Why:
* During backup process Termux is being killed in most cases.
* Backup data is limited to 25 MB.
* Backup may not be performed/updated in certain cases.
The failsafe activity were infrequently used while confusing users.
Replace it with an app shortcut on Android 7.1+ and a separate app on
earlier versions.
Also enables session autoclosing so no more "annoying" messages
about "process completed - press enter". There autoclosing will be
performed on exit codes '0' and '130'.
On Android TV devices old behaviour will be used - auto close enabled for all
sessions when amount of running sessions >1.
Commit f0eeb47 introduced configurable extra keys and thus changed the
height of the viewpager to be multipled by the number of rows of extra
keys. However, the extra keys had two rows at the time, so the initial
height should have been changed to half of what it was now that it is
multiplied. This was not done, so the viewpager was twice the height it
should be after that change.
Icons used in notifications/status bar are monochrome and should use only white color and transparency. It is displayed fine on Android emulators but it's shown in black on Samsung Galaxy S7 running Android 7.0.
After the change, status bar icon is white and the small icon in notification still uses the black color set via setColor(). Termux doesn't support devices running Android older than 5.0 but using white color in vector drawables would be also necessary to generate proper (white) bitmap icons.
Split the app/ module into three modules
terminal/ - Terminal emulator library module.
view/ - Terminal view library module (depending on terminal/).
app/ - The main Termux app (depending on view/).
Also add the
float/ - The Termux:Float app (depending on view/).
As we have a document provider now we can remove ACTION_GET_CONTENT.
"The ACTION_OPEN_DOCUMENT intent is only available on devices running
Android 4.4 and higher. If you want your application to support
ACTION_GET_CONTENT to accommodate devices that are running Android 4.3
and lower, you should disable the ACTION_GET_CONTENT intent filter in
your manifest for devices running Android 4.4 or higher. A document
provider and ACTION_GET_CONTENT should be considered mutually exclusive.
If you support both of them simultaneously, your app will appear twice
in the system picker UI, offering two different ways of accessing your
stored data. This would be confusing for users."
- http://developer.android.com/guide/topics/providers/document-provider.html#43
The files are saved to $HOME/downloads/, after which the user
may choose to open the downloads/ folder or edit the file with
the $HOME/bin/termux-file-editor program.
It's also possible to receive URL:s, in which case the
$HOME/bin/termux-url-opener program will be called.
