java - 谷歌眼镜 gestureDetector 和 setBaseListener

Question

我想实现 gesturedetector 来为我的 Google Glass 设置 baselistener。 Android Studio 给我一个错误，说找不到符号 touchpad。我已经导入了相关的库。

setBaseListener 继续报错。

private GestureDetector createGestureDetector(Context context,  GestureDetector.OnGestureListener listener) {
    GestureDetector gestureDetector = new GestureDetector(context, listener);

    //Create a base listener for generic gestures
    gestureDetector.setBaseListener(new GestureDetector.BaseListener() {
        @Override
        public boolean onGesture(Gesture gesture) {
            if (gesture == Gesture.TAP) {
                // do something on tap
                return true;
            } else if (gesture == Gesture.TWO_TAP) {
                // do something on two finger tap
                return true;
            } else if (gesture == Gesture.SWIPE_RIGHT) {
                // do something on right (forward) swipe
                return true;
            } else if (gesture == Gesture.SWIPE_LEFT) {
                // do something on left (backwards) swipe
                return true;
            }
            return false;
        }
    });

Answer 1

您的代码格式有点不对，但您似乎正在将“gestureDetector”初始化为

GestureDetector.OnGestureListener listener) { GestureDetector gestureDetector = new GestureDetector(context, listener);

但是，根据 Glass GDK 文档，位于 https://developers.google.com/glass/develop/gdk/reference/com/google/android/glass/touchpad/GestureDetector

我只看到一个构造函数:public GestureDetector (Context context)

根据你在哪里构建这个，你可以尝试

GestureDetector gestureDetector = new GestureDetector(context);

或

GestureDetector gestureDetector = new GestureDetector(this);

具有以下导入:

import com.google.android.glass.touchpad.Gesture;
import com.google.android.glass.touchpad.GestureDetector;