blocks|key|187695|text|看起来我想通了。基本上，你需要创建你自己的匹配器：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|187696|public+static+Matcher<View>+withHint(final+String+expectedHint)+{
++++return+new+TypeSafeMatcher<View>()+{

++++++++@Override
++++++++public+boolean+matchesSafely(View+view)+{
++++++++++++if+(!(view+instanceof+EditText))+{
++++++++++++++++return+false;
++++++++++++}

++++++++++++String+hint+=+((EditText)+view).getHint().toString();

++++++++++++return+expectedHint.equals(hint);
++++++++}

++++++++@Override
++++++++public+void+describeTo(Description+description)+{
++++++++}
++++};
}|code-block|syntax|javascript|187697|然后你就可以使用它了：|187698|onView(withId(R.id.locationInput)).check(matches(withHint("Location+(Optional)")));|187699|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Looks like I figured it out. Basically, you need to create your own matcher:

<pre><code>public static Matcher&lt;View&gt; withHint(final String expectedHint) {
 return new TypeSafeMatcher&lt;View&gt;() {

 @Override
 public boolean matchesSafely(View view) {
 if (!(view instanceof EditText)) {
 return false;
 }

 String hint = ((EditText) view).getHint().toString();

 return expectedHint.equals(hint);
 }

 @Override
 public void describeTo(Description description) {
 }
 };
}
</code></pre>

Then you can use it:

<pre><code>onView(withId(R.id.locationInput)).check(matches(withHint("Location (Optional)")));
</code></pre>

blocks|key|4693638|text|有一种略微不同的方法。在我的例子中，在将字符串传递给matcher之前，您需要检查字符串是否不为空(如Espresso示例中所述)。同样，在下面的代码中，您不需要带有此提示的EditText的R.id。您只需检查是否显示带有"hintText“的提示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4693639|import+static+com.google.common.base.Preconditions.checkArgument;
import+static+com.google.common.base.Preconditions.checkNotNull;

public+final+class+Matchers+{

++++public+static+Matcher<View>+withItemHint(String+hintText)+{
++++++++//+use+preconditions+to+fail+fast+when+a+test+is+creating+an+invalid+matcher.
++++++++checkArgument(!(hintText.equals(null)));
++++++++return+withItemHint(is(hintText));
++++}

++++public+static+Matcher<View>+withItemHint(final+Matcher<String>+matcherText)+{
++++++++//+use+preconditions+to+fail+fast+when+a+test+is+creating+an+invalid+matcher.
++++++++checkNotNull(matcherText);
++++++++return+new+BoundedMatcher<View,+EditText>(EditText.class)+{++++++

++++++++++++@Override
++++++++++++public+void+describeTo(Description+description)+{
++++++++++++++++description.appendText("with+item+hint:+"+%2B+matcherText);
++++++++++++}

++++++++++++@Override
++++++++++++protected+boolean+matchesSafely(EditText+editTextField)+{
++++++++++++++++return+matcherText.matches(editTextField.getHint().toString());
++++++++++++}
++++++++};
++++}
}|code-block|syntax|javascript|4693640|用法：|4693641|import+static+com.google.android.apps.common.testing.ui.espresso.matcher.ViewMatchers.isDisplayed;
import+static+com.google.android.apps.common.testing.ui.espresso.assertion.ViewAssertions.matches;
import+static+com.google.android.apps.common.testing.ui.espresso.Espresso.onView;
import+static+com.your.package.withMatcher.withItemHint;
.
.
.
onView(withItemHint(someHintString)).check(matches(isDisplayed()));|4693642|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

There is a slightly different way to do it. In my case you check that the String is not null, before pass it to matcher (as explained in Espresso examples). And also in code below you don't need the R.id of the EditText with this hint. You just check if hint with "hintText" is displayed:

<pre><code>import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;

public final class Matchers {

 public static Matcher&lt;View&gt; withItemHint(String hintText) {
 // use preconditions to fail fast when a test is creating an invalid matcher.
 checkArgument(!(hintText.equals(null)));
 return withItemHint(is(hintText));
 }

 public static Matcher&lt;View&gt; withItemHint(final Matcher&lt;String&gt; matcherText) {
 // use preconditions to fail fast when a test is creating an invalid matcher.
 checkNotNull(matcherText);
 return new BoundedMatcher&lt;View, EditText&gt;(EditText.class) { 

 @Override
 public void describeTo(Description description) {
 description.appendText("with item hint: " + matcherText);
 }

 @Override
 protected boolean matchesSafely(EditText editTextField) {
 return matcherText.matches(editTextField.getHint().toString());
 }
 };
 }
}
</code></pre>

