Use an older example that does not rely on Android 6:
http://toastdroid.com/2014/09/22/android-bluetooth-low-energy-tutorial/
On Friday, October 14, 2016 at 2:21:10 PM UTC-6, Александр Сергеевич Джус
wrote:
>
> Hello, I want to use Bluetooth 4.0 to connect the Vert device. The problem
>
I find it much less trouble to forget about the emulator and the AVD, and
just test on a connected actual Android device with an appropriate USB
driver for that device.
On Sunday, October 2, 2016 at 9:24:40 PM UTC-6, warren nazareno wrote:
>
> Hi guys.
>
> I'm new to android.
>
> I'm trying to
It depends on the app. Some step counters use only the accelerometers.
But some might use the gyroscopes as well. But I would think that a
properly designed app should report any missing hardware capabilities, or
at least fail with an error message.
On Tuesday, October 4, 2016 at 5:58:09
If the Windows display is set to the option of 125% (medium), vs. smaller
(100%), the bottom part of the New Project wizard cannot be seen. It is
essential to see it because that's where the "Next" button is to create a
new project. None of the other windows in Android Studio have this
The group rules say that job postings are considered spam and posters can
be banned without warning. Moderators, please *do your job*. This group
is being ruined by being flooded with job postings. It makes it very hard
to even find the technical postings amidst all the spam, even if I never
Immediately after installing my app (side-loaded APK file), the package
installer gives the option of "Done" or "Open". If I select "Open", it
will immediately launch my app's main activity. From that main activity in
my app, I start a second activity with startActivityForResult. The second
I had a problem with 6.0 because I was using the Mac-ID of the wi-fi device
to construct a unique ID for each specific device (It is the way my
side-loaded app does licensing). Starting with 6.0, the MAC-ID is no
longer available. The OS returns a constant with lots of zeroes. I had to
As I explained in another thread, I was having trouble debugging on a
particular device - a Lenovo Tab 2 A8 tablet. After much searching, I
found a way that worked in my case to make the Lenovo tablet use the google
USB driver. Here is how I did it.
If you find the google ADB USB driver in
Well, I didn't find a way to debug without a USB driver, but I did find a
way to get the Lenovo tablet to use the Google USB driver. See the other
thread I will post shortly on how that can be done.
-Robert Scott
Hopkins, MN
On Monday, March 28, 2016 at 11:35:30 AM UTC-6, RLScott wrote:
>
>
On one particular device - a Lenovo tablet running Android 5.0 - my app
crashes on launch. On every other device I own, the app runs fine.
Unfortunately there is no OEM USB driver for debugging, so the only way I
have of running my app is making an APK file and copying it over and
installing
OK, I think I figured it out. When the AlertDialog is created, I use:
numFoundDisplay = (TextView)layout.findViewById(R.id.numFound);
to get a reference to that TextView in the AlertDialog. That reference
(numFoundDisplay) is owned by the Activity, and as long as that Activity
lives and
What is the correct way to update a TextView after a callback in the
following scenario:
I have an activity that extends ListActivity. At some point that activity
creates an AlertDialog to allow the user the option of filtering the list
for items that contain a certain String (because the
Get the list of paired bluetooth devices like this:
private final BluetoothAdapter mAdapter = BluetoothAdapter.getDefaultAdapter();
Set pairedDevices = mAdapter.getBondedDevices();
int numberOfDevices = pairedDevices.size();
if (numberOfDevices > 0) {
for (BluetoothDevice device :
New information: The messages I reported do not appear to be the result of
my previous attempt at adding something from org.apach.http... I just
imported another project from Eclipse to Android Studio, and in this
project I never message around with HTTP stuff. Yet the same message
I briefly added a HTTP library from org.apache.http... to try some things
out, and now I want to remove it as I no longer reference it in my code. I
removed the reference in the Project app module Dependencies and deleted
the apache module itself.
Now the project builds without errors, as
I have Eclipse on my Windows 7 system and it is working fine (well, as fine
as Eclipse is capable of running..) I want to try changing over to Android
Studio, but I don't want to burn my bridges behind me. Can the Android
Studio installation be done in such as way that there is no possible
ct the condition and
> work around it somehow. If it were me, I would obtain a G3 and start
> testing ...
>
>
>
> On Tue, Feb 2, 2016 at 6:08 AM, 'RLScott' via Android Developers <
> android-d...@googlegroups.com > wrote:
>
>> The theory says if the initial hardwa
'm wondering if there is some sort of odd DSP filtering being applied in
> the firmware.
>
> On Tue, Feb 9, 2016 at 8:59 AM, 'RLScott' via Android Developers <
> android-d...@googlegroups.com > wrote:
>
>> OK, I finally got myself a cheap LG G3 from eBay and did some t
quot; mic stream?
> I'm wondering if there is some sort of odd DSP filtering being applied in
> the firmware.
>
> On Tue, Feb 9, 2016 at 8:59 AM, 'RLScott' via Android Developers <
> android-d...@googlegroups.com > wrote:
>
>> OK, I finally got myself a cheap LG G3 from
t; and "Main" mics - the Front one is typically next to
> the front facing camera lens, and makes sense for video ...)
>
>
>
> On Tue, Feb 9, 2016 at 1:19 PM, 'RLScott' via Android Developers <
> android-d...@googlegroups.com > wrote:
>
>> No, I don't know
On Sunday, January 31, 2016 at 1:39:58 PM UTC-6, Julian Bunn wrote:
>
> If you are only getting 8000 sps then even with interpolation to 44100 you
> would never see any signal above 4000Hz in an FFT, right? Are you windowing
> the FFT?
