本系列的上一篇文章《Monkey源码分析之事件源》中我们描述了monkey是怎么从事件源取得命令，然后将命令转换成事件放到事件队列里面的，但是到现在位置我们还没有了解monkey里面的事件是怎么一回事，本篇文章就以这个问题作为切入点，尝试去搞清楚monkey的event架构是怎么样的，然后为什么是这样架构的，以及它又是怎么注入事件来触发点击等动作的。
在看这篇文章之前，希望大家最好先去看下另外几篇博文，这样理解起来就会更容易更清晰了：
public class MonkeyKeyEvent extends MonkeyEvent { private long mDownTime = -1; private int mMetaState = -1; private int mAction = -1; private int mKeyCode = -1; private int mScancode = -1; private int mRepeatCount = -1; private int mDeviceId = -1; private long mEventTime = -1; private KeyEvent keyEvent = null; public MonkeyKeyEvent(int action, int keycode) { super(EVENT_TYPE_KEY); mAction = action; mKeyCode = keycode; } public MonkeyKeyEvent(KeyEvent e) { super(EVENT_TYPE_KEY); keyEvent = e; } public MonkeyKeyEvent(long downTime, long eventTime, int action, int code, int repeat, int metaState, int device, int scancode) { super(EVENT_TYPE_KEY); mAction = action; mKeyCode = code; mMetaState = metaState; mScancode = scancode; mRepeatCount = repeat; mDeviceId = device; mDownTime = downTime; mEventTime = eventTime; }MonkeyKeyEvent有多个构造函数，参数都不一样，但是目的都只有一个，通过传进来的参数获得足够的信息保存成成员变量，以便今后创建一个android.view.KeyEvent,皆因该系统事件就是可以根据不同的参数进行初始化的。比如下面的getEvent方法就是根据不同的参数创建对应的KeyEvent的。注意这系统KeyEvent是非常重要的，因为我们今后通过WindowManager注入事件就要把它的对象传进去去驱动相应的按键相关的事件。 * @return the key event */ private KeyEvent getEvent() { if (keyEvent == null) { if (mDeviceId < 0) { keyEvent = new KeyEvent(mAction, mKeyCode); } else { // for scripts keyEvent = new KeyEvent(mDownTime, mEventTime, mAction, mKeyCode, mRepeatCount, mMetaState, mDeviceId, mScancode); } } return keyEvent; }支持的成员变量比较多，名字都挺浅显易懂，我这里就简单描述两个我们最常用的：public static final int KEYCODE_MENU = 82;
private int run(String[] args) { ... if (!getSystemInterfaces()) { return -3; } .... }那么我们进入该方法看下我们需要的WindowManager是怎么初始化的。 private boolean getSystemInterfaces() { mAm = ActivityManagerNative.getDefault(); if (mAm == null) { System.err.println("** Error: Unable to connect to activity manager; is the system " + "running?"); return false; } mWm = IWindowManager.Stub.asInterface(ServiceManager.getService("window")); if (mWm == null) { System.err.println("** Error: Unable to connect to window manager; is the system " + "running?"); return false; } mPm = IPackageManager.Stub.asInterface(ServiceManager.getService("package")); if (mPm == null) { System.err.println("** Error: Unable to connect to package manager; is the system " + "running?"); return false; } try { mAm.setActivityController(new ActivityController()); mNetworkMonitor.register(mAm); } catch (RemoteException e) { System.err.println("** Failed talking with activity manager!"); return false; } return true; } 
@Override public int injectEvent(IWindowManager iwm, IActivityManager iam, int verbose) { if (verbose > 1) { String note; if (mAction == KeyEvent.ACTION_UP) { note = "ACTION_UP"; } else { note = "ACTION_DOWN"; } try { System.out.println(":Sending Key (" + note + "): " + mKeyCode + " // " + MonkeySourceRandom.getKeyName(mKeyCode)); } catch (ArrayIndexOutOfBoundsException e) { System.out.println(":Sending Key (" + note + "): " + mKeyCode + " // Unknown key event"); } } // inject key event try { if (!iwm.injectKeyEvent(getEvent(), false)) { return MonkeyEvent.INJECT_FAIL; } } catch (RemoteException ex) { return MonkeyEvent.INJECT_ERROR_REMOTE_EXCEPTION; } return MonkeyEvent.INJECT_SUCCESS; }注意传入参数 @Override public int injectEvent(IWindowManager iwm, IActivityManager iam, int verbose) { if (verbose > 1) { System.out.println("Sleeping for " + mThrottle + " milliseconds"); } try { Thread.sleep(mThrottle); } catch (InterruptedException e1) { System.out.println("** Monkey interrupted in sleep."); return MonkeyEvent.INJECT_FAIL; } return MonkeyEvent.INJECT_SUCCESS; }所以虽然不同的MonkeyEvent实现类都实现了父类的injectEvent方法，但是并不是所有的的MonkeyEvent都需要注入事件的。所有这个接口方法的名字我觉得Google 工程师起得不好，比如叫做handleEvent就不会造成混乱了（个人见解)| 事件处理方式 | MonkeyEvent实现类 | 关键代码 | 注释 |
| 通过WindowManager注入事件 | MonkeyKeyEvent | injectKeyiwm.injectKeyEvent(getEvent(),false)Event | |
| MonkeyTouchEvent | iwm.injectPointerEvent(me,false) | | |
| MonkeyTrackballEvent | iwm.injectTrackballEvent(me,false) | | |
| 通过往事件设备/dev/input/event0发送命令注入事件 | MonkeyFlipEvent | FileOutputStream("/dev/input/event0") | |
| 通过ActvityManager的startInstrumentation方法启动一个应用 | MonkeyInstrumentationEvent | iam.startInstrumentation(cn,null, 0,args,null) | |
| 睡眠 | MonkeyThrottleEvent | Thread.sleep(mThrottle) | |
| MonkeyWaitEvent | Thread.sleep(mWaitTime) | |
| 作者 | 自主博客 | 微信 | CSDN |
| 天地会珠海分舵 | http://techgogogo.com | 服务号:TechGoGoGo 扫描码: | 向AI问一下细节 免责声明：本站发布的内容（图片、视频和文字）以原创、转载和分享为主，文章观点不代表本网站立场，如果涉及侵权请联系站长邮箱：is@yisu.com进行举报，并提供相关证据，一经查实，将立刻删除涉嫌侵权内容。 猜你喜欢最新资讯相关推荐相关标签AI
助 手 |
