Android 文本视图中文本的浓缩咖啡不'；不匹配所选视图

我在喝浓缩咖啡时遇到了一个奇怪的测试失败。下面是在显示的对话框中测试TextView。我得到以下错误：

   com.google.android.apps.common.testing.ui.espresso.base.DefaultFailureHandler$AssertionFailedWithCauseError: 'with string from resource id: <2131099772>' doesn't match the selected view.
Expected: with string from resource id: <2131099772>[my_content] value: Test Content Available
Got: "TextView{id=2131296340, res-name=dialog_content, visibility=VISIBLE, width=620, height=38, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0, text=Test Content Available, input-type=0, ime-target=false}"

at dalvik.system.VMStack.getThreadStackTrace(Native Method)
at java.lang.Thread.getStackTrace(Thread.java:579)
at com.google.android.apps.common.testing.ui.espresso.base.DefaultFailureHandler.getUserFriendlyError(DefaultFailureHandler.java:69)
at com.google.android.apps.common.testing.ui.espresso.base.DefaultFailureHandler.handle(DefaultFailureHandler.java:40)
at com.google.android.apps.common.testing.ui.espresso.ViewInteraction.runSynchronouslyOnUiThread(ViewInteraction.java:159)
at com.google.android.apps.common.testing.ui.espresso.ViewInteraction.check(ViewInteraction.java:133)
at com.myapp.testContentDetails(FPATest.java:109)
at java.lang.reflect.Method.invokeNative(Native Method)
at android.test.InstrumentationTestCase.runMethod(InstrumentationTestCase.java:214)
at android.test.InstrumentationTestCase.runTest(InstrumentationTestCase.java:199)
at android.test.ActivityInstrumentationTestCase2.runTest(ActivityInstrumentationTestCase2.java:192)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:191)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:176)
at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:554)
at com.google.android.apps.common.testing.testrunner.GoogleInstrumentationTestRunner.onStart(GoogleInstrumentationTestRunner.java:167)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1701)
Caused by: junit.framework.AssertionFailedError: 'with string from resource id: <2131099772>' doesn't match the selected view.
Expected: with string from resource id: <2131099772>[my_content] value: Test Content Available
Got: "TextView{id=2131296340, res-name=dialog_content, visibility=VISIBLE, width=620, height=38, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0, text=Test Content Available, input-type=0, ime-target=false}"

at com.google.android.apps.common.testing.ui.espresso.matcher.ViewMatchers.assertThat(ViewMatchers.java:789)
at com.google.android.apps.common.testing.ui.espresso.assertion.ViewAssertions$2.check(ViewAssertions.java:76)
at com.google.android.apps.common.testing.ui.espresso.ViewInteraction$2.run(ViewInteraction.java:145)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:422)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5081)
at java.lang.reflect.Method.invokeNative(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:781)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
at dalvik.system.NativeStart.main(Native Method)

我也试着用下面的语句来做，但是得到了一个NoMatchingViewException，即使是通过异常的视图层次结构中的视图显示

onView(withText(R.string.my_content)).check(
                matches(isDisplayed()));

---

关于为什么会失败有什么帮助吗？值得注意的是，我能够在对话框的同级字段上显示withText（）IsDisplay（）

这个答案是根据@haffax上面的评论创建的

/**
 * Original source from Espresso library, modified to handle spanned fields
 * 
 * Returns a matcher that matches a descendant of {@link TextView} that is
 * displaying the string associated with the given resource id.
 * 
 * @param resourceId
 *            the string resource the text view is expected to hold.
 */
public static Matcher<View> withText(final int resourceId) {

    return new BoundedMatcher<View, TextView>(TextView.class) {
        private String resourceName = null;
        private String expectedText = null;

        @Override
        public void describeTo(Description description) {
            description.appendText("with string from resource id: ");
            description.appendValue(resourceId);
            if (null != this.resourceName) {
                description.appendText("[");
                description.appendText(this.resourceName);
                description.appendText("]");
            }
            if (null != this.expectedText) {
                description.appendText(" value: ");
                description.appendText(this.expectedText);
            }
        }

