It's been a while. Am still trying to get myself acquainted with the Android platform, via Android programming apps...
So am asking experienced programmers in the house to share interesting beginner apps, that one can do to familiarize one's self wit the Android platform...
Your suggestions are most welcome! Thanks

I'm just few days old in Android, so this might have an obvious answer for experienced android programmers, but I can't seem to figure it out. The structure of the code snippet below is to add a Fragment to an Activity declaratively.Each time i run the code on my IDE using Genymotion as my android emulator, the program crashes.
Below is the code:

package com.example.dialog;

import android.os.Bundle;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.view.Menu;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.DialogInterface;
import android.view.View;
import android.widget.Toast;

@SuppressLint("NewApi"
public class MainActivity extends Activity {
static CharSequence[] items = { "Google", "Apple", "Microsoft" };
static boolean[] itemsChecked = new boolean [items.length];

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@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;
}
public void badAss(View v) {
MyDialogFragment fragment= new MyDialogFragment();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.add(R.id.list, fragment);
fragmentTransaction.commit();
}

public static class MyDialogFragment extends DialogFragment {
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setIcon(R.drawable.ic_launcher);
builder.setTitle("This is a dialog with some simple text...";
builder.setPositiveButton("OK",new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int whichButton)
{
Toast.makeText(getActivity(),"OK clicked!", Toast.LENGTH_SHORT).show();
}
}
);
builder.setNegativeButton("Cancel",new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int whichButton)
{
Toast.makeText(getActivity(),"Cancel clicked!", Toast.LENGTH_SHORT).show();
}
}
);
builder.setMultiChoiceItems(items, itemsChecked,new DialogInterface.OnMultiChoiceClickListener()
{
public void onClick(DialogInterface dialog,int which, boolean isChecked)
{
Toast.makeText(getActivity(),items[which] + (isChecked ? " checked!":" unchecked!",Toast.LENGTH_SHORT).show();
}
}
);
return builder.create();
}
}
}

with an XML layout as follows:

<LinearLayout 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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<fragment android:name="com.example.dialog.MainActivity$MyDialogFragment"
android:id="@+id/list"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="match_parent" />

<Button
android:id="@id/my_logo"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/display"
android:onClick="badAss" />
</LinearLayout>

I have been stucked here for 2days trying to resolve the issue and it seems i cant exactly find what is wrong.Can anyone help out. Thanks

Oga go learn html5 and phonegap, best 4 u dat way u can build for android, bb etc at d same tym

guy, I am learning xml so as to make it more simplier....u ve to start from the basis first: java programming fundamentals & xml

Tanks for your replies, but dis is not a "how to" thread.
I knw/am still learning most/all u guys have said.
What am asking for is: suggest Apps that a beginner can try to create for the Android platform, so as get himself "MORE familiar" with this platform...

Check the mtn nextapp competition thread on this board. You gonna find lot of apps for the android platform developed by NL members.


Or go to the store

wap.mtnonlineplay.com/

crystal9t: I'm just few days old in Android, so this might have an obvious answer for experienced android programmers, but I can't seem to figure it out. The structure of the code snippet below is to add a Fragment to an Activity declaratively.Each time i run the code on my IDE using Genymotion as my android emulator, the program crashes.
Below is the code:

package com.example.dialog;

import android.os.Bundle;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.view.Menu;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.DialogInterface;
import android.view.View;
import android.widget.Toast;

@SuppressLint("NewApi"
public class MainActivity extends Activity {
static CharSequence[] items = { "Google", "Apple", "Microsoft" };
static boolean[] itemsChecked = new boolean [items.length];

