Every fragment must have an empty constructor Android Java Class

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You have to add constructor!


    public static class YourFragment extends Fragment {
    //you have to add constructor!!!!!	
    public YourFragment(){}

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
            View view = inflater.inflate(R.layout.activity_main, container, false);

            return view;
        }   

    }

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Další témata ....(Topics)

295

Shuffle array int string Java Android | shuffle-array-int-string-java-android


String [] arOfStrings = {"one", "two", "three"};
List<String> mListOfStrings = new ArrayList<String>(Arrays.asList(arOfStrings));
Collections.shuffle(mListOfstrings);
String str = mListOfStrings.get(2);// 2 is index of pozition an element


int [] arOfInt = {1, 2, 3};
List<Integer> mListOfInt = new ArrayList<Integer>(Arrays.asList(arOfInt));
Collections.shuffle(mListOfInt);

217

Throwing multiple exceptions Java | throwing-multiple-exceptions-java

Throws multiple exceptions Java example source code


	public void callFc() 
	throws IndexOutOfBoundsException, ArithmeticException
	{
         // my code for example:
         String[] sArray = {"aa","bb"};
         String str = sArray[5]; // IndexOutOfBoundsException

         int n = 5 / 0; // ArithmeticException
        }

public void someFC (){
try{
     callFc();
    }
 catch(IndexOutOfBoundsException e){
      Log.e("TAG", e.toString());
  }
 catch(ArithmeticException e2){ 
      Log.e2("TAG",e2.toString()); 
  }
}

Show keyboard | show-keyboard

Show keyboard Android phone apps development example source code.


// ActivityClass.java
InputMethodManager showSoftInput;
Button hBtnKeyboardShow ;
//onCreate
showSoftInput = (InputMethodManager)this.getSystemService(Context.INPUT_METHOD_SERVICE);

hBtnKeyboardShow = (Button)findViewById(R.id.btnKeyboardShow);
hBtnKeyboardShow.setOnClickListener(myButtonListener);
// END onCreate

//button listener
private OnClickListener myButtonListener = new OnClickListener() {
     public void onClick(View v) {
     	 try {
     		 showSoftInput.getInputMethodList();
                 showSoftInput.toggleSoftInput(showSoftInput.SHOW_FORCED, 0);	
		} catch (Exception e) {
			Log.e("Keyboard show ", e.getMessage());
			
		}
     }
};

288

Eclipse - Java was started but returned exit code=13 | eclipse-java-was-started-but-returned-exit-code13

Windows 7 64-bit version.
Eclipse 64-bit - Java was started but returned exit code=13

Solution:
Download and install 64-bit version of JDK
//www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html

Shuffle List ArrayList Collections Java example | shuffle-list-arraylist-collections-java-example

Add and shuffle elements in LinkedList or ArrayList Java basic example.


import java.util.Collections;
import java.util.LinkedList;
import java.util.List;

public class MainClass {
	public static void main(String[] arg) {
		String[] arrayOfString = {"nothing", "Hello", "people"
				, "bye-bye", "hello", "world!", "End" };
		   List<String> arrayList = new LinkedList<String>();
            for(String s: arrayOfString)
		     arrayList.add(s);

		    Collections.shuffle(arrayList);

		    System.out.println(arrayList);
		    
		  }
}
/*
[hello, world!, bye-bye, nothing, people, End, Hello]
*/

Editace: 2014-09-10 10:40:35
Počet článků v kategorii: 397
Url:every-fragment-must-have-an-empty-constructor-android-java-class

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