调整屏幕方向的操作。
package io.appium.android.bootstrap.handler; import android.os.RemoteException; import com.android.uiautomator.core.UiDevice; import io.appium.android.bootstrap.*; import org.json.JSONException; import java.util.Hashtable; /** * This handler is used to get or set the orientation of the device. * */ public class Orientation 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(); if (params.containsKey("orientation")) { // Set the rotation final String orientation = (String) params.get("orientation"); try { return handleRotation(orientation); } catch (final Exception e) { return getErrorResult("Unable to rotate screen: " + e.getMessage()); } } else { // Get the rotation return getRotation(); } } /** * Returns the current rotation * * @return {@link AndroidCommandResult} */ private AndroidCommandResult getRotation() { String res = null; final UiDevice d = UiDevice.getInstance(); final OrientationEnum currentRotation = OrientationEnum.fromInteger(d .getDisplayRotation()); Logger.debug("Current rotation: " + currentRotation); switch (currentRotation) { case ROTATION_0: case ROTATION_180: res = "PORTRAIT"; break; case ROTATION_90: case ROTATION_270: res = "LANDSCAPE"; break; } if (res != null) { return getSuccessResult(res); } else { return getErrorResult("Get orientation did not complete successfully"); } } /** * Set the desired rotation * * @param orientation * The rotation desired (LANDSCAPE or PORTRAIT) * @return {@link AndroidCommandResult} * @throws RemoteException * @throws InterruptedException */ private AndroidCommandResult handleRotation(final String orientation) throws RemoteException, InterruptedException { final UiDevice d = UiDevice.getInstance(); OrientationEnum desired; OrientationEnum current = OrientationEnum.fromInteger(d .getDisplayRotation()); Logger.debug("Desired orientation: " + orientation); Logger.debug("Current rotation: " + current); if (orientation.equalsIgnoreCase("LANDSCAPE")) { switch (current) { case ROTATION_0: d.setOrientationRight(); desired = OrientationEnum.ROTATION_270; break; case ROTATION_180: d.setOrientationLeft(); desired = OrientationEnum.ROTATION_270; break; default: return getSuccessResult("Already in landscape mode."); } } else { switch (current) { case ROTATION_90: case ROTATION_270: d.setOrientationNatural(); desired = OrientationEnum.ROTATION_0; break; default: return getSuccessResult("Already in portrait mode."); } } current = OrientationEnum.fromInteger(d.getDisplayRotation()); // If the orientation has not changed, // busy wait until the TIMEOUT has expired final int TIMEOUT = 2000; final long then = System.currentTimeMillis(); long now = then; while (current != desired && now - then < TIMEOUT) { Thread.sleep(100); now = System.currentTimeMillis(); current = OrientationEnum.fromInteger(d.getDisplayRotation()); } if (current != desired) { return getErrorResult("Set the orientation, but app refused to rotate."); } return getSuccessResult("Rotation (" + orientation + ") successful."); } }
这个事件有点小复杂哈,当初研究uiautomator源码时就被它折腾的不行,也只实验了左和上的方向成功。没办法,既然又遇到了,那就只能纯理论讲啦。
execute方法中,首先判断参数中是否含有orientation,如果含有调用handleRotation,否则调用getRotation。
所以execute又分流到上面的2个方法中。
这种情况是参数里含有orientation,此时,我们来看看该方法中做了哪些事。
final UiDevice d = UiDevice.getInstance(); OrientationEnum desired; OrientationEnum current = OrientationEnum.fromInteger(d .getDisplayRotation());
首先获取当前设备的方向,然后初始化一个私有变量,以备后用。其中OrientationEnum枚举类里定义了4个方向,fromInteger方法是根据整数值得到相应的枚举值,其中各个值的意思。
public enum OrientationEnum { ROTATION_0(0), ROTATION_90(1), ROTATION_180(2), ROTATION_270(3); public static OrientationEnum fromInteger(final int x) { switch (x) { case 0: return ROTATION_0; case 1: return ROTATION_90; case 2: return ROTATION_180; case 3: return ROTATION_270; } return null; }
ROTATION_0:你正常查看手机时,竖屏。此时屏幕的方向为0度。此时的power键在顶端。如下:
ROTATION_90:你将上面的屏幕向右顺时针旋转90度,此时设备旋转角度为90度,此时我的power键在右端。如果此时你的设备可以自动旋转屏幕的话,你屏幕里面的内容应该是什么样的?如下所示
ROTATION_180:从90度角再向下顺时针旋转90度,此时我的power键在下端,此时的角度为180.由于我的手机禁止了这种自由旋转,所以此时的屏幕展现在我的面前是这样一番景象:
ROTATION_270:从180度再顺时针想左旋转90度,此时我power键在左边。此时为270度,展现在我面前的图如下:
如果你理解了上面4个关键字的意思。那么下面理解代码就很简单啦。
handleRotation方法里做完初始化操作以后,就要判断客户端要求是横屏还是竖屏,如果是横屏,处理如下:
if (orientation.equalsIgnoreCase("LANDSCAPE")) { switch (current) { case ROTATION_0: d.setOrientationRight(); desired = OrientationEnum.ROTATION_270; break; case ROTATION_180: d.setOrientationLeft(); desired = OrientationEnum.ROTATION_270; break; default: return getSuccessResult("Already in landscape mode."); } }
如果是ROTATION_0,说明设备朝上,此时想要横屏,自然是顺时针向右旋转一下屏幕。此时,正常情况下可以旋转的话,屏幕里的视图应该是从左到右的,所以desired的值才会被设置为ROTATION_270.所以要分清屏幕的角度和视图的角度。下面就是向右顺时针旋转90度后,里面的视图是270度的,此时power键在右端。
如果是ROTATION_180度,说明设备拿反了,power键朝下。此时你向左顺时针旋转90度或者向右逆时针旋转90度,都能达到横屏的效果。源码里是向左旋转的,此时power键朝左,视图和上面是一样的,desired的值为ROTATION——270.
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如果客户端传递过来的命令想要的是竖屏,就要走else里的代码块:
else { switch (current) { case ROTATION_90: case ROTATION_270: d.setOrientationNatural(); desired = OrientationEnum.ROTATION_0; break; default: return getSuccessResult("Already in portrait mode."); } }
current = OrientationEnum.fromInteger(d.getDisplayRotation()); // If the orientation has not changed, // busy wait until the TIMEOUT has expired final int TIMEOUT = 2000; final long then = System.currentTimeMillis(); long now = then; while (current != desired && now - then < TIMEOUT) { Thread.sleep(100); now = System.currentTimeMillis(); current = OrientationEnum.fromInteger(d.getDisplayRotation()); } if (current != desired) { return getErrorResult("Set the orientation, but app refused to rotate."); } return getSuccessResult("Rotation (" + orientation + ") successful.");
首先获得此时屏幕的方向,然后判断一下与预期的是否相同。如果不相同,等待2秒钟,再获取一次屏幕的方向,如果经过这么一次验证完毕后,当前的屏幕方向仍然和预期的不相同,那么就返回旋转失败的消息给客户端。如果相同的话,就返回旋转成功的消息给客户端。
到此为止handleRotation处理完毕,下面处理参数里不含有orientation的情况。
该方法中就是根据当前的屏幕的方向得到横屏还是竖屏,将结果返回给客户端。很简单。
通过上面的分析,说明客户端关于屏幕方向的命令有2种:
大家要特别主要选择方向的定义,设备的方向和里面视图的方向的区别。
bootstrap之Orientation,布布扣,bubuko.com
原文地址:http://blog.csdn.net/itfootball/article/details/37924411