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Two boolean as one parameter value in function Java


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boolean fc(boolean b) {
	return b;
}// end fc
		boolean bA = true;
		boolean bB = true;
		boolean bC = bA || bB; // true

		bA = true;
		bB = false;
		bC = bA || bB; // true

		bA = false;
		bB = true;
		bC = bA || bB; // true

		bA = false;
		bB = false;
		bC = bA || bB; // false
		
			if(!fc(bB||bA))
			System.out.println("false"); // false
                        else 
			System.out.println("true"); 



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84

Hashtable find value by key Java Android example | hashtable-find-value-by-key-java-android-example


Hashtable find value by key Java Android basic example.


import java.util.Hashtable;

public class MainClass {
	public static void main(String[] arg) {
		
		// english;germany dictionary
		String[] arrayOfString = { "one;eine", "two;zwei", "three;drei" };

	    Hashtable hashTable = new Hashtable();
	    for(String s: arrayOfString){
	    	String[] array = s.split(";");
	    	String sKey ="", sValue="";
	    	if(array.length > 1){
	    	sKey = array[0]; sValue = array[1];
	    		hashTable.put(sKey, sValue);
	    	}
	    }

       // check if key exists 	    
	   if( hashTable.containsKey("two")){
		System.out.print("two = " + hashTable.get("two"));
	   }
	    
	}
}
/*
two = zwei
 */
189

Invalid proguard configuration file path Android Eclipse Error | invalid-proguard-configuration-file-path-android-eclipse-error


Invalid proguard configuration file path
C:\documents\my_android_projects\my_project\proguard.cfg does not exist or is not a regular file

Solution:
Check if exist file proguard.cfg in your project on the path C:\docum.........
If not exist, copy a file proguard.cfg from other project or create file proguard.cfg and insert
this source code to file and save this file.



-optimizationpasses 5
-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-dontpreverify
-verbose
-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*

-keep public class * extends android.app.Activity
-keep public class * extends android.app.Application
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep public class * extends android.content.ContentProvider
-keep public class * extends android.app.backup.BackupAgentHelper
-keep public class * extends android.preference.Preference
-keep public class com.android.vending.licensing.ILicensingService

-keepclasseswithmembernames class * {
    native <methods>;
}

-keepclasseswithmembers class * {
    public <init>(android.content.Context, android.util.AttributeSet);
}

-keepclasseswithmembers class * {
    public <init>(android.content.Context, android.util.AttributeSet, int);
}

-keepclassmembers class * extends android.app.Activity {
   public void *(android.view.View);
}

-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}

-keep class * implements android.os.Parcelable {
  public static final android.os.Parcelable$Creator *;
}



From more details see:
//developer.android.com/guide/developing/tools/proguard.html
128

How get Drawable Android example | how-get-drawable-android-example


InputStream, getResources(),openRawResource()

 java.io.InputStream is;
is = context.getResources().openRawResource(R.drawable.my_image);

Drawable mDrawable = context.getResources().getDrawable(R.drawable.button);
mDrawable.setBounds(150, 20, 300, 100);


Drawable[] mDrawables;
int[] resIDs = new int[] {
                R.drawable.btn_ok,
                R.drawable.btn_storno,
                R.drawable.btn_help
            };
            mDrawables = new Drawable[resIDs.length];
            Drawable prev = mDrawable;
            for (int i = 0; i < resIDs.length; i++) {
                mDrawables[i] = context.getResources().getDrawable(resIDs[i]);
                mDrawables[i].setDither(true);
                addToTheRight(mDrawables[i], prev);
                prev = mDrawables[i];
            }


274

Eclipse Error parsing the sdk Android | eclipse-error-parsing-the-sdk-android


[2013-07-06 16:10:29 - SDK Manager] [SDK Manager] Error: Error parsing the sdk.
[2013-07-06 16:10:29 - SDK Manager] [SDK Manager] Error: Failed to create C:\Program Files\android\sdk\add-ons.
[2013-07-06 16:10:29 - SDK Manager] [SDK Manager] Error: Unable to parse SDK content.

You have to create add-ons folder as admin of PC
140

Create Bitmap with Linear Gradient Android example | create-bitmap-with-linear-gradient-android-example



public class ApokusActivity extends Activity {
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(new SampleView(this));
	}

	private static class SampleView extends View {

		// CONSTRUCTOR
		public SampleView(Context context) {
			super(context);
			setFocusable(true);

		}
		@Override
		protected void onDraw(Canvas canvas) {
			Paint paint = new Paint();
			
			canvas.drawColor(Color.GREEN);
            
            Bitmap b = Bitmap.createBitmap(200, 200, Bitmap.Config.ALPHA_8);
             paint.setColor(Color.BLUE);
            
            Shader mShader = new LinearGradient(0, 0, 100, 70, new int[] {
                    Color.RED, Color.GREEN, Color.BLUE },
                    null, Shader.TileMode.MIRROR);  // CLAMP MIRROR REPEAT
            Canvas c = new Canvas(b);
            paint.setShader(mShader);
            //c.drawCircle(60, 60, 30, paint);
            c.drawRect(0, 0, 200, 200, paint);
            canvas.drawBitmap(b, 10,10, paint);
		}

	}
}


linear gradient bitmap android example


Editace: 2013-02-04 20:29:14
Počet článků v kategorii: 397
Url:two-boolean-as-one-parameter-value-in-function-java

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