>
No, the theory says if the initial hardware sampling is
The theory says if the initial hardware sampling is done at 8000 samples
per second, the aliasing is already "frozen" into the sampled data. You can
see that by observing that 4100 Hz and 3900 Hz look exactly the same -
produce exactly the same samples - after they are sampled at 8000 samples
But are you sure you are getting the sample rate you asked for? How would
you know? As you can see from my very first posting, all the checks you
are doing here work fine for me too, and I actually do get the number of
samples per second I ask for. But they are not true samples. They have
I am calling
AudioRecord.getMinBufferSize(44100,AudioFormat.CHANNEL_IN_MONO,AudioFormat.ENCODING_PCM_16BIT)
and using the returned minAudioRecordBufSize in
new AudioRecord(MediaRecorder.AudioSource.MIC,
44100,AudioFormat.CHANNEL_IN_MONO,
I got a report from a customer of my audio analysis app saying that the
frequency spectrum graph we show has a mirror image of peaks about 4000 Hz
(the Nyquist frequency for 8000 samples per second). Our app requests
22050 samples per second, and is getting 22050 samples per second. But
This is a new problem with Lollipop only. My app writes to external memory
by building a file path name from:
Environment.getExternalStorageDirectory().getAbsolutePath()
But when I plug the USB into a desktop computer, the new file does not show
up in Explorer. If I reboot the Lollipop
Google is still promoting runOnUiThread in their sample Bluetooth Low
Energy device scan callback code:
private BluetoothAdapter.LeScanCallback mLeScanCallback =
new BluetoothAdapter.LeScanCallback() {
@Override
public void onLeScan(final BluetoothDevice device, int rssi,
I tried using a clearly incorrect icon size for a launcher icon (386 x
386), and the icon was automatically down-sized on my Galaxy Tab 4 to look
the same as all the other app icons. So I wonder why we need to provide 5
different launch icon sizes? Is this resizing behavior one that I can
The simplest way to do that is to use a USB-to-serial converter and program
your Android app to talk to the converter module using the USB SPP
protocol. Then your micro controller program is simply talking over its
UART. If you want to stay with USB all the way, then you will have to use
a
I have implemented Bluetooth in several of my projects where the Android
device is the user interface to a custom device with a Bluetooth module
using the SPP profile (serial port replacement). But I want to clean up my
code and make it more robust. Since I expect to be doing more of these
After I posted this question I found a reference to using Messenger that
seemed to indicate it was about as lightweight as Binder, being just a
wrapper for it. And I have a nice example of using Messenger for 2-way
communication here on Stack Overflow
(SOLVED!) Here's what I found out. My construction of the AudioRecord
object was like this:
new AudioRecord(MediaRecorder.AudioSource.MIC,
22050,AudioFormat.CHANNEL_IN_MONO,
AudioFormat.ENCODING_PCM_16BIT, myBufSize);
where myBufSize was set to a very large 16384. And
In my musical instrument tuner app I stream audio data to my analysis code
with an AudioRecord.read() method which runs in a separate thread to
decouple it from the UI. The AudioRecord was set up with a sample rate of
22050 and a 16384 samples. I read the data in chunks of 1024 samples at a
New information: I just realized that I am unable to demonstrate this
behavior on anything other than the Eclipse simulator. That's because I
don't have any real Android devices that are both Android 3.0 or above and
have a separate hardware menu button. The more modern ways of getting at
I have several ActionBar items that each display a popup menu. When these
items are visible in the ActionBar there is no problem. The user taps on
the item in the ActionBar and immediately the appropriate popup menu
appears. But sometimes, on some devices, one or more of my ActionBar items
I am migrating from an old-style Menu button menu to the ActionBar in an
app that targets Android 3.0 and above. My ActionBar buttons are working
fine. But on devices that still have a hardware Menu button, the Menu
button causes the whole screen to be overlaid with a semi-transparent dark
By different vertical positions I mean that the two buttons are side by
side, but one is positioned slightly higher on the screen, as shown in the
attached two-buttons.png.
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On Thursday, June 26, 2014 9:08:45 AM UTC-6, TreKing wrote:
I see. Try changing the button heights to match parent and the containing
layout to whatever height you want it.
No, that didn't help either. The attached two-buttons.png is what happens
with this XML:
LinearLayout
On Thursday, June 26, 2014 9:08:45 AM UTC-6, TreKing wrote:
I see. Try changing the button heights to match parent and the containing
layout to whatever height you want it.
That fixed it! Although I don't know why it didn't work before. Thanks.
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You received this message because you
Two buttons are to be placed side by side in a horizonally-oriented
LinearLayout whose width is match_parent. To make the buttons share the
width equally I have assigned each Button the layout_weight of 0.5.
Everything looks good if both buttons have a single line of text, or if
both buttons
dp instead of sp made no difference. The two buttons still appear at
different vertical positions when only one of them has text that takes up
two lines.
On Wednesday, June 25, 2014 9:54:03 AM UTC-6, Tushar Lal wrote:
Instead of sp try dp...
On Jun 25, 2014 7:06 PM, 'RLScott' via Android
I need to implement a File Explorer as an activity within my app. One of
the functions of such an activity is the ability to recursively navigate up
and down the directory tree. I was planning on doing that by having the
current instance of the File Explorer start another instance of the File
I should have mentioned that the file structure in question Dropbox, and
the access methods are the Dropbox Sync API, but I think your suggestion is
a good one, once I figure out the Dropbox equivalents for the native
Android file access methods. I will do that instead of spawn new instances
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