android – 将GestureOverlayView添加到我的SurfaceView类,如何添加到视图层次结构？

我在后来的回答中被告知我必须将我在代码中创建的GestureOverlayView添加到我的视图层次结构中,而我不是100％如何做到这一点.以下是完整性的原始问题.

我希望我的游戏能够识别手势.我有一个很好的SurfaceView类,我做一个onDraw来绘制我的精灵,我有一个运行它来调用onDraw等的线程.

一切都很好.

我试图将GestureOverlayView添加到此,它只是无法正常工作.最后被黑客攻击它不会崩溃的地方,但这就是我所拥有的

public class Panel extends SurfaceView implements SurfaceHolder.Callback,         OnGesturePerformedListener  
{ 
public Panel(Context context)
{
    theContext=context;
    mLibrary = GestureLibraries.fromRawResource(context, R.raw.myspells);
    GestureOverlayView gestures = new GestureOverlayView(theContext);       
    gestures.setOrientation(gestures.ORIENTATION_VERTICAL);
    gestures.setEventsInterceptionEnabled(true);
    gestures.setGestureStrokeType(gestures.GESTURE_STROKE_TYPE_MULTIPLE);

    gestures.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
            LayoutParams.FILL_PARENT));

    //GestureOverlayView gestures = (GestureOverlayView) findViewById(R.id.gestures);
    gestures.addOnGesturePerformedListener(this);
 }
 ...
 ...
 onDraw...
surfaceCreated(..);
...
...


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(theContext, prediction.name, Toast.LENGTH_SHORT).show();
   }
  }
 }


}

永远不会调用onGesturePerformed.他们的例子在xml中有GestureOverlay,我没有使用它,我的活动很简单：

   @Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    Panel p = new Panel(this);
    setContentView(p);
}

所以我在这里丢失了一些丢失的信息,它没有调用onGesturePerformed,漂亮的黄色“你正在画一个手势”从未出现过.

解决方法:

这是一个很大的痛苦,但我终于找到了解决方案.在网上任何地方都没有完整的文档.我终于通过使用一个名为“FrameLayout”的东西来完成工作,然后在那里添加了surfaceview和手势视图.完成后,将FrameLayout设置为内容视图.

不幸的是,RomanGuy提供的上述解决方案由于某种原因似乎不起作用(或者可能,我根本无法使其工作).没有.addView()函数可用于SurfaceView类,就像常规视图一样.该功能对于ViewGroups是存在的,并且可以在我认为的除了surfaceview之外的任何东西上添加手势.

您的活动必须实现OnGesturePerformedListener接口才能使其生效.

您可以在我的网站上查看完整的教程和源代码：http://scanplaygames.com/?p=193

   package view.stack;

import game.core.GameView;

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.view.SurfaceView;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.Window;
import android.widget.FrameLayout;
import android.widget.Toast;

public class GestureActivity extends Activity implements OnGesturePerformedListener 
{
    protected GameView surfaceView;
    protected GestureOverlayView gestureOverlayView;
    protected GestureLibrary mLibrary;
    protected FrameLayout frameLayout;

    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);

        gestureOverlayView = new GestureOverlayView(this); 
        surfaceView        = new GameView(this);            
        frameLayout        = new FrameLayout(this);

        //gestureOverlayView.addView(surfaceView);    
        gestureOverlayView.setOrientation(gestureOverlayView.ORIENTATION_VERTICAL);
        gestureOverlayView.setEventsInterceptionEnabled(true);
        gestureOverlayView.setGestureStrokeType(gestureOverlayView.GESTURE_STROKE_TYPE_MULTIPLE);

        mLibrary = GestureLibraries.fromRawResource(this, R.raw.gestures);
        gestureOverlayView.addOnGesturePerformedListener(this);

        frameLayout.addView(surfaceView, 0);
        frameLayout.addView(gestureOverlayView,1);

        setContentView(frameLayout);
    }

    @Override
    public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture) 
    {
        // TODO Auto-generated method stub
        ArrayList<Prediction> predictions = mLibrary.recognize(gesture);

        // one prediction needed
        if (predictions.size() > 0)
        {
            Prediction prediction = predictions.get(0);

            // checking prediction
            if (prediction.score > 1.0) 
            {
                // and action
                Toast.makeText(GestureActivity.this, prediction.name,
                        Toast.LENGTH_SHORT).show();
            }
        }
    }    
}

标签：gesture,android,surfaceview
来源： https://codeday.me/bug/20190723/1518213.html