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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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Murtaza Khursheed Hussain
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nikhil84
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  • This looks like an `Instrumentation`. Why not using something like an `ActivityInstrumentationTestCase2`, then send `MotionEvent` to your `Activity` using `Instrumentation` API ? – Antoine Marques Aug 18 '14 at 13:13
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    What is the purpose of this? Just testing? If so, you can use Robotium and here is an example [link](https://groups.google.com/d/msg/robotium-developers/CmjQKrPL6uE/PEnvr7bPWGgJ). You can also use batching. take a look [link](http://stackoverflow.com/a/25045657/896038) – Saeid Farivar Aug 18 '14 at 13:16
  • I want to be able to fire adb command from terminal itself. Instrumentation and testcase2 relates to scripting if me not wrong, so don't want to go into that. Still if @AntoineMarques if u have example of it pls provide me link. – nikhil84 Aug 19 '14 at 04:07
  • See here the part about `Instrumentation` (http://developer.android.com/training/activity-testing/activity-basic-testing.html). The method i refer to is http://developer.android.com/reference/android/app/Instrumentation.html#sendPointerSync(android.view.MotionEvent). Then, this guide might help you if haven't already made an instrumentation : http://developer.android.com/tools/testing/activity_test.html – Antoine Marques Aug 19 '14 at 07:27
  • @AntoineMarques for these i need script to run but what i'm looking is way to fire pinch in/out with coordinates like input tap x y. Still appreciated for your ans. – nikhil84 Aug 19 '14 at 08:18
  • I don't think there is a way to do multitouch actions using ADB. You might be able to acheive what you want using uiautomator, there is support for multitouch since api level 18. http://developer.android.com/tools/testing/testing_ui.html http://developer.android.com/tools/help/uiautomator/UiObject.html#performMultiPointerGesture(android.view.MotionEvent.PointerCoords[]...) – Raanan Sep 01 '14 at 17:04
  • @Raanan I have looked around and came across multitouch/touchscreen in ADB ,and also sendevent command is there which have a pattern of multitouch. At end not getting exact way of implementation. – nikhil84 Sep 02 '14 at 04:24
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    I stand corrected, I found an interesting link here: http://ktnr74.blogspot.de/2013/06/emulating-touchscreen-interaction-with.html – Raanan Sep 02 '14 at 12:04
  • For simple touch down and swipe adb have commands provided so need to go for such box and coding. For touch adb shell input tap x y and adb shell input swipe x1 y1 x2 y2. – nikhil84 Sep 02 '14 at 13:10
  • Any one who vote down question please do provide reason for same. – nikhil84 Sep 04 '14 at 09:54

2 Answers2

27

You can do it using adb getevent and sendevent.
Connect you device using adb. Follow the steps below.

  1. 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 00000142

    Confirms /dev/input/event2 is the input device name for my target device.

  2. Get exact getevent and convert getevent to sendevent:

    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.txt

    While the above is running, Pinch in/out on the image on your phone.

    Once completed, Kill the above command Ctrl + C
    Open file getevent_input.txt and delete first line "add device X: /dev/input/eventX" from it.

    Since getevent returns values in decimal, and sendevent takes value in hexadecimal.
    We have to do the above conversion.
    This script hex_to_dec.py here does the Job. Thanks to this guy!

    $./hex_to_dec.py  getevent_input.txt

    Generates a file getevent_input.scr, Now rename this file to .sh 

    $ mv getevent_input.scr  sendevent_input.sh

    Open file sendevent_input.sh and delete second line "echoing – drawing function" and save it.

  3. Run on device.
    Transfer sendevent_input.sh to 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.

Saurabh Meshram
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  • Your answer is outstanding, however on some devices sendevent is really slow and it doesn't work. – Smeterlink Dec 24 '17 at 16:58
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    @Saurabh Meshram, I followed your answer step by step but can't seem to avoid getting sendevent: /dev/input/event2: Permission denied when executing. Does this require root access? – S. Van den Wyngaert Sep 20 '20 at 12:25
  • In current Android versions access is blocked for adb shell by SELinux policy, even though /dev/input/eventn devices seem to be writable. Therefore sendevent will not work (can't write the device). So yes, you probably need root for that. – Zoltan Peller Jan 03 '23 at 00:57
3

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.

yunik
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Anton Rutkevich
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