TextInputLayout has no effect for giving hint programmatically in EditText

问题

I have an EditText and it's parent is TextInputLayout. I am trying to give hint programmatically for EditText, (not in layout) in this case Text input hint animation is not working, it's working like simple EditText. can some one suggest how to handle it.

below is my layout.

<android.support.design.widget.TextInputLayout
    android:id="@+id/text_input_layout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <EditText
        android:id="@+id/post_EditTextPostAnAd"
        style="@style/abc_EditView" />

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

回答1:

You have to set hint to TextInputLayout Here is the code.

TextInputLayout textInputLayout = (TextInputLayout)findViewById(R.id.text_input_layout);
textInputLayout.setHint("Hello");

Updated

In Kotlin:

val textInputLayout = findViewById(R.id.text_input_layout)
textInputLayout.hint = "Hello"

来源：https://stackoverflow.com/questions/34198599/textinputlayout-has-no-effect-for-giving-hint-programmatically-in-edittext