Android input event injection

In Android, input commands can be used for event injection, such as input tap 100 200

The input code is in

frameworks/base/cmds/input/src/com/android/commands/input/Input.java

 

Calling is

    private void injectMotionEvent(int inputSource, int action, long when, float x, float y, float pressure) {
        final float DEFAULT_SIZE = 1.0f;
        final int DEFAULT_META_STATE = 0;
        final float DEFAULT_PRECISION_X = 1.0f;
        final float DEFAULT_PRECISION_Y = 1.0f;
        final int DEFAULT_EDGE_FLAGS = 0;
        MotionEvent event = MotionEvent.obtain(when, when, action, x, y, pressure, DEFAULT_SIZE,
                DEFAULT_META_STATE, DEFAULT_PRECISION_X, DEFAULT_PRECISION_Y,
                getInputDeviceId(inputSource), DEFAULT_EDGE_FLAGS);
        event.setSource(inputSource);
        Log.i(TAG, "injectMotionEvent: " + event);
        InputManager.getInstance().injectInputEvent(event,
                InputManager.INJECT_INPUT_EVENT_MODE_WAIT_FOR_FINISH);
    }

InputManager . GetInstance (). InjectInputEvent  call to InputDispatcher of

 injectInputEvent method

The click and other operations in the monkey test are these methods called,

 

However, calling this method directly has problems in complex scenarios. When there is already a touch on the screen, sending another such inject event will cause the original touch to be cancelled. In the tap method of input, turn down Add a sleep to the up event, and you will find that the original touch point is cancelled after the up event is injected.

One question.

And using sendevent can avoid such problems, but the data format of sendevent is a bit complicated, this is a solution.

A master wrote to record screen processing through getevent, sendevent similar methods

https://github.com/TUSSON/android-event-recorder