Android普通应用升级为系统应用并获取系统权限的操作

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.google.example"
      android:sharedUserId="android.uid.system">

--- a/frameworks/base/packages/SystemUI/src/com/android/systemui/SystemUIApplication.java
    b/frameworks/base/packages/SystemUI/src/com/android/systemui/SystemUIApplication.java
@@ -16,24  16,51 @@
package com.android.systemui;
 import android.app.ActivityManager;
 import android.app.ActivityManager.RunningAppProcessInfo;
import android.app.Application;
import android.app.Instrumentation;
import android.content.BroadcastReceiver;
import android.content.Context;
 import android.content.ComponentName;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.res.Configuration;
 import android.database.ContentObserver;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Handler;
import android.os.Process;
import android.os.PowerManager;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.os.UserHandle;
import android.util.Log;
-
 import java.util.List;
 import java.util.Calendar;
import com.android.systemui.stackdivider.Divider;
import java.util.HashMap;
import java.util.Map;
 import java.util.Objects;
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileReader;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.text.SimpleDateFormat;
 import java.util.Date;
 import java.util.Locale;
 
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.InputStream;
 import java.io.PrintWriter;
 import java.math.BigInteger;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.Random;
/**
 * Application class for SystemUI.
@@ -42,6  69,8 @@ public class SystemUIApplication extends Application {
   private static final String TAG = "SystemUIService";
   private static final boolean DEBUG = false;
     
     private Context mContext;
   /**
   * The classes of the stuff to start.
@@ -86,6  115,8 @@ public class SystemUIApplication extends Application {
     // application theme in the manifest does only work for activities. Keep this in sync with
     // the theme set there.
     setTheme(R.style.systemui_theme);
         
         mContext = getApplicationContext();
     SystemUIFactory.createFromConfig(this);
@@ -143,6  174,7 @@ public class SystemUIApplication extends Application {
    private static final String SETTING_SYSTEM = "tchip.provider.setting.system";
    private static final String SETTING_SECURE = "tchip.provider.setting.secure";
    private static final String SETTING_GLOBAL = "tchip.provider.setting.global";
     private static final String BROADCAST_SCREENSHOT = "rk.android.screenshot.action";
    private String valueContent = "0";
    private MainReceiver mainReceiver;
    
@@ -150,6  182,10 @@ public class SystemUIApplication extends Application {
        android.util.Log.i("AZ", log);
    }
    
     private void LDLog(String log) {
         android.util.Log.i("LD", log);
     }
     
    public class MainReceiver extends BroadcastReceiver {
        @Override
@@ -225,6  261,18 @@ public class SystemUIApplication extends Application {
                intentDown.putExtra("android.intent.extra.KEY_CONFIRM", false);
                intentDown.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                context.startActivity(intentDown);
             } else if (BROADCAST_SCREENSHOT.equals(action)) {
                 Intent intentScreenShot = new Intent("android.intent.action.SCREENSHOT");
                 intentScreenShot.putExtra("path", intentScreenShot.getExtras().getString("path"));
                 intentScreenShot.putExtra("name", intentScreenShot.getExtras().getString("name"));
                 context.sendBroadcast(intentScreenShot);
             } else if (BROADCAST_TIMETICK.equals(action)) {
                 //checkLaidianAppAlive();
                 try{
                     mHandler.removeCallbacks(laidianAppR);
                 }catch(Exception e){
                 }
                 mHandler.postDelayed(laidianAppR, 1000);
            }
        }
    }
@@ -326,4  374,82 @@ public class SystemUIApplication extends Application {
   public SystemUI[] getServices() {
     return mServices;
   }
     
     
     Handler mHandler = new Handler();
     private int laidianAppCheckTime = 3000;
   Runnable laidianAppR = new Runnable(){
 
         @Override
         public void run() {
            checkAppAlive(pkgName", "clsName");
             mHandler.postDelayed(laidianAppR, laidianAppCheckTime);
         }
     
   };
 
     private void checkAppAlive(String pkgName, String clsName){
         long startTime = System.currentTimeMillis();
         if(!isAppAlive(pkgName)){
             LDLog("checkAppAlive.start to start app... ");
             try{
                 ComponentName componentName = new ComponentName(pkgName, clsName);
         Intent intent = new Intent();
         intent.setComponent(componentName);
         intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
         mContext.startActivity(intent);
             }catch(Exception e){
                 
             }
         }else{
             LDLog("checkAppAlive.app is running... ");
         }
         LDLog("checkAppAlive.used time : "   (System.currentTimeMillis() - startTime));
     }
     
     public boolean isAppAlive(String packageName){
         //boolean isAlive = false;
         //String command = "ps | grep "   packageName/*   " | busybox awk '{print $2}'"*/;
         //String[] result = ExecCmd.getPackagePID(command);
         //for(String str :result){
       // if(!"-1".equals(str)){
       //     isAlive = true;
       // }
         //}
         //return isAlive;
         
     // 获取正在运行的进程
     /*ActivityManager activityManager = (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE);
     List<RunningAppProcessInfo> appProcesses = activityManager.getRunningAppProcesses();
     
     for (RunningAppProcessInfo appProcess : appProcesses) {
       String[] pkgList = appProcess.pkgList;
       for (String pckName : pkgList) {
         if(packageName.equals(pckName)){
             return true;
         }
             
       }
     }*/
         ActivityManager am = (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE);
         List<ActivityManager.RecentTaskInfo> recentTasks = am.getRecentTasks(30, ActivityManager.RECENT_IGNORE_UNAVAILABLE
             | ActivityManager.RECENT_INCLUDE_PROFILES);
         
         for (ActivityManager.RecentTaskInfo recentInfo : recentTasks){
       //if (recentInfo.origActivity != null) {
                 String pckName = recentInfo.baseIntent.getComponent().getPackageName();
                 LDLog("isAppAlive.packageName="   pckName);
                 if(packageName.equals(pckName)){
                     return true;
                 }
             //}
         }
     return false;
     }
 
}