使用适用于Android的主题更改应用程序宽字体大小

是否有可能在Android应用程序上使每一位文本都变大,模仿在全局设置屏幕中更改默认字体大小时会发生什么？我希望用户在设置屏幕中选择一种字体大小,并更改所有文本,而无需在我的各个屏幕上放置额外的样式标签.

到目前为止,我有三个主题可以正确更改TextView的字体大小,但不能正确更改诸如EditText或ListView元素的字体大小

<style name="AppThemeSmall" parent="AppTheme">
    <item name="android:textViewStyle">@android:style/TextAppearance.Small</item>
    <item name="android:textAppearance">@android:style/TextAppearance.Small</item>
</style>

<style name="AppThemeMedium" parent="AppTheme">
    <item name="android:textViewStyle">@android:style/TextAppearance.Medium</item>
    <item name="android:textAppearance">@android:style/TextAppearance.Medium</item>
</style>

<style name="AppThemeLarge" parent="AppTheme">
    <item name="android:textViewStyle">@android:style/TextAppearance.Large</item>
    <item name="android:textAppearance">@android:style/TextAppearance.Large</item>
</style>

解决方法:

我最终在xml中添加了样式,那样感觉更干净了,我有了更多的控制权.

每个布局xml(包括EditText,AutoCompleteTextView)

 <TextView
   style="?textTitle"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="@string/ref" />

attrs.xml

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

styles.xml(请注意,我也覆盖了微调器样式以保持大小一致

<style name="AppTheme.Small">
    <item name="textTitle">@style/small_title_text</item>
    <item name="android:spinnerItemStyle">@style/spinner_small</item>
</style>

<style name="AppTheme.Medium">
    <item name="textTitle">@style/medium_title_text</item>
    <item name="android:spinnerItemStyle">@style/spinner_medium</item>
</style>

<style name="AppTheme.Large">
    <item name="textTitle">@style/large_title_text</item>
    <item name="android:spinnerItemStyle">@style/spinner_large</item>
</style>


<!-- SMALL FONT SIZE -->
<style name="small_title_text">
    <item name="android:textSize">15sp</item>
    <item name="android:textStyle">bold</item>
</style>


<!-- MEDIUM FONT SIZE -->
<style name="medium_title_text">
    <item name="android:textSize">19sp</item>
    <item name="android:textStyle">bold</item>
</style>

<style name="medium_list_text"></style>

<!-- LARGE FONT SIZE -->
<style name="large_title_text">
    <item name="android:textSize">23sp</item>
    <item name="android:textStyle">bold</item>
</style>

<style name="large_list_text"></style>

<!-- SPINNER STYLES -->
<style name="spinner_small">
    <item name="android:textSize">17sp</item>
    <item name="android:paddingTop">0dip</item>
</style>

<style name="spinner_medium">
    <item name="android:textSize">21sp</item>
    <item name="android:paddingTop">0dip</item>
</style>

<style name="spinner_large">
    <item name="android:textSize">25sp</item>
    <item name="android:paddingTop">0dip</item>
</style>

然后我在创建每个活动之前设置主题.

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    PreferenceHelper mPrefs = PreferenceHelper.getInstance(this);
    setTheme(mPrefs.getTheme());
    setContentView(R.layout.activity_list);