学步园

  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

public class ActivityMain extends ListActivity {<br /> @Override<br /> public void onCreate(Bundle savedInstanceState) {<br /> super.onCreate(savedInstanceState);<br /> requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);</p> <p> List<Programe> list = getRunningProcess();<br /> ListAdapter adapter = new ListAdapter(list,this);<br /> getListView().setAdapter(adapter);<br /> }</p> <p> //正在运行的<br /> public List<Programe> getRunningProcess(){<br /> PackagesInfo pi = new PackagesInfo(this);</p> <p> ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);<br /> //获取正在运行的应用<br /> List<RunningAppProcessInfo> run = am.getRunningAppProcesses();<br /> //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<br /> PackageManager pm =this.getPackageManager();<br /> List<Programe> list = new ArrayList<Programe>(); </p> <p> for(RunningAppProcessInfo ra : run){<br /> //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。<br /> if(ra.processName.equals("system") || ra.processName.equals("com.android.phone")){<br /> continue;<br /> }</p> <p> Programe pr = new Programe();<br /> pr.setIcon(pi.getInfo(ra.processName).loadIcon(pm));<br /> pr.setName(pi.getInfo(ra.processName).loadLabel(pm).toString());<br /> System.out.println(pi.getInfo(ra.processName).loadLabel(pm).toString());<br /> list.add(pr);<br /> }<br /> return list;<br /> }</p> <p>} 

ListAdapter.java

public class ListAdapter extends BaseAdapter {<br /> List<Programe> list = new ArrayList<Programe>();<br /> LayoutInflater la;<br /> Context context;</p> <p> public ListAdapter(List<Programe> list ,Context context){<br /> this.list = list;<br /> this.context = context;<br /> }</p> <p> @Override<br /> public int getCount() {<br /> // TODO Auto-generated method stub<br /> return list.size();<br /> }<br /> @Override<br /> public Object getItem(int position) {<br /> // TODO Auto-generated method stub<br /> return list.get(position);<br /> }<br /> @Override<br /> public long getItemId(int position) {<br /> // TODO Auto-generated method stub<br /> return position;<br /> }<br /> @Override<br /> public View getView(int position, View convertView, ViewGroup parent) {<br /> ViewHolder holder;<br /> if(convertView == null)<br /> {<br /> la = LayoutInflater.from(context);<br /> convertView=la.inflate(R.layout.list_item, null);</p> <p> holder = new ViewHolder();<br /> holder.imgage=(ImageView) convertView.findViewById(R.id.image);<br /> holder.text = (TextView) convertView.findViewById(R.id.text);</p> <p> convertView.setTag(holder);<br /> }else{<br /> holder = (ViewHolder) convertView.getTag();<br /> }<br /> final Programe pr = (Programe)list.get(position);<br /> //设置图标<br /> holder.imgage.setImageDrawable(pr.getIcon());<br /> //设置程序名<br /> holder.text.setText(pr.getName());</p> <p> return convertView;<br /> }<br /> }<br /> class ViewHolder{<br /> TextView text;<br /> ImageView imgage;<br /> } 

PackagesInfo.java

public class PackagesInfo {<br /> private List<ApplicationInfo> appList;</p> <p> public PackagesInfo(Context context){<br /> //通包管理器，检索所有的应用程序（甚至卸载的）与数据目录<br /> PackageManager pm = context.getApplicationContext().getPackageManager();<br /> appList = pm.getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES);<br /> }</p> <p> /**<br /> * 通过一个程序名返回该程序的一个Application对象。<br /> * @param name 程序名<br /> * @return ApplicationInfo<br /> */</p> <p> public ApplicationInfo getInfo(String name){<br /> if(name == null){<br /> return null;<br /> }<br /> for(ApplicationInfo appinfo : appList){<br /> if(name.equals(appinfo.processName)){<br /> return appinfo;<br /> }<br /> }<br /> return null;<br /> }</p> <p>}<br />  

Programe.java

public class Programe {<br /> //图标<br /> private Drawable icon;<br /> //程序名<br /> private String name;</p> <p> public Drawable getIcon() {<br /> return icon;<br /> }<br /> public void setIcon(Drawable icon) {<br /> this.icon = icon;<br /> }<br /> public String getName() {<br /> return name;<br /> }<br /> public void setName(String name) {<br /> this.name = name;<br /> }</p> <p>} 

list_item.xml

<?xml version="1.0" encoding="UTF-8"?><br /> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"<br /> android:orientation="horizontal"<br /> android:layout_width="wrap_content"<br /> android:layout_height="wrap_content"<br /> ><br /> <ImageView<br /> android:id="@+id/image"<br /> android:layout_width="wrap_content"<br /> android:layout_height="wrap_content"<br /> android:layout_marginRight="10dip"<br /> /><br /> <TextView<br /> android:id="@+id/text"<br /> android:layout_width="wrap_content"<br /> android:layout_height="wrap_content"<br /> /></p> <p> </LinearLayout> 

效果如图：