Android 系统(framework)定制、修改 - 下篇

 定位上篇

              Android 5.1 - 7.1 系统(framework)定制、修改、移植、总结 - 上篇

1：Android系统将位置信息模式默认设置为高精确度

GPS位置信息模式默认为“仅限设备”， 应客户的需求，需要默认为“高精确度”

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

gps

 修改成

gps,network

 

2：Android 5.1 关闭通知栏通能

修改点：\frameworks\base\core\java\android\app\NotificationManager.java

/**
     * Post a notification to be shown in the status bar. If a notification with
     * the same id has already been posted by your application and has not yet been canceled, it
     * will be replaced by the updated information.
     *
     * @param id An identifier for this notification unique within your
     *        application.
     * @param notification A {@link Notification} object describing what to show the user. Must not
     *        be null.
     */
    public void notify(int id, Notification notification)
    {
        boolean close=false;
        if(close)
        {
              notify(null, id, notification);
        }
     }

 

3：Android frameworks去掉熄屏前先变暗的功能 

设置>显示：这里可以设置自动休眠超时时间。

当设置为30s时，到24s左右屏幕会先变暗，告知用户屏幕快熄灭了，6s以后才会真正熄屏。

现在需要去掉这个功能，在PowerManagerService里可以看到

private int getScreenDimDurationLocked(int screenOffTimeout) {
        return Math.min(SCREEN_DIM_DURATION,
                (int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO));
    }

30S是系统里最短的超时时间，也就是说其他screenOffTimeout乘以0.2是比6要大的，所以就不用考虑了。

要想去掉DIM这个Feature，直接把SCREEN_DIM_DURATION设为0，这样getScreenDimDurationLocked()的返回值也就是0，这样就不再有屏幕先变暗这个步骤了。

实测可行。

4.屏蔽掉下拉通知栏和状态栏 

修改点：frameworks\base\packages\SystemUI\src\com\android\systemui\statusbar\phone\PhoneStatusBarView.java

 @Override
    public void addPanel(PanelView pv) {
        super.addPanel(pv);
//        if (pv.getId() == R.id.notification_panel) {
//            mNotificationPanel = pv;
//        } else if (pv.getId() == R.id.settings_panel){
//            mSettingsPanel = pv;
//        }
        pv.setRubberbandingEnabled(!mFullWidthNotifications);
    }

 

5 .android 修改MTP在PC端显示的制造商信息 

1. 修改build/tools/buildinfo.sh中的 ro.product.manufacturer
2.frameworks\av\media\mtp\MtpServer.cpp 的doGetDeviceInfo()
property_get("ro.product.manufacturer", prop_value, "unknown manufacturer");
string.set(prop_value);
修改此处的prop_value

 

6:高通8909 驱动修改充电电流限制[kernel]

定位文件：kernel/arch/arm/boot/dts/qcom/msm-pm8909.dtsi

 pm8909_chg: qcom,charger {
                            ....
                        qcom,ibatsafe-ma = <1000>;  // 1000 1A
                        qcom,thermal-mitigation = <1000 720 630 0>;  //1000A
                        //qcom,ibatsafe-ma = <1440>;  // 1.5A
                        //qcom,thermal-mitigation = <1440720 630 0>;  //1.5A
                        qcom,cool-bat-decidegc = <100>;
                        qcom,warm-bat-decidegc = <450>;
                        qcom,cool-bat-mv = <4100>;
                             ....

或者直接修改

      kernel/drivers/power/qpnp-linear-charger.c     

   

       return rc;
}

#define QPNP_LBC_IBATMAX_MIN    90
#define QPNP_LBC_IBATMAX_MAX    1000  //最大充电电流限制
/*
 * Set maximum current limit from charger
 * ibat =  System current + charging current
 */
static int qpnp_lbc_ibatmax_set(struct qpnp_lbc_chip *chip, int chg_current)
{

 

6 .android 系统源码修改系统默认开机自动转屏

diff --git a/frameworks/base/packages/SettingsProvider/res/values/defaults.xml b/frameworks/base/packages/SettingsProvider/res/values/defaults.xml
index ff30452..c49b89e 100755
--- a/frameworks/base/packages/SettingsProvider/res/values/defaults.xml
+++ b/frameworks/base/packages/SettingsProvider/res/values/defaults.xml
@@ -150,7 +150,7 @@
     true
 
