Android example source code file (GesturesActivity.java)

This example Android source code file (GesturesActivity.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

activity, android, app, application, arraylist, gesture, gesturelibrary, gestureoverlayview, gesturesactivity, ongestureperformedlistener, os, override, prediction, ui

The GesturesActivity.java Android example source code

package com.example.android.gestures.demo;

import java.util.ArrayList;

import android.app.Activity;
import android.gesture.Gesture;
import android.gesture.GestureLibraries;
import android.gesture.GestureLibrary;
import android.gesture.GestureOverlayView;
import android.gesture.Prediction;
import android.gesture.GestureOverlayView.OnGesturePerformedListener;
import android.os.Bundle;
import android.widget.Toast;

public class GesturesActivity extends Activity implements OnGesturePerformedListener {
    private GestureLibrary mLibrary;

	@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        mLibrary = GestureLibraries.fromRawResource(this, R.raw.spells);
        if (!mLibrary.load()) {
        	finish();
        }

        GestureOverlayView gestures = (GestureOverlayView) findViewById(R.id.gestures);
        gestures.addOnGesturePerformedListener(this);
    }
	
	public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture) {
		ArrayList<Prediction> predictions = mLibrary.recognize(gesture);

		// We want at least one prediction
		if (predictions.size() > 0) {
			Prediction prediction = predictions.get(0);
			// We want at least some confidence in the result
			if (prediction.score > 1.0) {
				// Show the spell
				Toast.makeText(this, prediction.name, Toast.LENGTH_SHORT).show();
			}
		}
	}
}