我有一个模拟的 Android 设备和 Appium。我的测试成功启动了正确的活动并在特定的文本字段中键入。但是，当我尝试查找相同的文本字段以检查其中的文本时，我得到"An element could not be located on the page using the given search parameters."即使我尝试重新使用该元素而不是第二次搜索它，它仍然会失败并显示相同的消息。我应该怎么做？也许第二个的上下文findElement()是错误的——我也找不到文本字段旁边的按钮。
这是一个 git repo，其中包含一个应用程序和一个测试项目。失败的 JUnit 测试证明了这个问题：https ://github.com/achengs/an-appium-question
下面的详细信息（代码和 Appium 日志交错）
这是第一个成功的 findElement。Activity 的布局 xml 文件具有我要查找的文本字段的此属性：android:id="@+id/edit_message"
public static final String MESSAGE_TO_SEND = "edit_message";
...
WebElement e = driver.findElement(By.id(MESSAGE_TO_SEND));
首先 findElement 成功：
debug: Appium request initiated at /wd/hub/session/0ec259be-87e0-47f6-9279-da577fe29a07/element
debug: Request received with params: {"using":"id","value":"edit_message"}
info: Pushing command to appium work queue: ["find",{"strategy":"id","selector":"edit_message","context":"","multiple":false}]
info: [BOOTSTRAP] [info] Got data from client: {"cmd":"action","action":"find","params":{"strategy":"id","selector":"edit_message","context":"","multiple":false}}
info: [BOOTSTRAP] [info] Got command of type ACTION
info: [BOOTSTRAP] [debug] Got command action: find
info: [BOOTSTRAP] [debug] Finding edit_message using ID with the contextId:
info: [BOOTSTRAP] [info] Returning result: {"value":{"ELEMENT":"1"},"status":0}
info: Responding to client with success: {"status":0,"value":{"ELEMENT":"1"},"sessionId":"0ec259be-87e0-47f6-9279-da577fe29a07"}
POST /wd/hub/session/0ec259be-87e0-47f6-9279-da577fe29a07/element 200 5656ms - 109b
打招呼！
String text = "hello!";
e.sendKeys(text);
这成功了：
debug: Appium request initiated at /wd/hub/session/0ec259be-87e0-47f6-9279-da577fe29a07/element/1/value
debug: Request received with params: {"id":"1","value":["hello!"]}
info: Pushing command to appium work queue: ["element:setText",{"elementId":"1","text":"hello!"}]
info: [BOOTSTRAP] [info] Got data from client: {"cmd":"action","action":"element:setText","params":{"elementId":"1","text":"hello!"}}
info: [BOOTSTRAP] [info] Got command of type ACTION
info: [BOOTSTRAP] [debug] Got command action: setText
info: [BOOTSTRAP] [info] Returning result: {"value":true,"status":0}
info: Responding to client with success: {"status":0,"value":true,"sessionId":"0ec259be-87e0-47f6-9279-da577fe29a07"}
POST /wd/hub/session/0ec259be-87e0-47f6-9279-da577fe29a07/element/1/value 200 4215ms - 89b
这是第二个失败的 findElement。（如果我跳过这个 findElement 并重新使用原来的那个——或者如果我尝试在文本字段旁边找到“发送”按钮，我仍然会遇到类似的失败）
WebElement f = driver.findElement(By.id(MESSAGE_TO_SEND));
这是失败的日志：
debug: Appium request initiated at /wd/hub/session/0ec259be-87e0-47f6-9279-da577fe29a07/element
debug: Request received with params: {"using":"id","value":"edit_message"}
info: Pushing command to appium work queue: ["find",{"strategy":"id","selector":"edit_message","context":"","multiple":false}]
info: [BOOTSTRAP] [info] Got data from client: {"cmd":"action","action":"find","params":{"strategy":"id","selector":"edit_message","context":"","multiple":false}}
info: [BOOTSTRAP] [info] Got command of type ACTION
info: [BOOTSTRAP] [debug] Got command action: find
info: [BOOTSTRAP] [debug] Finding edit_message using ID with the contextId:
info: [BOOTSTRAP] [info] Returning result: {"value":"No element found","status":7}
info: Responding to client with error: {"status":7,"value":{"message":"An element could not be located on the page using the given search parameters.","origValue":"No element found"},"sessionId":"0ec259be-87e0-47f6-9279-da577fe29a07"}
POST /wd/hub/session/0ec259be-87e0-47f6-9279-da577fe29a07/element 500 874ms - 223b
有一个 HTML 请求。我正在测试一个原生 Android 应用程序。这是当前正在测试的 Activity 的布局 xml。如果还有什么我应该在这里包括的，请告诉我。
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<EditText android:id="@+id/edit_message"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:hint="@string/edit_message" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/button_send"
android:onClick="sendMessage" android:id="@+id/send"/>
</LinearLayout>