     
-    0
+    -1
 
     
     -1

 

7 .android 系统源码修改MEID  返回IMEI

diff --git a/frameworks/opt/telephony/src/java/com/android/internal/telephony/cdma/CDMAPhone.java b/frameworks/opt/telephony/src/
index b791460..3e764c3 100644
--- a/frameworks/opt/telephony/src/java/com/android/internal/telephony/cdma/CDMAPhone.java
+++ b/frameworks/opt/telephony/src/java/com/android/internal/telephony/cdma/CDMAPhone.java
@@ -503,7 +503,7 @@ public class CDMAPhone extends PhoneBase {
 
     @Override
     public String getMeid() {
-        return mMeid;
+        return  mImei;
     }
 
     //returns MEID or ESN in CDMA

 

6 .开机去掉没有插入SIM卡

diff --git a/vendor/qcom/proprietary/qrdplus/Extension/apps/PhoneFeatures/src/com/qualcomm/qti/phonefeature/SimDetector.java b/vendor/qcom/proprietary/qrdplus/Extension/apps/PhoneFeatures/src/com/qualcomm/qti/phonefeature/SimDetector.j
index bf8bdf8..f622291 100755
--- a/vendor/qcom/proprietary/qrdplus/Extension/apps/PhoneFeatures/src/com/qualcomm/qti/phonefeature/SimDetector.java
+++ b/vendor/qcom/proprietary/qrdplus/Extension/apps/PhoneFeatures/src/com/qualcomm/qti/phonefeature/SimDetector.java
@@ -331,7 +331,11 @@ public class SimDetector extends Handler implements OnClickListener, OnDismissLi
         mNoSIMDialog.getWindow().setType(
                 WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG);
         mNoSIMDialog.setOnDismissListener(this);
-        mNoSIMDialog.show();
+            
+        // add by guojianyong  - remove  no simcar tip dialog
+       if(false){
+          mNoSIMDialog.show();
+        }
     }
 
     public void onClick(DialogInterface dialog, int which) {

 

7 .单双卡设置

--- a/vendor/qcom/proprietary/qrdplus/Extension/config/default.prop
+++ b/vendor/qcom/proprietary/qrdplus/Extension/config/default.prop
@@ -11,8 +11,8 @@ persist.radio.restore_mode_pref=1
 # hide internal OOS for 5s when modem is camping
 persist.radio.ignore_dom_time=5
 
-#set default multisim config to dsds
-persist.radio.multisim.config=dsds
+#set default multisim config to ssss
+persist.radio.multisim.config=ssss
 
 # enable face beautification
 persist.ts.postmakeup=true

 

8. 根据不同的通道adb 命令播放声音

mm-audio-ftm高通的工厂测试命令

mm-audio-ftm -tc 8 -c /system/etc/ftm_test_config  -v 80 -file /system/etc/mmi/qualsound.wav

这条命令可以直接配通道

查看通道配置信息 /system/etc/ftm_test_config 

mm-audio-ftm -tc 8 -c /system/etc/ftm_test_config  -v 80 -file /system/etc/mmi/qualsound.wav
-tc 8 表示使用ftm_test_config的配置8

9. 修改状态栏信号强度不正确

diff --git a/frameworks/base/telephony/java/android/telephony/SignalStrength.java b/frameworks/base/telephony/java/android/telephony/SignalStrength.java
old mode 100644
new mode 100755
index c20764a..ea7ed82
--- a/frameworks/base/telephony/java/android/telephony/SignalStrength.java
+++ b/frameworks/base/telephony/java/android/telephony/SignalStrength.java
@@ -856,7 +856,10 @@ public class SignalStrength implements Parcelable {
              * associated with LTE RSRP and the bars associated with the LTE
              * RS_SNR
              */
-            return (rsrpIconLevel < snrIconLevel ? rsrpIconLevel : snrIconLevel);
+                        
+                        //xg change to fix the 4g signal strength not correct - 20190907
+            //return (rsrpIconLevel < snrIconLevel ? rsrpIconLevel : snrIconLevel);
+                       return (rsrpIconLevel > snrIconLevel ? rsrpIconLevel : snrIconLevel);
         }
 
         if (snrIconLevel != -1) return snrIconLevel;