如何在 Android 模拟器上捏缩放？

Question

I have an application in which I need to implement image editing, which also includes pinch zooming. I am done with pinch zooming but I can test this only on device, not on emulator.

Is there any way for testing pinch zooming in android emulator, any shortcut key or any other way?

Answer 1

With a mouse:

Press and hold Ctrl and press and hold left mouse and while doing that move your mouse.

With a trackpad:

Press and hold Ctrl and press and hold your trackpad and move with a finger to the LEFT and RIGHT (not up and down).

Answer 2

Since ADT 17, it is possible to use a physical Android 4.0 device to send multitouch gestures to the emulator. See Android's instructions here .

Multi-Touch

The emulator supports multi-touch input, as an experimental feature in r17, using a tethered Android device running the SdkControllerMultitouch application. The application contains an activity that monitors touch inputs and sends them to the emulator. This requires an Android 4.0 or later system image. The activity displays the content of the emulator screens to help with interactivity. It is recommended to enable "show touches" in the Developer section of the Settings on the emulator to see exactly where the touches are sent.

The SdkControllerSensor application source code is located in

$SDK/tools/apps/SdkControllerMultitouch/

But this is still a workaround since we need a real device. My advice would be to test your app directly on a real device as it's more robust, and even more performant.

Answer 3

I know it's late reply but this might save someones time.

Double-click and then hold down the second click and move the mouse up to zoom out or down to zoom in .

Hope this works!

Answer 4

On a Mac running the latest version of AndroidStudio and a vanilla Nexus 5 API 24 emulator all you have to do is keep cmd ( ⌘ ) pressed.

The drag points will appear. After that just left click and drag anywhere on the screen!

Answer 5

OK, I was experimenting a bit, and on the bluestacks android emulator, I've figured it out.

It is Ctrl+Mouse wheel . Works for me, hope it helps you too.

Answer 6

I know this is old but this might still help someone.

On mac:

To zoom in use double click (on track pad)

To zoom out use Command + Shift + click (on track pad)

Answer 7

There has been some progress in this field with android tools release 17: you can use a device to control the emulator: http://developer.android.com/sdk/tools-notes.html .

Otherwise, it looks like testing on real device is just better for this case (and in general its also much faster).

Answer 8

For mac: Use the ⌥ Option key and then use your mouse or trackpad to pinch/zoom. This is working on the android studio emulator.

You can find all the shortcuts in the extended controls menu, by pressing the three dots on the menu and then navigating to "help".

Answer 9

1. Click 3 points (like preferences on emulator)
2. Settings
3. set param "Send keyboard shortcuts to" from "Virtual device" to "Emulator controls" now gestures work perfect!

Answer 10

An Android Emulator doesn't support multi-touch you can't test it on emulators. Please use real-device for multitouch testing.

For recent developments in this regard read this - http://tools.android.com/tips/hardware-emulation

Answer 11

PinchZoom works on Multi-Touch.

If the device is supporting multi-touch then only your code will work else it wont work.

As the Android Emulators doesn't support multi-touch you can't test it on emulators.

Still new ADT has feature But I never tried this

Answer 12

1. CTRL + a click on left side of the view screen will zoom out.

2. Double click on a location will zoom in.

3. North and South -> Scroll wheel - up and down

4. West-> CTRL+Scroll up at left side of the screen

5. East-> CTRL+Scroll up at right side of the screen

Answer 13

On macbook with Android studio Bumblebee, I have to hold control first which lets the drag pointer to appear on the screen. Then all I need to do is double tap, hold the second tap, and drag to zoom-in/out.

Answer 14

As of March 1, 2016 for the Android Studio's emulator on Windows. The pinch key on the emulator is the Alt key. Hold down Alt and click and drag your mouse button.

The CTRL key might still work for you, but it doesn't work for me.

Answer 15

You can not able to test pinch zoom in Emulator. Please use Real device to test pinch zoom effect.

I have not try with youwave. May be you can able to test pinch in that environment. Not sur but just try with it.

Enjoy Coding....