概述

客户有个需求，需要系统提供一个 模拟发送按键 的接口，之前考虑过使用adb命令的方式提供，最后 是使用了 系统 InputManager.java 提供的 injectInputEvent 注入事件的方法解决了

解决方案

调用

@Override
    public boolean sendInputKeyCode(int keyCode) {
        long time = SystemClock.uptimeMillis();
        boolean downEvent =                       injectKeyEvent(time,KeyEvent.ACTION_DOWN,keyCode,0);
        if(downEvent){
            boolean upEvent = injectKeyEvent(time,KeyEvent.ACTION_UP,keyCode,0);
            if(upEvent){
                return true;
            }
        }
        return false;
    }

实现

private boolean injectKeyEvent(long time, int action, int keycode, int repeat) {
        //KeyEvent keyEvent = new KeyEvent(time, time, action, keycode, repeat);
        boolean result =false ;
        KeyEvent keyEvent = KeyEvent.obtain(time, time, action, keycode,
                repeat, 0, -1, 0, 0,
                InputDevice.SOURCE_KEYBOARD,null);
        result = InputManager.getInstance().injectInputEvent(keyEvent,0);
        keyEvent.recycle();
        return result;
    }