Android 系统(framework)定制、修改

Android 系统(framework)定制、修改 - 下篇

转 https://blog.csdn.net/gjy_it/article/details/106189571

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

<string name="def_location_providers_allowed" translatable="false">gps</string>

 修改成

<string name="def_location_providers_allowed" translatable="false">gps,network</string>

2：Android 5.1 关闭通知栏通能

修改点：frameworksasecorejavaandroidappNotificationManager.java

1.  
   /**
2.  
        * Post a notification to be shown in the status bar. If a notification with
3.  
        * the same id has already been posted by your application and has not yet been canceled, it
4.  
        * will be replaced by the updated information.
5.  
        *
6.  
        * @param id An identifier for this notification unique within your
7.  
        *        application.
8.  
        * @param notification A {@link Notification} object describing what to show the user. Must not
9.  
        *        be null.
10.  
         */
11.  
        public void notify(int id, Notification notification)
12.  
        {
13.  
        boolean close=false;
14.  
        if(close)
15.  
        {
16.  
              notify(null, id, notification);
17.  
        }
18.  
         }

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

1.  
   private int getScreenDimDurationLocked(int screenOffTimeout) {
2.  
   return Math.min(SCREEN_DIM_DURATION,
3.  
   (int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO));
4.  
   }

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：frameworksasepackagesSystemUIsrccomandroidsystemuistatusbarphonePhoneStatusBarView.java

1.  
   @Override
2.  
   public void addPanel(PanelView pv) {
3.  
   super.addPanel(pv);
4.  
   // if (pv.getId() == R.id.notification_panel) {
5.  
   // mNotificationPanel = pv;
6.  
   // } else if (pv.getId() == R.id.settings_panel){
7.  
   // mSettingsPanel = pv;
8.  
   // }
9.  
   pv.setRubberbandingEnabled(!mFullWidthNotifications);
10.  
    }

5 .android 修改MTP在PC端显示的制造商信息 

1.  
   1. 修改build/tools/buildinfo.sh中的 ro.product.manufacturer
2.  
   2.frameworksavmediamtpMtpServer.cpp 的doGetDeviceInfo()
3.  
   property_get("ro.product.manufacturer", prop_value, "unknown manufacturer");
4.  
   string.set(prop_value);
5.  
   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

1.  
   pm8909_chg: qcom,charger {
2.  
   ....
3.  
   qcom,ibatsafe-ma = <1000>; // 1000 1A
4.  
   qcom,thermal-mitigation = <1000 720 630 0>; //1000A
5.  
   //qcom,ibatsafe-ma = <1440>; // 1.5A
6.  
   //qcom,thermal-mitigation = <1440720 630 0>; //1.5A
7.  
   qcom,cool-bat-decidegc = <100>;
8.  
   qcom,warm-bat-decidegc = <450>;
9.  
   qcom,cool-bat-mv = <4100>;
10.  
    ....

或者直接修改

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

   

1.  
   return rc;
2.  
   }
3.  
    
4.  
   #define QPNP_LBC_IBATMAX_MIN 90
5.  
   #define QPNP_LBC_IBATMAX_MAX 1000 //最大充电电流限制
6.  
   /*
7.  
   * Set maximum current limit from charger
8.  
   * ibat = System current + charging current
9.  
   */
10.  
    static int qpnp_lbc_ibatmax_set(struct qpnp_lbc_chip *chip, int chg_current)
11.  
    {

6 .android 系统源码修改系统默认开机自动转屏

1.  
   diff --git a/frameworks/base/packages/SettingsProvider/res/values/defaults.xml b/frameworks/base/packages/SettingsProvider/res/values/defaults.xml
2.  
   index ff30452..c49b89e 100755
3.  
   --- a/frameworks/base/packages/SettingsProvider/res/values/defaults.xml
4.  
   +++ b/frameworks/base/packages/SettingsProvider/res/values/defaults.xml
5.  
   @@ -150,7 +150,7 @@
6.  
   <bool name="def_accessibility_display_magnification_auto_update">true</bool>
7.  
    
8.  
   <!-- Default for Settings.System.USER_ROTATION -->
9.  
   - <integer name="def_user_rotation">0</integer>
10.  
    + <integer name="def_user_rotation">-1</integer>
11.  
     
