记录 设置-显示大小和字体

//显示大小 //默认两格?

frameworks/base/packages/SettingsProvider/res/values/defaults.xml

frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java

//字体大小 settings get system font_scale

//private void loadSystemSettings(SQLiteDatabase db) {

loadSetting(stmt, Settings.System.FONT_SCALE, 1.15f);

//字体大小 默认保留 三格等级

frameworks/base/packages/SettingsProvider/res/values/arrays.xml

frameworks/base/packages/SettingsLib/res/values/arrays.xml

<string-array name="entryvalues_font_size" translatable="false">

<item>0.85</item>

<item>1.0</item>

<item>1.15</item>

<!--<item>1.30</item>

<item>1.50</item>

<item>1.80</item>

<item>2.0</item>-->

</string-array>

//密度 显示大小

// getprop ro.sf.lcd_density

// settings get secure display_density_forced

<string name="def_display_density">248</string>

loadStringSetting(stmt, Settings.Secure.DISPLAY_DENSITY_FORCED, R.string.def_display_density);

//缩减显示大小等级

frameworks/base/packages/SettingsLib/res/values/dimens.xml

<fraction name="display_density_max_scale">120%</fraction>

}