本文转自：http://www.linuxidc.com/Linux/2011-09/42287.htm
最近想做一个任务管理器练一练手，第一道题就是获取手机中正在运行的程序。后来在网上找了一下资料，终于有了眉目。废话不多说！看代码。
ActivityMain.java
1.public class ActivityMain extends ListActivity {
2. @Override
3. public void onCreate(Bundle savedInstanceState) {
4. super.onCreate(savedInstanceState);
5. requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
6.
7. List<Programe> list = getRunningProcess();
8. ListAdapter adapter = new ListAdapter(list,this);
9. getListView().setAdapter(adapter);
10. }
11.
12. //正在运行的
13. public List<Programe> getRunningProcess(){
14. PackagesInfo pi = new PackagesInfo(this);
15.
16. ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
17. //获取正在运行的应用
18. List<RunningAppProcessInfo> run = am.getRunningAppProcesses();
19. //获取包管理器，在这里主要通过包名获取程序的图标和程序名
20. PackageManager pm =this.getPackageManager();
21. List<Programe> list = new ArrayList<Programe>();
22.
23. for(RunningAppProcessInfo ra : run){
24. //这里主要是过滤系统的应用和电话应用，当然你也可以把它注释掉。
25. if(ra.processName.equals("system") || ra.processName.equals("com.Android.phone")){
26. continue;
27. }
28.
29. Programe pr = new Programe();
30. pr.setIcon(pi.getInfo(ra.processName).loadIcon(pm));
31. pr.setName(pi.getInfo(ra.processName).loadLabel(pm).toString());
32. System.out.println(pi.getInfo(ra.processName).loadLabel(pm).toString());
33. list.add(pr);
34. }
35. return list;
36. }
37.
38.}
ListAdapter.java
1.public class ListAdapter extends BaseAdapter {
2. List<Programe> list = new ArrayList<Programe>();
3. LayoutInflater la;
4. Context context;
5.
6. public ListAdapter(List<Programe> list ,Context context){
7. this.list = list;
8. this.context = context;
9. }
10.
11. @Override
12. public int getCount() {
13. // TODO Auto-generated method stub
14. return list.size();
15. }
16. @Override
17. public Object getItem(int position) {
18. // TODO Auto-generated method stub
19. return list.get(position);
20. }
21. @Override
22. public long getItemId(int position) {
23. // TODO Auto-generated method stub
24. return position;
25. }
26. @Override
27. public View getView(int position, View convertView, ViewGroup parent) {
28. ViewHolder holder;
29. if(convertView == null)
30. {
31. la = LayoutInflater.from(context);
32. convertView=la.inflate(R.layout.list_item, null);
33.
34. holder = new ViewHolder();
35. holder.imgage=(ImageView) convertView.findViewById(R.id.image);
36. holder.text = (TextView) convertView.findViewById(R.id.text);
37.
38. convertView.setTag(holder);
39. }else{
40. holder = (ViewHolder) convertView.getTag();
41. }
42. final Programe pr = (Programe)list.get(position);
43. //设置图标
44. holder.imgage.setImageDrawable(pr.getIcon());
45. //设置程序名
46. holder.text.setText(pr.getName());
47.
48. return convertView;
49. }
50.}
51.class ViewHolder{
52. TextView text;
53. ImageView imgage;
54.}
PackagesInfo.java
1.public class PackagesInfo {
2. private List<ApplicationInfo> appList;
3.
4. public PackagesInfo(Context context){
5. //通包管理器，检索所有的应用程序（甚至卸载的）与数据目录
6. PackageManager pm = context.getApplicationContext().getPackageManager();
7. appList = pm.getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES);
8. }
9.
10.
11.
12. /**
13. * 通过一个程序名返回该程序的一个Application对象。
14. * @param name 程序名
15. * @return ApplicationInfo
16. */
17.
18. public ApplicationInfo getInfo(String name){
19. if(name == null){
20. return null;
21. }
22. for(ApplicationInfo appinfo : appList){
23. if(name.equals(appinfo.processName)){
24. return appinfo;
25. }
26. }
27. return null;
28. }
29.
30.}
Programe.java
1.public class Programe {
2. //图标
3. private Drawable icon;
4. //程序名
5. private String name;
6.
7. public Drawable getIcon() {
8. return icon;
9. }
10. public void setIcon(Drawable icon) {
11. this.icon = icon;
12. }
13. public String getName() {
14. return name;
15. }
16. public void setName(String name) {
17. this.name = name;
18. }
19.
20.}
list_item.xml
1.<?xml version="1.0" encoding="UTF-8"?>
2.<LinearLayout xmlns:Android="http://schemas.android.com/apk/res/android"
3. android:orientation="horizontal"
4. Android:layout_width="wrap_content"
5. android:layout_height="wrap_content"
6. >
7. <ImageView
8. Android:id="@+id/image"
9. android:layout_width="wrap_content"
10. Android:layout_height="wrap_content"
11. android:layout_marginRight="10dip"
12. />
13. <TextView
14. Android:id="@+id/text"
15. android:layout_width="wrap_content"
16. Android:layout_height="wrap_content"
17. />
18.
19. </LinearLayout>