聚焦后更改 TextInputLayout 提示文本

Question

在片段中，我想在用户触摸 TextInputEditText 后更改 TextInputLayout 提示文本。在它动画到浮动提示之前。

我可以更改提示没问题，但我希望用户先触摸它，然后再更改它。

我该怎么做？

谢谢

Answer 1

您可以使用 OnFocusChangedListener 并检索用户获得 EditText 焦点的事件。

myEditText.setOnFocusChangeListener(new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View view, boolean hasFocus) {
                if (hasFocus) {
                     // do what you have to do
                }

            }
        });

Answer 2

试试这个方法..

     editText.setOnFocusChangeListener(new View.OnFocusChangeListener() {
        @Override
        public void onFocusChange(View view, boolean b) {
            editText.setHint("Please Enter Name"); // here set new hint
        }
    });

Answer 3

更改提示文本颜色使用View.OnFocusChangeListener 设置hintTextAppearance。试试下面的配置。

 <style name="inactive" parent="Theme.AppCompat.Light">
    <item name="android:textColorPrimary">@android:color/darker_gray</item>
    <item name="android:textColor">@android:color/darker_gray</item>
</style>

<style name="active" parent="Theme.AppCompat.Light">
    <item name="android:textColorPrimary">@android:color/black</item>
    <item name="android:textColor">@android:color/black</item>
</style>

XMl

<android.support.design.widget.TextInputLayout
    android:id="@+id/tet"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_below="@+id/et"
    app:hintTextAppearance="@style/inactive"
    android:layout_margin="@dimen/activity_horizontal_margin"
    app:hintEnabled="true">
    <android.support.design.widget.TextInputEditText
        android:id="@+id/edit"
        android:layout_width="match_parent"
        android:textColor="@color/colorPrimary"
        android:layout_height="wrap_content"
        android:hint="Floating Hint" />

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

更改焦点时更改样式。

final TextInputLayout inputLayout=findViewById(R.id.tet);
    final TextInputEditText edit=findViewById(R.id.edit);
    edit.setOnFocusChangeListener(new View.OnFocusChangeListener() {
        @Override
        public void onFocusChange(View v, boolean hasFocus) {
            if(hasFocus)
                inputLayout.setHintTextAppearance(R.style.active);
            else
                inputLayout.setHintTextAppearance(R.style.inactive);
        }
    });

编辑:- 要仅更改提示文本，您可以在焦点更改时更改它。

edit.setOnFocusChangeListener(new View.OnFocusChangeListener() {
        @Override
        public void onFocusChange(View v, boolean hasFocus) {
            if(hasFocus)
                edit.setHint("Enter name");
            else
                edit.setHint("Name");
        }
    });

聚焦后更改 TextInputLayout 提示文本

Change TextInputLayout hint text after focused

android

android-fragments

android-textinputlayout