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Android系统移植与调试之->怎么修改Android系统默认显示【开发者选项】并默认打开【USB调试】和【未知来源】开关

热度:74   发布时间:2016-04-27 22:12:26.0
Android系统移植与调试之------->如何修改Android系统默认显示【开发者选项】并默认打开【USB调试】和【未知来源】开关

              今天有个用户对【设置】有个特殊的要求,即:

1、开机的时候默认显示【开发者选项】并打开【USB调试】开关    (【Developer options】-->【USB debugging】)

2、开机的时候默认打开【安全】-->【未知来源】的开关    (【Security】--->【Unknown sources】)

 

 

1、首先解决【设置】界面默认显示【开发者选项】的问题

查看源代码:packages/apps/Settings/src/com/android/settings/SettingsActivity.java

在updateTilesList(List<DashboardCategory> target)方法中,可以找到【开发者选项】相关的代码:

else if (id == R.id.development_settings) {                	Log.d(LOG_TAG, "=================oyp K="+showDev);                    if (!showDev || um.hasUserRestriction(                            UserManager.DISALLOW_DEBUGGING_FEATURES)) {                        removeTile = true;                    }                } 


其中showDev变量定义在该方法最开始处

 final boolean showDev = mDevelopmentPreferences.getBoolean(                DevelopmentSettings.PREF_SHOW,                android.os.Build.TYPE.equals("eng"));


因此要想特定客户直接显示【开发者选项】,则将showDev的值改变即可,代码如下:

        //added by ouyang 2015-11-10  set DevelopmentSettings.PREF_SHOW=true if model is J5        if (android.os.SystemProperties.isJ5Version()) {        	SharedPreferences.Editor editor=mDevelopmentPreferences.edit();            editor.putBoolean(DevelopmentSettings.PREF_SHOW, true);            editor.commit();        	Log.d(LOG_TAG, "=================oyp set DevelopmentSettings.PREF_SHOW=true if model is J5 ");        }        //added by ouyang 2015-11-10 end        final boolean showDev = mDevelopmentPreferences.getBoolean(                DevelopmentSettings.PREF_SHOW,                android.os.Build.TYPE.equals("eng"));


即在初始化showDev变量之前,将DevelopmentSettings.PREF_SHOW的值设置为true,那么showDev也会是true。这样【开发者选项】就会默认打开。那个判断是J5客户的方法在/frameworks/base/core/java/android/os/SystemProperties.java中定义

	public static boolean isJ5Version(){		return SystemProperties.get("ro.product.model").contains("J5");	}

 

 

2、解决【开发者选项】-->【USB调试】开关 

首先查看packages/apps/Settings/src/com/android/settings/DevelopmentSettings.java

在updateAllOptions()方法中,有关于【USB调试】的逻辑处理。

  /// M: CR ALPS00244115. Lock and unlock screen, the "USB debugging" is unchecked.        boolean isChecked = (mAdbDialog != null && mAdbDialog.isShowing()) ? true :                    (Settings.Global.getInt(cr, Settings.Global.ADB_ENABLED, 0) != 0);        updateSwitchPreference(mEnableAdb, isChecked);        /// M: update usb preference again        mExt.customUSBPreference(mEnableAdb);

 

    void updateSwitchPreference(SwitchPreference switchPreference, boolean value) {        switchPreference.setChecked(value);        mHaveDebugSettings |= value;    }


其中mEnableAdb即【USB调试】开关控件。一开始我直接强制的把isChecked变量设置为true,如下代码所示

/// M: CR ALPS00244115. Lock and unlock screen, the "USB debugging" is unchecked.         boolean isChecked = (mAdbDialog != null && mAdbDialog.isShowing()) ? true :                     (Settings.Global.getInt(cr, Settings.Global.ADB_ENABLED, 0) != 0);-        //added by ouyang 2015-11-10  set mEnableAdb=true if model is J5-        if (android.os.SystemProperties.isJ5Version()) {-               isChecked=true;-        }-        //added by ouyang 2015-11-10 end         updateSwitchPreference(mEnableAdb, isChecked);         /// M: update usb preference again         mExt.customUSBPreference(mEnableAdb);

但是这样的话,直接刷机后开机的话还是不能直接连接USB调试,还要重新关闭该开关再打开该开关才能进行USB调试,因此该方案被放弃。

因为是否真正打开【USB调试】功能,是看Settings.Global.ADB_ENABLED这个属性的值是0还是1。因此真正的方法是在一个接受开机广播的广播接收者中将Settings.Global.ADB_ENABLED设置为1。

在下面和【未知来源】一起修改,在第4步骤中解决。

 

3、解决【安全】-->【未知来源】的开关 默认打开的问题

首先查看packages/apps/Settings/src/com/android/settings/SecuritySettings.java文件,在createPreferenceHierarchy()方法中找到【未知来源】的控件,403行附近

 mToggleAppInstallation = (SwitchPreference) findPreference(                KEY_TOGGLE_INSTALL_APPLICATIONS);  mToggleAppInstallation.setChecked(isNonMarketAppsAllowed());

其中isNonMarketAppsAllowed()方法代码如下

  private boolean isNonMarketAppsAllowed() {        return Settings.Global.getInt(getContentResolver(),                                      Settings.Global.INSTALL_NON_MARKET_APPS, 0) > 0;    }

setNonMarketAppsAllowed(boolean enabled)方法代码如下

   private void setNonMarketAppsAllowed(boolean enabled) {        final UserManager um = (UserManager) getActivity().getSystemService(Context.USER_SERVICE);        if (um.hasUserRestriction(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES)) {            return;        }        // Change the system setting        Settings.Global.putInt(getContentResolver(), Settings.Global.INSTALL_NON_MARKET_APPS,                                enabled ? 1 : 0);    }


