Android Gesture手势源码

package com.example.android.gesture; 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.OnGestureListener; import android.gesture.GestureOverlayView.OnGesturePerformedListener; import android.gesture.GestureOverlayView.OnGesturingListener; import android.os.Bundle; import android.util.Log; import android.view.MotionEvent; import android.widget.TextView; import android.widget.Toast; public class HelloGesture extends Activity { //HelloGesture主程序 @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); TextView textView = (TextView)findViewById(R.id.TextView01); textView.setText(R.string.app_description); //GestureLibrary-登录Gesture的库 final GestureLibrary gl = GestureLibraries.fromPrivateFile(this, "gestures"); //GestureOverlayView-Gesture输入的透明性重叠层 GestureOverlayView gov = (GestureOverlayView)findViewById(R.id.GestureOverlayView01); //OnGestureListener监听功能 gov.addOnGestureListener(new OnGestureListener() { public void onGestureStarted(GestureOverlayView overlay, MotionEvent event) { Log.v("Gesture", "onGestureStarted"); } public void onGestureEnded(GestureOverlayView overlay, MotionEvent event) { Log.v("Gesture", "onGestureEnded"); } public void onGestureCancelled(GestureOverlayView overlay, MotionEvent event) { Log.v("Gesture", "onGestureCancelled"); } public void onGesture(GestureOverlayView overlay, MotionEvent event) { Log.v("Gesture", "onGesture"); } }); //OnGesturePerformedListener监听功能 gov.addOnGesturePerformedListener(new OnGesturePerformedListener() { public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture) { Log.v("Gesture", "onGesturePerformed"); Log.v("Gesture", "id:" + gesture.getID()); Log.v("Gesture", "length:" + gesture.getLength()); Log.v("Gesture", "describeContents:" + gesture.describeContents()); if (gl.getGestureEntries().size() == 0) { gl.addGesture("First", gesture); gl.save(); } else { //调用GestureLibrary.recognize(gesture)取得predictions ArrayList<Prediction> predictions = gl.recognize(gesture); Log.v("Gesture", "predictions.size:" + predictions.size()); for (Prediction p : predictions) { Log.v("Gesture", "Prediction name:" + p.name + " score:" + p.score); Toast.makeText(HelloGesture.this, "score:" + p.score, Toast.LENGTH_SHORT).show(); } } } }); //OnGesturingListener监听功能 gov.addOnGesturingListener(new OnGesturingListener() { public void onGesturingEnded(GestureOverlayView overlay) { Log.v("Gesture", "onGesturingEnded"); } public void onGesturingStarted(GestureOverlayView overlay) { Log.v("Gesture", "onGesturingStarted"); } }); } }