        @Override
        public boolean matchesSafely(TextView textView) {
            if (null == this.expectedText) {
                try {
                    this.expectedText = textView.getResources().getString(
                            resourceId);
                    this.resourceName = textView.getResources()
                            .getResourceEntryName(resourceId);
                } catch (Resources.NotFoundException ignored) {
                    /*
                     * view could be from a context unaware of the resource
                     * id.
                     */
                }
            }
            if (null != this.expectedText) {
                return this.expectedText.equals(textView.getText()
                        .toString());
            } else {
                return false;
            }
        }
    };
}

/**
*来自Espresso library的原始源代码，已修改为处理跨字段
* 
*返回匹配{@link TextView}的子代的匹配器，该子代是
*显示与给定资源id关联的字符串。
* 
*@param resourceId
*文本视图应包含的字符串资源。
*/
带文本的公共静态匹配器（最终int-resourceId）{
返回新的BoundedMatcher（TextView.class）{
私有字符串resourceName=null；
私有字符串expectedText=null；
@凌驾
公共无效说明（说明）{
description.appendText（“带有来自资源id的字符串：”）；
description.appendValue（resourceId）；
if（null！=此.resourceName）{
说明.附录文本（“[”）；
description.appendText（this.resourceName）；
说明.附录文本（“]”）；
}
if（null！=this.expectedText）{
description.appendText（“值：”）；
description.appendText（this.expectedText）；
}
}
@凌驾
公共布尔匹配安全（TextView TextView）{
if（null==this.expectedText）{
试一试{
this.expectedText=textView.getResources（）.getString(
资源ID）；
this.resourceName=textView.getResources（）
.getResourceEntryName（资源ID）；
}捕获（已忽略Resources.NotFoundException）{
/*
*视图可以来自不知道资源的上下文
*身份证。
*/
}
}
if（null！=this.expectedText）{
返回此.expectedText.equals（textView.getText（）
.toString（））；
}否则{
返回false；
}
}
};
}

Espresso附带的内置withText（int resourceId）有问题。仅当检查的文本是java.lang.String时，它才起作用，但使用的许多文本是CharSequence的其他子类，如Editable或Spanable。确保您正在使用的文本类型实际上是字符串，如果不是，请编写自己的匹配器，在不查看类型的情况下匹配字符串内容。@haffax-Perfect！我在TextView中使用Html.fromHtml（）设置了文本，这当然会产生一个跨对象。编写了一个自定义匹配器，它只在#matchessesafely（）中的textView.getText（）上执行了一个#toString（），它工作得非常好。如果你想将此作为答案提交，我会将其标记为已接受，谢谢！在我的例子中，我匹配了屏幕上的所有caps文本。使用allCaps属性集时，真正的字符串是小写的，所以我必须匹配小写。

/**
 * Original source from Espresso library, modified to handle spanned fields
 * 
 * Returns a matcher that matches a descendant of {@link TextView} that is
 * displaying the string associated with the given resource id.
 * 
 * @param resourceId
 *            the string resource the text view is expected to hold.
 */
public static Matcher<View> withText(final int resourceId) {

    return new BoundedMatcher<View, TextView>(TextView.class) {
        private String resourceName = null;
        private String expectedText = null;

        @Override
        public void describeTo(Description description) {
            description.appendText("with string from resource id: ");
            description.appendValue(resourceId);
            if (null != this.resourceName) {
                description.appendText("[");
                description.appendText(this.resourceName);
                description.appendText("]");
            }
            if (null != this.expectedText) {
                description.appendText(" value: ");
                description.appendText(this.expectedText);
            }
        }

        @Override
        public boolean matchesSafely(TextView textView) {
            if (null == this.expectedText) {
                try {
                    this.expectedText = textView.getResources().getString(
                            resourceId);
                    this.resourceName = textView.getResources()
                            .getResourceEntryName(resourceId);
                } catch (Resources.NotFoundException ignored) {
                    /*
                     * view could be from a context unaware of the resource
                     * id.
                     */
                }
            }
            if (null != this.expectedText) {
                return this.expectedText.equals(textView.getText()
                        .toString());
            } else {
                return false;
            }
        }
    };
}