It looks like what you really need is the ListActivity's OnResume(),
etc.
On Apr 19, 1:54 pm, Patrick Nako <nako...@gmail.com> wrote:
> Hello everyone, i'm in the process of creating a application manager/
> killer for my high school senior project. Unfortunately i'm running
> into the issue of my view not refreshing graphically with my updated
> list. The application killing works but the list refreshing after
> killing the application does not. My application seems to refresh the
> view when you hit the back button and re-opening my application but
> hitting the home button and re-opening my application doesn't.
>
> Note - All experimenting has been done on the emulator and not on my
> Droid yet.
>
> My Code:
>
> public class NTaskManager extends ListActivity implements
> DialogInterface.OnClickListener{
>
> //Recreation of RunningAppProcessInfo class that is able to return
> its process name
> public class NRunningAppProcessInfo extends
> ActivityManager.RunningAppProcessInfo{
>
> public
> NRunningAppProcessInfo(ActivityManager.RunningAppProcessInfo
> n){
> this.importance = n.importance;
> this.importanceReasonCode = n.importanceReasonCode;
> this.importanceReasonComponent =
> n.importanceReasonComponent;
> this.importanceReasonPid = n.importanceReasonPid;
> this.lru = n.lru;
> this.pid = n.pid;
> this.pkgList = n.pkgList;
> this.processName = n.processName;
> this.uid = n.uid;
> }
> public String toString(){
> return this.processName;
> }
> }
>
> //Pop up dialog box when user clicks on an item on the list
> public void onClick(DialogInterface dialog, int which){
> String f = String.valueOf(Process.myUid());
>
> if (which == AlertDialog.BUTTON_POSITIVE){
> searchAndKillTask();
> }
>
> else if(which == AlertDialog.BUTTON_NEGATIVE){
> Toast.makeText(this, f, Toast.LENGTH_LONG).show();
> }
> }
>
> //Declare variables and lists
> boolean hasNextCheck = true;
> private static final int REFRESH = 0;
> boolean isPrevious;
> boolean isNext;
> String taskToBeKilled = "";
>
> LinkedList<NRunningAppProcessInfo> processes; //List that will hold
> object names
> List<ActivityManager.RunningAppProcessInfo> x; //List containing
> objects that hold application information
> ActivityManager z; //Manages applications such as ending them
> ListIterator<ActivityManager.RunningAppProcessInfo> i; //List
> iterator
> ArrayAdapter<NRunningAppProcessInfo> processliststring;
> ListView lv;
> AlertDialog.Builder adb; //Alert dialog box builder for clicking of
> an item
>
> /** Called when the activity is first created. */
> @Override
> protected void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
>
> //Assign the linked list
> processes = new LinkedList<NRunningAppProcessInfo>();
>
> //Assign the activity manager
> z = (ActivityManager)getSystemService(ACTIVITY_SERVICE);
>
> //Give the list application information
> x = z.getRunningAppProcesses();
>
> //Add processes to linked list for list adapter and show it
> this.refreshList();
>
> //Create an alert dialog box...
> adb = new AlertDialog.Builder(this);
>
> //...If yes kill task...
> adb.setPositiveButton("Yes", this);
>
> //...If no do nothing
> adb.setNegativeButton("No", this);
>
> //When an item on the list is pressed
> lv.setOnItemClickListener(new OnItemClickListener() {
> public void onItemClick(AdapterView<?> parent, View view,
> int position, long id) {
>
> //Set text to ask if they want to kill the task
> adb.setMessage("Kill Task "+
> ((TextView)view).getText().toString() + "?");
>
> taskToBeKilled = ((TextView)view).getText().toString();
>
> //Show the alert dialog box
> adb.show();
> refreshList();
>
> }
> });
>
> }
>
> private void refreshList(){
> //Clear the list to start fresh
> processes.clear();
>
> //Refresh the list iterator
> i = x.listIterator();
>
> //Loop...
> do{
> //Check if there is something next on the list
> isNext = i.hasNext();
>
> //If there is...
> if(isNext == true){
> //Add the process to the process list
> processes.add(new NRunningAppProcessInfo(i.next()));
> }
> }while(isNext == true);//...while there is something next on
> the list
>
> //Set the list of strings to be used for the listview
> processliststring = new
> ArrayAdapter<NRunningAppProcessInfo>(this, layout.ntask_list,
> (List<NRunningAppProcessInfo>)processes);
> setListAdapter(processliststring);
>
> //View the list of processes
> lv = getListView();
> lv.setTextFilterEnabled(true);
>
> }
>
> private void searchAndKillTask(){
> RunningAppProcessInfo task;
> i = x.listIterator();
> hasNextCheck = i.hasNext();
>
> do{
> //Check if there is something next on the list
> isNext = i.hasNext();
>
> //If there is...
> if(isNext == true){
> //Check if the name matches the task to be killed
> task = i.next();
>
> if(task.processName == taskToBeKilled){
> android.os.Process.killProcess(task.pid);
> z.restartPackage(task.processName);
> }
>
> }
> }while(isNext == true);//...while there is something next on
> the list
>
> }
>
> /* Creates the menu items */
> public boolean onCreateOptionsMenu(Menu menu) {
> menu.add(0, REFRESH, 0, "Refresh")
> .setIcon(android.R.drawable.ic_menu_rotate);
>
> Toast.makeText(this, String.valueOf(hasNextCheck),
> Toast.LENGTH_SHORT);
>
> return true;
> }
>
> /* Handles item selections */
> public boolean onOptionsItemSelected(MenuItem item) {
> switch (item.getItemId()) {
> case REFRESH:
> refreshList();
> return true;
> }
> return false;
> }
>
> }
>
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