Android基于特征码查杀手机病毒

package com.example.thefinalproject;import java.util.List;import com.example.thefinalproject.R;import MD5.MD5Encoder;import android.app.Activity;import android.content.pm.PackageInfo;import android.content.pm.PackageManager;import android.content.pm.Signature;import android.database.Cursor;import android.database.sqlite.SQLiteDatabase;import android.graphics.drawable.AnimationDrawable;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.MotionEvent;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.ProgressBar;import android.widget.ScrollView;import android.widget.TextView;public class AntiVirus extends Activity {protected static final int STOP = 100;private ImageView iv;private ProgressBar pb;private LinearLayout ll;private AnimationDrawable anim;private ScrollView sv;private SQLiteDatabase db;private boolean flagscanning = false;private Handler handler = new Handler() {@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg); if(msg.what==STOP){     ll.removeAllViews(); anim.stop();  }String str = (String) msg.obj; TextView tv = new TextView(getApplicationContext()); tv.setText(str); ll.setOrientation(LinearLayout.VERTICAL); ll.addView(tv); sv.scrollBy(0, 20);System.out.println(str);}};@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.antivirus_screen);db = SQLiteDatabase.openDatabase("/sdcard/antivirus.db", null,SQLiteDatabase.OPEN_READONLY);iv = (ImageView) this.findViewById(R.id.iv);pb = (ProgressBar) this.findViewById(R.id.progressBar1);ll = (LinearLayout) this.findViewById(R.id.ll);iv.setBackgroundResource(R.drawable.anti_anim);sv = (ScrollView) this.findViewById(R.id.sv);anim = (AnimationDrawable) iv.getBackground();}@Overridepublic boolean onTouchEvent(MotionEvent event) {if(flagscanning)return false;if (event.getAction() == MotionEvent.ACTION_UP) {flagscanning= true;anim.start();new Thread() {public void run() {List infos = getPackageManager().getInstalledPackages(PackageManager.GET_UNINSTALLED_PACKAGES| PackageManager.GET_SIGNATURES);// 获取每一个应用程序的签名 获取到这个签名后 需要在数据库里面查询pb.setMax(infos.size());int total = 0;int virustotal = 0;for (PackageInfo info : infos) {total++;try {sleep(20);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}Message msg = Message.obtain();msg.obj = "正在扫描" + info.packageName;handler.sendMessage(msg);Signature[] signs = info.signatures;String str = signs[0].toCharsString();String md5 = MD5Encoder.encode(str);if("6c20c50051ad1dedce0528e0f3dfbc96".equals(md5)){System.err.println("----------");}Cursor cursor = db.rawQuery("select desc from datable where md5=?",new String[] { md5 });if (cursor.moveToFirst()) {String desc = cursor.getString(0);msg = Message.obtain();msg.obj = info.packageName + ": " + desc;handler.sendMessage(msg);virustotal++;}cursor.close();pb.setProgress(total);}Message msg = Message.obtain();msg.what = STOP;msg.obj = "扫描完毕 ,共发现" + virustotal + "个病毒";handler.sendMessage(msg);flagscanning = false;pb.setProgress(0);};}.start();}return super.onTouchEvent(event);}@Overrideprotected void onDestroy() {if (db.isOpen())db.close();super.onDestroy();}}
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