android - Android 中的手势识别

Question

我是 Android 新手，正在研究手势。我有一个关于如何识别文本的问题。当用户绘制一个必须识别的字母或数字并且必须打印在屏幕顶部时。我开始知道它可以通过 GestureOverlayView 来完成，但不知道如何实现它。

谁能帮我提供一些示例代码。

Answer 1

这两个链接会有帮助

GestureOverlay

GestureOverlayView

使用这个

public class YourClass extends Activity implements OnGesturePerformedListener {  
  private GestureLibrary mLibrary;   
mLibrary = GestureLibraries.fromRawResource(this, R.raw.gestures);  
 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); 
    Log.v("performed","performed");  
   // 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) {        
                 if(prediction.name.equalsIgnorecase("right")){    
                       //do you thing here//       
                }