TextInputLayout Hint doesn't float up after updating Google Support Library

问题

I recently updated my support library to com.android.support:appcompat-v7:25.1.0 after which if I add a text to EditText via xml file the TextInputLayout hint doesn\'t float up.

I also had a look at this question but it didn\'t worked for me.

Here is my xml code:

<android.support.design.widget.TextInputLayout
        android:layout_width=\"wrap_content\"
        android:layout_height=\"wrap_content\"
        android:layout_marginTop=\"16dp\"
        app:layout_constraintTop_toTopOf=\"parent\"
        app:layout_constraintBottom_toBottomOf=\"parent\"
        android:layout_marginBottom=\"16dp\"
        android:layout_marginEnd=\"16dp\"
        app:layout_constraintRight_toRightOf=\"parent\"
        android:layout_marginRight=\"16dp\"
        app:layout_constraintVertical_bias=\"0.0\"
        android:id=\"@+id/til1\"
        android:layout_marginStart=\"16dp\"
        app:layout_constraintLeft_toLeftOf=\"parent\"
        android:layout_marginLeft=\"16dp\"
        app:layout_constraintHorizontal_bias=\"0.33\">

        <EditText
            android:layout_width=\"match_parent\"
            android:layout_height=\"wrap_content\"
            android:hint=\"From\"
            android:inputType=\"time\"
            android:text=\"09:00 AM\"
            android:id=\"@+id/from_mon\"
            android:textSize=\"14sp\" />
    </android.support.design.widget.TextInputLayout> 

Here is my gradle dependencies:

dependencies {
    compile fileTree(include: [\'*.jar\'], dir: \'libs\')
    androidTestCompile(\'com.android.support.test.espresso:espresso-core:2.2.2\', {
        exclude group: \'com.android.support\', module: \'support-annotations\'
    })
    compile \'com.android.support:appcompat-v7:25.1.0\'
    compile \'com.android.support.constraint:constraint-layout:1.0.0-beta4\'
    compile \'uk.co.chrisjenx:calligraphy:2.2.0\'
    compile \'com.android.support:design:25.1.0\'
    compile \'com.android.support:support-v4:25.1.0\'
    compile \'com.android.support:recyclerview-v7:25.1.0\'
    compile \'com.android.support:cardview-v7:25.1.0\'
    compile \'com.android.volley:volley:1.0.0\'
    compile \'com.github.bhargavms:DotLoader:1.0.1\'
    compile \'com.github.bumptech.glide:glide:3.7.0\'
    compile \'de.hdodenhof:circleimageview:2.1.0\'
    compile \'com.labo.kaji:fragmentanimations:0.1.1\'
    compile \'com.github.esafirm.android-image-picker:imagepicker:1.2.5\'
    testCompile \'junit:junit:4.12\'
}

This is the problem

You can clearly see that the hint is floating up.

Please guide.

回答1:

You must provide hint to the TextInputLayout and use TextInputEditText instead of EditText

<android.support.design.widget.TextInputLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="From">

    <android.support.v7.widget.TextInputEditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="09:00 AM" />
</android.support.design.widget.TextInputLayout>

回答2:

After updating to version 25.1.0 of the v7 appcompat library, I faced many serious bugs in Toolbar, RecyclerView, etc.

I went back to version 25.0.1.

回答3:

UPDATE: The issue was fixed in 25.3.1

It is a bug in 25.1.0 https://code.google.com/p/android/issues/detail?id=230171 It seems we have to use previous 25.0.1 version for now.

回答4:

@Rahul Sharma,

Why you are using android:hint="From" and android:text="09:00 AM" in EditText tag of xml file?

Instead of that you can use only android:hint="From in xml file and In Java code u can set text in dynamically.

I hope u will get my point. Thanks.

回答5:

This issue is fixed in Support Library Version 25.2.0. Please update to 25.2.0 This update includes other major fixes.

https://developer.android.com/topic/libraries/support-library/revisions.html#25-2-0

回答6:

Check your Do changes like this in you build.gradle for dependencies .. I think gradle is not a problem

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:24.1.1'
    compile 'com.android.support:design:24.1.1'

}

If not solve by changes of gradle change First check basic changes in you inpul layout .. it will defiantly do your text float.. after do your changes.

 <android.support.design.widget.TextInputLayout
                    android:id="@+id/til1"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:focusableInTouchMode="true"
                    android:layout_margin="10dp">


    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="From"
        android:inputType="time"
        android:text="09:00 AM"
        android:id="@+id/from_mon"
        android:textSize="14sp" />

                </android.support.design.widget.TextInputLayout>

NOTE: And if possible set your hint in to string file .. may that will also be the issue.

来源：https://stackoverflow.com/questions/41135968/textinputlayout-hint-doesnt-float-up-after-updating-google-support-library