Android手势操作实例

package tjuci.edu.dl; //Download by http://www.codefans.net import java.util.ArrayList; import android.app.Activity; import android.app.AlertDialog; import android.gesture.Gesture; import android.gesture.GestureLibraries; import android.gesture.GestureLibrary; import android.gesture.GestureOverlayView; import android.gesture.GestureOverlayView.OnGesturePerformedListener; import android.gesture.Prediction; import android.os.Bundle; import android.widget.ArrayAdapter; import android.widget.Toast; public class GestureRecogniseSampleActivity extends Activity { GestureOverlayView gestureView; GestureLibrary gestureLibrary; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); gestureView = new GestureOverlayView(this); gestureLibrary = GestureLibraries.fromFile("/mnt/sdcard/mygestures"); if(gestureLibrary.load()){ Toast.makeText(GestureRecogniseSampleActivity.this, "装载成功", Toast.LENGTH_SHORT).show(); }else{ Toast.makeText(GestureRecogniseSampleActivity.this, "装载失败", Toast.LENGTH_SHORT).show(); } gestureView.addOnGesturePerformedListener(new OnGesturePerformedListener() { @Override public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture) { // TODO Auto-generated method stub ArrayList<Prediction> prediction = gestureLibrary.recognize(gesture); ArrayList<String> list = new ArrayList<String>(); for(Prediction p: prediction){ String showMsg = "与手势[" + p.name + "]相似度为：" + p.score; list.add(showMsg); } if(list.size() > 0){ ArrayAdapter aa = new ArrayAdapter(GestureRecogniseSampleActivity.this, android.R.layout.simple_dropdown_item_1line, list.toArray()); new AlertDialog.Builder(GestureRecogniseSampleActivity.this).setAdapter(aa, null).setPositiveButton("确定", null).show(); }else{ Toast.makeText(GestureRecogniseSampleActivity.this, "没有找到匹配的手势", Toast.LENGTH_SHORT).show(); } } }); } }