Fire a pinch in/out command to Android phone using adb
So far I'm able to tap, swipe, unlock, install/uninstall and launch app using adb commands but not able to find how to perform zoom in/out using adb command.
I have got coordinates of pinch in/out but not understanding how to fire them using adb command from terminal.
For example , we have command --> adb shell input tap x y So in this we can replace x and y with values/coordinates similarly I want to know the way to simulate pinch in/out.
Coordinates that I get for pinch-in are below.
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Solution 1:
You can do it using adb getevent and sendevent.
Connect you device using adb. Follow the steps below.
-
Identify your Input device:
Open any image on your device. To list input devices, run$ adb shell getevent add device 1: /dev/input/event7 name: "msm8226-tapan9302-snd-card Headset Jack" add device 2: /dev/input/event6 name: "msm8226-tapan9302-snd-card Button Jack" add device 3: /dev/input/event2 name: "synaptics_dsx_i2c" add device 4: /dev/input/event4 name: "qpnp_pon"Pinch in/out on the image, you should see some continuous logs like
/dev/input/event2: 0003 0030 00000005 /dev/input/event2: 0000 0000 00000000 /dev/input/event2: 0003 002f 00000000 /dev/input/event2: 0003 0036 00000144 /dev/input/event2: 0003 003a 00000079 /dev/input/event2: 0000 0000 00000000 /dev/input/event2: 0003 0036 00000142Confirms
/dev/input/event2is the input device name for my target device. -
Get exact
geteventand convertgeteventtosendevent:Make sure your screen switched on and is open with some image,
Run the below command on the prompt.$ adb shell getevent | grep dev/input/event2 > getevent_input.txtWhile the above is running, Pinch in/out on the image on your phone.
Once completed, Kill the above command Ctrl + C
Open filegetevent_input.txtand delete first line"add device X: /dev/input/eventX"from it.Since
geteventreturns values in decimal, andsendeventtakes value in hexadecimal.
We have to do the above conversion.
This scripthex_to_dec.pyhere does the Job. Thanks to this guy!$./hex_to_dec.py getevent_input.txtGenerates a file
getevent_input.scr, Now rename this file to.sh$ mv getevent_input.scr sendevent_input.shOpen file
sendevent_input.shand delete second line"echoing – drawing function"and save it. -
Run on device.
Transfersendevent_input.shto device.$ adb push sendevent_input.sh /sdcard/ 1615 KB/s (64379 bytes in 0.038s)Make sure you device has an image open, and screen is not off.
$ adb shell sh /sdcard/sendevent_input.sh
Worked perfectly fine for me, If this what you looking for.
For visible results, enable Show touches in Developer Options.
Environment: Motorola Moto G (Android 4.4.4) with ADB (v 1.0.31) on Ubuntu 12.04.
Solution 2:
A (kind of hacky) solution with adb shell input looks like
adb shell input tap 200 200 & PIDTAP=$!
sleep 0.1
adb shell input swipe 200 200 200 100 1000 & PIDSWIPE=$!
wait $PIDTAP
wait $PIDSWIPE
The idea is that we launch TAP command, then short sleep and then perform SWIPE. Such commands sequence is interpreted as tap + swipe hence zoom is performed. The example above would be a zoom out on a map.