Android TextInput 提示文字颜色

Question

我有这个TextInputLayout 和EditText，我的文字提示是黑色的，我想更改它。

顺便说一下，当提示在顶部时，它的颜色是白色

 <android.support.design.widget.TextInputLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                app:hintTextAppearance="@style/TextAppearance.App.TextInputLayout">

            <EditText
                android:id="@+id/password"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="@string/prompt_password"
                android:imeActionId="@+id/login"
                android:imeActionLabel="@string/action_sign_in_short"
                android:imeOptions="actionUnspecified"
                android:inputType="textPassword"
                android:maxLines="1"
                android:singleLine="true"
                android:textColor="@android:color/white"
                android:textColorHint="@android:color/white" />

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

样式

<style name="TextAppearance.App.TextInputLayout" parent="@android:style/TextAppearance">
    <item name="android:textColor">@android:color/white</item>
    <item name="android:textColorHint">@android:color/white</item>
    <item name="colorPrimary">@android:color/white</item>
    <item name="colorAccent">@android:color/white</item>
</style>

Answer 1

你需要把android:textColorHint="@color/yourColor"放在TextInputLayout里面，就像这样：

<android.support.design.widget.TextInputLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:hintTextAppearance="@style/TextAppearance.App.TextInputLayout"
    android:textColorHint="@color/yourColor">

或在您的应用程序主题中：

<style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
    <item name="android:textColorHint">@color/yourColor</item>
</style>

Answer 2

1. 使用它来更改提示颜色。

editText.setHintTextColor(getResources().getColor(R.color.white));

1. 只需将其添加到 EditText 的布局中即可：

android:textColorHint="#FFFFFF"

1. 如果你想要这样，那么你可以做到，

editText.addTextChangedListener(new TextWatcher() {

  public void onTextChanged(CharSequence arg0, int arg1, int arg2,int arg3){
    //do something
  }

  public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) 
  {
    //do something 
  }

  public void afterTextChanged(Editable arg0) {
    if(arg0.toString().length() <= 0)            
      tv.setHintTextColor(getResources().getColor(R.color.white));
  } 
});

Answer 3

你应该定义更多这样的属性：

<style name="TextAppearance.App.TextInputLayout" parent="TextAppearance.AppCompat">
   <item name="android:textColor">@android:color/white</item>
   <item name="android:textColorHint">@android:color/white</item>
   <item name="colorPrimary">@android:color/white</item>
   <item name="colorAccent">@android:color/white</item>

   <item name="colorControlNormal">@color/someColor</item>
   <item name="colorControlActivated">@color/someColor</item>
   <item name="colorControlHighlight">@color/someColor</item>

</style>