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How get bitmap dimension without loading Android example


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Bitmap Width, Height without memory allocation:

BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeResource(getResources(), R.id.myimage, options);
// now opts.outWidth and opts.outHeight are the dimension of the
// bitmap, even though Bitmap is null
int imageHeight = options.outHeight;
int imageWidth = options.outWidth;
String imageType = options.outMimeType;

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39

How setup color coloring syntax code highlight highlighting in Eclipse editor Android example | how-setup-color-syntax-highlight-in-eclipse-android-example


How setup color coloring highlight highlighting syntax font size and family in Eclipse Java and XML editor Android example
Java editor

  1. Go to Eclipse menu Window -> Preferences

  2. Doubleclick on Java

  3. Double click on Editor

  4. Select Java, Javadocs or Comments and setup color and font

  5. Font size and family change from Window->Preferences-> General->Appearance->Colors and Fonts


  6. Press OK for saving changes


xml editor
xml editor double click in Preferences dialog on xml -> Editor -> Syntax coloring
[caption id="attachment_627" align="alignleft" width="297" caption="Eclipse editor syntax color settings"]eclipse-color-syntax-highlight-settings[/caption]
90

Map TreeMap get values to array Java Android example | map-treemap-get-values-to-array-java-android-example



import java.util.Map;
import java.util.TreeMap;

public class MainClass {
	public static void main(String[] arg) {

		// english;germany dictionary
		String[] arrayOfString = { "one;eine", "two;zwei", "two sets of;zwei"
				, "three;drei", "four;vier" };

		Map<String, String> map = new TreeMap<String, String>();

		for (String s : arrayOfString) {
			String[] array = s.split(";");
			String sKey = "", sValue = "";
			if (array.length > 1) {
				sKey = array[0];
				sValue = array[1];
				map.put(sKey, sValue);
			}
		}
    Object[] objectArrayOfValues = map.values().toArray();
	for (int i = 0; i < objectArrayOfValues.length; i++) {
		System.out.println(objectArrayOfValues[i]);
	}
		 
		
	}// end main

}
/*
vier
eine
drei
zwei
zwei
 */
354

Start Activity from list - launches other activities from list | start-activity-from-list-launches-other-activities-from-list


Activities launcher

public class MainActivity extends ListActivity {
    private class Sample {
        private CharSequence title;
        private Class<? extends Activity> activityClass;

        public Sample(int titleResId, Class<? extends Activity> activityClass) {
            this.activityClass = activityClass;
            this.title = getResources().getString(titleResId);
        }

        @Override
        public String toString() {
            return title.toString();
        }
    }

    private static Sample[] mSamples;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Instantiate the list of samples.
        mSamples = new Sample[]{
                new Sample(R.string.title_first_app, FirstActivity.class),
                new Sample(R.string.title_second_app, SecondActivity.class),
                new Sample(R.string.title_third_app, ThirdActivity.class),
        };

        setListAdapter(new ArrayAdapter<Sample>(this,
                android.R.layout.simple_list_item_1,
                android.R.id.text1,
                mSamples));
    }

    @Override
    protected void onListItemClick(ListView listView, View view, int position, long id) {
        // Launch the sample associated with this list position.
        startActivity(new Intent(MainActivity.this, mSamples[position].activityClass));
    }
}

225

Eclipse custom skin GUI color theme | eclipse-custom-skin-gui-color


Eclipse make own color of toolbars, windows, status bar etc.
https://github.com/jeeeyul/eclipse-themes/wiki/Alternative-Install

eclipse-custom-skin-gui-2.jpg

eclipse-custom-skin-gui.png
300

Do not hardcode /data/ use Context.getFilesDir().getPath() | do-not-hardcode-data-use-context-getfilesdir-getpath



// warning
private static String DB_PATH =  "/data/data/cz.okhelp.german_czech_phrases/databases/";

// OK
   public DataBaseHelper(Context context) {	 
    	super(context, DB_NAME, null, 1);
        this.myContext = context;
        // OK
         DB_PATH = context.getFilesDir().getParentFile().getPath()
              + "/databases/";
    }


Editace: 2013-12-09 13:00:05
Počet článků v kategorii: 397
Url:how-get-bitmap-dimension-without-loading-android-example

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