memory of your smartphone, called "Notifications". To do this, you need to use an app that allows to freely manipulate files and directories, as opposed to just looking for specific content as image or music players do. If you downloaded the file directly to your smartphone, use free Total Commander to move this file to the "Notifications" directory. If you have it on your PC, MyPhoneExplorer will be a good app to connect to your phone using a USB cable or WiFi network and transfer the file.

3) Finally, you need to select the file in Messenger. To do this, go to its settings > Notifications & Sounds > Notification Sound. The new file "Silence_100ms" should appear mixed with the list of default sound effects. After choosing it, your message notifications in Messenger will be silent.

Facebook Messenger Android Notification Sound Silence

There is one downside of this method. While not audible, the sound is still playing on every incoming message, so if you listen to music e.g. using Spotify, the music will fade out for a second every time the sound is played.

Comments | #android #mobile Share

# Beginning with OpenGL ES on Android

Thu
21
Oct 2010

I've started learning programming for Android. It's (probably) nothing commercial, I just love to learn new technologies and APIs while I have not much experience in either Java, OpenGL ES or mobile technologies at all. The first thing I did was... buying a phone - LG GT540 in my case. It has Android 1.6 (upgrade to 2.1 is scheduled for this year).

Android is a nice platform. Anyone can code for his phone in either Windows or Linux, using Java language (native code development is also possible). To start my coding, I needed to install JDK (SDK for Java), Android SDK, Java version of Eclipse 3.5 (they say Android SDK is not fully compatible with new Eclipse 3.6) and Eclipse JDT plugin to connect them all. Android Developers website does a great job explaining all the steps required to setup the whole development environment so I've came across not so many issues to get annoyed as I often get when installing some C/C++ stuff :)

I've read a bit about the fundamentals of developing applications for Android and I like the API. All these ideas like Activity, Service, Intent, View, Widget, Task etc. seem very well designed. But just like PC game developers learn WinAPI to only initialize an empty window and launch DirectX or OpenGL in it, I went straight to OpenGL on my Android. Android 1.6 has OpenGL ES 1.1, which in turn is the embedded equivalent for OpenGL 1.5. This 3D API has no shaders, so all the graphics has to be done using fixed function pipeline, including MODELVIEW and PROJECTION matrices, 2 textures with register combiners, 8 dynamic per-vertex lights, 1 user clip plane, fog etc. - something like on the old good GeForce 2 MX :)

It's easy to start using OpenGL for someone who has experience in DirectX because all the concepts that are so diffcult to understand at the beginning of the game programming adventure stay the same - like 3D coordinate system, vertex, triange, matrix, texture and so on. Some things are only reversed - textures are addressed from left-bottom corner in OGL, matrices are stored in column-major order, matrix multiplication is right-to-left like Point2 = Xform2 * Xform1 * Point1, post-projective space is -1..1, -1..1, -1..1, coordinate system is right-handed so Z points to the viewer, angles are given in degrees, counterclockwise oriented triangles are considered front-facing by default and so one. Some objects have also different names, so in OGL there is "model" not "world" matrix, "fragment" not "pixel" operation etc.

Here is the list of Internet sources I already know about and I've been learning from:

Now you can expect more entries about Android development on my blog :)

Comments | #android #opengl #mobile Share

Pages: 1

[Download] [Dropbox] [pub] [Mirror] [Privacy policy]
Copyright © 2004-2020