'''
    public static Point getAbsoluteCenterOfView(ViewNode node)
     * Gets the absolute x/y center of the specified view node.
     *
     * @param node view node to find position of.
     * @return absolute x/y center of the specified view node.
     */
'''
point = viewer.getAbsoluteCenterOfView(button)
print "Button Absolute Center Position:",point

4.2 分析和建议

'''
    public String getFocusedWindowName()
     * Gets the window that currently receives the focus.
     *
     * @return name of the window that currently receives the focus.
'''
window = viewer.getFocusedWindowName()
print "Window Name:",window.encode('utf-8')

6.2 解析

其实就是获得当前打开的窗口的packageName/activityName，输出与HierarchyViewer工具检测到的信息一致，所以猜想其用到同样的方法。

输出：

'''
    public boolean visible(ViewNode node)
      * Gets the visibility of a given element.
     * @param selector selector for the view.
     * @return True if the element is visible.
'''
isVisible = viewer.visible(button)
print "is visible:",isVisible

from com.android.monkeyrunner import MonkeyRunner,MonkeyDevice
from com.android.monkeyrunner.easy import EasyMonkeyDevice,By
from com.android.chimpchat.hierarchyviewer import HierarchyViewer
from com.android.hierarchyviewerlib.models import ViewNode, Window
from java.awt import Point

#from com.android.hierarchyviewerlib.device import 

#Connect to the target targetDevice
targetDevice = MonkeyRunner.waitForConnection()

easy_device = EasyMonkeyDevice(targetDevice)  #touch a button by id would need this
targetDevice.startActivity(component="com.example.android.notepad/com.example.android.notepad.NotesList")

#time.sleep(2000)
#invoke the menu options
MonkeyRunner.sleep(6)
targetDevice.press('KEYCODE_MENU', MonkeyDevice.DOWN_AND_UP);

'''
     public ViewNode findViewById(String id) 
     * @param id id for the view.
     * @return view with the specified ID, or {@code null} if no view found.
'''
viewer = targetDevice.getHierarchyViewer()
button = viewer.findViewById('id/title')
text = viewer.getText(button)
print text.encode('utf-8')


'''
     public ViewNode findViewById(String id, ViewNode rootNode) 
     * Find a view by ID, starting from the given root node
     * @param id ID of the view you're looking for
     * @param rootNode the ViewNode at which to begin the traversal
     * @return view with the specified ID, or {@code null} if no view found.
     
'''
iconMenuView = viewer.findViewById('id/icon_menu')
button = viewer.findViewById('id/title',iconMenuView)
print "Button Text:",text.encode('utf-8')

'''
    public String getFocusedWindowName()
     * Gets the window that currently receives the focus.
     *
     * @return name of the window that currently receives the focus.
'''
window = viewer.getFocusedWindowName()
print "Window Name:",window.encode('utf-8')

'''
    public static Point getAbsoluteCenterOfView(ViewNode node)
     * Gets the absolute x/y center of the specified view node.
     *
     * @param node view node to find position of.
     * @return absolute x/y center of the specified view node.
     */
'''
point = viewer.getAbsoluteCenterOfView(button)
print "Button Absolute Center Position:",point

'''
    public static Point getAbsolutePositionOfView(ViewNode node)
     * Gets the absolute x/y position of the view node.
     *
     * @param node view node to find position of.
     * @return point specifying the x/y position of the node.
'''
point = viewer.getAbsolutePositionOfView(button)
print "Button Absolute Position:", point

'''
    public boolean visible(ViewNode node)
      * Gets the visibility of a given element.
     * @param selector selector for the view.
     * @return True if the element is visible.
'''
isVisible = viewer.visible(button)
print "is visible:",isVisible

