<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    tools:context=".KillVirusActivity">

    <TextView

        style="@style/TitleStyle"

        android:text="手机杀毒" />

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content">

        <RelativeLayout

            android:layout_width="wrap_content"

            android:layout_height="wrap_content">

            <ImageView

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:background="@mipmap/ic_scanner_malware" />

            <ImageView

                android:id="@+id/ivKV_scaning"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:background="@mipmap/act_scanning_03" />

        </RelativeLayout>

        <LinearLayout

            android:layout_width="match_parent"

            android:layout_height="match_parent"

            android:orientation="vertical"

            android:gravity="center">

            <TextView

                android:id="@+id/tvKV_scaning"

                android:text="扫描过程"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content" />

            <!--自定义进度条图片(3种类型)-->

            <ProgressBar

                android:id="@+id/pbKV_bar"

                android:progressDrawable="@drawable/progress_bg"

                style="@style/Base.Widget.AppCompat.ProgressBar.Horizontal"

                android:layout_width="match_parent"

                android:layout_height="wrap_content" />

        </LinearLayout>

    </LinearLayout>

    <!--ScrollView只有一个直接子节点-->

    <ScrollView

        android:layout_width="match_parent"

        android:layout_height="wrap_content">

        <LinearLayout

            android:id="@+id/ll_add_textview"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:orientation="vertical">

        </LinearLayout>

    </ScrollView>

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

    <!--进度条为0，使用的图片-->

    <item android:id="@android:id/background" android:drawable="@drawable/security_progress_bg"/>

    <!--进度条为0-100%之间，使用的图片-->

    <item android:id="@android:id/secondaryProgress" android:drawable="@drawable/security_progress"/>

    <!--进度条为100%时，使用的图片-->

    <item android:id="@android:id/progress" android:drawable="@drawable/security_progress"/>

</layer-list>

package com.example.administrator.test62360safeguard;

import android.annotation.SuppressLint;

import android.content.pm.PackageInfo;

import android.content.pm.PackageManager;

import android.content.pm.Signature;

import android.graphics.Color;

import android.os.Handler;

import android.os.Message;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.animation.Animation;

import android.view.animation.RotateAnimation;

import android.widget.ImageView;

import android.widget.LinearLayout;

import android.widget.ProgressBar;

import android.widget.TextView;

import com.example.administrator.test62360safeguard.Utils.MD5Util;

import com.example.administrator.test62360safeguard.engine.VirusDao;

import java.util.ArrayList;

import java.util.List;

import java.util.Random;

public class KillVirusActivity extends AppCompatActivity {

    ImageView ivKV_scaning;

    TextView tvKV_scaning;

    ProgressBar pbKV_bar;

    LinearLayout ll_add_textview;

    protected static final int SCANING = 100;

    protected static final int SCAN_FINISH = 101;

    private List<ScanResultInfoBean> virusScanInfoList;

    private int index = 0;

    @SuppressLint("HandlerLeak")

    private Handler handler = new Handler(){

        public void handleMessage(android.os.Message msg) {

            switch (msg.what) {

                case SCANING:

                    //1,显示正在扫描应用的名称

                    ScanResultInfoBean info = (ScanResultInfoBean)msg.obj;

                    tvKV_scaning.setText(info.name);

                    //2,在线性布局中添加一个正在扫描应用的TextView

                    TextView textView = new TextView(getApplicationContext());

                    if(info.isVirus){

                        //是病毒

                        textView.setTextColor(Color.RED);

                        textView.setText("发现病毒:"+info.name);

                    }else{

                        //不是病毒

                        textView.setTextColor(Color.BLACK);

                        textView.setText("扫描安全:"+info.name);

                    }

                    ll_add_textview.addView(textView, 0); //参数2：设置为0，使得控件放在LinearLayout的顶部

                    break;

                case SCAN_FINISH:

                    tvKV_scaning.setText("扫描完成");

                    //停止真正执行的旋转动画

                    ivKV_scaning.clearAnimation();

                    break;

            }

        }

    };

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_kill_virus);

        initUI();

        initAnimation();

        checkVirus();

