手机自动化测试：appium源码分析之bootstrap九

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TouchLongClick

package io.appium.android.bootstrap.handler;

import android.os.SystemClock;

import com.android.uiautomator.common.ReflectionUtils;

import com.android.uiautomator.core.UiObjectNotFoundException;

import io.appium.android.bootstrap.Logger;

import java.lang.reflect.Method;

/**

* This handler is used to long click elements in the Android UI.

public class TouchLongClick extends TouchEvent {

* UiAutomator has a broken longClick, so we'll try to implement it using the

* touchDown / touchUp events.

private boolean correctLongClick(final int x, final int y, final int duration) {

try {

* bridge.getClass() returns ShellUiAutomatorBridge on API 18/19 so use

* the super class.

final ReflectionUtils utils = new ReflectionUtils();

final Method touchDown = utils.getControllerMethod("touchDown", int.class,

int.class);

final Method touchUp = utils.getControllerMethod("touchUp", int.class, int.class);

if ((Boolean) touchDown.invoke(utils.getController(), x, y)) {

SystemClock.sleep(duration);

if ((Boolean) touchUp.invoke(utils.getController(), x, y)) {

return true;

}

return false;

} catch (final Exception e) {

Logger.debug("Problem invoking correct long click: " + e);

return false;

}

@Override

protected boolean executeTouchEvent() throws UiObjectNotFoundException {

final Object paramDuration = params.get("duration");

int duration = 2000; // two seconds

if (paramDuration != null) {

duration = Integer.parseInt(paramDuration.toString());

}

printEventDebugLine("TouchLongClick", duration);

if (correctLongClick(clickX, clickY, duration)) {

return true;

}

// if correctLongClick failed and we have an element

// then uiautomator's longClick is used as a fallback.

if (isElement) {

Logger.debug("Falling back to broken longClick");

return el.longClick();

}

return false;

}

TouchLongClick类继承于TouchEvent，而TouchEvent继承于CommandHandler.调用TouchEvent的execute的方法中，调用了executeTouchEvent方法，所以我们来看上面的executeTouchEvent就好了，执行长点击事件，在uiautomator里有UiObject.longClick()方法，但是写过case的人知道，有时候这个方法达不到我们的需求，但是我们是自己了反射调用TouchDown和TouchUp两个个方法，而在appium里帮你解决了，它自己就帮你做到了这一点，如果你传入到是控件对象，那无可厚非，还是调用UiObject.longClick方法，如果你想根据坐标，时间在点击的话，那么就调用currectLongClick这个appium给你封装好的方法。

final ReflectionUtils utils = new ReflectionUtils();

final Method touchDown = utils.getControllerMethod("touchDown", int.class,

int.class);

final Method touchUp = utils.getControllerMethod("touchUp", int.class, int.class);

通过反射得到uiautomator里的没有公开的类，从而我们想要的方法touchDown和touchUp.

public ReflectionUtils() throws IllegalArgumentException,

IllegalAccessException, SecurityException, NoSuchFieldException {

final UiDevice device = UiDevice.getInstance();

final Object bridge = enableField(device.getClass(), "mUiAutomationBridge")

.get(device);

if (API_18) {

controller = enableField(bridge.getClass().getSuperclass(),

"mInteractionController").get(bridge);

} else {

controller = enableField(bridge.getClass(), "mInteractionController")

.get(bridge);

}

因为uiautomator api的改动，在api18以上的版本中，mInteractionController是存在于UiAutomationBridge的父类中的变量，而在18以下的版本中它是存在于本类中的。所以反射时会有一点点小小点差异，但总的来说都是要获得InteractionController这个类，因为这个类里面存在有我们要但touch类但方法。最后我们就能轻松调用鼠标的TouchUp和TouchDown他们啦。然后再加上时间，长按就实现啦。

TouchUp

package io.appium.android.bootstrap.handler;

import com.android.uiautomator.common.ReflectionUtils;

import com.android.uiautomator.core.UiObjectNotFoundException;

import io.appium.android.bootstrap.Logger;

import java.lang.reflect.Method;

/**

* This handler is used to perform a touchDown event on an element in the

* Android UI.

public class TouchDown extends TouchEvent {

@Override

protected boolean executeTouchEvent() throws UiObjectNotFoundException {

printEventDebugLine("TouchDown");

try {

final ReflectionUtils utils = new ReflectionUtils();

final Method touchDown = utils.getControllerMethod("touchDown", int.class,

int.class);

return (Boolean) touchDown.invoke(utils.getController(), clickX, clickY);

} catch (final Exception e) {

Logger.debug("Problem invoking touchDown: " + e);

return false;

}

有了上面的分析，对TouchUp和TouchDown还有TouchMove的分析就不用再多说了，都是反射的原理