Unable to resolve id for attribute id Graphical layout editor Eclipse error

If using Wordpress:
- update Wordpress
- download Plugin Any Mobile Theme Switcher and upzip into yourweb/wp-content/plugins/
- open Wordpress Dachboard on yourweb
- set defalut theme for desktop (Appearance - Theme)
- set themes for mobile users Settings - Any Mobile Theme Switcher for example Twentyfourteen theme
- preview page
- test page on Mobile Friendly Test

Foreach in Java basic example source code.

MainClass.java

public class MainClass {
	public static void main(String[] arg) {
		String[] arrayOfString = { "Hello", "people", "hello", "world!" };

		for (String s : arrayOfString)
			System.out.println(s);

	}
}

Try this:
- check names of drawables (file name must contain only abc...xyz 012...789 _ . in Resources folder ,
names have to start with lower case
MyImage.jpg == problem ,
names with space
my image.jpg == problem,
names with -
my-image.png == problem)
- check duplicate names with other extension ( my_image.jpg - my_image.png makes the problem)
- restart Android Studio
- if problem persist:
- check c:\Users\me\AndroidStudioProjects\myProject\myModule\build\intermediates\res\merged\debug\ drawable folder for corupted names or delete ALL drawable folders
- synk projekt, rebuild projekt
- if problem persist:
- restart Android Studio, wait for complete closure of the Android Studio!

Create file restartADB.bat in folder
c:\Program Files\Android\android-sdk-windows\platform-tools\
Write into restartADB.bat this code:

adb kill-server && adb start-server
pause

Save restartADB.bat file.
If you want restart adb.exe server, run restartADB.bat by double click on icon.


Next example:

1. Open Total Commander


2. Open folder with adb.exe usually in
   c:\Program Files\Android\android-sdk-windows\platform-tools\


3. Put into command line command: adb kill-server && adb start-server and press Enter

[caption id="attachment_778" align="alignleft" width="300" caption="ADB server restart by command line"][/caption]

Try restart ADB if this or similar errors:
Emulator] emulator: emulator window was out of view and was recentred

Calendar cal = new GregorianCalendar(), int year = cal.get(Calendar.YEAR),
ERA, MONTH, DAY_OF_MONTH, DAY_OF_WEEK, Android example code.

public class MainActivity extends Activity {
TextView txtV;
	Context cntx;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        txtV = (TextView)findViewById(R.id.idLabel);
        cntx = this;
        Calendar cal = new GregorianCalendar();

     int era = cal.get(Calendar.ERA);  // 0 B.C. before Christ, 1 Anno Domini              
     txtV.setText(txtV.getText() +"

" +  era);
     int year = cal.get(Calendar.YEAR);   // 2011          
     txtV.setText(txtV.getText() +"

" +  year);
     int month = cal.get(Calendar.MONTH);    // 0 is Januar       
     txtV.setText(txtV.getText() +"

" +  month);
     int day = cal.get(Calendar.DAY_OF_MONTH); // 1 to 31     
     txtV.setText(txtV.getText() +"

" +  day);
     int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK); // 1=Sunday, 2=Monday ...
     txtV.setText(txtV.getText() +"

" +  dayOfWeek);
        
    }
}