Android newbie's problem

[Goran Markovic]

Hi, I have just start to develop android, and I just cannot start my Hello World application.
I have followed instructions about android installation, I have changed several Eclipse IDE's, but still, when I press f11 to compile, it 'does' some job int he background, activate my virtual device, but wont to behave just as it should!
Only " Android . . . " is displayed on the screen, which mean that my class isn't 'loaded', somehow.
This is sample class :

package test.and;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;


public class TestAppActiv extends Activity {
Button button1;
EditText txtbox1,txtbox2;
TextView tv;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
txtbox1= (EditText) findViewById(R.id.txtbox1);
button1 = (Button) findViewById(R.id.button1);
tv = (TextView) findViewById(R.id.lbl1);
txtbox2= (EditText) findViewById(R.id.txtbox2);
button1.setOnClickListener(new Clicker());
}
class Clicker implements Button.OnClickListener
{
public void onClick(View v)
{
String a,b;
Integer vis;
a = txtbox1.getText().toString();
b = txtbox2.getText().toString();
vis = Integer.parseInt(a)+Integer.parseInt(b);
tv.setText(vis.toString());
}
}
}

And, also main.xml file, which reflect contains xml representation of display window :
main.xml :

<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout
android:id="@+id/widget35"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
>
<EditText
android:id="@+id/txtbox1"
android:layout_width="145px"
android:layout_height="40px"
android:text="EditText"
android:textSize="18sp"
android:layout_x="75px"
android:layout_y="54px"
>
</EditText>
<EditText
android:id="@+id/txtbox2"
android:layout_width="144px"
android:layout_height="40px"
android:text="EditText"
android:textSize="18sp"
android:layout_x="75px"
android:layout_y="109px"
>
</EditText>
<Button
android:id="@+id/button1"
android:layout_width="106px"
android:layout_height="36px"
android:text="Button"
android:layout_x="88px"
android:layout_y="224px"
>
</Button>
<TextView
android:id="@+id/lbl1"
android:layout_width="141px"
android:layout_height="wrap_content"
android:text="TextView"
android:layout_x="76px"
android:layout_y="166px"
>
</TextView>
</AbsoluteLayout>

then, strings.xml :

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="hello">Hello World, TestAppActiv!</string>
    <string name="app_name">TestApp</string>
</resources>

AndroidManifest.xml :

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="test.and"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".TestAppActiv"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>


</manifest> 

and default.properties file :

# This file is automatically generated by Android Tools.
# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
# 
# This file must be checked in Version Control Systems.
# 
# To customize properties used by the Ant build system use,
# "build.properties", and override values to adapt the script to your
# project structure.

# Project target.
target=android-3

Just as I said, I did install everything I needed (SDK, ADT plugin, etc...), but it still wont work
I appreciate any help!
Thanks

[Ankit Garg]

Slobodan at a glance everything looks fine to me. How long did you want for the simulator to boot up?? It can take 2-3 minutes to boot on old machines...

[Goran Markovic]

Hi Ankit.
It takes only a few seconds, and emulator appears, displaying - "ANDROID_" (where underscore continuously blink). Emulator doesn't respond to any button pressing.
Now I am downloading MOTODEV IDE, to try it.
Just as I said, I have downloaded several Eclipse distribution, and permute at any way I could (SDK version, different emulators,etc..) but it wond work

[Goran Markovic]

I have downloaded MOTODEV, but the behavior is the same.. I just do not understand....

[David O'Meara]

sounds like a problem with the virtual device and not necessarily the application.
Have you tried creating a new one to test the app?

[Goran Markovic]

It breakthrough somehow!
Do not how, but it starts working...I was messing with various type of emulators, and it works (just need to figure out what tpe of emulator I chose, because I tried every )
Thanks for your time and patience...

Regards

[James Elsey]

I've found similar behaviour, sometimes I can load up my application, sometimes I can't

One thing I will suggest, is don't rely on F11 to run it. Its best (in my experience) to right click your project and select "Run as Android", as when I used F11 Eclipse was trying to do something else

Good luck!