new Settings API : read write settings

[john-peterson]

replacement for settings app

adb only required once

p="pm grant com.termux.api android.permission"
$p.WRITE_SECURE_SETTINGS

then you can finally apply the settings you need with out adb and wifi

notice about regular settings

you may already know this

this permission is set from settings app GUI and can't be set from command

$p.WRITE_SETTINGS

it returned some kind of cryptic error that I googled and learned it was in the GUI

example usage

first create this function in shell

s(){ test -n "$4" && val="--estermux-api Settings -a $1 --es type $2 --es setting $3 --es value $4; }

string appears to work for int also

s get int development_settings_enabled
1
s get string development_settings_enabled
1

but not the other way around

s get int airplane_mode_radios
android.provider.Settings$SettingNotFoundException: airplane_mode_radios

s get string airplane_mode_radios
cell,bluetooth,uwb,wifi,wimax

this illustrate a deleted or null value with JSON output . an empty array

s get string hdmi_cec_set_menu_language_denylist
[]

and the new single line non JSON plain text output .that I changed to but can be easily changed back . except the extra messages may look weird in JSON

s get string hdmi_cec_set_menu_language_denylist
null

set empty string same as delete

if you want to restore default there is no delete

settings delete global battery_saver_constants 

in the API only blank string but the effect is the same

the return value is null from empty string

but I haven't verified this in adb because I could only use it for a minute to set permission for termux user

s set string battery_saver_constants ""
s get string battery_saver_constants  
null

service settings are impossible from API

GUI settings like dark mode and navigation is not controlled by a setting but a service

I constantly need to change this from GUI when I put my phone in travel pouch

cmd overlay enable com.android.internal.systemui.navbar.threebutton
Can't find service: overlay

and take it out again

cmd overlay disable com.android.internal.systemui.navbar.threebuttonadb shell cmd overlay enable com.android.internal.systemui.navbar.gestural

and it would be faster from command but it's impossible outside adb

this service is visible but the setting seems to be restricted to system apps

cmd uimode night no
java.lang.SecurityException: getNightModeCustomType requires MODIFY_DAY_NIGHT_MODE permission

and the equivalent API

int mode = UiModeManager.MODE_NIGHT_NO;
mUiModeManager.setNightMode(mode);

I haven't tried this because I never have wifi to test anything in adb

p="pm grant com.termux.api android.permission"
$p.MODIFY_DAY_NIGHT_MODE

it may be restricted to system apps if I try to set it from adb

more about battery saver especially day night mode

now I can finally change battery saver settings . especially the disaster

s set string battery_saver_constants enable_night_mode=false

and it's constantly deleted on my unisoc phones both of them that otherwise works nearly perfectly

they are called Hisense in south Africa and umidigi in Canada but they are essentially the same phone usually the top seller on Amazon . at least it was in Canada i was lucky to get it again for only 150 Canadian . and in stores in south Africa at least where I bought it first for around two hundred Canadian or 150 euros

searching this problem others have also complained that this setting is reverted constantly and you have to set it every time you need it

I had only one phone on a six months food and tent expedition in Australia and the sun panel broke and caused a disaster . I had to complete this app when I returned to a bike food tent expedition Canada and had a connection and battery again

and also my alarm timeout patch for termux to make sure it's not left running in the back ground

check battery policy before and after setting

on my unisoc phones battery saver constants is null by default

save four different files with battery saver on and off and night mode true or false

do this four times for four different files

dumpsys power | grep -A 128 "Battery saver policy" > bat

to verify and compare before and after with diff to make sure you didn't change anything else in the policy except the night mode

the other battery saver setting

here is another battery setting I have never used or heard of

s get string battery_saver_device_specific_constants
null

maybe this one is not reset all the time except at reboot

s set string battery_saver_device_specific_constants enable_night_mode=false

I haven't had time to try it until writing this

keep battery saver on while charging

some one claimed this would be permanent even after I unplug charging

settings put global low_power 1

or in this case

s set int low_power 1

setting this manually somehow magically keep it on while plugged in

this makes absolutely no sense and I haven't tried it but I am looking for a way to always save battery since I always lack it

