手机安全卫士——病毒查杀

public class AntivirusActivity extends Activity {    
    TextView tv_init_virus;
    ProgressBar pb;
    Message msg;
    ImageView iv_scanning;
    LinearLayout ll_content;
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        initUI();
        initData();
        
    }
    
    static class ScanInfo{
        boolean desc;
        String appname;
        String packagename;
    }
    
    
     Handler  handler = new Handler(){
         public void handleMessage(android.os.Message msg) {
             switch(msg.what){
             case 1:
                 tv_init_virus.setText("初始化八核杀毒引擎");
                 break;
             case 2:
                 //病毒扫描中
                 TextView child = new TextView(AntivirusActivity.this);
                 ScanInfo scaninfo = (ScanInfo) msg.obj;
                 if(scaninfo.desc){//true表示有病毒
                     child.setTextColor(Color.RED);
                     child.setText(scaninfo.appname+"有病毒");
                     
                 }else{
                     child.setTextColor(Color.BLACK);
                     child.setText(scaninfo.appname+"扫描安全");
                     
                 }               
                 ll_content.addView(child);
                 break;
             case 3:
                 //当扫描结束的时候，停止动画。
                 iv_scanning.clearAnimation();               
                 break;          
             }
             
             
         };
    };
    
    public void initData(){
        
        
        new Thread(){
            
            public void run(){
//                //获取手机里面所有的应用程序
//                List<AppInfo> appinfos = AppInfos.getAppInfos(AntivirusActivity.this);
//                //迭代手机上边所有的软件
//                for(AppInfo appinfo:appinfos){
//                    String name = appinfo.getApkname();
//                }
                
                msg = Message.obtain();
                msg.what = 1;//初始化病毒                                              
                PackageManager packageManager = getPackageManager();
                List<PackageInfo> installPackages = packageManager.getInstalledPackages(0);
                
                int size = installPackages.size();
                pb.setMax(size);
                int progress = 0 ;
                
                for(PackageInfo packageinfo:installPackages){
                    //获取当前手机上app的名字
                    String appname = packageinfo.applicationInfo.loadLabel(packageManager).toString();
                    //首先需要获取到每个应用程序的位置
                    String sourceDir = packageinfo.applicationInfo.sourceDir;
                    ScanInfo scaninfo = new ScanInfo();
                    
                    scaninfo.appname = appname;
                    scaninfo.packagename = packageinfo.applicationInfo.packageName;
                    
                    //MD5是病毒特征码，得到应用程序的MD5值
                    
                        String md5 = null;
                        try {
                            md5 = MD5Utils.getFileMd5(sourceDir);
                        } catch (Exception e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        }
                        String desc = AntivirusDao.checkFileVirus(md5);
                        if(desc == null){
                            scaninfo.desc = false;
                            
                        }else{
                            //这里有病毒
                            scaninfo.desc = true;
                        }
                        progress++;
                        pb.setProgress(progress);
                        msg = Message.obtain();
                        msg.what = 2;//正在浏览
                        msg.obj = scaninfo;
                        handler.sendMessage(msg);                                       
                    //判断当前的文件是否在病毒数据库中？                                
                }
                msg = Message.obtain();
                msg.what = 3;//结束                
                handler.sendMessage(msg);
                
            }
        }.start();
        
        
        
        
    }

    
    public void initUI(){
        setContentView(R.layout.activity_antivirus);
        iv_scanning = (ImageView) findViewById(R.id.iv_scanning);
        ll_content = (LinearLayout) findViewById(R.id.ll_content);
        tv_init_virus = (TextView) findViewById(R.id.tv_init_virus);
        pb =  (ProgressBar) findViewById(R.id.progressBar1);
        /**
         * fromDegrees 開始的角度
         * toDegrees 結束的角度
         * pivotXType 參照自己
         * pivotXValue 
         * pivotYType 
         * pivotYValue 
         * 初始化旋转动画
         */
        
        RotateAnimation rotationmation = new RotateAnimation(0,360,Animation.RELATIVE_TO_SELF,0.5f,
                Animation.RELATIVE_TO_SELF,0.5f);
        rotationmation.setDuration(5000);
        //rotationmation.setRepeatMode(-1);
        rotationmation.setRepeatCount(-1);
        iv_scanning.startAnimation(rotationmation);
    }
}

   这个是病毒数据库，在闪屏页将assets目录下的数据库拷贝到data/data/ .../files 目录下
   我们需要用的是antivirus.db里面的datable表

AntivirusDao.java

public class AntivirusDao {
    //检查当前MD5是否在数据库中
    public static String checkFileVirus(String md5){
        String desc = null;
        SQLiteDatabase db = SQLiteDatabase.openDatabase("data/data/com.mxn.mobilesafe/files/antivirus.db", null, 
                                          SQLiteDatabase.OPEN_READONLY);
        //查询
        Cursor cursor = db.rawQuery("select desc from datable where md5 = ?", new String[]{md5});
        if(cursor.moveToNext()){
            cursor.getString(0);
        }
        return desc;
        
    }
    //添加病毒数据库
    public static void adddVirus(String md5,String desc){
        SQLiteDatabase db = SQLiteDatabase.openDatabase("data/data/com.mxn.mobilesafe/files/antivirus.db", 
                null, SQLiteDatabase.OPEN_READONLY);
        
        ContentValues values = new ContentValues();
        values.put("md5", md5);
        values.put("desc", desc);
        values.put("type", 6);
        values.put("name", "Android.Adware.AirAD.a");
        db.insert("datable", null, values);
        db.close();
        
    }
    

}

activity_antivirus.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    
    xmlns:android="http://schemas.android.com/apk/res/android">
    
     <TextView 
        style="@style/TitleStyle"
        android:text="病毒查杀"
        />
<LinearLayout 
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_margin="10dp"
    android:orientation="horizontal" >
    
   
    <FrameLayout 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        
        >
       
       <ImageView 
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@drawable/ic_scanner_malware"
    />
         <ImageView 
             android:id="@+id/iv_scanning"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@drawable/act_scanning_03"
    />                     
    </FrameLayout>

<LinearLayout 
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:layout_margin="5dp"
    >        
    <TextView 
    android:id="@+id/tv_init_virus"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="初始化8核杀毒引擎"    
    />
    <ProgressBar
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/progressBar1"       
        ></ProgressBar>
</LinearLayout>
</LinearLayout>    
   <LinearLayout
        android:orientation="vertical"
        android:id="@+id/ll_content"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    ></LinearLayout>     
</LinearLayout>