ArrayList Sublist Join Compare Loop Synchronize HashMap Sort Tree

public class MainActivity 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);
            
           Canvas c = new Canvas(b);
           c.drawRect(0, 0, 200, 200, paint);
           
           canvas.drawBitmap(b, 10,10, paint);
		}

	}
}

If your class extends AppCompatActivity

public class SearchableActivity extends AppCompatActivity

Check if linked appropriate library for:

import android.support.v4.view.MenuItemCompat;

import android.support.v7.app.AppCompatActivity;

import android.support.v7.widget.Toolbar;

Check if you have to properly sett SearchView in menu xml for onCreateOptionsMenu menu_main.xml

<menu xmlns:android="//schemas.android.com/apk/res/android" xmlns:app="//schemas.android.com/apk/res-auto"
xmlns:tools="//schemas.android.com/tools"
tools:context=".SearchableActivity">
<item


  android:id="@+id/menu_search_my"

        android:title="@string/menu_search"

        android:icon="@drawable/ic_menu_search"

        app:showAsAction="collapseActionView|ifRoom"

        app:actionViewClass="android.support.v7.widget.SearchView"

/></menu>

Check your SearchableActivity onCreateOptionsMenu

   @TargetApi(Build.VERSION_CODES.HONEYCOMB) @SuppressLint("NewApi") @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.

        getMenuInflater().inflate(R.menu.menu_main, menu);

        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {



            android.support.v7.widget.SearchView searchView = (android.support.v7.widget.SearchView)

                    MenuItemCompat.getActionView(menu.findItem(R.id.menu_search_my));

            SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);

            if(null!=searchManager ) {

                searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));

            }

            searchView.setIconifiedByDefault(false);

        }

        return true;

    }

If a button have focus, marquee will run.
Important:
android:singleLine="true"
android:ellipsize="marquee"
Optional:
android:marqueeRepeatLimit="1"

// main.xml
    <Button
        android:layout_width="150dip" 
        android:layout_height="wrap_content"
        android:text="My button with a long text for marquee as a example source code"
        android:singleLine="true"
        android:ellipsize="marquee"
        android:marqueeRepeatLimit="1"/>

Failed to rename directory ....
If using for update Android SDK manager,
try close Eclipse if is open.
Or change security settings of the folder which have problem.
Or disable antivirus for a moment.

How set JAVA path to Environment Variables on Windows (7)
Select Start menu > Computer > System Properties > Advanced System Settings(properties).
Then open Advanced tab > Environment Variables and add a new system variable JAVA_HOME that points to your JDK folder, for example

 C:\Program Files\Java\jdk1.8.0_05