如何在Android中动态设置样式为TextInputLayout? [英] How Can I set style to TextInputLayout by dynamically in android?

问题描述

我想通过动态创建TexInputLayout.我可以使用以下代码块创建TextInputLayout:

I want to create TexInputLayout by dynamically. I can create TextInputLayout using following code block :

TextInputLayout til = new TextInputLayout(this);
EditText et = new EditText(this);
til.addView(et);
et.setHint("Enter");
information.addView(til);

信息是我在项目中使用的线性布局的名称.

information is name of my linear layout which I use in the project.

但是我想更改通过动态创建的TextInputLaout的样式，我想使用@ style/Widget.MaterialComponents.TextInputLayout.OutlinedBox.

But I want to change style of the TextInputLaout which I created by dynamically, I want to use @style/Widget.MaterialComponents.TextInputLayout.OutlinedBox.

我尝试了以下代码块来更改样式:

I tried the following code block to change style :

TextInputLayout till= new TextInputLayout(new ContextThemeWrapper(this, 
 R.style.Widget_MaterialComponents_TextInputLayout_OutlinedBox));
 EditText et = new EditText(this);
 til.addView(et);
 et.setHint("Enter");
 information.addView(til);

，但是这些代码不起作用.如何为我动态创建的TextInputLayout添加样式?

but these code is not working. How can add style to TextInputLayout which I created dynamically ?

推荐答案

ContextThemeWrapper 的第二个参数是主题叠加层，而不是样式.

The 2nd parameter of the ContextThemeWrapper is a theme overlay, not a style.

您可以在 attrs.xml 中定义一个自定义属性:

You can define in attrs.xml a custom attribute:

<attr name="customTextInputStyle" format="reference" />

然后在您的应用主题中:

then in your app theme:

<style name="AppTheme" parent="Theme.MaterialComponents.*">
    <!-- ..... -->
    <item name="customTextInputStyle">@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox</item>
</style>

最后:

    TextInputLayout til = new TextInputLayout(this,null,R.attr.customTextInputStyle);
    til.setHint("Label");
    TextInputEditText et = new TextInputEditText(til.getContext());  //important: get the themed context from the TextInputLayout
    til.addView(et);
    buttonsLayout.addView(til);

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