Android Talkback accessibility events - android

Is there a way to programatically set to read all views on talkback when certain action is fired (ex. button click) like it is when you tap with 3 fingers at once?
Thanks in advance.

Option 1 - if you just want to read some text: Use speech to text
please refer this answer
Text to speech is built into Android 1.6+. Here is a simple example of how to do it.
TextToSpeech tts = new TextToSpeech(this, this);
tts.setLanguage(Locale.US);
tts.speak("Text to say aloud", TextToSpeech.QUEUE_ADD, null);
More info: http://android-developers.blogspot.com/2009/09/introduction-to-text-to-speech-in.html
Option 2 - If you are particulate about using talkback
refer to this answer
Settings.Secure.putString(getContentResolver(),
Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES, "pkgname/classname");
Settings.Secure.putString(getContentResolver(),
Settings.Secure.ACCESSIBILITY_ENABLED, "1");
Where the pkgname is your package name and the classname is the class name of your accessibility service.
If you need to enable several services or you don't want to destory the previous settings you might want to use : to seperate other services.
Also you might need to run as a system application and you might need the following permissions
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
<uses-permission android:name="android.permission.WRITE_SECURE_SETTINGS" />
this might not work on some versions of Android.
Also refer other answers to this question
PS. If it doesn't work, maybe you could find some luck in /data/data/com.android.providers.settings/databases/settings.db/secure, that's where Android stores secure settings.

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How to take off a PX4 autopilot using mavlink message?

I follow the following link's sample code
http://android.dronekit.io/first_app.html
and when I set API VehicleApi.getApi(this.drone).arm(true);
vehicleState.isFlying() automatically becomes true.
Can anybody tell me what this problem is?
What I need is:
1. take off, land
I read from some website that the dronekit-android does not support the mode changing. If so, how should I send the mavlink message to take off and land?
So far, I can sucessfully send the mavlink message to the PX4 board.
Thanks for replying.
Thank you for replying.
BR
SeanH
If you trace though some of the code in dronekit-android, you can see that isFlying is set here with the code below.
boolean isFlying = systemStatus == MAV_STATE.MAV_STATE_ACTIVE || ...;
MAV_STATE_ACTIVE, defined here states
System is active and might be already airborne. Motors are engaged.
So isFlying doesn't mean it's airborne but just that the motors are turned on. That occurs when you call VehicleApi.getApi(this.drone).arm(true); because you are literally arming the vehicle at that point.
For takeoff, you want to use the ControlApi. ControlApi.getApi(drone).takeOff(desired_altitude, listener) and for land you need to use VehicleApi.getApi(drone).setVehicleMode(VehicleMode.COPTER_LAND, listener)
The sample code you're looking at is very old. I suggest you follow the sample app from github.
I have not tried android-dronekit before and I noticed that the src folder have not been updated for more than two years on github.
I advice you to use python-dronekit because there is a powerful library called pymavlink in python and used in python-dronekit. You can build hyper application if you want but first try to takeoff and land in python.

Unable to set target temperature to Nest Thermostat from Android SDK

I am writing an Android application to control a Nest thermostat. I was able to connect to it just fine and I can read the correct target temperature (turning the nob on the thermostat updates my TextView).
However, when I try to write the target temperature like this, nothing happens:
String thermostatID = mThermostat.getDeviceId();
mNest.thermostats.setTargetTemperatureF(thermostatID, 70);
I tried setting the HVAC mode first, in case I needed that, but this didn't work either:
String thermostatID = mThermostat.getDeviceId();
mNest.thermostats.setHVACMode(thermostatID, "cool");
mNest.thermostats.setTargetTemperatureF(thermostatID, 70);
The Textview flashes 70 for a brief second, but then shoots back up to 77 which is the target temperature that was set by the actual thermostat. Is this an issue with the SDK code for setTargetTemperatureF, or am I missing something simple here?
The permissions for the Nest thermostat are set on the Nest website. Visit https://developer.nest.com/products and sign in. You will be given a list of your products, all you need to do is select one and scroll down to permissions.
Note that after you change permissions, your mobile (or various platform) application will need to rerun authentication for this change to take place.
Try to modify your code as following, then you can set the target temperature.
mNest.setTargetTemperatureF(thermostatID, 70L, null);

