首先看一下界面：
TaskManagerActivity .java
//進程管理public class TaskManagerActivity extends Activity { @ViewInject(R.id.tv_task_process_count) private TextView tv_task_process_count; @ViewInject(R.id.tv_task_memory) private TextView tv_task_memory; @ViewInject(R.id.list_view) private ListView list_view; private long totalMem; private List taskInfos; private List userTaskInfos; private List systemAppInfos; private TaskManagerAdapter adapter; private int processCount; private long availMem; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); initUI(); initData(); } @Override protected void onResume() { // TODO Auto-generated method stub super.onResume(); if(adapter != null){ adapter.notifyDataSetChanged(); } } private class TaskManagerAdapter extends BaseAdapter { @Override public int getCount() { //判断当前用户是否需要显示系统进程，需要就显示，不需要就不显示 boolean result = SharedPreferencesUtils.getBoolean(TaskManagerActivity.this, "is_show_system", false); if(result){ return userTaskInfos.size() + 1 + systemAppInfos.size() + 1; }else{ return userTaskInfos.size() + 1; } } @Override public Object getItem(int position) { if (position == 0) { return null; } else if (position == userTaskInfos.size() + 1) { return null; } TaskInfo taskInfo; if (position < (userTaskInfos.size() + 1)) { // taskInfo = userTaskInfos.get(position - 1); } else { // int location = position - 1 - userTaskInfos.size() - 1; taskInfo = systemAppInfos.get(location); } return taskInfo; } @Override public long getItemId(int position) { // TODO Auto-generated method stub return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { if (position == 0) { // TextView tv = new TextView(getApplicationContext()); tv.setBackgroundColor(Color.GRAY); tv.setTextColor(Color.WHITE); tv.setText("用户进程：" + userTaskInfos.size() + "个"); return tv; } else if (position == (userTaskInfos.size() + 1)) { TextView tv = new TextView(getApplicationContext()); tv.setBackgroundColor(Color.GRAY); tv.setTextColor(Color.WHITE); tv.setText("系统进程" + systemAppInfos.size() + "个"); return tv; } ViewHolder holder; View view; if (convertView != null && convertView instanceof LinearLayout) { view = convertView; holder = (ViewHolder) view.getTag(); } else { view = View.inflate(TaskManagerActivity.this, R.layout.item_task_manager, null); holder = new ViewHolder(); holder.iv_app_icon = (ImageView) view .findViewById(R.id.iv_app_icon); holder.tv_app_name = (TextView) view .findViewById(R.id.tv_app_name); holder.tv_app_memory_size = (TextView) view .findViewById(R.id.tv_app_memory_size); holder.tv_app_status = (CheckBox) view .findViewById(R.id.tv_app_status); view.setTag(holder); } TaskInfo taskInfo; if (position < (userTaskInfos.size() + 1)) { // taskInfo = userTaskInfos.get(position - 1); } else { // int location = position - 1 - userTaskInfos.size() - 1; taskInfo = systemAppInfos.get(location); } holder.iv_app_icon.setImageDrawable(taskInfo.getIcon()); holder.tv_app_name.setText(taskInfo.getAppName()); holder.tv_app_memory_size.setText("占用内存:" + Formatter.formatFileSize(TaskManagerActivity.this, taskInfo.getMemorySize())); if (taskInfo.isChecked()) { holder.tv_app_status.setChecked(true); } else { holder.tv_app_status.setChecked(false); } // if(taskInfo.getPackageName().equals(getPackageName())){ // holder.tv_app_status.setVisibility(View.INVISIBLE); }else{ // holder.tv_app_status.setVisibility(View.VISIBLE); } return view; } } static class ViewHolder { ImageView iv_app_icon; TextView tv_app_name; TextView tv_app_memory_size; CheckBox tv_app_status; } private void initData() { new Thread() { public void run() { taskInfos = TaskInfoParser .getTaskInfos(TaskManagerActivity.this); userTaskInfos = new ArrayList (); systemAppInfos = new ArrayList (); for (TaskInfo taskInfo : taskInfos) { if (taskInfo.isUserApp()) { userTaskInfos.add(taskInfo); } else { systemAppInfos.add(taskInfo); } } runOnUiThread(new Runnable() { @Override public void run() { adapter = new TaskManagerAdapter(); list_view.setAdapter(adapter); } }); }; }.start(); } private void initUI() { setContentView(R.layout.activity_task_manager); ViewUtils.inject(this); //SystemInfoUtils下文定义 processCount = SystemInfoUtils.getProcessCount(this); tv_task_process_count.setText("运行中进程:" + processCount + "个"); availMem = SystemInfoUtils.getAvailMem(this); totalMem = SystemInfoUtils.getTotalMem(this); tv_task_memory.setText("剩余/总内存:" + Formatter.formatFileSize(TaskManagerActivity.this, availMem) + "/" + Formatter.formatFileSize(TaskManagerActivity.this, totalMem)); list_view.