Databases
StackOverflow2013
Postsdbo
POAndroid Coin-Toss Simulator Lagging
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POAndroid Coin-Toss Simulator Lagging
    primarykey
    data
    text
    <p>Ok I am new to android programming but i have created an app as follows.</p> <pre><code>package com.michaelpeerman.probability; import android.app.Activity; import android.os.Bundle; import android.text.Editable; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import java.util.Random; public class ProbabilityActivity extends Activity { private EditText number; private Button submit; public void flipcoin(int numberint) { TextView result = (TextView)findViewById(R.id.result); int heads = 0; int tails = 0; for (int j = 0; j &lt; numberint; j++) { int i = 1 + new Random().nextInt(2); if (i == 1) heads++; if (i == 2) tails++; result.setText("heads : " + heads + "\ntails : " + tails); } } public void onCreate(Bundle paramBundle) { super.onCreate(paramBundle); setContentView(R.layout.main); submit = ((Button)findViewById(R.id.submit)); submit.setOnClickListener(new View.OnClickListener() { public void onClick(View paramView) { number = ((EditText)findViewById(R.id.number)); int numberint = Integer.parseInt(number.getText().toString()); flipcoin(numberint); } }); } } </code></pre> <p>But this runs incredibly slow compared to</p> <pre><code>package com.michaelpeerman.probability; import android.app.Activity; import android.os.Bundle; import android.text.Editable; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import java.util.Random; public class ProbabilityActivity extends Activity { public void onCreate(Bundle paramBundle) { super.onCreate(paramBundle); setContentView(R.layout.main); TextView result = (TextView)findViewById(R.id.result); int heads = 0; int tails = 0; for (int j = 0; j &lt; 50000; j++) { int i = 1 + new Random().nextInt(2); if (i == 1) heads++; if (i == 2) tails++; result.setText("heads : " + heads + "\ntails : " + tails); } } </code></pre> <p>I do not understand why this is. They are both using the same code except the first one lets you enter in a number and press submit before running the loop. Shouldnt they be the same speed? What can I do to speed it up?</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USmpeerman
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POAndroid Coin-Toss Simulator Lagging
      1. This table or related slice is empty.
      1. VTUpMod
    1. COFew tips, Don't create a `new Random()` inside the loop. Create it once.
      singulars
      1. POAndroid Coin-Toss Simulator Lagging
      1. USst0le
    2. COIs the looped action slower? Or is the overall app slower?
      singulars
      1. POAndroid Coin-Toss Simulator Lagging
      1. USAJcodez
    3. COI think I found the problem. The problem was i was having it set the text in the loop. I changed it so that it now sets it outside of the loop.
      singulars
      1. POAndroid Coin-Toss Simulator Lagging
      1. USmpeerman
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload