手机自动化测试：appium源码分析之bootstrap五

手机自动化测试：appium源码分析之bootstrap五

 

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Swipe代码：

package io.appium.android.bootstrap.handler;

import com.android.uiautomator.core.UiDevice;

import com.android.uiautomator.core.UiObjectNotFoundException;

import io.appium.android.bootstrap.*;

import io.appium.android.bootstrap.exceptions.InvalidCoordinatesException;

import io.appium.android.bootstrap.utils.Point;

import org.json.JSONException;

import java.util.Hashtable;

/**

* This handler is used to swipe.

*

*/

public class Swipe extends CommandHandler {

/*

* @param command The {@link AndroidCommand} used for this handler.

*

* @return {@link AndroidCommandResult}

*

* @throws JSONException

*

* @see io.appium.android.bootstrap.CommandHandler#execute(io.appium.android.

* bootstrap.AndroidCommand)

*/

@Override

public AndroidCommandResult execute(final AndroidCommand command)

throws JSONException {

final Hashtable<String, Object> params = command.params();

final Point start = new Point(params.get("startX"), params.get("startY"));

final Point end = new Point(params.get("endX"), params.get("endY"));

final Integer steps = (Integer) params.get("steps");

final UiDevice device = UiDevice.getInstance();

Point absStartPos = new Point();

Point absEndPos = new Point();

if (command.isElementCommand()) {

try {

final AndroidElement el = command.getElement();

absStartPos = el.getAbsolutePosition(start);

absEndPos = el.getAbsolutePosition(end, false);

} catch (final UiObjectNotFoundException e) {

return getErrorResult(e.getMessage());

} catch (final InvalidCoordinatesException e) {

return getErrorResult(e.getMessage());

} catch (final Exception e) { // handle NullPointerException

return getErrorResult("Unknown error");

}

} else {

try {

absStartPos = getDeviceAbsPos(start);

absEndPos = getDeviceAbsPos(end);

} catch (final InvalidCoordinatesException e) {

return getErrorResult(e.getMessage());

}

}

Logger.debug("Swiping from " + absStartPos.toString() + " to "

+ absEndPos.toString() + " with steps: " + steps.toString());

final boolean rv = device.swipe(absStartPos.x.intValue(),

absStartPos.y.intValue(), absEndPos.x.intValue(),

absEndPos.y.intValue(), steps);

if (!rv) {

return getErrorResult("The swipe did not complete successfully");

}

return getSuccessResult(rv);

}

}

先分析源码：

final Hashtable<String, Object> params = command.params();
final Point start = new Point(params.get("startX"), params.get("startY"));
final Point end = new Point(params.get("endX"), params.get("endY"));
final Integer steps = (Integer) params.get("steps");
final UiDevice device = UiDevice.getInstance();

Point absStartPos = new Point();
    Point absEndPos = new Point();

首先从命令里获取参数，后解析出3个变量：起始点start、终点end、步骤steps。然后获得设备对象，定义2个私有Point对象,以备后用。
然后分条件处理，处理控件还是处理坐标。

控件：

final AndroidElement el = command.getElement();
absStartPos = el.getAbsolutePosition(start);
absEndPos = el.getAbsolutePosition(end, false);

首先获取控件对象，再通过getAbsolutePosition传入不同的参数获得在该控件上点击的起始点和结束点。

public Point getAbsolutePosition(final Point point,

final boolean boundsChecking) throws UiObjectNotFoundException,

InvalidCoordinatesException {

final Rect rect = el.getBounds();

final Point pos = new Point();

Logger.debug("Element bounds: " + rect.toShortString());

if (point.x == 0) {

pos.x = rect.width() * 0.5 + rect.left;

} else if (point.x <= 1) {

pos.x = rect.width() * point.x + rect.left;

} else {

pos.x = rect.left + point.x;

}

if (boundsChecking) {

if (pos.x > rect.right || pos.x < rect.left) {

throw new InvalidCoordinatesException("X coordinate ("

+ pos.x.toString() + " is outside of element rect: "

+ rect.toShortString());

}

}

if (point.y == 0) {

pos.y = rect.height() * 0.5 + rect.top;

} else if (point.y <= 1) {

pos.y = rect.height() * point.y + rect.top;

} else {

pos.y = rect.left + point.y;

}

if (boundsChecking) {

if (pos.y > rect.bottom || pos.y < rect.top) {

throw new InvalidCoordinatesException("Y coordinate ("

+ pos.y.toString() + " is outside of element rect: "

+ rect.toShortString());

}

}

return pos;

}

上面的代码首先分析x坐标然后分析y坐标。x和y坐标的判断和处理时一样的

首先判断x坐标是否为0，如果为0，定义初始点的x坐标为控件的中心点的横坐标。如果x的坐标小于1，说明坐标为相对坐标，用百分比来求值，此时就要与宽度做乘积运算得到具体值。如果上面2种情况都不符合，那就是具体坐标值，那就直接元素的x坐标值加上控件的边框左坐标值。
最后根据传入的boolean值来判断是否做一个超出边界的验证。如果超出边界就跑出异常。y坐标的获取方式类似。最后得到坐标值并返回，回到execute方法中。

坐标

absStartPos = getDeviceAbsPos(start);
absEndPos = getDeviceAbsPos(end);

通过调用getDeviceAbsPos()方法得到坐标值来初始化之前声明的私有Point对象.

protected static Point getDeviceAbsPos(final Point point)

throws InvalidCoordinatesException {

final UiDevice d = UiDevice.getInstance();

final Point retPos = new Point(point); // copy inputed point

final Double width = (double) d.getDisplayWidth();

if (point.x < 1) {

retPos.x = width * point.x;

}

if (retPos.x > width || retPos.x < 0) {

throw new InvalidCoordinatesException("X coordinate ("

+ retPos.x.toString() + " is outside of screen width: "

+ width.toString());

}

final Double height = (double) d.getDisplayHeight();

if (point.y < 1) {

retPos.y = height * point.y;

}

if (retPos.y > height || retPos.y < 0) {

throw new InvalidCoordinatesException("Y coordinate ("

+ retPos.y.toString() + " is outside of screen height: "

+ height.toString());

}

return retPos;

}

类似于上面的方法，也是要先判断传过来的坐标值是否小于1，如果小于1，当作百分比来球坐标值。如果超出屏幕的范围抛出异常，最后返回坐标值回到execute方法。

final boolean rv = device.swipe(absStartPos.x.intValue(),
absStartPos.y.intValue(), absEndPos.x.intValue(),
absEndPos.y.intValue(), steps);

最后调用UiDevice.swipe方法来执行命令，判断是否执行成功。

总结
执行swipe命令有2中命令格式
a.控件
b.坐标
坐标又分为相对坐标百分比和绝对坐标两种方法。