[AC Question]

I need to calculate the time taken to execute the sorting program given
below. I am new to android programming and I just found an article to
use TimingLogger but in the prompt when I type

adb logcat -v time SortTag:V *:E
to know the time of execution it gives me the following error.

Errors displayed

C:\Users\Dell\AndroidStudioProjects\Sort>adb shell setprop log.tag.SortTag
VERBOSE

C:\Users\Dell\AndroidStudioProjects\Sort>adb logcat -v time SortTag:V *:E

--------- beginning of main
--------- beginning of system
06-09 12:51:55.725 E/memtrack(11184): Couldn't load memtrack module
(No such file or directory)
06-09 12:51:55.725 E/android.os.Debug(11184): failed to load memtrack
module: -2
06-09 12:51:56.160 E/JavaBinder( 1232): !!! FAILED BINDER TRANSACTION !!!
06-09 12:51:56.183 E/InputDispatcher( 1232): channel '3bf07b77
com.example.android.sort/com.example.android.
sort.MainActivity (server)' ~ Channel is unrecoverably broken and will be
disposed!
06-09 12:52:05.459 E/memtrack(11290): Couldn't load memtrack module
(No such file or directory)
06-09 12:52:05.459 E/android.os.Debug(11290): failed to load
memtrack module: -2
06-09 12:52:05.527 E/art (11290): Thread attaching while runtime
is shutting down: Binder_1

Can anyone help me with this or let me know if any other method
can be used. I had used emulator for execution of the program

Program

MainActivity.java

package com.example.android.sort;

public class MainActivity extends ActionBarActivity {

TextView txtResult;
Button BRand;
EditText editTextName;

public double n;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editTextName = (EditText) findViewById(R.id.editTextName);

txtResult = (TextView) findViewById(R.id.txtResult);
BRand = (Button) findViewById(R.id.BRand);

BRand.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {
String res="";
int n=0;

TimingLogger timings = new TimingLogger("SortTag","Sort");

n=Integer.parseInt(editTextName.getText().toString());
Random rand = new Random();
int[] array = new int[n];
for (int i = 0; i < n; i++){
array[i]=i;
}

Collections.shuffle(Arrays.asList(array));

for (int i = 0; i < ( n - 1 ); i++)
{
for (int j = 0; j < n - i - 1; j++) {
if (array[j] < array[j+1]) {
int temp = array[j];
array[j] = array[j+1];
array[j+1] = temp;
}
}
}

for(int i=0;i<n;i++)
{
res+=String.valueOf(array[i])+"\n";
}
txtResult.setMovementMethod(new ScrollingMovementMethod());
txtResult.setText(res);
timings.dumpToLog();
};
});

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();

//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}

return super.onOptionsItemSelected(item);
}
}

[Rukbat]

Just have your program log the exact time at the start of the sort and at the end of the sort. Make the calls as single-line as you can, so you can comment them out once you've gotten the sort as short as possible.