Schogini

It is considered as unreliable because it can sometimes be null. The documentation states that it “can change upon factory reset”. This string can also be altered on a rooted phone.

String androidID = Secure.getString(getContentResolver(), Secure.ANDROID_ID);

<ScrollView
android:layout_width=”fill_parent”
android:layout_height=”wrap_content”
android:fillViewport=”true”>
<LinearLayout
android:layout_width=”fill_parent”
android:layout_height=”fill_parent”>
<TextView android:text=”sample text ”
android:id=”@+id/tv”
android:layout_width=”fill_parent”
android:layout_height=”fill_parent”>
</TextView>
</LinearLayout>
</ScrollView>

private class DownloadWebPageTask extends AsyncTask {
		@Override
		protected String doInBackground(String... urls) {
			String response = "";
			for (String url : urls) {
				DefaultHttpClient client = new DefaultHttpClient();
				HttpGet httpGet = new HttpGet(url);
				try {
					HttpResponse execute = client.execute(httpGet);
					InputStream content = execute.getEntity().getContent();

					BufferedReader buffer = new BufferedReader(
							new InputStreamReader(content));
					String s = "";
					while ((s = buffer.readLine()) != null) {
						response += s;
					}

				} catch (Exception e) {
					Toast.makeText(getApplicationContext(),"Some Error Occurred! " + e.getMessage(), Toast.LENGTH_LONG).show();
				}
			}
			return response;
		}

		@Override
		protected void onPostExecute(String result) {
			textView.setText(result);
			Toast.makeText(getApplicationContext(),"Loading WebPage Complete", Toast.LENGTH_LONG).show();
		}
	}

	public void readWebpage(View view) {
		DownloadWebPageTask task = new DownloadWebPageTask();
		task.execute(new String[] { "http://www.google.com" });

	}

public void showAlert(){
		CCDirector.sharedDirector().getActivity().runOnUiThread(new Runnable() {
		    public void run() {
		    	AlertDialog.Builder builder = new AlertDialog.Builder(CCDirector.sharedDirector().getActivity());
		    	builder.setMessage("Are you sure you want to exit?")
		    	       .setCancelable(false)
		    	       .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
		    	           public void onClick(DialogInterface dialog, int id) {
		    	        	   CCDirector.sharedDirector().getActivity().finish();
		    	           }
		    	       })
		    	       .setNegativeButton("No", new DialogInterface.OnClickListener() {
		    	           public void onClick(DialogInterface dialog, int id) {
		    	                dialog.cancel();
		    	           }
		    	       });
		    	AlertDialog alert = builder.create();
		    	alert.show();
		    }
		});
	}

For implementing a custom gridview we have to create a custom adapter.

 public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        GridView gridview = (GridView) findViewById(R.id.gridview);
        gridview.setAdapter(new MyAdapter(this));
        gridview.setNumColumns(4);
    }

  public class MyAdapter extends BaseAdapter {

    	private Context mContext;

		public MyAdapter(Context c) {
			mContext = c;
		}

		@Override
		public int getCount() {
			return mThumbIds.length;
		}

		@Override
		public Object getItem(int arg0) {
			return mThumbIds[arg0];
		}

		@Override
		public long getItemId(int arg0) {
			return arg0;
		}

		@Override
		public View getView(int position, View convertView, ViewGroup parent) { 

			View grid;

			if(convertView==null){
				grid = new View(mContext);
				LayoutInflater inflater=getLayoutInflater();
				grid=inflater.inflate(R.layout.mygrid_layout, parent, false);
			}else{
				grid = (View)convertView;
			}

			ImageView imageView = (ImageView)grid.findViewById(R.id.image);
			imageView.setImageResource(mThumbIds[position]);

			return grid;
		}

	}

In the onCreate() you have to add following code:

GridView gridview = (GridView) findViewById(R.id.gridview);
gridview.setAdapter(new ImageAdapter(this));

gridview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
Toast.makeText(dashboard.this, "" + position, Toast.LENGTH_SHORT).show();
}
});

Next is to include ImageAdapter class:

class ImageAdapter extends BaseAdapter {

private Context mContext;

public ImageAdapter(Context c) {
mContext = c;
}

public int getCount() {
return mThumbIds.length;
}

public Object getItem(int position) {
return null;
}

public long getItemId(int position) {
return 0;
}

// create a new ImageView for each item referenced by the Adapter
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
if (convertView == null) {  // if it’s not recycled, initialize some attributes
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(85, 85));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8, 8, 8, 8);
} else {
imageView = (ImageView) convertView;
}

imageView.setImageResource(mThumbIds[position]);
return imageView;
}

// references to our images
private Integer[] mThumbIds = { R.drawable.img1, R.drawable.img2   };
}

** You have to copy img1.png and img2.png in the drawable folder **

Create a fonts folder in assets folder and put  TTF fonts in it. After that you have to add following two line to include that fonts:

TextView tv=(TextView)findViewById(R.id.custom);
Typeface face=Typeface.createFromAsset(getAssets(), "fonts/HandmadeTypewriter.ttf");
tv.setTypeface(face);

That’s it!

The WLAN MAC Address string, is a unique identifier that you can use as a device id. Before you read it, you will need to make sure that your project has the android.permission.ACCESS_WIFI_STATE permission or the WLAN MAC Address will come up as null.

 WifiManager wm = (WifiManager)getSystemService(Context.WIFI_SERVICE);
String WLANMAC = wm.getConnectionInfo().getMacAddress();

it is possible to find two devices with the same Pseudo-Unique ID, but the chances in real world applications are negligible

String pseudoUniqueID =
        	Build.BOARD.length()%10+ Build.BRAND.length()%10 +
        	Build.CPU_ABI.length()%10 + Build.DEVICE.length()%10 +
        	Build.DISPLAY.length()%10 + Build.HOST.length()%10 +
        	Build.ID.length()%10 + Build.MANUFACTURER.length()%10 +
        	Build.MODEL.length()%10 + Build.PRODUCT.length()%10 +
        	Build.TAGS.length()%10 + Build.TYPE.length()%10 +
        	Build.USER.length()%10 ; //13 digits

The IMEI: only for Android devices with Phone use:

TelephonyManager TelephonyMgr = (TelephonyManager)getSystemService(TELEPHONY_SERVICE);
String szImei = TelephonyMgr.getDeviceId(); // Requires READ_PHONE_STATE

This requires adding a permission in AndroidManifest.xml, and users will be notified upon installing your software: android.permission.READ_PHONE_STATE. The IMEI is unique for your phone and it looks like this: 114985038630335 (unless you have a pre-production device with an invalid IMEI like 0000000000000).