Android使用init.rc觸發指令碼實現隱藏內建應用程式

標籤：android   init.rc   shell   設定   開發人員選項   

【實現邏輯】通過在property_service.c中設定標誌位，在設定中實現介面改變標誌位，使用init.rc中聲明的服務來偵聽標誌位的變化，顯式啟動聲明的服務，執行對應的指令碼，把應用尾碼從apk重新命名為bak，從而實現隱藏（顯示邏輯相反）。
【實現步驟】以隱藏Google Play Store（system/priv-app/Phonesky.apk）為例：1.首先在system/core/init/property_service.c中聲明並初始化標誌位，0為隱藏，1為顯示，預設隱藏

     { "app.launcher.start", AID_SYSTEM, 0},+   { "app.phonesky.show", AID_SYSTEM, 0}, //Add By zj     { "cdma.",        AID_RADIO,    0 },    //Add by gfzhu VIA

2.在設定的開發人員選項中實現對應的介面：檔案路徑：packages/apps/Settings/src/com/android/settings/DevelopmentSettings.java①聲明和初始化：

private static final String SHOW_PHONESKY = "show_phonesky";private CheckBoxPreference mShowPhonesky;mShowPhonesky = findAndInitCheckboxPref(SHOW_PHONESKY);

②CheckBox的邏輯：

       (BatteryManager.BATTERY_PLUGGED_AC | BatteryManager.BATTERY_PLUGGED_USB) : 0);+      } else if (preference == mShowPhonesky) { // ZJ Add+           if(mShowPhonesky.isChecked())+           {+              SystemProperties.set("app.phonesky.show","1");+           }else{+              SystemProperties.set("app.phonesky.show","0");+           }         } else if (preference == mBtHciSnoopLog) {

③增加一個Preference：packages/apps/Settings/res/xml/development_prefs.xml

     android:targetClass="com.android.settings.SetFullBackupPassword" />     </PreferenceScreen>+       <CheckBoxPreference +        android:key="show_phonesky" +        android:title="@string/show_phonesky" +        />     <CheckBoxPreference 

④添加對應語言的string字元：

<string name="show_phonesky">Show Google Play Store</string>

⑤設定中新增一個監聽，初始化Checkbox的邏輯：packages/apps/Settings/src/com/android/settings/BootReceiver.java內容如下：

package com.android.settings;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.SharedPreferences;import android.os.SystemClock;import android.util.Log;import android.os.SystemProperties;public class BootReceiver extends BroadcastReceiver{     @Override     public void onReceive(Context arg0, Intent arg1) {          // TODO Auto-generated method stub                    String action = arg1.getAction();          if(action.equals(Intent.ACTION_BOOT_COMPLETED))          {              SharedPreferences shared = arg0.getSharedPreferences("com.android.settings_preferences", Context.MODE_PRIVATE);             boolean show_phonesky = shared.getBoolean("show_phonesky", false);             if(show_phonesky){                  SystemProperties.set("app.phonesky.show","1");                    }else{                    SystemProperties.set("app.phonesky.show","0");                    }          }     }}

⑥在Settings的AndroidManifest檔案中添加BroadcastReceiver的許可權和聲明：

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/><receiver android:name=".BootReceiver">            <intent-filter>                <action android:name="android.intent.action.BOOT_COMPLETED" />               <category android:name="android.intent.category.DEFAULT" />                    </intent-filter>      </receiver>

3.在init.rc中添加對應的服務和觸發條件：路徑：mediatek/config/esky27_tb_ccn_mlc_kk/init.rc

+# ZJ Add START+#Hide or Show Google Play Dynamicly+#disabled:服務不會自動運行，必須顯式地通過伺服器來啟動。+#oneshot:當此服務退出時不會自動重啟。+service hidePhonesky /system/bin/hidePhonesky+       disabled+       oneshot    +service showPhonesky /system/bin/showPhonesky+       disabled+       oneshot    +#on property:sys.boot_completed=1+#   start renamePhonesky+on property:app.phonesky.show=1+   start showPhonesky+on property:app.phonesky.show=0+   start hidePhonesky+# ZJ Add END

4.隱藏和顯示應用的指令碼：隱藏應用：vendor/ThirdParty/App/dte/hidePhonesky內容：

#!/system/bin/sh#!/system/bin/busyboxmount -o remount,rw /system;mv /system/priv-app/Phonesky.apk /system/priv-app/Phonesky.bak

顯示應用：vendor/ThirdParty/App/dte/showPhonesky
內容：

#!/system/bin/sh#!/system/bin/busyboxmount -o remount,rw /system;mv /system/priv-app/Phonesky.bak /system/priv-app/Phonesky.apk

5.拷貝指令碼到system/bin目錄下：參考以下格式添加到對應的mk檔案：

+#添加重新命名GooglePlay指令碼+PRODUCT_COPY_FILES += +       vendor/ThirdParty/App/dte/hidePhonesky:system/bin/hidePhonesky +       vendor/ThirdParty/App/dte/showPhonesky:system/bin/showPhonesky +       vendor/ThirdParty/App/dte/Phonesky.bak:system/priv-app/Phonesky.bak

Android使用init.rc觸發指令碼實現隱藏內建應用程式