Terms Screen size, density, density independent pixel, resolution as a picture - pictogram.


Test your knowledge
Q: How to find out the phone screen size?
A: (By length of display diagonale in inch -  Not to measure a diagonal of device!!!)

Q: What resolution has 720 x 1280 display?
A: (921600 pixels)

Q: What does it mean "240 dpi" screen density?
A: (Display have density 240 x 240  dots - "Tri-color LED etc." - per every physical (real) square inch. If you have icon 240x240 pixels, this will just occupy an area of one square inch on the display.)

Q: Phone have screen density 240 dpi. Image for 160 dpi screen density have size 128x 128 pixels. What will be the size of the image for 240 dpi screen density?
A: (Calculate the virtual pixels size.   128 * (240/160)  =  192.  You have to resize image to new size 192 x 192 physical pixels and put into folder drawable-hdpi (high) ~240dpi  for phone with screen density 240 dpi. ) or use density independend pixels 128dp x 128dp.

 

 

Try this solution:

  				
AdView adView = new AdView(getApplicationContext());//in menu inflater getActivity()
adView.setAdUnitId("ca-app-pub-87***yourNumber");
adView.setAdSize(AdSize.BANNER); 					
LinearLayout linLay = (LinearLayout)findViewById(R.id.idReklamaLayout);
// Add the adView to it
linLay.addView(adView);
// Initiate a generic request to load it with an ad
if(Build.MANUFACTURER.equals("unknown")) {
// Emulator
AdRequest.Builder.addTestDevice("B3EEABB8EE11C2BE770B684D95219ECB"); // to get test ads on this device.
AdRequest adRequest = new AdRequest.Builder()
 .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)        // All emulators
 .addTestDevice("B3EEABB8EE11C2BE770B684D95219ECB")  // Emulator id you will get in the LogCat verbose
 .build();
			
adView.loadAd(adRequest);
	  			/* */
}else {
 // Not Emulator
// Initiate a generic request to load it with an ad
AdRequest adRequest = new AdRequest.Builder().build();   
adView.loadAd(adRequest);/**/
}

Table of usability phones with Android: (Our software)

October 2011	September 2011
Samsung Galaxy S2 10,90% Samsung Galaxy S 8,10% Samsung Galaxy Tab 7,00% Samsung Galaxy Mini 6,20% HTC Desire HD 4,10% Samsung Galaxy Ace 4,10% Samsung Galaxy S 4,00% Samsung Galaxy Fit 3,30% HTC Wildfire 3,20% SEMC Xperia X10 2,20%	Samsung Galaxy S2 13.8% Samsung Galaxy S 8.5% Samsung Galaxy Tab 7.4% Samsung Galaxy Mini 5.4% Samsung Galaxy S 4.0% HTC Desire HD 3.8% Samsung Galaxy Ace 3.8% HTC Wildfire 3.2% Samsung Galaxy Fit 3.1% SEMC Xperia X10 2.1%

Graph of usability Smartphone with Android - October 2011:

Samsung Galaxy S2 vs iPhone4 - video

Samsung Galaxy S2 vs iPhone4 - browsing, gaming, apps, performance, browser, fast, against, navigation, Sygic, apk, Android, iOS

Put extends PreferenceFragment API level 11 instead PreferenceActivity

public class SettingsActivity extends PreferenceFragment {
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      addPreferencesFromResource(R.xml.preferences);
  }
}

// or insert suppresswarning
public class SettingsActivity extends PreferenceActivity {
  @SuppressWarnings("deprecation")
	@Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      addPreferencesFromResource(R.xml.preferences);
  }
}

In your project AndroidManifest.xml you can set permission of Android application example source code.
For example if you want allow your application connection to INTERNET you have to permit this in AndroidManifest.xml.
WebViev show error: Website Not Available you have to permit INTERNET

    <uses-permission
        android:name="android.permission.INTERNET" />
    <uses-permission
        android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission
        android:name="android.permission.USE_CREDENTIALS" />
    <uses-permission
        android:name="android.permission.MANAGE_ACCOUNTS" />
    <uses-permission
        android:name="android.permission.AUTHENTICATE_ACCOUNTS" />
    <uses-permission
        android:name="android.permission.WRITE_SETTINGS" />
    <uses-permission
        android:name="android.permission.WRITE_SECURE_SETTINGS" />
    <uses-permission
        android:name="android.permission.READ_CONTACTS" />
    <uses-permission
        android:name="android.permission.WRITE_CONTACTS" />
    <uses-permission
        android:name="android.permission.READ_SYNC_STATS" />
    <uses-permission
        android:name="android.permission.READ_SYNC_SETTINGS" />
    <uses-permission
        android:name="android.permission.WRITE_SYNC_SETTINGS" />