Android：以编程方式添加 TextInputLayout

Question

我正在尝试以编程方式将带有 EditText 的 TextInputLayout 添加到 LinearLayout。我的做法：

TextInputLayout textInputLayout = new TextInputLayout(new ContextThemeWrapper(getContext(), R.style.Widget_MaterialComponents_TextInputLayout_OutlinedBox));
textInputLayout.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
textInputLayout.setHintTextAppearance(R.style.Base_Widget_MaterialComponents_TextInputLayout_TextInputLayout);

TextInputEditText editText = new TextInputEditText(getContext());
editText.setHint("test");

textInputLayout.addView(editText, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
linearLayout.addView(textInputLayout);

然而，结果看起来非常错误：

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奇怪的是，通过 XML 添加相同的 TextInputLayout 有效：

<com.google.android.material.textfield.TextInputLayout
    style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="kommentar"
    app:hintTextAppearance="@style/Base.Widget.MaterialComponents.TextInputLayout.TextInputLayout">

    <com.google.android.material.textfield.TextInputEditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
</com.google.android.material.textfield.TextInputLayout>

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现在，我需要补充一点，在升级到Material 1.1之前，编程方法是有效的。我只使用材料组件。我怎样才能解决这个问题？

Answer 1

使用 style 属性，您必须使用setBoxBackgroundMode()方法来使用OutlineBox样式。除此之外，您应该使用TextInputLayout'scontext来创建TextInputEditText. 检查以下：

textInputLayout.setBoxBackgroundColor(ContextCompat.getColor(getContext(), android.R.color.white));
textInputLayout.setBoxBackgroundMode(TextInputLayout.BOX_BACKGROUND_OUTLINE);

//Must use context of textInputLayout
TextInputEditText editText = new TextInputEditText(textInputLayout.getContext());

输出：