Android implementation gets the running application _android

Because you want to add this functionality in the framework, you write a appliction to get the running application:
Let's look at the picture first:

This app is simply implemented to get a system-less application and some common system applications, shown in a ListView, and add clicks (Revert to your Open Interface) and long press events (close the application).
Let's look at the code:
Just post it and add a comment (write it directly in a file):

Copy Code code as follows:

Package andorid.tasks;
Import Java.io.File;
Import java.util.ArrayList;
Import Java.util.HashMap;
Import java.util.List;
Import android.app.Activity;
Import Android.app.ActivityManager;
Import Android.app.ActivityManager.RunningAppProcessInfo;
Import Android.app.AlertDialog;
Import Android.content.Context;
Import Android.content.DialogInterface;
Import Android.content.DialogInterface.OnClickListener;
Import android.content.Intent;
Import Android.content.pm.ApplicationInfo;
Import Android.content.pm.PackageManager;
Import android.graphics.drawable.Drawable;
Import Android.os.Bundle;
Import Android.view.View;
Import Android.widget.AdapterView;
Import Android.widget.AdapterView.OnItemLongClickListener;
Import Android.widget.ImageView;
Import Android.widget.ListView;
Import Android.widget.SimpleAdapter;
Import Android.widget.AdapterView.OnItemClickListener;
Import Android.widget.SimpleAdapter.ViewBinder;
public class Managertasksactivity extends activity {
Private ListView ListView;
Private Packagemanager pm;
@Override
public void OnCreate (Bundle savedinstancestate) {
Super.oncreate (savedinstancestate);
Setcontentview (R.layout.task_main);
pm= This.getpackagemanager ()//Get Package Manager
listview= (ListView) Findviewbyid (R.id.list_view);
Loadlist (this);//Load ListView
}
private void Loadlist (context context)
{
Arraylisttry{
Activitymanager am = (activitymanager) context.getsystemservice (Context.activity_service); Get Activitymanager Object
list<runningappprocessinfo> runningtasks = am.getrunningappprocesses (); Get all ongoing programs stored in a list
for (int i=0;i<runningtasks.size (); i++)
{
PackageInfo pinfo=new PackageInfo (context)//Get PackageInfo Object
Get application which isn't in system and the usually
If a system-neutral application and some common applications are added to the list
if (Pinfo.getinfo (Runningtasks.get (i). processname). Flags&pinfo.getinfo (Runningtasks.get (i). ProcessName). Flag_system) ==0
|| (Runningtasks.get (i). processname). Equals ("Com.android.contacts")
|| (Runningtasks.get (i). processname). Equals ("Com.android.email")
|| (Runningtasks.get (i). processname). Equals ("Com.android.settings")
|| (Runningtasks.get (i). processname). Equals ("Com.android.music")
|| (Runningtasks.get (i). processname). Equals ("Com.android.calendar")
|| (Runningtasks.get (i). processname). Equals ("Com.android.calculator2")
|| (Runningtasks.get (i). processname). Equals ("Com.android.browser")
|| (Runningtasks.get (i). processname). Equals ("Com.android.camera")
|| (Runningtasks.get (i). processname). Equals ("Com.cooliris.media")
|| (Runningtasks.get (i). processname). Equals ("Com.android.bluetooth")
|| (Runningtasks.get (i). processname). Equals ("Com.android.mms"))
{
String dir = pinfo.getinfo (Runningtasks.get (i). processname). Publicsourcedir;
Float size=float.valueof ((New File (dir). Length () *1.0))//Get application size if size is greater than one m, use m as unit, otherwise kb
Long date = new Date (new File (dir). LastModified ()). GetTime ();
System.out.println (Pinfo.getinfo (Runningtasks.get (i). processname). LoadIcon (PM));
Hashmap<string, object> map=new hashmap<string, object> ();
Map.put ("icon", Pinfo.getinfo (Runningtasks.get (i). processname). LoadIcon (PM));
Map.put ("Name", Pinfo.getinfo (Runningtasks.get (i). processname). Loadlabel (PM));
if (size>1024*1024)
Map.put ("info", size/1024/1024+ "MB");
Else
Map.put ("info", size/1024+ "KB");
Map.put ("PackageName", Runningtasks.get (i). processname.tostring ());//Get package name for back
List.add (map);
}
}
}catch (Exception ex)
{}
Simpleadapter listadapter=new Simpleadapter (this, list, r.layout.task_list, new string[]{"icon", "name", "info"}, new int []{r.id.icon,r.id.name,r.id.info});
Listview.setadapter (listadapter);//listview load recognizer
The following method is mainly used to refresh the picture because Pinfo.getinfo (Runningtasks.get (i). processname). LoadIcon (PM) Get picture cannot be displayed
Listadapter.setviewbinder (New Viewbinder () {
public boolean setviewvalue (View view,object data,string textrepresentation) {
if (view instanceof imageview && data instanceof drawable) {
ImageView iv= (imageview) view;
Iv.setimagedrawable ((drawable) data);
return true;
}
Else
return false;
}
});
Click event to add Item to ListView
Listview.setonitemclicklistener (New Onitemclicklistener () {
@Override
public void Onitemclick (adapterview<?> parent, view view, int position,
Long id) {
Get the item of the list to a HashMap
hashmap<?,? > map= (hashmap<?,? >) parent.getitematposition (position);
Get package name from map
String Packagename= (String) map.get ("PackageName");//Get package name from previous map
If we onclick the item then start the application
Open an application based on the package name
Intent intent=new Intent ();
Intent =pm.getlaunchintentforpackage (PackageName);
StartActivity (Intent);
Finish ()//unregister the application after opening the application
}
});
Add a long press event for the ListView item
Listview.setonitemlongclicklistener (New Onitemlongclicklistener () {
@Override
public Boolean Onitemlongclick (adapterview<?> parent, view view,
int position, long ID) {
Final hashmap<?,? > long_map= (hashmap<?,? >) parent.getitematposition (position);
New Alertdialog.builder (Managertasksactivity.this). Settitle ("Are you sure Close")
. Setpositivebutton ("Sure", new Onclicklistener () {
@Override
public void OnClick (Dialoginterface dialog, int which) {
Activitymanager am = (activitymanager) getsystemservice (Context.activity_service);
String Packagename= (String) long_map.get ("PackageName");
Base PackageName to kill Appliction
Kill an application based on the package name
Am.killbackgroundprocesses (PackageName);
Refash List
Refresh ListView
Loadlist (Managertasksactivity.this);
}
}). Setnegativebutton ("Cancle", new Onclicklistener () {
@Override
public void OnClick (Dialoginterface dialog, int which) {
}
). Show ();
return false;
}
});
}
}
Class PackageInfo mainly includes the ApplicationInfo getInfo (String name) method
Class PackageInfo {
Private list<applicationinfo> applist;
Public PackageInfo {
Get all package data
Packagemanager pm = Context.getapplicationcontext (). Getpackagemanager ();
Applist = Pm.getinstalledapplications (packagemanager.get_uninstalled_packages);
}
Public ApplicationInfo GetInfo (String name) {
if (name = = null) {
return null;
}
for (ApplicationInfo appinfo:applist) {
if (Name.equals (Appinfo.processname)) {
return appInfo;
}
}
return null;
}
}

