PreferenceScreen中的文本大小

Question

我有xml文件,定义了一些偏好屏幕,如下例所示

<PreferenceScreen  xmlns:android="http://schemas.android.com/apk/res/android"          
   android:key="root_preferencescreen">

    <PreferenceScreen  android:key="general_sett" android:title="general settings" />
     ....

    <PreferenceScreen  android:key="extras_sett" android:title="extras settings" />

</PreferenceScreen> 

我希望能够增加首选项屏幕文本的字体大小,但因为在首选项屏幕中没有android:textsize标签,我不知道如何实现这一点!

Answer 1

您只需android:textSize在主题中添加首选项屏幕即可:

例如:

<style name="settingsTheme" parent="PreferenceThemeOverlay">
    <item name="colorAccent">@color/color_ten</item>
    <item name="android:background">@color/colorPrimaryLight</item>
    <item name="android:windowAnimationStyle">@style/WindowAnimationTransition</item>
    <item name="android:textColorPrimary">@color/colorTextBodyLight</item>
    <item name="android:textColorSecondary">@color/colorTextCaptionLight</item>
    <item name="android:textSize">14sp</item>
</style>

你的SettingsActivity班级:

public class SettingsActivity extends AppCompatActivity {
private Toolbar toolbar;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_settings);

    toolbar = (Toolbar)findViewById(R.id.toolbar_settings);
    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    getSupportFragmentManager().beginTransaction()
            .replace(R.id.bodylayout, new PrefsFragment())
            .commit();


}

@Override
protected void onPause() {
    super.onPause();
}
}

PrefsFragment 课程:

public class PrefsFragment extends PreferenceFragmentCompat implements SharedPreferences.OnSharedPreferenceChangeListener {

    @Override
    public void onCreatePreferences(Bundle bundle, String s) {

    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        final Context myContext = this.getActivity();
    //set your theme
        myContext.setTheme(R.theme.settingsTheme);

        super.onCreate(savedInstanceState);
        addPreferencesFromResource(R.xml.settingspreference);
    //do other stuffs
        }
    //.....
        }

Answer 2

你可以制作一个TextView看起来像这样的布局xml:

<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    style="?android:attr/listSeparatorTextViewStyle"
    android:textColor="@android:color/white"
    android:id="@+android:id/title"
/>

并在此处设置您的偏好类别的布局preferences.xml:

<PreferenceCategory
    android:title="Category Title"
    android:layout="@layout/pref_category"
/>

只要TextView拥有id,@+android:id/title您就可以根据需要进行布局.还有一种方法可以用我尚未想到的样式来做到这一点.