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Leap year date time Java Android example


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GregorianCalendar cal = new GregorianCalendar(); Boolean b = cal.isLeapYear(2012); // true, Android example.



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;
        StringBuilder strBuild = new StringBuilder();
        
         GregorianCalendar cal = new GregorianCalendar();
         Boolean b = cal.isLeapYear(2012); // true
         strBuild.append("Is leap year 2012? " + b + "

"); b = cal.isLeapYear(2014); // false strBuild.append("Is leap year 2014? " + b + "
"); txtV.setText(strBuild); } }

397LW NO topic_id




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Linkify TextView clickable phone number url adress | linkify-textview-clickable-phone-number-url-adress


android:autoLink="all"

 <!-- text1 automatically linkifies things like URLs and phone numbers. -->
  <TextView
            android:id="@+id/text1"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:autoLink="all"
            android:text="@string/link_text_auto"
            />
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Get all ID from xml file for Android developers utility | get-all-id-from-xml-file-for-android-developers-utility


This software allow find all IDs from xml layout file source code and create variables with findViewById for onCreate, for onClick and load save preferences functions.
Get all ID is for Windows XP and higher.

2017,04,28
Download 1.0.2.0

[caption id="attachment_903" align="alignleft" width="300" caption="Get all ID from xml file for Android developers utility."]get-all-id-from-xml-file-android[/caption]
263

Eclipse failed to create the java virtual machine - Android | eclipse-failed-to-create-the-java-virtual-machine-android


Eclipse: failed to create the java virtual machine - message box

  1. Open folder with Eclipse.exe and find eclipse.ini file

  2. Replace -vmargs
    by your current real path of javaw.exe:
    -vm "c:\Program Files\Java\jdk1.7.0_07\bin\javaw.exe"




-startup
plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.200.v20120522-1813
-product
com.android.ide.eclipse.adt.package.product
--launcher.XXMaxPermSize
256M
-showsplash
com.android.ide.eclipse.adt.package.product
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vm "c:\Program Files\Java\jdk1.7.0_07\bin\javaw.exe” 
-Dosgi.requiredJavaVersion=1.6
-Xms40m
-Xmx768m
-Declipse.buildId=v21.1.0-569685
78

Goto labeled statement in Java example | goto-labeled-statement-in-java-example


Goto in for cycle Java example source code.
MainClass.java

public class MainClass {
	public static void main(String[] arg) {
		String[] arrayOfString = {"nothing", "Hello", "people"
				, "bye-bye", "hello", "world!", "end" };
		
	    OuterLoop: for (int i = 0;i<6; i++) {
	        for (int j = 0; j < arrayOfString.length; j++) {
	        	if (arrayOfString[j].equals("world!")) {
	            continue OuterLoop; // as goto from Csharp, or C/C++
	          }
	          System.out.println(arrayOfString[j]);
	          System.out.println(i);
	          if (i == 1) {
	        	  System.out.println("break");
	        	  
	        	  break OuterLoop;
	          }
	        }
	      }
		
	}
}
/*
nothing
0
Hello
0
people
0
bye-bye
0
hello
0
nothing
1
break
*/
57

Change TableRow background color if on row click Android example | change-tablerow-background-color-if-on-row-click-android-example


Change table row background color if user click on row Android example code.
MainActivity.java

public class MainActivity extends Activity {
Boolean bColorYellow = true;
TextView hTextView;
TableRow hTableRow;
@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        hTextView = (TextView)findViewById(R.id.idTextView);
        hTableRow = (TableRow)findViewById(R.id.idTableRow1);


        
        
    } // end onCreate
  
    
    public void myTableRowClickHandler(View view) {
		switch (view.getId()) {
		case R.id.idTableRow1:{
			
			if(bColorYellow){
			hTableRow.setBackgroundColor(Color.GREEN);
			bColorYellow = false;
			}
			else{
			hTableRow.setBackgroundColor(Color.YELLOW);
			bColorYellow = true;
			}
		}
		break;
		}
  }
}


main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="//schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >


<TableLayout android:layout_height="wrap_content" android:layout_width="fill_parent" android:id="@+id/tableLayout1">
    <TableRow android:id="@+id/idTableRow1" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:background="#5655AA"
    android:onClick="@string/myTableRowClick"
    android:focusable="true">
<TextView  
	android:id="@+id/idTextView"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
    
    </TableRow>
</TableLayout>
    
    
</LinearLayout>



strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="hello">Hello World!</string>
    <string name="app_name">TableRow</string>
    <string name="myTableRowClick">myTableRowClickHandler</string>
</resources>








Editace: 2011-09-29 20:44:21
Počet článků v kategorii: 397
Url:leap-year-date-time-java-android-example

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