How to add an item to Quick Settings in Android

I was thinking if there is a way to add an item in Quick Settings Panel in android ?
I have an app called Mirror by Koushik Dutta that does the same. It adds an item in Quick Settings panel. I decompiled the app and saw that he's moving the apk to /system/priv-app .
That's it. Nothing's related to adding an item in Quick Settings Toggle.
I know it'll require root access (just a college project). Please if anyone has any idea how it can be done, it would be really helpful.
Use the Android N tile API
Custom quick settings can be created in Android N using the tile API. Just make a class that inherits from TileService and add it to the manifest.
Here's the example given in the TileService documentation:
<service
android:name=".MyQSTileService"
android:label="#string/my_default_tile_label"
android:icon="#drawable/my_default_icon_label"
android:permission="android.permission.BIND_QUICK_SETTINGS_TILE">
<intent-filter>
<action android:name="android.service.quicksettings.action.QS_TILE" />
</intent-filter>
</service>
Recent versions of CyanogenMod 12.1 support this through the CyanogenMod Platform SDK:
public void publishTile() {
if (supportsCustomTiles()) {
Intent receiver = new Intent(context, TileClickedReceiver.class);
PendingIntent clickIntent = PendingIntent.getBroadcast(
context,
0,
receiver,
PendingIntent.FLAG_CANCEL_CURRENT
);
CustomTile tile = new CustomTile.Builder(context)
.setIcon(R.drawable.tile_icon)
.setLabel("Test Tile")
.setOnClickIntent(clickIntent)
.build();
CMStatusBarManager
.getInstance(context)
.publishTile(1234, tile);
}
}
private boolean supportsCustomTiles() {
try {
Class.forName("cyanogenmod.app.CustomTile");
return true;
} catch (ClassNotFoundException e) {
return false;
}
}
The quick settings tiles in Android 4.4 are all hardcoded.
Here's a link to the source.
Even with root, the only way to change this would be patching system jars/apks.
The support for Mirror might be added by Cyanogenmod, have you tried if it works on any other ROM?
Edit: Here's a feature request for a quick settings api: https://code.google.com/p/android/issues/detail?id=42616
Koushik Dutta didn't add a new quick settings tile. The "Cast Screen"-Tile is implemented by the android system and appears sometimes. It's a shortcut to the "cast screen"-menu in system settings. Koush added new options for this menu (i don't know if there's an open api or if he needs the root permission for that) and now, the tile is always displayed because there's always content.
To answer your question: No, without system modifications with root, you can't add tiles to the android quick settings. (Edit: I haven't read that you'd also use root. So, you can't add tiles easily and the mirror application by Koushik Dutta doesn't do that, too.)
PS: It isn't because of CyanogenMod, because I use stock android and the app works, too.
Update 2019-08-08: With Android N, there's an official API to add custom quick setting tiles (see Sam's answer).

How to open device dock settings programmatically?

I have to open device dock setting through code. I searched but not got proper solution. In samsung galaxy s-3 it goes through settings->Accessory. I tried following code but didn't work
startActivityForResult(new Intent(Settings.System.getString(getContentResolver(), DOCK_SETTING)), 0);
Correct me if I'm wrong, but I believe the reason this doesn't work, (and why you weren't able to find the appropriate Activity Action in the Android Settings), is because Accessory appears to be provided by Samsung for its Galaxy devices. Therefore, you won't be able to find it in the standard Android SDK (yet?).
I'm currently trying to figure out a workaround, so I'll edit this post if I find a solution.
EDIT: Looks like JoxTraex found a way for you to edit the settings via:
Settings.System.putInt(getContentResolver(), "dock_sounds_enabled", 1);
In addition, if you need to modify these settings when the user has docked their device, you should create a BroadcastReceiver to listen for the ACTION_DOCK_EVENT broadcast.
I was able to achieve this through looking at the settings and configuring the setting programatically:
android.provider.Settings.System.putInt(getContentResolver(), "dock_sounds_enabled", 1);
You need the permission:
<uses-permission android:name="android.permission.WRITE_SETTINGS"/>
The code above will write to the settings that enables the dock sound settings on the samsung s3. However; instead of just writing it you should tell the user that the setting is disabled and you need it enabled and allow the user to confirm they want to enable it via a dialog.
On another note, I don't think its possible to go directly to the settings->accessory screen because its was a custom settings added by Samsung. This action is not provided in the Android SDK, so it would take a while to derive what is the actual action or even if it exists.
And if you want to confirm it just query it:
String where = "name = 'dock_sounds_enabled'";
Cursor c = getContentResolver().query(android.provider.Settings.System.CONTENT_URI, null, where, null, null);
Update
Steps for how to handle the dialog's response for configuring the dock setting:
Grab the setting.. if it's 0, bring up the dialog to enable it, otherwise continue with your processing
Once the dialog is up and the user confirms they want to enable it:
Confirm: Put a 1 into the dock sounds then close the dialog
Deny: Don't set the dock setting then close dialog

android.permission.ACCESS_LOCATION_EXTRA_COMMANDS [duplicate]

Android contains a permission called 'ACCESS_LOCATION_EXTRA_COMMANDS'. Normal location commands would involve accessing coarse/fine location. Does anyone know what kind of extra commands this permission allows the app to access ?
Thanks.
I only know of 1 command which can be uses when you have a slow GPS fix:
((LocationManager)YourActivity.this.getSystemService("location")).sendExtraCommand("gps", "delete_aiding_data", null);
and in the Manifest:
<uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
According to a rough search in Android source code, it indicate that LocationManager.sendExtraCommand() need this permission exactly.
Documentation: sendExtraCommand(java.lang.String, java.lang.String, android.os.Bundle)
Go to https://cs.android.com/android/platform/superproject/+/master:frameworks/base/services/core/java/com/android/server/location/provider/AbstractLocationProvider.java;drc=master;bpv=1;bpt=1;l=353, click on onExtraCommand if you don't see the "References" panel at the bottom, scroll down to "Overriden By", and click on each implementation to see what commands it supports.
Here's a list of commands supported by GnssLocationProvider (since all of the other implementations seem to do nothing or delegate to another one):
delete_aiding_data: calls deleteAidingData
force_time_injection: calls requestUtcTime
force_psds_injection: sends a DOWNLOAD_PSDS_DATA message if mSupportsPsds is true
request_power_stats: calls requestPowerStats

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