这有可能改变android中提示的一部分颜色吗？(Is this possible to change a portion of hint's color in android?)

我在TextInputLayout内部有一个AppCompatEditText并从字符串资源中设置一个提示。

<string name="company_name">Companyname *</string>

星的颜色不会变成红色。

这就是我得到的。

我想要的（在photoshop中编辑）

我尝试使用带有图像的drawableEnd，但AppCompatEditText的宽度为“match_parent”。所以它最后显示出来。我不是这样的。有没有办法做到这一点。

更新：

试过这个：

company_name.setHint(Html.fromHtml("" + "Text Hint Here" + "*"));

这就是我得到的。旧的提示不会被新的提示所取代。两个提示都显示出来。

I have an AppCompatEditText Inside TextInputLayout and set a hint from string resource.

<string name="company_name">Companyname *</string>

The color of the star is not changing to red.

This is what What I got.

What I want (edited in photoshop)

I tried drawableEnd with an image, but the AppCompatEditText has the width as "match_parent". So its displayed at the end. I don't what that way. Is there any way to do it.

UPDATE :

Tried this:

company_name.setHint(Html.fromHtml("" + "Text Hint Here" + "*"));

This is what I got. The old hint is not replaced by new one. Both hints are showing.

最满意答案

在某种程度上......

这是我的发现

TextInputEditText Floating文本上的Html/Spannable无法正常工作。

txt_usemail.setHint(Html.fromHtml("" + "Companyname" + "" + "" + "*" + ""));

TextInputLayout上的Html/Spannable提示不起作用。

txt_usemail.setHint(Html.fromHtml("" + "Companyname" + "" + "" + "*" + ""));

TextInputEditText上的Html/Spannable正在运行。

et_usemaill.setHint(Html.fromHtml("" + "Companyname" + "" + "" + "*" + ""));

现在，问题在于如果你在TextInputEditText上设置了setHint() （如第3点），那么Floating文本就不起作用了。

在此处输入图像描述

要使用Floating文本，我们需要在TextInputLayout上设置setHint()

这是使用EditText焦点/散焦的技巧

final TextInputLayout txt_usemail = findViewById(R.id.txt_usemail); final TextInputEditText et_usemaill = findViewById(R.id.et_usemaill); et_usemaill.setHint(Html.fromHtml("" + "Companyname" + "" + "" + "*" + "")); et_usemaill.setOnFocusChangeListener(new View.OnFocusChangeListener() { @Override public void onFocusChange(View view, boolean hasFocus) { if (et_usemaill.getText().toString().equals("")) { if (hasFocus) { et_usemaill.setHint(null); txt_usemail.setHint(Html.fromHtml("" + "Companyname" + "" + "" + "*" + "")); } else { // Remove Glitch/Smooth Animation new Handler().postDelayed(new Runnable() { @Override public void run() { txt_usemail.setHint(null); et_usemaill.setHint(Html.fromHtml("" + "Companyname" + "" + "" + "*" + "")); } }, 200); } } } });

样式

布局

<android.support.design.widget.TextInputLayout android:layout_marginTop="56dp" android:id="@+id/txt_usemail" android:layout_width="match_parent" android:layout_height="wrap_content" app:hintTextAppearance="@style/TextAppearence.App.TextInputLayout" android:textColorHint="@android:color/holo_red_dark" > <android.support.design.widget.TextInputEditText android:id="@+id/et_usemaill" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginTop="10dp" android:inputType="textEmailAddress" android:textColor="@color/white" /> </android.support.design.widget.TextInputLayout>

结果 -

在此处输入图像描述

To some extent possible ...

here are my findings

Html/Spannable on Floating text of TextInputEditText is not working.

txt_usemail.setHint(Html.fromHtml("" + "Companyname" + "" + "" + "*" + ""));

Html/Spannable on TextInputLayout hint is not working.

txt_usemail.setHint(Html.fromHtml("" + "Companyname" + "" + "" + "*" + ""));

Html/Spannable on TextInputEditText is working.

et_usemaill.setHint(Html.fromHtml("" + "Companyname" + "" + "" + "*" + ""));

Now, problem here is if you setHint() on TextInputEditText(like point 3) then Floating text won't work.

enter image description here

to use Floating text, we need to setHint() on TextInputLayout

Here is the trick using EditText focus/defocus

final TextInputLayout txt_usemail = findViewById(R.id.txt_usemail); final TextInputEditText et_usemaill = findViewById(R.id.et_usemaill); et_usemaill.setHint(Html.fromHtml("" + "Companyname" + "" + "" + "*" + "")); et_usemaill.setOnFocusChangeListener(new View.OnFocusChangeListener() { @Override public void onFocusChange(View view, boolean hasFocus) { if (et_usemaill.getText().toString().equals("")) { if (hasFocus) { et_usemaill.setHint(null); txt_usemail.setHint(Html.fromHtml("" + "Companyname" + "" + "" + "*" + "")); } else { // Remove Glitch/Smooth Animation new Handler().postDelayed(new Runnable() { @Override public void run() { txt_usemail.setHint(null); et_usemaill.setHint(Html.fromHtml("" + "Companyname" + "" + "" + "*" + "")); } }, 200); } } } });

style

layout

<android.support.design.widget.TextInputLayout android:layout_marginTop="56dp" android:id="@+id/txt_usemail" android:layout_width="match_parent" android:layout_height="wrap_content" app:hintTextAppearance="@style/TextAppearence.App.TextInputLayout" android:textColorHint="@android:color/holo_red_dark" > <android.support.design.widget.TextInputEditText android:id="@+id/et_usemaill" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginTop="10dp" android:inputType="textEmailAddress" android:textColor="@color/white" /> </android.support.design.widget.TextInputLayout>

Result -

enter image description here

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