    }

    /**

     * 病毒扫描过程

     */

    private void checkVirus() {

        //耗时操作，开启一个线程

        new Thread(){

            public void run() {

                //1.获取数据库中所有的病毒的md5码

                List<String> virusList = VirusDao.getVirusList();

                //获取手机上面的所有应用程序签名文件的md5码

                //2.1获取包管理者对象

                PackageManager pm = getPackageManager();

                //2.2获取所有应用程序签名文件(PackageManager.GET_SIGNATURES 已安装应用的签名文件+)

                //PackageManager.GET_UNINSTALLED_PACKAGES    卸载完了的应用,残余的文件

                List<PackageInfo> packageInfoList = pm.getInstalledPackages(

                        PackageManager.GET_SIGNATURES + PackageManager.GET_UNINSTALLED_PACKAGES);

                //2.3创建记录病毒的集合

                virusScanInfoList = new ArrayList<>();

                //设置进度条的最大值

                pbKV_bar.setMax(packageInfoList.size());

                //3.遍历应用集合

                for (PackageInfo packageInfo : packageInfoList) {

                    //获取签名文件的数组

                    Signature[] signatures = packageInfo.signatures;

                    //获取签名文件数组的第一位,然后进行md5,将此md5和数据库中的md5比对

                    Signature signature = signatures[0];

                    String string = signature.toCharsString();

                    //32位字符串,16进制字符(0-f)

                    String encoder = MD5Util.encoder(string);

                    //创建内部类ScanResultInfoBean的javabean用来存储一个应用经过扫描后的某些属性

                    ScanResultInfoBean scanResultInfoBean = new ScanResultInfoBean();

                    //4,比对应用是否为病毒

                    if(virusList.contains(encoder)){

                        //5.记录病毒

                        scanResultInfoBean.isVirus = true;

                        virusScanInfoList.add(scanResultInfoBean);

                    }else{

                        scanResultInfoBean.isVirus = false;

                    }

                    //6,维护对象的包名,以及应用名称

                    scanResultInfoBean.packageName = packageInfo.packageName;

                    scanResultInfoBean.name = packageInfo.applicationInfo.loadLabel(pm).toString();

                    //7.在扫描的过程中,需要更新进度条

                    index++;

                    pbKV_bar.setProgress(index);

                    //给当前的子线程设置一段睡眠时间，模拟病毒扫描过程(即让扫描过程不要太快，达到肉眼可见的效果)

                    try {

                        Thread.sleep(50+new Random().nextInt(100));

                    } catch (InterruptedException e) {

                        e.printStackTrace();

                    }

                    //8.在子线程中发送消息,告知主线程更新UI(1:顶部扫描应用的名称2:扫描过程中往线性布局中添加view)

                    Message msg = Message.obtain();

                    msg.what = SCANING;

                    msg.obj = scanResultInfoBean;

                    handler.sendMessage(msg);

                }

                Message msg = Message.obtain();

                msg.what = SCAN_FINISH;

                handler.sendMessage(msg);

            }

        }.start();

    }

    /**

     * 此javabean用来记录扫描结果中需要存储的应用相关信息

     * isVirus 应用是否为病毒

     * packageName 包名

     * name 应用名称

     */

    class ScanResultInfoBean{

        public boolean isVirus;

        public String packageName;

        public String name;

    }

    private void initAnimation() {

        //参数1,2设置旋转的角度

        RotateAnimation rotateAnimation = new RotateAnimation(0, 360,

                Animation.RELATIVE_TO_SELF, 0.5f,

                Animation.RELATIVE_TO_SELF, 0.5f);

        rotateAnimation.setDuration(1000);

        //设置动画一直旋转

        rotateAnimation.setRepeatMode(Animation.INFINITE);

        //保存动画执行结束后的状态

        rotateAnimation.setFillAfter(true);

        //开始执行动画

        ivKV_scaning.startAnimation(rotateAnimation);

    }

    private void initUI() {

        ivKV_scaning=findViewById(R.id.ivKV_scaning);

        tvKV_scaning=findViewById(R.id.tvKV_scaning);

        pbKV_bar=findViewById(R.id.pbKV_bar);

        ll_add_textview=findViewById(R.id.ll_add_textview);

    }

}