Android: Is there a way to simulating D-Pad Events (API 10)?

谁说胖子不能爱 提交于 2019-12-14 00:23:41

问题


The problem is very simple. I have to simulate the dpad events (UP,DOWN,RIGHT,LEFT,CENTER) for navigate in my GUI that consists of a lot of buttons and other elements. With the simulator D-Pad I can without a line code navigate throw this GUI. But how can I do this programmatically?

I have tried a lot with no success:

  • KeyEvent event = new KeyEvent(KeyEvent.ACTION_DOWN,KeyEvent.KEYCODE_DPAD_LEFT); View.dispatchKeyEvent(event); Nothing happens (the focus should move one element to right)

  • I have also read a lot about windowManager.injectKeyEvent but found nothing that works.

  • And also Instrumentation can help for simulating keyevents but more for testing, not for use in the application itself.

I think there is a solution, because talkback can simulate the physical D-Pad (http://code.google.com/p/eyes-free/source/browse/trunk/ime/latinime/src/com/googlecode/eyesfree/inputmethod/latin/LatinIME.java)


回答1:


You have two way to achieve your goal:

First,

Instrumentation inst=new Instrumentation();
inst.sendKeyDownUpSync(int  keycode);

Prerequisites:In the same process.

Second,for examble,wo want to simulate KeyEvent.KEYCODE_DPAD_UP

getCurrentInputConnection().sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN,KeyEvent.KEYCODE_DPAD_UP));

Prerequisites:Must bind inputmethd




回答2:


I found the smart solution (e.g for go down):

bic=new BaseInputConnection(this.getWindow().getDecorView(),false);
KeyEvent event2 = new KeyEvent(0, 0, KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_DOWN,0, KeyEvent.META_SYM_ON, 0, 0, KeyEvent.FLAG_VIRTUAL_HARD_KEY); 

bic.sendKeyEvent(event2);

That's all, an internal algorithm to find the next element in your selected direction




回答3:


Try using KeyEvent.ACTION_UP instead of ACTION_DOWN. Solved similar issue for me.




回答4:


Given

InputConnection ic = getCurrentInputConnection();

You can move the cursor in an EditText by simulating DPAD down/up events. The up event would probably be enough, but I am simulating the full event to be safe.

Left

ic.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_LEFT));
ic.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_LEFT));

Right

ic.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_RIGHT));
ic.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_RIGHT));

Up

ic.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_UP));
ic.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_UP));

Down

ic.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_DOWN));
ic.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_DOWN));


来源:https://stackoverflow.com/questions/8568343/android-is-there-a-way-to-simulating-d-pad-events-api-10

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