XML file:
Lsit:

Copy Code code as follows:

<linearlayout xmlns:android= "Http://schemas.android.com/apk/res/android"
Android:layout_width= "Fill_parent"
android:layout_height= "Wrap_content"
android:orientation= "Horizontal"
>
<imageview
Android:id= "@+id/icon"
Android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
/>
<textview
Android:layout_width= "40dip"
android:layout_height= "40dip"
/>
<linearlayout
android:orientation= "Vertical"
Android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
>
<textview
Android:id= "@+id/name"
Android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
Android:textstyle= "Bold"
/>
<textview
Android:id= "@+id/info"
Android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
/>
</LinearLayout>
</LinearLayout>

Main

Copy Code code as follows:

<?xml version= "1.0" encoding= "Utf-8"?>
<linearlayout xmlns:android= "Http://schemas.android.com/apk/res/android"
Android:layout_width= "Fill_parent"
android:layout_height= "Fill_parent"
android:orientation= "Vertical" >
<listview
Android:id= "@+id/list_view"
Android:layout_width= "Fill_parent"
android:layout_height= "Wrap_content"
android:orientation= "Vertical"
></ListView>
</LinearLayout>

To add a permission in the manifest file:

Copy Code code as follows:

<uses-permission android:name= "Android.permission.RESTART_PACKAGES"/>

The main is the front of the Am.killbackgroundprocesses (PackageName) method to this permission.