最終更新:2013-01-22 (火) 12:58:18 (4109d)  

HelloIOIO
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package ioio.examples.hello;

import ioio.lib.api.DigitalOutput;
import ioio.lib.api.exception.ConnectionLostException;
import ioio.lib.util.BaseIOIOLooper;
import ioio.lib.util.IOIOLooper;
import ioio.lib.util.android.IOIOActivity;
import android.os.Bundle;
import android.widget.ToggleButton;

/**
 * This is the main activity of the HelloIOIO example application.
 * 
 * It displays a toggle button on the screen, which enables control of the
 * on-board LED. This example shows a very simple usage of the IOIO, by using
 * the {@link IOIOActivity} class. For a more advanced use case, see the
 * HelloIOIOPower example.
 */
public class MainActivity extends IOIOActivity {
	private ToggleButton button_;

	/**
	 * Called when the activity is first created. Here we normally initialize
	 * our GUI.
	 */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		button_ = (ToggleButton) findViewById(R.id.button);
	}

	/**
	 * This is the thread on which all the IOIO activity happens. It will be run
	 * every time the application is resumed and aborted when it is paused. The
	 * method setup() will be called right after a connection with the IOIO has
	 * been established (which might happen several times!). Then, loop() will
	 * be called repetitively until the IOIO gets disconnected.
	 */
	class Looper extends BaseIOIOLooper {
		/** The on-board LED. */
		private DigitalOutput led_;

		/**
		 * Called every time a connection with IOIO has been established.
		 * Typically used to open pins.
		 * 
		 * @throws ConnectionLostException
		 *             When IOIO connection is lost.
		 * 
		 * @see ioio.lib.util.AbstractIOIOActivity.IOIOThread#setup()
		 */
		@Override
		protected void setup() throws ConnectionLostException {
			led_ = ioio_.openDigitalOutput(0, true);
		}

		/**
		 * Called repetitively while the IOIO is connected.
		 * 
		 * @throws ConnectionLostException
		 *             When IOIO connection is lost.
		 * 
		 * @see ioio.lib.util.AbstractIOIOActivity.IOIOThread#loop()
		 */
		@Override
		public void loop() throws ConnectionLostException {
			led_.write(!button_.isChecked());
			try {
				Thread.sleep(100);
			} catch (InterruptedException e) {
			}
		}
	}

	/**
	 * A method to create our IOIO thread.
	 * 
	 * @see ioio.lib.util.AbstractIOIOActivity#createIOIOThread()
	 */
	@Override
	protected IOIOLooper createIOIOLooper() {
		return new Looper();
	}
}

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