12.  
    <!-- Default for Settings.Secure.DOWNLOAD_MAX_BYTES_OVER_MOBILE. <=0 if no limit -->
13.  
    <integer name="def_download_manager_max_bytes_over_mobile">-1</integer>

7 .android 系统源码修改MEID  返回IMEI

1.  
   diff --git a/frameworks/opt/telephony/src/java/com/android/internal/telephony/cdma/CDMAPhone.java b/frameworks/opt/telephony/src/
2.  
   index b791460..3e764c3 100644
3.  
   --- a/frameworks/opt/telephony/src/java/com/android/internal/telephony/cdma/CDMAPhone.java
4.  
   +++ b/frameworks/opt/telephony/src/java/com/android/internal/telephony/cdma/CDMAPhone.java
5.  
   @@ -503,7 +503,7 @@ public class CDMAPhone extends PhoneBase {
6.  
    
7.  
   @Override
8.  
   public String getMeid() {
9.  
   - return mMeid;
10.  
    + return mImei;
11.  
    }
12.  
     
13.  
    //returns MEID or ESN in CDMA

6 .开机去掉没有插入SIM卡

1.  
   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
2.  
   index bf8bdf8..f622291 100755
3.  
   --- a/vendor/qcom/proprietary/qrdplus/Extension/apps/PhoneFeatures/src/com/qualcomm/qti/phonefeature/SimDetector.java
4.  
   +++ b/vendor/qcom/proprietary/qrdplus/Extension/apps/PhoneFeatures/src/com/qualcomm/qti/phonefeature/SimDetector.java
5.  
   @@ -331,7 +331,11 @@ public class SimDetector extends Handler implements OnClickListener, OnDismissLi
6.  
   mNoSIMDialog.getWindow().setType(
7.  
   WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG);
8.  
   mNoSIMDialog.setOnDismissListener(this);
9.  
   - mNoSIMDialog.show();
10.  
    +
11.  
    + // add by guojianyong - remove no simcar tip dialog
12.  
    + if(false){
13.  
    + mNoSIMDialog.show();
14.  
    + }
15.  
    }
16.  
     
17.  
    public void onClick(DialogInterface dialog, int which) {

7 .单双卡设置

1.  
   --- a/vendor/qcom/proprietary/qrdplus/Extension/config/default.prop
2.  
   +++ b/vendor/qcom/proprietary/qrdplus/Extension/config/default.prop
3.  
   @@ -11,8 +11,8 @@ persist.radio.restore_mode_pref=1
4.  
   # hide internal OOS for 5s when modem is camping
5.  
   persist.radio.ignore_dom_time=5
6.  
    
7.  
   -#set default multisim config to dsds
8.  
   -persist.radio.multisim.config=dsds
9.  
   +#set default multisim config to ssss
10.  
    +persist.radio.multisim.config=ssss
11.  
     
12.  
    # enable face beautification
13.  
    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

1.  
   diff --git a/frameworks/base/telephony/java/android/telephony/SignalStrength.java b/frameworks/base/telephony/java/android/telephony/SignalStrength.java
2.  
   old mode 100644
3.  
   new mode 100755
4.  
   index c20764a..ea7ed82
5.  
   --- a/frameworks/base/telephony/java/android/telephony/SignalStrength.java
6.  
   +++ b/frameworks/base/telephony/java/android/telephony/SignalStrength.java
7.  
   @@ -856,7 +856,10 @@ public class SignalStrength implements Parcelable {
8.  
   * associated with LTE RSRP and the bars associated with the LTE
9.  
   * RS_SNR
10.  
    */
11.  
    - return (rsrpIconLevel < snrIconLevel ? rsrpIconLevel : snrIconLevel);
12.  
    +
13.  
    + //xg change to fix the 4g signal strength not correct - 20190907
14.  
    + //return (rsrpIconLevel < snrIconLevel ? rsrpIconLevel : snrIconLevel);
15.  
    + return (rsrpIconLevel > snrIconLevel ? rsrpIconLevel : snrIconLevel);
16.  
    }
17.  
     
18.  
    if (snrIconLevel != -1) return snrIconLevel;