blocks|key|4567227|text|@andruboy对https://gist.github.com/chrisbanes/11247418的建议可能是你最好的选择。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4567228|https://github.com/thebnich/FloatingHintEditText类与EditText+-v7+v21.0.0一起工作，但由于v21.0.0不支持带有appcompat-v7的子类的强调色，因此FloatingHintEditText的下划线将是默认的纯黑或白色。此外，填充未针对材质样式EditText进行优化，因此您可能需要调整它。|style|CODE|4567229|entityMap|0|LINK|mutability|MUTABLE|url|https://gist.github.com/chrisbanes/11247418|1|https://github.com/thebnich/FloatingHintEditText^0|A|17|0|0|1E|8|34|K|4F|8|0|1C|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@$A|S|B|T|1|U]]|C|$]]|$1|D|3|E|5|6|7|V|8|@$A|W|B|X|F|G]|$A|Y|B|Z|F|G]|$A|10|B|11|F|G]]|9|@$A|12|B|13|1|14]]|C|$]]|$1|H|3|-4|5|6|7|15|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|Q]]]]

@andruboy's suggestion of <a href="https://gist.github.com/chrisbanes/11247418" rel="nofollow">https://gist.github.com/chrisbanes/11247418</a> is probably your best bet.

<a href="https://github.com/thebnich/FloatingHintEditText" rel="nofollow">https://github.com/thebnich/FloatingHintEditText</a> kind of works with appcompat-v7 v21.0.0, but since v21.0.0 does not support accent colors with subclasses of <code>EditText</code>, the underline of the <code>FloatingHintEditText</code> will be the default solid black or white. Also the padding is not optimized for the Material style <code>EditText</code>, so you may need to adjust it.

blocks|key|60994|text|不，我希望在未来的api版本中能做到这一点，但现在我们只能使用EditText。另一个选择是这个库：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|60995|https://github.com/marvinlabs/android-floatinglabel-widgets|offset|length|60996|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|1N|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

No it doesn't. I would expect this in a future api release, but for now we are stuck with EditText. Another option is this library: 
<a href="https://github.com/marvinlabs/android-floatinglabel-widgets" rel="nofollow">https://github.com/marvinlabs/android-floatinglabel-widgets</a>

blocks|key|61041|text|Android还没有提供原生方法。也不是AppCompat。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61042|试试这个库：https://github.com/rengwuxian/MaterialEditText|offset|length|61043|这可能就是你想要的。|61044|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/rengwuxian/MaterialEditText^0|0|6|1A|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@$D|R|E|S|1|T]]|A|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

Android hasn't provided a native method. Nor the AppCompat.

Try this library: <a href="https://github.com/rengwuxian/MaterialEditText">https://github.com/rengwuxian/MaterialEditText</a>

This might be what you want.

blocks|key|4567354|text|Android支持库可以在gradle中的依赖项中导入：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4567355|++++compile+'com.android.support:design:22.2.0'|code-block|syntax|javascript|4567356|它应该包含在GradlePlease中！作为一个使用它的例子：|4567357|+<android.support.design.widget.TextInputLayout
++++android:id="@%2Bid/to_text_input_layout"
++++android:layout_width="match_parent"
++++android:layout_height="wrap_content">

++++<AutoCompleteTextView
++++++++android:id="@%2Bid/autoCompleteTextViewTo"
++++++++android:layout_width="fill_parent"
++++++++android:layout_height="wrap_content"
++++++++android:hint="To"
++++++++android:layout_marginTop="45dp"
++++++++/>
</android.support.design.widget.TextInputLayout>|4567358|顺便说一句，编辑器可能不理解TextInputLayout中允许使用AutoCompleteTextView。|4567359|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

The Android support library can be imported within gradle in the dependencies :

<pre><code> compile 'com.android.support:design:22.2.0'
</code></pre>

It should be included within GradlePlease! And as an example to use it:

<pre><code> &lt;android.support.design.widget.TextInputLayout
 android:id="@+id/to_text_input_layout"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"&gt;

 &lt;AutoCompleteTextView
 android:id="@+id/autoCompleteTextViewTo"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:hint="To"
 android:layout_marginTop="45dp"
 /&gt;
&lt;/android.support.design.widget.TextInputLayout&gt;
</code></pre>

Btw, the editor may not understand that AutoCompleteTextView is allowed within TextInputLayout.