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView parent, View view, int position, long id) { // Object object = list_view.getItemAtPosition(position); if (object != null && object instanceof TaskInfo) { TaskInfo taskInfo = (TaskInfo) object; ViewHolder holder = (ViewHolder) view.getTag(); if(taskInfo.getPackageName().equals(getPackageName())){ return; } if (taskInfo.isChecked()) { taskInfo.setChecked(false); holder.tv_app_status.setChecked(false); } else { taskInfo.setChecked(true); holder.tv_app_status.setChecked(true); } } } }); } /** * 全选 * * @param view */ public void selectAll(View view) { for (TaskInfo taskInfo : userTaskInfos) { if (taskInfo.getPackageName().equals(getPackageName())) { continue; } taskInfo.setChecked(true); } for (TaskInfo taskInfo : systemAppInfos) { taskInfo.setChecked(true); } // 数据发生变化，一定要更新 adapter.notifyDataSetChanged(); } /** * 反选 * * @param view */ public void selectOppsite(View view) { for (TaskInfo taskInfo : userTaskInfos) { if (taskInfo.getPackageName().equals(getPackageName())) { continue; } taskInfo.setChecked(!taskInfo.isChecked()); } for (TaskInfo taskInfo : systemAppInfos) { taskInfo.setChecked(!taskInfo.isChecked()); } adapter.notifyDataSetChanged(); } /** * 清理 * * @param view */ public void killProcess(View view) { ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE); List killLists = new ArrayList (); //清理的总共进程个数 int totalCount = 0; // 释放多少内存 int killMem = 0; for (TaskInfo taskInfo : userTaskInfos) { if (taskInfo.isChecked()) { killLists.add(taskInfo); // userTaskInfos.remove(taskInfo); totalCount++; killMem += taskInfo.getMemorySize(); } } for (TaskInfo taskInfo : systemAppInfos) { if (taskInfo.isChecked()) { killLists.add(taskInfo); // systemAppInfos.remove(taskInfo); totalCount++; killMem += taskInfo.getMemorySize(); // activityManager.killBackgroundProcesses(taskInfo .getPackageName()); } } /** * 当集合在迭代的时候，不能修改集合的大小 */ for (TaskInfo taskInfo : killLists) { //判断是否是用户app if (taskInfo.isUserApp()) { userTaskInfos.remove(taskInfo); // activityManager.killBackgroundProcesses(taskInfo .getPackageName()); } else { systemAppInfos.remove(taskInfo); // activityManager.killBackgroundProcesses(taskInfo .getPackageName()); } } UIUtils.showToast( TaskManagerActivity.this, "共清理" + totalCount + "个进程,释放" + Formatter.formatFileSize(TaskManagerActivity.this, killMem) + "内存"); //processCount //totalCount processCount -= totalCount; tv_task_process_count.setText("运行中的进程:"+ processCount +"个"); // tv_task_memory.setText("剩余/总内存：" + Formatter.formatFileSize(TaskManagerActivity.this, availMem + killMem) + "/" + Formatter.formatFileSize(TaskManagerActivity.this, totalMem)); // 刷新界面 adapter.notifyDataSetChanged(); } /** *设置 * @param view */ public void openSetting(View view){ startActivity(new Intent(TaskManagerActivity.this,TaskManagerSettingActivity.class)); }} TaskInfoParser.java
public class TaskInfoParser { public static List getTaskInfos(Context context) { PackageManager packageManager = context.getPackageManager(); List TaskInfos = new ArrayList (); // ActivityManager activityManager = (ActivityManager) context .getSystemService(context.ACTIVITY_SERVICE); // List appProcesses = activityManager .getRunningAppProcesses(); for (RunningAppProcessInfo runningAppProcessInfo : appProcesses) { TaskInfo taskInfo = new TaskInfo(); // String processName = runningAppProcessInfo.processName; taskInfo.setPackageName(processName); try { MemoryInfo[] memoryInfo = activityManager .getProcessMemoryInfo(new int[]{runningAppProcessInfo.pid}); int totalPrivateDirty = memoryInfo[0].getTotalPrivateDirty() * 1024; taskInfo.setMemorySize(totalPrivateDirty); PackageInfo packageInfo = packageManager.getPackageInfo( processName, 0); Drawable icon = packageInfo.applicationInfo .loadIcon(packageManager); taskInfo.setIcon(icon); String appName = packageInfo.applicationInfo.loadLabel( packageManager).toString(); taskInfo.setAppName(appName); System.out.println("-------------------"); System.out.println("processName="+processName); System.out.println("appName="+appName); ////packageInfo.applicationInfo.flags //ApplicationInfo.FLAG_SYSTEM int flags = packageInfo.applicationInfo.flags; //ApplicationInfo.FLAG_SYSTEM if((flags & ApplicationInfo.FLAG_SYSTEM) != 0 ){ // taskInfo.setUserApp(false); }else{// taskInfo.setUserApp(true); } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); // taskInfo.setAppName(processName); taskInfo.setIcon(context.getResources().getDrawable( R.drawable.ic_launcher)); } TaskInfos.add(taskInfo); } return TaskInfos; }} UIUtils.java
public class UIUtils { public static void showToast(final Activity context,final String msg){ if("main".equals(Thread.currentThread().getName())){ Toast.makeText(context, msg, 1).show(); }else{ context.runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(context, msg, 1).show(); } }); } }} SystemInfoUtils.java
public class SystemInfoUtils { public static boolean isServiceRunning(Context context, String className) { /** *都是管理器 * * ActivityManager 活动（任务/进程）管理器 * * packageManager 包管理器 */ ActivityManager am = (ActivityManager) context .getSystemService(Context.ACTIVITY_SERVICE); //获取到手机上所有运行的进程 List infos = am.getRunningServices(200); for (RunningServiceInfo info : infos) { String serviceClassName = info.service.getClassName(); if (className.equals(serviceClassName)) { return true; } } return false; } public static int getProcessCount(Context context) { //得到进程的个数 ActivityManager activityManager = (ActivityManager) context .getSystemService(context.ACTIVITY_SERVICE); List runningAppProcesses = activityManager .getRunningAppProcesses(); return runningAppProcesses.size(); } public static long getAvailMem(Context context) { //剩余内存 ActivityManager activityManager = (ActivityManager) context .getSystemService(context.ACTIVITY_SERVICE); MemoryInfo memoryInfo = new ActivityManager.MemoryInfo(); //得到内存的基本信息 activityManager.getMemoryInfo(memoryInfo); return memoryInfo.availMem; } public static long getTotalMem(Context context) { //总内存 try { // /proc/meminfo FileInputStream fis = new FileInputStream(new File("/proc/meminfo")); BufferedReader reader = new BufferedReader(new InputStreamReader( fis)); String readLine = reader.readLine(); StringBuffer sb = new StringBuffer(); for (char c : readLine.toCharArray()) { if (c >= '0' && c <= '9') { sb.append(c); } } return Long.parseLong(sb.toString()) * 1024; } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } return 0; }} TaskInfo.java javabean
public class TaskInfo { private Drawable icon; private String packageName; private String appName; private long memorySize; private boolean userApp; private boolean checked; public boolean isChecked() { return checked; } public void setChecked(boolean checked) { this.checked = checked; } public Drawable getIcon() { return icon; } public void setIcon(Drawable icon) { this.icon = icon; } public String getPackageName() { return packageName; } public void setPackageName(String packageName) { this.packageName = packageName; } public String getAppName() { return appName; } public void setAppName(String appName) { this.appName = appName; } public long getMemorySize() { return memorySize; } public void setMemorySize(long memorySize) { this.memorySize = memorySize; } public boolean isUserApp() { return userApp; } public void setUserApp(boolean userApp) { this.userApp = userApp; } @Override public String toString() { return "TaskInfo [packageName=" + packageName + ", appName=" + appName + ", memorySize=" + memorySize + ", userApp=" + userApp + "]"; } } SharedPreferencesUtils.java
public class SharedPreferencesUtils { public static final String SP_NAME = "config"; public static void saveBoolean(Context context,String key , boolean value){ SharedPreferences sp = context.getSharedPreferences(SP_NAME, 0); sp.edit().putBoolean(key, value).commit(); } public static boolean getBoolean(Context context,String key,boolean defValue){ SharedPreferences sp = context.getSharedPreferences(SP_NAME, 0); return sp.getBoolean(key, defValue); }}