Apps Newbie App Dev not even getting developer.android.com's tutorials right

[bcbotha]

Hi there.

I'm a newbie to app dev so any help/guidance and tutorials are helpful.

Thanks

 

[bcbotha]

Hi agian,

I am trying to work my way through the tuts on developer.android.com's site but I am getting errors when my code seems to be the same. Help would be great.

I am going through the tut for building your first app and adding a new activity. This is my code.


This is my MainActivity.java:
[HIGH]package com.brendan.try_this;

import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;


public class MainActivity extends ActionBarActivity {

public final static String EXTRA_MESSAGE = "com.brendan.Try_this.MESSAGE";

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

//Called when the user clicks the send button

public void sendMessage(View view)
{
Intent intent = new Intent(this, DisplayMessageActivity.class);
EditText editText = (EditText)findViewById(R.id.fname);
EditText editText2 = (EditText)findViewById(R.id.lname);
String message = editText.getText().toString() + editText2.getText().toString();
intent.putExtra(EXTRA_MESSAGE, message);
startActivity(intent);

}

}



@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.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();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
[/HIGH]


This is my activity_main.xml:
[HIGH]<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
androidaddingBottom="@dimen/activity_vertical_margin"
androidaddingLeft="@dimen/activity_horizontal_margin"
androidaddingRight="@dimen/activity_horizontal_margin"
androidaddingTop="@dimen/activity_vertical_margin"
tools:context="com.brendan.try_this.MainActivity" >

<EditText
android:id="@+id/fname"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/userinfo"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:ems="10"
android:inputType="textPersonName"
android:text="First Name" >

<requestFocus />
</EditText>

<EditText
android:id="@+id/lname"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/fname"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:ems="10"
android:inputType="textPersonName"
android:text="Last Name" />

<Button
android:id="@+id/btn1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/lname"
android:layout_centerHorizontal="true"
android:layout_marginTop="60dp"
android:text="Submit"
androidnClick="sendMessage" />

<TextView
android:id="@+id/userinfo"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="15dp"
android:text="Please provide your info"
android:textAppearance="?android:attr/textAppearanceLarge" />

</RelativeLayout>
[/HIGH]

Here is my new activity:
[HIGH]package com.brendan.try_this;

import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.MenuItem;
import android.widget.TextView;

public class DisplayMessageActivity extends ActionBarActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_display_message);

//Get message from intent
Intent intent = getIntent();
String message = intent.getStringExtra(MainActivity.EXTRA_MESSAGE);

//Create the text view
TextView textView = new TextView(this);
textView.setTextSize(40);
textView.setText(message);

//Set text View as activity layout
setContentView(textView);

}


@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();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
[/HIGH]

and it's xml:
[HIGH]<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
androidaddingBottom="@dimen/activity_vertical_margin"
androidaddingLeft="@dimen/activity_horizontal_margin"
androidaddingRight="@dimen/activity_horizontal_margin"
androidaddingTop="@dimen/activity_vertical_margin"
tools:context="com.brendan.try_this.DisplayMessageActivity" >

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />

</RelativeLayout>
[/HIGH]

Please can someone show me where I am going wrong or what I missed out. I have to use Eclipse to develop my apps for a Long-Distance course I am studying, so I'm doing this on my own.

Thanks

 

[cDubU]

It would probably be best not to provide everything from your project. Just give the error and the line it is pointing to. As of now I don't know where to start looking, but I can tell you that unless your are supporting really old versions of android, you don't need to import and use the ActionBarActivity. Just use activity.

 

[TonyHine]

you don't need to import and use the ActionBarActivity. Just use activity.

As another struggling beginner, that's a very useful piece of information thank you.

 

[bcbotha]

Thanks, Will try it out.

 

[bcbotha]

Thanks, It worked