Chip组件报错：要求应用主题为Theme.MaterialComponents或其子类

问题场景 #

项目中尝试向ChipGroup动态添加Chip视图时，持续出现主题兼容错误，但应用主题已配置为MaterialComponents系列。

Activity相关代码 #

for (int i = 0; i < names.size(); i++) {
    Chip chip = new Chip(getApplicationContext());
    chip.setText(names.get(i));
    chip.setId(i);
    chipGroup.addView(chip);
}

报错信息 #

java.lang.IllegalArgumentException: The style on this component requires your app theme to be Theme.MaterialComponents (or a descendant).
        at com.google.android.material.internal.ThemeEnforcement.checkTheme(ThemeEnforcement.java:248)
        at com.google.android.material.internal.ThemeEnforcement.checkMaterialTheme(ThemeEnforcement.java:222)
        at com.google.android.material.internal.ThemeEnforcement.checkCompatibleTheme(ThemeEnforcement.java:150)
        at com.google.android.material.internal.ThemeEnforcement.obtainStyledAttributes(ThemeEnforcement.java:81)
        at com.google.android.material.chip.ChipDrawable.loadFromAttributes(ChipDrawable.java:334)
        at com.google.android.material.chip.ChipDrawable.createFromAttributes(ChipDrawable.java:276)
        at com.google.android.material.chip.Chip.<init>(Chip.java:193)
        at com.google.android.material.chip.Chip.<init>(Chip.java:186)
        at com.google.android.material.chip.Chip.<init>(Chip.java:182)

当前应用主题配置 #

<style name="AppTheme" parent="Theme.MaterialComponents.Light.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>

解决方案 #

错误根源是创建Chip时使用了getApplicationContext()——全局Application的主题并未继承MaterialComponents主题（即便Activity主题是）。只需替换为当前Activity的上下文即可修复：

for (int i = 0; i < names.size(); i++) {
    // 使用当前Activity上下文替代Application上下文
    Chip chip = new Chip(YourActivityName.this);
    chip.setText(names.get(i));
    chip.setId(i);
    chipGroup.addView(chip);
}

也可以通过显式指定Chip的Material风格来解决：

Chip chip = new Chip(getApplicationContext(), null, R.style.Widget_MaterialComponents_Chip_Entry);

内容的提问来源于stack exchange，提问作者abolfazl bazghandi