Android项目实战_手机安全卫士进程管理

###1.设备进程信息获取
获取设备运行进程

ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningAppProcessInfo> runningAppProcessInfos = am.getRunningAppProcesses();

获取设备RAM

MemoryInfo outInfo = new ActivityManager.MemoryInfo();
am.getMemoryInfo(outInfo);
outInfo.availMem;//设备可用RAM
outInfo.totalMem;//设备总RAM

###2.获取进程占用RAM
ActivityManager am = (ActivityManager) context
.getSystemService(Context.ACTIVITY_SERVICE);
MemoryInfo[] processMemoryInfo = am.getProcessMemoryInfo(new int[]{info.pid});
long memSize = processMemoryInfo[0].getTotalPrivateDirty()*1024;

###3.ListView中Item中有CheckBox、Button等的焦点处理
ListView的item布局中有CheckBox、Button等会获取焦点的控件会抢走焦点，造成ListView的item点击事件相应不了

解决方法：控件设置

android:clickable="false"
android:focusable="false"

或者

android:focusable="false"
//descendant 后裔; 后代; （由过去类似物发展来的） 派生物; 弟子;
android:descendantFocusability="blocksDescendants"

###10.ListView中getItemAtPosition()的使用
ListView的getItemAtPosition()方法的返回值即为adapter中getItem()方法返回的对象

###4.清理进程
1.添加权限
<uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES" />
2.具体实现
ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
am.killBackgroundProcesses(String pkgName);

 package com.hb.mobilesafe.activities;

 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;

 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.app.ActivityManager;
 import android.app.ActivityManager.MemoryInfo;
 import android.graphics.Color;
 import android.os.Bundle;
 import android.text.format.Formatter;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.ViewGroup;
 import android.view.Window;
 import android.widget.AbsListView;
 import android.widget.AbsListView.OnScrollListener;
 import android.widget.AdapterView;
 import android.widget.AdapterView.OnItemClickListener;
 import android.widget.BaseAdapter;
 import android.widget.CheckBox;
 import android.widget.ImageView;
 import android.widget.ListView;
 import android.widget.RelativeLayout;
 import android.widget.TextView;

 import com.hb.demo_mobilesafe.R;
 import com.hb.mobilesafe.bean.ProInfo;
 import com.hb.mobilesafe.utils.ProgressInfoUtil;

 public class ProcessManagerActivity extends Activity implements OnClickListener {
     private TextView tv_clean,tv_allselect,tv_inverse;
     private ListView lv_progress_show;
     private TextView tv_progres_ssoft,tv_storage;
     private TextView tv_software_count;
     private List<ProInfo> infosRun;
     private List<ProInfo> userInfo;
     private List<ProInfo> sysInfo;
     private MyProAdapter adapter;
     private ActivityManager am;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         requestWindowFeature(Window.FEATURE_NO_TITLE);
         setContentView(R.layout.activity_processmanager);
         initView();
         initDate();
     }

     private void initView() {
         tv_clean=(TextView) findViewById(R.id.tv_clean);
         tv_allselect=(TextView) findViewById(R.id.tv_allselect);
         tv_inverse=(TextView) findViewById(R.id.tv_inverse);

         tv_progres_ssoft=(TextView) findViewById(R.id.tv_progres_ssoft);
         tv_storage=(TextView) findViewById(R.id.tv_storage);
         tv_software_count=(TextView) findViewById(R.id.tv_software_count);

         lv_progress_show=(ListView) findViewById(R.id.lv_progress_show);

         tv_clean.setOnClickListener(this);
         tv_allselect.setOnClickListener(this);
         tv_inverse.setOnClickListener(this);
     }
     private void initDate() {

         tv_progres_ssoft.setText("运行中的进程："+getRunpro()+"个");
         tv_storage.setText("可用内存/总内存："+Formatter.formatFileSize(this, getAvimen())
                 +"/"+Formatter.formatFileSize(this, getTotalMen()));
         adapter = new MyProAdapter();
         sysInfo = new ArrayList<ProInfo>();
         userInfo = new ArrayList<ProInfo>();
         new Thread(){
             public void run() {
                 infosRun = ProgressInfoUtil.getInfosRun(ProcessManagerActivity.this);
                 isSysUserApp();
                 runOnUiThread(new Runnable() {
                     public void run() {
                         lv_progress_show.setAdapter(adapter);
                     }
                 });
             };
         }.start();
         lv_progress_show.setOnScrollListener(new OnScrollListener() {

             @Override
             public void onScrollStateChanged(AbsListView view, int scrollState) {

             }

             @Override
             public void onScroll(AbsListView view, int firstVisibleItem,
                     int visibleItemCount, int totalItemCount) {
                 if(userInfo!=null && sysInfo !=null){

                     if(firstVisibleItem==0){
                         tv_software_count.setVisibility(View.GONE);
                     }else{

