Android 8.0 修改系统默认值

1. WiFi默认打开,display默认打开

------ frameworks/base/packages/SettingsProvider/res/values/defaults.xml ------
index fc1d095..2692125 100644
@@ -37,7 +37,7 @@
     <bool name="def_haptic_feedback">true</bool>
 
     <bool name="def_bluetooth_on">true</bool>
-    <bool name="def_wifi_display_on">false</bool>
+    <bool name="def_wifi_display_on">true</bool>
     <bool name="def_install_non_market_apps">false</bool>
     <bool name="def_package_verifier_enable">true</bool>
     <!-- Comma-separated list of location providers.
@@ -48,7 +48,7 @@
     <bool name="assisted_gps_enabled">true</bool>
     <bool name="def_netstats_enabled">true</bool>
     <bool name="def_usb_mass_storage_enabled">true</bool>
-    <bool name="def_wifi_on">false</bool>
+    <bool name="def_wifi_on">true</bool>
     <!-- 0 == never, 1 == only when plugged in, 2 == always -->
     <integer name="def_wifi_sleep_policy">2</integer>
     <bool name="def_wifi_wakeup_enabled">true</bool>

2. 默认灭屏时间

------ frameworks/base/packages/SettingsProvider/res/values/defaults.xml ------
index 2692125..abc67cb 100644
@@ -18,7 +18,7 @@
 -->
 <resources>
     <bool name="def_dim_screen">true</bool>
-    <integer name="def_screen_off_timeout">60000</integer>
+    <integer name="def_screen_off_timeout">1800000</integer>
     <integer name="def_sleep_timeout">-1</integer>
     <bool name="def_airplane_mode_on">false</bool>
     <bool name="def_theater_mode_on">false</bool>

3. 设置LCD 的默认密度

------------ device/qcom/common/rootdir/etc/init.qcom.early_boot.sh ------------
old mode 100644
new mode 100755
index 47dad37..3dc30aa
@@ -67,7 +67,9 @@ function set_density_by_fb() {
     if [ -z $fb_width ]; then
         setprop ro.sf.lcd_density 320
     else
-        if [ $fb_width -ge 1440 ]; then
+     if [ $fb_width -ge 1920 ]; then
+           setprop ro.sf.lcd_density 240    #for 1920x1080 hdmi-out 15.6 screen
+        elif [ $fb_width -ge 1440 ]; then
            setprop ro.sf.lcd_density 560
         elif [ $fb_width -ge 1080 ]; then
            setprop ro.sf.lcd_density 480