I have no idea why that should be the case and don't believe it

I will try to set it and check if battery saver policy is still enable

but some one should explain how could it have any idea what enabled it . or how it was enabled by the system or GUI or API

what I would expect is that the system always set it to 0 when battery is connected to charging

to restore the automatic battery saver off when charging I'm supposed to do

dumpsys battery reset
settings put global low_power 0

this is only available adb . this error is outside adb

dumpsys battery -h
Can't find service: battery

but I'm not worried about losing it completely or always have it on while plugged in even but I doubt it's possible

they are not listening really to the right people or minorities or important minorities

just because I have a power source doesn't mean I'm home I could still be on expedition

after testing this stupid idea I find that

settings app is completely blocking battery saver when. plugged in everything is greyed out

when I plug in i get this message as I suspected this idea makes no sense whatsoever

logcat -d|ack -i low_pow
05-12 01:58:42.938   910   910 D PowerHAL: PowerSessionManager::updateHintMode: mode: LOW_POWER, enabled: 0
05-12 01:58:42.938   910   910 D PowerHAL: switch mode: 0x00000002 -> 0x7fff0000

if I run this

s set int low_power 1
setting low_power  to "1"
boolean result: true

s get int low_power 1
1

while plugged in nothing happens in log from power manager that should report on

05-12 01:57:36.670   910   910 D PowerHAL: PowerSessionManager::updateHintMode: mode: LOW_POWER, enabled: 1

unlike wifi the setting is not immediately restored to 0 but it's ignored by power manager as I suspected . another fail for Google AI

I see nothing in policy that would indicate this is possible

dumpsys power | grep -A 128 "Battery saver policy"|ack -i low
  mIsBatteryLevelLow=false

it only says battery is not low probably because I'm charging

I don't even know what that value means

confused with sticky battery saver restored when unplugged

I think they are talking about or have confused it with sticky mode that I already have

dumpsys power | grep -A 128 "Battery saver policy"|ack sticky -i
  mSettingBatterySaverEnabledSticky=true

it only means battery saver comes back after unplugged

if you keep it plugged in all night battery will drain like crazy because battery saver is disabled

PATCH local adb with out wifi please merge this team mankind

I have prepared these rough outlines for a patch for local ADB access on all phones

john-peterson/platform_packages_apps_settings@adb
john-peterson/platform_frameworks_base@adb

I don't know if user/project@branch is resolved so here are the whole links for the GUI . cli still has no links only a static page

https://github.com/john-peterson/platform_packages_apps_settings/commits/adb
https://github.com/john-peterson/platform_frameworks_base/commits/adb

I'm struggling against this response

¿ ? ¿ don'T yOu guYs havE wIFi ¿ ? ¿

these sayings come to mind . different worlds . different strokes . a world apart . Romeo and Juliet

they struggle to understand some people don't have wifi and almost never any connection at all

I have written a long letter on Gerrit and hopefully this patch will land some day for all phones

I looked for these wifi hooks and tried to remove the call back that disable adb demon when wifi state change to disconnect

android.net.conn.CONNECTIVITY_CHANGE
android.net.wifi.STATE_CHANGE

adb sources that I forked

aosp-mirror/platform_packages_apps_settings:src/com/android/settings/development

aosp-mirror/platform_frameworks_base:services/core/java/com/android/server/adb

and ADB native source that doesn't seem to need any patch

https://android.googlesource.com/platform/packages/modules/adb

it's impossible to even connect again with no wifi

even if you are paired it's impossible to connect again all these fail with out wifi

development_settings_enabled
adb_wifi_enabled
adb_allowed_connection_time

if it's off I'm pretty sure this is not allowed but I haven't tried it

s set string development_settings_enabled 1

they plugged all the holes . there is no way to get ADB back with out wifi

notice it return true despite the error or rather info message in the log

s get int  adb_wifi_enabled 
0
s set int  adb_wifi_enabled 1
setting adb_wifi_enabled  to "1"
result true
s get int  adb_wifi_enabled
0

logcat -d|ack adb
05-11 18:34:54.752  1317  1338 I AdbDebuggingManager: Not connected to any wireless network. Not enabling adbwifi.

even if you got this far if you check the source only the port is written in log not the pairing code

logcat -d|ack adb -i
logcat -d|ack WirelessDebuggingFrag
Got pairing code port=12345

I don't know any other way to get the adb port all network status access is blocked

netstat -plnv |grep adb
netstat: no support for `AF INET (tcp)' on this system.
dumpsys net*|grep adb