Usage:

<pre><code>import static com.google.android.apps.common.testing.ui.espresso.matcher.ViewMatchers.isDisplayed;
import static com.google.android.apps.common.testing.ui.espresso.assertion.ViewAssertions.matches;
import static com.google.android.apps.common.testing.ui.espresso.Espresso.onView;
import static com.your.package.withMatcher.withItemHint;
.
.
.
onView(withItemHint(someHintString)).check(matches(isDisplayed()));
</code></pre>

blocks|key|4693676|text|我已经创建了一个匹配器，它支持传递resourceId而不是字符串|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4693677|public+static+Matcher<View>+withHint(final+int+resourceId)+{
+++++return+new+BoundedMatcher<View,+TextView>(TextView.class)+{
+++++private+String+resourceName+=+null;
+++++private+String+expectedHint+=+null;

+++++@Override
+++++public+boolean+matchesSafely(TextView+editText)+{
++++++++if+(null+==+expectedHint)+{
++++++++++try+{
++++++++++++expectedHint+=+editText.getResources().getString(resourceId);
++++++++++++resourceName+=+editText.getResources().getResourceEntryName(resourceId);
++++++++++}+catch+(Resources.NotFoundException+ignored)+{
++++++++++++/*+view+could+be+from+a+context+unaware+of+the+resource+id.+*/
++++++++++}
++++++++}

++++++++if+(null+!=+expectedHint)+{
++++++++++return+expectedHint.equals(editText.getHint());
++++++++}+else+{
++++++++++return+false;
++++++++}
++++++}

++++++@Override
++++++public+void+describeTo(Description+description)+{
++++++++description.appendText("with+string+from+resource+id:+");
++++++++description.appendValue(resourceId);
++++++++if+(null+!=+resourceName)+{
++++++++++description.appendText("[");
++++++++++description.appendText(resourceName);
++++++++++description.appendText("]");
++++++++}
++++++++if+(null+!=+expectedHint)+{
++++++++++description.appendText("+value:+");
++++++++++description.appendText(expectedHint);
++++++++}
++++++}
++++};
++}|code-block|syntax|javascript|4693678|这是Valera+Zakharov+(withText(resourceId)指出的Espresso的withText匹配器的复制品。|offset|length|4693679|entityMap|0|LINK|mutability|MUTABLE|url|https://code.google.com/p/android-test-kit/source/browse/espresso/lib/src/main/java/com/google/android/apps/common/testing/ui/espresso/matcher/ViewMatchers.java?r=e57a8823a21e05c85a268603d6abe4114fd2dc7c#368^0|0|0|J|J|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

I've created a Matcher that supports passing a resourceId instead of a String

<pre><code>public static Matcher&lt;View&gt; withHint(final int resourceId) {
 return new BoundedMatcher&lt;View, TextView&gt;(TextView.class) {
 private String resourceName = null;
 private String expectedHint = null;

 @Override
 public boolean matchesSafely(TextView editText) {
 if (null == expectedHint) {
 try {
 expectedHint = editText.getResources().getString(resourceId);
 resourceName = editText.getResources().getResourceEntryName(resourceId);
 } catch (Resources.NotFoundException ignored) {
 /* view could be from a context unaware of the resource id. */
 }
 }

 if (null != expectedHint) {
 return expectedHint.equals(editText.getHint());
 } else {
 return false;
 }
 }

 @Override
 public void describeTo(Description description) {
 description.appendText("with string from resource id: ");
 description.appendValue(resourceId);
 if (null != resourceName) {
 description.appendText("[");
 description.appendText(resourceName);
 description.appendText("]");
 }
 if (null != expectedHint) {
 description.appendText(" value: ");
 description.appendText(expectedHint);
 }
 }
 };
 }
</code></pre>

It's a replication of Espresso's withText matcher pointed by Valera Zakharov (<a href="https://code.google.com/p/android-test-kit/source/browse/espresso/lib/src/main/java/com/google/android/apps/common/testing/ui/espresso/matcher/ViewMatchers.java?r=e57a8823a21e05c85a268603d6abe4114fd2dc7c#368" rel="nofollow">withText(resourceId</a>)

I'm starting to play with Espresso, got my basic tests running. Now trying to figure out how to check that my edit text has a specific hint text? Thanks.

<code>onView(withId(R.id.locationInput)).check(matches...?)</code>

Android Espresso - How to check EditText hint?

我开始尝试Espresso了，基本测试已经开始了。现在想知道如何检查我的编辑文本是否有特定的提示文本？谢谢。onView(withId(R.id.locationInput)).check(matches...?)

问Android Espresso -如何查看EditText提示？
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