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@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;
}
public void badAss(View v) {
MyDialogFragment fragment= new MyDialogFragment();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.add(R.id.list, fragment);
fragmentTransaction.commit();
}

public static class MyDialogFragment extends DialogFragment {
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setIcon(R.drawable.ic_launcher);
builder.setTitle("This is a dialog with some simple text...";
builder.setPositiveButton("OK",new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int whichButton)
{
Toast.makeText(getActivity(),"OK clicked!", Toast.LENGTH_SHORT).show();
}
}
);
builder.setNegativeButton("Cancel",new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int whichButton)
{
Toast.makeText(getActivity(),"Cancel clicked!", Toast.LENGTH_SHORT).show();
}
}
);
builder.setMultiChoiceItems(items, itemsChecked,new DialogInterface.OnMultiChoiceClickListener()
{
public void onClick(DialogInterface dialog,int which, boolean isChecked)
{
Toast.makeText(getActivity(),items[which] + (isChecked ? " checked!":" unchecked!",Toast.LENGTH_SHORT).show();
}
}
);
return builder.create();
}
}
}

with an XML layout as follows:

<LinearLayout 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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<fragment android:name="com.example.dialog.MainActivity$MyDialogFragment"
android:id="@+id/list"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="match_parent" />

<Button
android:id="@id/my_logo"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/display"
android:onClick="badAss" />
</LinearLayout>

I have been stucked here for 2days trying to resolve the issue and it seems i cant exactly find what is wrong.Can anyone help out. Thanks

I'm new to android too. Your code seemed to be Ok, maybe u didn't declared it on your manifest.xml

crystal9t: I'm just few days old in Android, so this might have an obvious answer for experienced android programmers, but I can't seem to figure it out. The structure of the code snippet below is to add a Fragment to an Activity declaratively.Each time i run the code on my IDE using Genymotion as my android emulator, the program crashes.
Below is the code:

package com.example.dialog;

import android.os.Bundle;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.view.Menu;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.DialogInterface;
import android.view.View;
import android.widget.Toast;

@SuppressLint("NewApi"
public class MainActivity extends Activity {
static CharSequence[] items = { "Google", "Apple", "Microsoft" };
static boolean[] itemsChecked = new boolean [items.length];

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@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;
}
public void badAss(View v) {
MyDialogFragment fragment= new MyDialogFragment();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.add(R.id.list, fragment);
fragmentTransaction.commit();
}

public static class MyDialogFragment extends DialogFragment {
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setIcon(R.drawable.ic_launcher);
builder.setTitle("This is a dialog with some simple text...";
builder.setPositiveButton("OK",new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int whichButton)
{
Toast.makeText(getActivity(),"OK clicked!", Toast.LENGTH_SHORT).show();
}
}
);
builder.setNegativeButton("Cancel",new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int whichButton)
{
Toast.makeText(getActivity(),"Cancel clicked!", Toast.LENGTH_SHORT).show();
}
}
);
builder.setMultiChoiceItems(items, itemsChecked,new DialogInterface.OnMultiChoiceClickListener()
{
public void onClick(DialogInterface dialog,int which, boolean isChecked)
{
Toast.makeText(getActivity(),items[which] + (isChecked ? " checked!":" unchecked!",Toast.LENGTH_SHORT).show();
}
}
);
return builder.create();
}
}
}

with an XML layout as follows:

<LinearLayout 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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<fragment android:name="com.example.dialog.MainActivity$MyDialogFragment"
android:id="@+id/list"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="match_parent" />

<Button
android:id="@id/my_logo"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/display"
android:onClick="badAss" />
</LinearLayout>

I have been stucked here for 2days trying to resolve the issue and it seems i cant exactly find what is wrong.Can anyone help out. Thanks

Can you post a screenshot of your logcat output,( The error output)

When a app crashes, you check the LOGCAT, it will point you to the line number in your java code that's giving the error, usually something like Null pointer exception at com.packagename.classname.java and then a line number 90. yhu just check the classname of your package and check the line 90. App crashes due to errors, some minor as just forgetting to link in android manifest or in your xml layout build.

Has anyone used a tecno android for debugging applications and what drivers did you install to make d device recognizable.

I'm using a windows 8 PC and I'm stuck!