                         tv_software_count.setVisibility(View.VISIBLE);
                     }
                     if(firstVisibleItem <userInfo.size()){
                         tv_software_count.setText("用户进程："+userInfo.size());
                     }else{
                         tv_software_count.setText("系统进程："+sysInfo.size());
                     }
                 }
             }
         });
         lv_progress_show.setOnItemClickListener(new OnItemClickListener() {

             @Override
             public void onItemClick(AdapterView<?> parent, View view,
                     int position, long id) {
                 if(position == 0 || position == userInfo.size()+1){
                     return;
                 }else if(position < userInfo.size()+1){

                     int newPosition=position -1;
                     boolean isCheck = userInfo.get(newPosition).isCheck();
                     if(isCheck){

                         userInfo.get(newPosition).setCheck(false);
                     }else{

                         userInfo.get(newPosition).setCheck(true);
                     }
                 }else{
                     int newPosition=position-userInfo.size()-2;
                     boolean isCheck = sysInfo.get(newPosition).isCheck();
                     if(isCheck){
                         sysInfo.get(newPosition).setCheck(false);
                     }else{

                         sysInfo.get(newPosition).setCheck(true);
                     }
                 }
                 adapter.notifyDataSetChanged();
             }
         });
     }

     /**
      * 一键清理，全选，反选
      */
     @Override
     public void onClick(View v) {
         switch (v.getId()) {
         case R.id.tv_clean:
             am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
             Iterator<ProInfo> userIterator = userInfo.iterator();
             Iterator<ProInfo> sysIterator = sysInfo.iterator();
             while (userIterator.hasNext()) {
                 ProInfo next = userIterator.next();
                 if(next.isCheck()){
                     am.killBackgroundProcesses(next.getAppPackageName());
                     userIterator.remove();
                 }
             }
             while (sysIterator.hasNext()) {
                 ProInfo next = sysIterator.next();
                 if(next.isCheck()){
                     am.killBackgroundProcesses(next.getAppPackageName());
                     sysIterator.remove();
                 }
             }
             adapter.notifyDataSetChanged();

             break;

         case R.id.tv_allselect:
             for (ProInfo infos : infosRun) {
                 if(!"com.hb.demo_mobilesafe".equals(infos.getAppPackageName())){
                     infos.setCheck(true);
                 }
             }
             adapter.notifyDataSetChanged();
             break;

         case R.id.tv_inverse:

             for (ProInfo infos : infosRun) {
                 if(infos.isCheck() && !("com.hb.demo_mobilesafe").equals(infos.getAppPackageName())){
                     infos.setCheck(false);
                 }else if(!infos.isCheck() && !("com.hb.demo_mobilesafe").equals(infos.getAppPackageName())){
                     infos.setCheck(true);
                 }

             }
             adapter.notifyDataSetChanged();
             break;
         }
     }
     /**
      * 运行中的进程
      * @return
      */
     private  int getRunpro(){
         ActivityManager am=(ActivityManager) getSystemService(ACTIVITY_SERVICE);
         int size = am.getRunningAppProcesses().size();
         return size;

     }
     /**
      * 可用内存
      */
     private  long getAvimen(){
         ActivityManager am=(ActivityManager) getSystemService(ACTIVITY_SERVICE);
         MemoryInfo outInfo = new MemoryInfo();
         am.getMemoryInfo(outInfo);
         return outInfo.availMem;

     }
     /**
      * 总内存
      */
     private  long getTotalMen(){
         ActivityManager am=(ActivityManager) getSystemService(ACTIVITY_SERVICE);
         MemoryInfo outInfo = new MemoryInfo();
         am.getMemoryInfo(outInfo);
         return outInfo.totalMem;

     }
     /**
      * 区分系统应用和用户应用
      */
     public void isSysUserApp(){

         for (ProInfo proInfo: infosRun) {
             boolean sys = proInfo.isSys();
             if(sys){
                 sysInfo.add(proInfo);
             }else{
                 userInfo.add(proInfo);

