(Android Studio) 请根据我的简单代码找到解决方案

Question

我使用教程编写了非常简单的代码。但是我遇到了一个意想不到的问题

无法应用 GestureOverlayView 中的

addOnGesturePerformedListener (android.gesture.GestureOverlayView.OnGesturePerformedListener)(com.example.customgestures.CustomGestureActivity)

在下一行的 'this'

gOverlay.addOnGesturePerformedListener(this);

这是我的全部代码

package com.example.customgestures;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.gesture.GestureLibraries;
import android.gesture.GestureLibrary;
import android.gesture.GestureOverlayView;
import android.gesture.GestureOverlayView.OnGesturePerformedListener;
import android.gesture.Prediction;
import android.widget.Toast;
import android.gesture.Gesture;
import java.util.ArrayList;

public class CustomGesturesActivity extends AppCompatActivity {

private GestureLibrary gLibrary;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_custom_gestures);

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

    GestureOverlayView gOverlay = (GestureOverlayView) findViewById(R.id.gOverlay);
    gOverlay.addOnGesturePerformedListener(this);
}

public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture)  {
    ArrayList<Prediction> predictions = gLibrary.recognize(gesture);
    if (predictions.size() > 0 && predictions.get(0).score >1.0) {
        String action = predictions.get(0).name;
        Toast.makeText(this, action, Toast.LENGTH_SHORT).show();
    }
}

}

谁能帮帮我？？

Answer 1

在 activity 上实现此接口：

 GestureOverlayView.OnGesturePerformedListener

它将解决您的问题。

(Android Studio) 请根据我的简单代码找到解决方案

(Android Studio) Please find a solution on my simple code

android

gesture