[TinyTut] - Read out the PID(s) (ProcessID) of Activity

plusminus · by **plusminus** » Tue Dec 18, 2007 11:03 pm

[align=center][TinyTut] - Read out the PID(s) (ProcessID) of Activity/Processes[/align]

What you learn: You will learn how to read out the PID (ProcessID) of the current Activity using myPid(); and of all Processes using getPids(...,...);.

Difficulty: 0.5 of 5 :roll:

Questions/Problems: Simply post below...

What it will look like:
[align=center]Nothing to see here...[/align]

Description: This is a 1-liner, not much to explain

Syntax: [ Download ] [ Hide ]

Using java Syntax Highlighting

import android.os.Process;
 
// ...
 
int myProcessID = Process.myPid();
Parsed in 0.031 seconds,  using GeSHi 1.0.8.4

There is a possibility to receive the PIDs of all Processes running on the Android-Device, called getPids(...):

Syntax: [ Download ] [ Hide ]

Using java Syntax Highlighting

// Receive all ProcessIDs running on the device
 
int[] pids = Process.getPids("/proc", null);
Parsed in 0.030 seconds,  using GeSHi 1.0.8.4

Just to see it returns the correct results run a "ps" on the adb shell using the following CommandLine-Code:

Code: Select all: adb shell ps

Regards,
plusminus

aleho · by **aleho** » Thu Mar 13, 2008 12:02 am

How is possibile to obtain information about processname, CPU utilization, ... only from PID?

sxjthefirst · by **sxjthefirst** » Thu Mar 13, 2008 10:19 am

Just wanted to add this here. This displays the array of process ids in a list.

Syntax: [ Download ] [ Hide ]

Using java Syntax Highlighting

        
       ...
 
        Process.getPids(arg0, arg1)
 
        int pids[]= Process.getPids("/proc", null);
 
        List<String> items = new ArrayList<String>() ;
 
        for (int i=0;i<pids.length;i++)
 
                items.add(String.valueOf(pids[i]));
 
        ArrayAdapter<String> pid_list = new ArrayAdapter<String>(this, R.layout.task_row, items); 
 
        this.setListAdapter(pid_list);
 
       ...
 
Parsed in 0.035 seconds,  using GeSHi 1.0.8.4

aleho · by **aleho** » Thu Mar 13, 2008 11:11 am

That information I already found, and there is more information available in /proc/[pid] directory:

but I have problem detect that the process is currently used by user. I need information which processes are in foreground and user is using them.

[TinyTut] - Read out the PID(s) (ProcessID) of Activity

[TinyTut] - Read out the PID(s) (ProcessID) of Activity

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