一开始我在判断isNonMarketAppsAllowed()方法之前,先调用setNonMarketAppsAllowed()方法,这样一进入这个界面的话,【未知来源】选项是被勾选的。

mToggleAppInstallation = (SwitchPreference) findPreference(                 KEY_TOGGLE_INSTALL_APPLICATIONS);-        -        //added by ouyang 2015-11-10  setChecked(true) if the model is J5-        if (android.os.SystemProperties.isJ5Version()) {-               setNonMarketAppsAllowed(true);-        }         mToggleAppInstallation.setChecked(isNonMarketAppsAllowed());-        //added by ouyang 2015-11-10  end

但是,刷完机直接安装一个第三方的apk的话,还是会弹出窗口要我设置【未知来源】选项,如下所示,因此该方案被放弃。

点击【设置】按钮进入到界面是,【未知来源】按钮默认勾选了,这个时候退出去,继续安装apk的话就可以安装了,如下所示:

 



因为这个添加的代码是在SecuritySettings的createPreferenceHierarchy()方法中,也就是说要进入到该Activity才生效。这样明显没达到目的。

因此要和设置【USB调试】一样,在一个接收开机广播的广播接收者中将Settings.Global.INSTALL_NON_MARKET_APPS设置为1。

 

4、找Settings里面定义的一个接收开机广播的广播接收者,在AndroidManifest.xml中找到一个,当然你也可以自己定义一个这样的广播接收者。

       <!--  Restore Rotation Receiver -->        <receiver android:name="com.mediatek.settings.RestoreRotationReceiver">            <intent-filter>            	<action android:name="android.intent.action.BOOT_COMPLETED" />                         	<action android:name="android.intent.action.ACTION_BOOT_IPO" />                     </intent-filter>        </receiver>


因此在packages/apps/Settings/src/com/mediatek/settings/RestoreRotationReceiver.java的onReceive(Context context, Intent intent)方法中加入以下代码:

        //added by ouyang 2015-11-13         if (android.os.SystemProperties.isJ5Version()) {        	// 开机启动时,默认设置 [未知来源] 勾选            Settings.Global.putInt(context.getContentResolver(), Settings.Global.INSTALL_NON_MARKET_APPS,1);        	// 开机启动时,默认设置 [USB调试] 勾选            Settings.Global.putInt(context.getContentResolver(),Settings.Global.ADB_ENABLED, 1);        }        //added by ouyang 2015-11-13  end

 

而一开始添加的代码可以注释掉了。通过git diff可以看出来

diff --git a/packages/apps/Settings/src/com/android/settings/DevelopmentSettings.java b/packages/apps/Settings/src/com/android/settings/Develindex 0a987df..503270a 100755--- a/packages/apps/Settings/src/com/android/settings/DevelopmentSettings.java+++ b/packages/apps/Settings/src/com/android/settings/DevelopmentSettings.java@@ -508,15 +508,9 @@ public class DevelopmentSettings extends SettingsPreferenceFragment         final Context context = getActivity();         final ContentResolver cr = context.getContentResolver();         mHaveDebugSettings = false;-         /// M: CR ALPS00244115. Lock and unlock screen, the "USB debugging" is unchecked.         boolean isChecked = (mAdbDialog != null && mAdbDialog.isShowing()) ? true :                     (Settings.Global.getInt(cr, Settings.Global.ADB_ENABLED, 0) != 0);-        //added by ouyang 2015-11-10  set mEnableAdb=true if model is J5-        if (android.os.SystemProperties.isJ5Version()) {-               isChecked=true;-        }-        //added by ouyang 2015-11-10 end         updateSwitchPreference(mEnableAdb, isChecked);         /// M: update usb preference again         mExt.customUSBPreference(mEnableAdb);


 

diff --git a/packages/apps/Settings/src/com/android/settings/SecuritySettings.java b/packages/apps/Settings/src/com/android/settings/Securityindex 4de173a..392e6ee 100755--- a/packages/apps/Settings/src/com/android/settings/SecuritySettings.java+++ b/packages/apps/Settings/src/com/android/settings/SecuritySettings.java@@ -402,14 +402,7 @@ public class SecuritySettings extends SettingsPreferenceFragment                 root.findPreference(KEY_DEVICE_ADMIN_CATEGORY);         mToggleAppInstallation = (SwitchPreference) findPreference(                 KEY_TOGGLE_INSTALL_APPLICATIONS);-        -        //added by ouyang 2015-11-10  setChecked(true) if the model is J5-        if (android.os.SystemProperties.isJ5Version()) {-               setNonMarketAppsAllowed(true);-        }         mToggleAppInstallation.setChecked(isNonMarketAppsAllowed());-        //added by ouyang 2015-11-10  end-                 // Side loading of apps.         // Disable for restricted profiles. For others, check if policy disallows it.         mToggleAppInstallation.setEnabled(!um.getUserInfo(UserHandle.myUserId()).isRestricted());


 


这样改为后,编译,刷机后,插上USB数据线就可以开始进行adb调试了,而且可以直接安装未知来源的apk了。

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  作者:欧阳鹏  欢迎转载,与人分享是进步的源泉!

  转载请保留原文地址:http://blog.csdn.net/ouyang_peng

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版权声明:本文为欧阳鹏原创文章,欢迎转载,转载请注明出处! http://blog.csdn.net/ouyang_peng

2楼sinat_32786543昨天 20:48
菜鸟回帖--------------------------------
1楼yf0994昨天 17:12
这些都可以在SettingProvider中修改,只是修改一下配置,不用修改代码
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