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input tap x y 命令可以進行模擬點擊，但是只是一個點的事件，怎么進行多點模擬操作呢？

其實在MotionEvent里面把多點信息寫進去就可以了。

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我們可以參考scrcpy里面的寫法，

https://github.com/Genymobile/scrcpy

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??? private boolean injectTouch(int action, long pointerId, Position position, float pressure, int buttons) {

??????? long now = SystemClock.uptimeMillis();

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??????? Point point = device.getPhysicalPoint(position);

??????? if (point == null) {

??????????? // ignore event

??????????? return false;

??????? }

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??????? int pointerIndex = pointersState.getPointerIndex(pointerId);

??????? if (pointerIndex == -1) {

??????????? Ln.w("Too many pointers for touch event");

??????????? return false;

??????? }

// pointersState里對pointer進行添加等管理

??????? Pointer pointer = pointersState.get(pointerIndex);

??????? pointer.setPoint(point);

??????? pointer.setPressure(pressure);

??????? pointer.setUp(action == MotionEvent.ACTION_UP);

//這里設置pointerProperties, pointerCoords

??????? int pointerCount = pointersState.update(pointerProperties, pointerCoords);

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??????? if (pointerCount == 1) {

??????????? if (action == MotionEvent.ACTION_DOWN) {

??????????????? lastTouchDown = now;

??????????? }

??????? } else {

//設置多點事件的action，如105,105,205

??????????? // secondary pointers must use ACTION_POINTER_* ORed with the pointerIndex

??????????? if (action == MotionEvent.ACTION_UP) {

??????????????? action = MotionEvent.ACTION_POINTER_UP | (pointerIndex << MotionEvent.ACTION_POINTER_INDEX_SHIFT);

??????????? } else if (action == MotionEvent.ACTION_DOWN) {

??????????????? action = MotionEvent.ACTION_POINTER_DOWN | (pointerIndex << MotionEvent.ACTION_POINTER_INDEX_SHIFT);

??????????? }

??????? }

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??????? MotionEvent event = MotionEvent

??????????????? .obtain(lastTouchDown, now, action, pointerCount, pointerProperties, pointerCoords, 0, buttons, 1f, 1f, DEVICE_ID_VIRTUAL, 0,

??????????????????????? InputDevice.SOURCE_TOUCHSCREEN, 0);

??????? return device.injectEvent(event);

}

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調用injectInputEvent方法

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??? public boolean injectEvent(InputEvent event) {

??????? return injectEvent(event, InputManager.INJECT_INPUT_EVENT_MODE_ASYNC);

??? }

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??? public boolean injectEvent(InputEvent inputEvent, int mode) {

??????? if (!supportsInputEvents()) {

??????????? throw new AssertionError("Could not inject input event if !supportsInputEvents()");

??????? }

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??????? if (displayId != 0 && !InputManager.setDisplayId(inputEvent, displayId)) {

??????????? return false;

??????? }

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??????? return serviceManager.getInputManager().injectInputEvent(inputEvent, mode);

??? }

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設置好幾個點的軌跡，組裝好MotionEvent, 就可以使用injectInputEvent來注入多點觸控事件了。MotionEvent的getActionIndex方法可以獲取到當前的操作的事件是哪個點發起的。

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MotionEvent的log

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03-14 14:03:41.892 28564 28564 D test614 : MotionEvent { action=ACTION_MOVE, act

ionButton=0, id[0]=0, x[0]=357.66882, y[0]=888.5372, toolType[0]=TOOL_TYPE_FINGE

R, id[1]=1, x[1]=866.198, y[1]=1360.2915, toolType[1]=TOOL_TYPE_FINGER, buttonSt

ate=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=2, historySize=0, eve

ntTime=689571391, downTime=689567853, deviceId=8, source=0x1002 }

03-14 14:03:41.909 28564 28564 D test614 : MotionEvent { action=ACTION_MOVE, act

ionButton=0, id[0]=0, x[0]=348.67715, y[0]=894.53406, toolType[0]=TOOL_TYPE_FING

ER, id[1]=1, x[1]=866.198, y[1]=1361.7908, toolType[1]=TOOL_TYPE_FINGER, buttonS

tate=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=2, historySize=1, ev

entTime=689571407, downTime=689567853, deviceId=8, source=0x1002 }

03-14 14:03:41.944 28564 28564 D test614 : MotionEvent { action=ACTION_MOVE, act

ionButton=0, id[0]=0, x[0]=348.67715, y[0]=894.53406, toolType[0]=TOOL_TYPE_FING

ER, id[1]=1, x[1]=865.1989, y[1]=1362.1178, toolType[1]=TOOL_TYPE_FINGER, button

State=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=2, historySize=1, e

ventTime=689571445, downTime=689567853, deviceId=8, source=0x1002 }

03-14 14:03:41.961 28564 28564 D test614 : MotionEvent { action=ACTION_MOVE, act

ionButton=0, id[0]=0, x[0]=348.67715, y[0]=894.53406, toolType[0]=TOOL_TYPE_FING

ER, id[1]=1, x[1]=865.1989, y[1]=1362.79, toolType[1]=TOOL_TYPE_FINGER, buttonSt

ate=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=2, historySize=1, eve

ntTime=689571453, downTime=689567853, deviceId=8, source=0x1002 }

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連接藍牙鼠標的點擊log

03-14 22:23:51.896 28564 28564 D test614 : MotionEvent { action=ACTION_DOWN, act

ionButton=0, id[0]=0, x[0]=270.19272, y[0]=632.4363, toolType[0]=TOOL_TYPE_MOUSE

, buttonState=BUTTON_PRIMARY, metaState=0, flags=0x0, edgeFlags=0x0, pointerCoun

t=1, historySize=0, eventTime=719579827, downTime=719579827, deviceId=16, source

=0x2002 }

03-14 22:23:52.052 28564 28564 D test614 : MotionEvent { action=ACTION_UP, actio

nButton=0, id[0]=0, x[0]=270.19272, y[0]=632.4363, toolType[0]=TOOL_TYPE_MOUSE,

buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySiz

e=0, eventTime=719579984, downTime=719579827, deviceId=16, source=0x2002 }

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