blocks|key|61109|text|浮动提示EditText：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61110|在gradle中添加以下依赖项：|61111|compile+'com.android.support:design:22.2.0'|code-block|syntax|javascript|61112|在布局中：|61113|<android.support.design.widget.TextInputLayout
++++android:id="@%2Bid/text_input_layout"
++++android:layout_width="match_parent"
++++android:layout_height="wrap_content">

++++++++<EditText
++++++++++++android:id="@%2Bid/editText"
++++++++++++android:layout_width="match_parent"
++++++++++++android:layout_height="wrap_content"
++++++++++++android:hint="UserName"/>
++++</android.support.design.widget.TextInputLayout>|61114|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Floating hint EditText:

Add below dependency in gradle:

<pre><code>compile 'com.android.support:design:22.2.0'
</code></pre>

In layout:

<pre><code>&lt;android.support.design.widget.TextInputLayout
 android:id="@+id/text_input_layout"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"&gt;

 &lt;EditText
 android:id="@+id/editText"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:hint="UserName"/&gt;
 &lt;/android.support.design.widget.TextInputLayout&gt;
</code></pre>

blocks|key|61137|text|导入支持库，在项目的build.gradle文件中，在项目的依赖项中添加以下行：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61138|dependencies+{
++++compile+fileTree(dir:+'libs',+include:+['*.jar'])

++++compile+'com.android.support:design:22.2.0'
++++compile+'com.android.support:appcompat-v7:22.2.0'
}|code-block|syntax|javascript|61139|在UI布局中使用以下TextInputLayout：|61140|<android.support.design.widget.TextInputLayout
++++android:id="@%2Bid/usernameWrapper"
++++android:layout_width="match_parent"
++++android:layout_height="wrap_content">

++++<EditText
++++++++android:id="@%2Bid/username"
++++++++android:layout_width="match_parent"
++++++++android:layout_height="wrap_content"
++++++++android:inputType="textEmailAddress"
++++++++android:hint="Username"/>

</android.support.design.widget.TextInputLayout>|61141|然后，在setContentView调用之后立即调用TextInputLayout上的setHint，因为要使浮动标签具有动画效果，您只需要使用setHint方法设置一个提示。|61142|final+TextInputLayout+usernameWrapper+=+(TextInputLayout)+findViewById(R.id.usernameWrapper);
usernameWrapper.setHint("Username");|61143|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Import the Support Libraries, In your project's build.gradle file, add the following lines in the project's dependencies:

<pre><code>dependencies {
 compile fileTree(dir: 'libs', include: ['*.jar'])

 compile 'com.android.support:design:22.2.0'
 compile 'com.android.support:appcompat-v7:22.2.0'
}
</code></pre>

Use following TextInputLayout in your UI Layout:

<pre><code>&lt;android.support.design.widget.TextInputLayout
 android:id="@+id/usernameWrapper"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"&gt;

 &lt;EditText
 android:id="@+id/username"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:inputType="textEmailAddress"
 android:hint="Username"/&gt;

&lt;/android.support.design.widget.TextInputLayout&gt;
</code></pre>

Than, call setHint on TextInputLayout just after setContentView call because, to animate the floating label, you just need to set a hint, using the setHint method.

<pre><code>final TextInputLayout usernameWrapper = (TextInputLayout) findViewById(R.id.usernameWrapper);
usernameWrapper.setHint("Username");
</code></pre>

blocks|key|4567431|text|为了更容易地使用InputTextLayout，我创建了这个库，它可以将您的XML代码减少到一半，还提供了设置错误消息和提示消息的能力，以及一种进行验证的简单方法。https://github.com/TeleClinic/SmartEditText|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4567432|只需添加|4567433|compile+'com.github.TeleClinic:SmartEditText:0.1.0'|code-block|syntax|javascript|4567434|然后你可以这样做：|4567435|<com.teleclinic.kabdo.smartmaterialedittext.CustomViews.SmartEditText
++++android:id="@%2Bid/emailSmartEditText"
++++android:layout_width="match_parent"
++++android:layout_height="wrap_content"
++++app:setLabel="Email"
++++app:setMandatoryErrorMsg="Mandatory+field"
++++app:setRegexErrorMsg="Wrong+email+format"
++++app:setRegexType="EMAIL_VALIDATION"+/>

<com.teleclinic.kabdo.smartmaterialedittext.CustomViews.SmartEditText
++++android:id="@%2Bid/passwordSmartEditText"
++++android:layout_width="match_parent"
++++android:layout_height="wrap_content"
++++app:setLabel="Password"
++++app:setMandatoryErrorMsg="Mandatory+field"
++++app:setPasswordField="true"
++++app:setRegexErrorMsg="Weak+password"
++++app:setRegexType="MEDIUM_PASSWORD_VALIDATION"+/>