9.附上HierarchyViewer类的源码方便参照

/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.android.chimpchat.hierarchyviewer;
import com.android.ddmlib.IDevice;
import com.android.ddmlib.Log;
import com.android.hierarchyviewerlib.device.DeviceBridge;
import com.android.hierarchyviewerlib.device.ViewServerDevice;
import com.android.hierarchyviewerlib.models.ViewNode;
import com.android.hierarchyviewerlib.models.Window;
import org.eclipse.swt.graphics.Point;
/**
 * Class for querying the view hierarchy of the device.
 */
public class HierarchyViewer {
    public static final String TAG = "hierarchyviewer";
    private IDevice mDevice;
    /**
     * Constructs the hierarchy viewer for the specified device.
     *
     * @param device The Android device to connect to.
     */
    public HierarchyViewer(IDevice device) {
        this.mDevice = device;
        setupViewServer();
    }
    private void setupViewServer() {
        DeviceBridge.setupDeviceForward(mDevice);
        if (!DeviceBridge.isViewServerRunning(mDevice)) {
            if (!DeviceBridge.startViewServer(mDevice)) {
                // TODO: Get rid of this delay.
                try {
                    Thread.sleep(2000);
                } catch (InterruptedException e) {
                }
                if (!DeviceBridge.startViewServer(mDevice)) {
                    Log.e(TAG, "Unable to debug device " + mDevice);
                    throw new RuntimeException("Could not connect to the view server");
                }
                return;
            }
        }
        DeviceBridge.loadViewServerInfo(mDevice);
    }
    /**
     * Find a view by id.
     *
     * @param id id for the view.
     * @return view with the specified ID, or {@code null} if no view found.
     */
    public ViewNode findViewById(String id) {
        ViewNode rootNode = DeviceBridge.loadWindowData(
                new Window(new ViewServerDevice(mDevice), "", 0xffffffff));
        if (rootNode == null) {
            throw new RuntimeException("Could not dump view");
        }
        return findViewById(id, rootNode);
    }
    /**
     * Find a view by ID, starting from the given root node
     * @param id ID of the view you're looking for
     * @param rootNode the ViewNode at which to begin the traversal
     * @return view with the specified ID, or {@code null} if no view found.
     */
    public ViewNode findViewById(String id, ViewNode rootNode) {
        if (rootNode.id.equals(id)) {
            return rootNode;
        }
        for (ViewNode child : rootNode.children) {
            ViewNode found = findViewById(id,child);
            if (found != null) {
                return found;
            }
        }
        return null;
    }
    /**
     * Gets the window that currently receives the focus.
     *
     * @return name of the window that currently receives the focus.
     */
    public String getFocusedWindowName() {
        int id = DeviceBridge.getFocusedWindow(mDevice);
        Window[] windows = DeviceBridge.loadWindows(new ViewServerDevice(mDevice), mDevice);
        for (Window w : windows) {
            if (w.getHashCode() == id)
                return w.getTitle();
        }
        return null;
    }
    /**
     * Gets the absolute x/y position of the view node.
     *
     * @param node view node to find position of.
     * @return point specifying the x/y position of the node.
     */
    public static Point getAbsolutePositionOfView(ViewNode node) {
        int x = node.left;
        int y = node.top;
        ViewNode p = node.parent;
        while (p != null) {
            x += p.left - p.scrollX;
            y += p.top - p.scrollY;
            p = p.parent;
        }
        return new Point(x, y);
    }
    /**
     * Gets the absolute x/y center of the specified view node.
     *
     * @param node view node to find position of.
     * @return absolute x/y center of the specified view node.
     */
    public static Point getAbsoluteCenterOfView(ViewNode node) {
        Point point = getAbsolutePositionOfView(node);
        return new Point(
                point.x + (node.width / 2), point.y + (node.height / 2));
    }
    /**
     * Gets the visibility of a given element.
     *
     * @param selector selector for the view.
     * @return True if the element is visible.
     */
    public boolean visible(ViewNode node) {
        boolean ret = (node != null)
                && node.namedProperties.containsKey("getVisibility()")
                && "VISIBLE".equalsIgnoreCase(
                        node.namedProperties.get("getVisibility()").value);
        return ret;
    }
    /**
     * Gets the text of a given element.
     *
     * @param selector selector for the view.
     * @return the text of the given element.
     */
    public String getText(ViewNode node) {
        if (node == null) {
            throw new RuntimeException("Node not found");
        }
        ViewNode.Property textProperty = node.namedProperties.get("text:mText");
        if (textProperty == null) {
            // give it another chance, ICS ViewServer returns mText
            textProperty = node.namedProperties.get("mText");
            if (textProperty == null) {
                throw new RuntimeException("No text property on node");
            }
        }
        return textProperty.value;
    }
}

10. 参考阅读

• Robotium之Android控件定位实践和建议(Appium/UIAutomator姊妹篇)
  
• UIAutomator定位Android控件的方法实践和建议(Appium姊妹篇)
  
• Appium基于安卓的各种FindElement的控件定位方法实践和建议