             }
         }
     }
     class MyProAdapter extends BaseAdapter{
         @SuppressWarnings("null")
         @SuppressLint("ViewHolder") @Override
         public View getView(int position, View view, ViewGroup parent) {
             ViewHolder holder = null;
             if(view != null && view instanceof RelativeLayout){
                 holder=(ViewHolder) view.getTag();
             }else{
                 holder=new ViewHolder();
                 view = View.inflate(ProcessManagerActivity.this, R.layout.proinfo_item, null);
                 holder.iv_appIcon=(ImageView) view.findViewById(R.id.iv_pro_icon);
                 holder.tv_appName=(TextView) view.findViewById(R.id.tv_pro_name);
                 holder.tv_proSize=(TextView) view.findViewById(R.id.tv_pro_size);
                 holder.cb_isCheck=(CheckBox) view.findViewById(R.id.cb_ischeak);
                 view.setTag(holder);
             }
             if(position == 0){
                 TextView tv0= new TextView(ProcessManagerActivity.this);
                 if(userInfo.size()==0){
                     tv0.setHeight(0);
                     return tv0;
                 }
                 tv0.setClickable(false);
                 tv0.setTextColor(Color.WHITE);
                 tv0.setBackgroundColor(Color.GRAY);
                 tv0.setText("用户进程："+userInfo.size());
                 return tv0;
             }else if(position ==userInfo.size()+1){
                 TextView tv1= new TextView(ProcessManagerActivity.this);
                 tv1.setClickable(false);
                 tv1.setTextColor(Color.WHITE);
                 tv1.setBackgroundColor(Color.GRAY);
                 tv1.setText("系统进程："+sysInfo.size());
                 return tv1;
             }else if(position <userInfo.size()+1){
                 int newPosition = position-1;
                 ProInfo proInfo = userInfo.get(newPosition);
                 holder.iv_appIcon.setImageDrawable(proInfo.getAppIcon());
                 holder.tv_appName.setText(proInfo.getAppName());
                 holder.tv_proSize.setText("进程大小："+Formatter.formatFileSize(ProcessManagerActivity.this, proInfo.getProSize()));
                 holder.cb_isCheck.setChecked(proInfo.isCheck());
                 String appPackageName = proInfo.getAppPackageName();
                 if(appPackageName.equals(getPackageName())){
                     holder.cb_isCheck.setVisibility(View.GONE);
                 }else {
                     holder.cb_isCheck.setVisibility(View.VISIBLE);
                 }

             }else{
                 int newPosition = position-userInfo.size()-2;
                 ProInfo proInfo = sysInfo.get(newPosition);
                 holder.iv_appIcon.setImageDrawable(proInfo.getAppIcon());
                 holder.tv_appName.setText(proInfo.getAppName());
                 holder.tv_proSize.setText("进程大小："+Formatter.formatFileSize(ProcessManagerActivity.this, proInfo.getProSize()));
                 holder.cb_isCheck.setChecked(proInfo.isCheck());
             }
             return view;
         }
         @Override
         public int getCount() {
             return userInfo.size()+1+sysInfo.size()+1;
         }

         @Override
         public Object getItem(int position) {
             return null;
         }

         @Override
         public long getItemId(int position) {
             return 0;
         }
     }
     class ViewHolder{
         ImageView iv_appIcon;
         CheckBox cb_isCheck;
         TextView tv_appName;
         TextView tv_proSize;
     }
 }

xml:

 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:gravity="center_horizontal" >

     <TextView
         android:id="@+id/tv_title"
         android:layout_width="match_parent"
         android:layout_height="46dp"
         android:background="#A1FF80"
         android:gravity="center_vertical"
         android:text="进程管理"
         android:textSize="20sp" />

     <RelativeLayout
         android:id="@+id/rl_size"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_below="@id/tv_title" >

         <TextView
             android:id="@+id/tv_progres_ssoft"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:text="运行中的进程：19个"
             android:textSize="10sp" />

         <TextView
             android:id="@+id/tv_storage"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_alignParentRight="true"
             android:text="可用内存/总内存：20MB/60MB"
             android:textSize="10sp" />
     </RelativeLayout>

     <TextView
         android:id="@+id/tv_software_count"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_below="@id/rl_size"
         android:background="#888888"
         android:visibility="gone"
         android:text="用户进程：5"
         android:textColor="#ffffff"
         />

     <ListView
         android:clickable="true"
         android:id="@+id/lv_progress_show"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_above="@+id/ll"
         android:layout_below="@id/tv_software_count" />

     <LinearLayout
         android:id="@+id/ll"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_alignParentBottom="true"
         android:orientation="horizontal"
         android:padding="2dip" >

         <TextView
             android:id="@+id/tv_clean"
             android:layout_width="0dp"
             android:layout_height="wrap_content"
             android:layout_weight="2"
             android:background="@drawable/clean_button_selector"
             android:textSize="15sp" />

         <TextView
             android:id="@+id/tv_allselect"
             android:layout_width="0dp"
             android:layout_height="wrap_content"
             android:layout_weight="1"
             android:background="@drawable/select_btn_selector"
             android:textSize="15sp" />

         <TextView
             android:id="@+id/tv_inverse"
             android:layout_width="0dp"
             android:layout_height="wrap_content"
             android:layout_weight="1"
             android:background="@drawable/inverse_btn_selector"
             android:textSize="15sp" />
     </LinearLayout>

 </RelativeLayout>