[android-beginners] Application crashing
Hello,
I am trying to make a small To do list application. The application
keeps crashing on and saying, the application closed and please try
again. The message also has force close option.
Here is the code, does anyone has an idea what's wrong?
Thanks
package com.todolist;
import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnKeyListener;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;
public class todolist extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle icicle) {
// Inflate your view
setContentView(R.layout.main);
// Get references to UI widgets
ListView myListView = (ListView)findViewById(R.id.myListView);
final EditText myEditText =
(EditText)findViewById(R.id.myListView);
// Create the array list of to do items
final ArrayListString todoItems = new ArrayListString();
// Create the array adapter to bind the array to the listview
final ArrayAdapterString aa; aa = new
ArrayAdapterString(this,
android.R.layout.simple_list_item_1,
todoItems);
// Bind the array adapter to the listview.
myListView.setAdapter(aa);
myEditText.setOnKeyListener(new OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN)
if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
todoItems.add(0, myEditText.getText().toString());
aa.notifyDataSetChanged(); myEditText.setText();
return true;
} return false;
} });
}
}
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Re: [android-beginners] Application crashing
On Wed, Jun 23, 2010 at 1:28 PM, Varun Khanduja varunkhand...@gmail.com wrote: I am trying to make a small To do list application. The application keeps crashing on and saying, the application closed and please try again. The message also has force close option. Here is the code, does anyone has an idea what's wrong? Use adb logcat, DDMS, or the DDMS perspective in Eclipse to examine the Java stack trace associated with your crash, so you can see where in your code the problem occurs. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy _The Busy Coder's Guide to *Advanced* Android Development_ Version 1.6 Available! -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
Re: [android-beginners] Application crashing
Hi,
Your onCreate method is not calling the default:
super.onCreate( icicle );
Also, I would wrap the body of the code in a try{ } catch( Exception ex
) clause.
Hope this helps,
Sy
Varun Khanduja wrote:
Hello,
I am trying to make a small To do list application. The application
keeps crashing on and saying, the application closed and please try
again. The message also has force close option.
Here is the code, does anyone has an idea what's wrong?
Thanks
package com.todolist;
import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnKeyListener;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;
public class todolist extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle icicle) {
// Inflate your view
setContentView(R.layout.main);
// Get references to UI widgets
ListView myListView = (ListView)findViewById(R.id.myListView);
final EditText myEditText =
(EditText)findViewById(R.id.myListView);
// Create the array list of to do items
final ArrayListString todoItems = new ArrayListString();
// Create the array adapter to bind the array to the listview
final ArrayAdapterString aa; aa = new
ArrayAdapterString(this,
android.R.layout.simple_list_item_1,
todoItems);
// Bind the array adapter to the listview.
myListView.setAdapter(aa);
myEditText.setOnKeyListener(new OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN)
if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
todoItems.add(0, myEditText.getText().toString());
aa.notifyDataSetChanged(); myEditText.setText();
return true;
} return false;
} });
}
}
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Re: [android-beginners] Application crashing
One other thing to mention... These groups are not only great for posting questions but also for searching through them to find other posts with the same problem or question that may already have an answer. In particular, your question is one that has been answered many times over and a quick search for Force Close or Crash probably would have given you several posts with the same answers that Mark and Simon gave. Not only does it prevent the group from getting bloated with duplicate questions, it can also help improve your development time because you don't have to constantly wait for responses to your questions. Thanks, Justin -- There are only 10 types of people in the world... Those who know binary and those who don't. -- On Wed, Jun 23, 2010 at 11:41 AM, Mark Murphy mmur...@commonsware.comwrote: On Wed, Jun 23, 2010 at 1:28 PM, Varun Khanduja varunkhand...@gmail.com wrote: I am trying to make a small To do list application. The application keeps crashing on and saying, the application closed and please try again. The message also has force close option. Here is the code, does anyone has an idea what's wrong? Use adb logcat, DDMS, or the DDMS perspective in Eclipse to examine the Java stack trace associated with your crash, so you can see where in your code the problem occurs. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy _The Busy Coder's Guide to *Advanced* Android Development_ Version 1.6 Available! -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.comandroid-beginners%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Application Crashing OutOfMemory .Restructuring Help Needed
Hi guys, I have an application which fetches data from server and shows it in different lists in my application. I used the adb shell procrank command to find out the memory usage of my application It takes 10 mb for the UI (I have a single Activity ,but many layout files), And the data which comes from the server is stored in memory arrays for logical representation on UI (As well as database)and it takes 6 mb of the memory .So application's runtime size reaches to 16 mb and then many a times its crashing after that with OutOfMemoryException. Another major problem is that later for the next client release , the data comming from the server will be around 12 mb.. :( :( So i need to do a major restructuring in the App.I beleive that i cannot increase my App size from 16 mb to more So my question here is , can i have two seperate applications , one of which will fetch the data from the server and keep it in memory as well as database and another App will be used for showing the UI and it will do an inter Application communication to fetch the data and display it on the UI in this App. So the 1st App wil be a backgrond App which will handle Server communication as well as data storage , the second App will start this 1st App . Thanks,Alok. -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en To unsubscribe from this group, send email to android-beginners+unsubscribegooglegroups.com or reply to this email with the words REMOVE ME as the subject.
