028 Android 旋转动画+病毒查杀效果+自定义样式的ProgressBar

1.目标效果

旋转动画+病毒查杀效果

2.xml布局文件

(1)activity_kill_virus.xml

<?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>

(2)自定义样式的进度条

<?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>

3.java后台

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);
    }
}

4.效果图