<com.teleclinic.kabdo.smartmaterialedittext.CustomViews.SmartEditText
++++android:id="@%2Bid/ageSmartEditText"
++++android:layout_width="match_parent"
++++android:layout_height="wrap_content"
++++app:setLabel="Age"
++++app:setMandatory="false"
++++app:setRegexErrorMsg="Is+that+really+your+age+:D?"
++++app:setRegexString=".*\\d.*"+/>|4567436|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/TeleClinic/SmartEditText^0|2A|17|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|11|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|C|$]]|$1|M|3|N|5|H|7|13|8|@]|9|@]|C|$I|J]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]]]

For an easier way to use the InputTextLayout, I have created this library that cuts your XML code to less than the half, and also provides you with the ability to set an error message as well as a hint message and an easy way to do your validations.
<a href="https://github.com/TeleClinic/SmartEditText" rel="nofollow noreferrer">https://github.com/TeleClinic/SmartEditText</a>

Simply add 

<pre><code>compile 'com.github.TeleClinic:SmartEditText:0.1.0'
</code></pre>

Then you can do something like this:

<pre><code>&lt;com.teleclinic.kabdo.smartmaterialedittext.CustomViews.SmartEditText
 android:id="@+id/emailSmartEditText"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 app:setLabel="Email"
 app:setMandatoryErrorMsg="Mandatory field"
 app:setRegexErrorMsg="Wrong email format"
 app:setRegexType="EMAIL_VALIDATION" /&gt;

&lt;com.teleclinic.kabdo.smartmaterialedittext.CustomViews.SmartEditText
 android:id="@+id/passwordSmartEditText"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 app:setLabel="Password"
 app:setMandatoryErrorMsg="Mandatory field"
 app:setPasswordField="true"
 app:setRegexErrorMsg="Weak password"
 app:setRegexType="MEDIUM_PASSWORD_VALIDATION" /&gt;

&lt;com.teleclinic.kabdo.smartmaterialedittext.CustomViews.SmartEditText
 android:id="@+id/ageSmartEditText"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 app:setLabel="Age"
 app:setMandatory="false"
 app:setRegexErrorMsg="Is that really your age :D?"
 app:setRegexString=".*\\d.*" /&gt;
</code></pre>

blocks|key|61195|text|您需要将以下内容添加到模块build.gradle文件中：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61196|implementation+'com.google.android.material:material:1.0.0'|code-block|syntax|javascript|61197|并在您的XML中使用com.google.android.material.textfield.TextInputLayout：|61198|+++++++<com.google.android.material.textfield.TextInputLayout
++++++++++++android:id="@%2Bid/text_input_layout"
++++++++++++android:layout_width="match_parent"
++++++++++++android:layout_height="wrap_content"
++++++++++++android:hint="@string/my_hint">

++++++++<EditText
++++++++++++android:id="@%2Bid/editText"
++++++++++++android:layout_width="match_parent"
++++++++++++android:layout_height="wrap_content"
++++++++++++android:hint="UserName"/>
+++</com.google.android.material.textfield.TextInputLayout>|61199|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|$]]

You need to add the following to your module build.gradle file:
<pre><code>implementation 'com.google.android.material:material:1.0.0'
</code></pre>
And use com.google.android.material.textfield.TextInputLayout in your XML:
<pre><code> &lt;com.google.android.material.textfield.TextInputLayout
 android:id=&quot;@+id/text_input_layout&quot;
 android:layout_width=&quot;match_parent&quot;
 android:layout_height=&quot;wrap_content&quot;
 android:hint=&quot;@string/my_hint&quot;&gt;

 &lt;EditText
 android:id=&quot;@+id/editText&quot;
 android:layout_width=&quot;match_parent&quot;
 android:layout_height=&quot;wrap_content&quot;
 android:hint=&quot;UserName&quot;/&gt;
 &lt;/com.google.android.material.textfield.TextInputLayout&gt;
</code></pre>

Does API 21 provide a method to use the following feature:

<a href="http://www.google.com/design/spec/components/text-fields.html#text-fields-floating-labels">http://www.google.com/design/spec/components/text-fields.html#text-fields-floating-labels</a>

I'm trying to float the EditText hints.

Thanks!

Android EditText view Floating Hint in Material Design

Android

API 21是否提供了使用以下功能的方法：我在试着让EditText的提示浮现出来。谢谢!

问安卓EditText视图在材质设计中的浮动提示
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