Android的手势，单次行程和放大器;多冲程产生不一致的结果

问题描述

我在这里时跟随手势教程一个很奇怪的问题：。

I'm having a really weird problem while following the Gestures tutorial here: http://developer.android.com/resources/articles/gestures.html.

4独特的手势手势Builder创建：+ - ×/

4 unique gestures are created in Gesture Builder: + - × /

添加和乘法是多中风。减去和除法是单中风。

Add and multiply are multi-stroke. Subtract and divide are single stroke.

该活动加载pre-内置GestureLibrary（R.raw.gestures），增加了一个OnGesturePerformedListener到GestureOverlayView，并在检测和放手势onGesturePerformed（）结束;执行

The Activity loads the pre-built GestureLibrary (R.raw.gestures), adds an OnGesturePerformedListener to the GestureOverlayView, and ends with onGesturePerformed() when a gesture is detected & performed.

在XML的活动的布局

<android.gesture.GestureOverlayView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/gestures"
android:layout_width="fill_parent" 
android:layout_height="fill_parent"

android:gestureStrokeType="multiple"
android:eventsInterceptionEnabled="true"
android:orientation="vertical"
/>

位于的onCreate（）

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

    GestureOverlayView gestures = (GestureOverlayView) findViewById(R.id.gestures);
    gestures.addOnGesturePerformedListener(this);

位于onGesturePerformed（）

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

的主要问题是在$ P $对内置手势没有被正确识别。例如，如果一个水平手势之后是垂直（加成）被从未执行onGesturePerformed（）。该方法的是如果垂直手势后跟一个水平调用。这是GesturesListDemo的行为太（<一个href=\"http://$c$c.google.com/p/apps-for-android/downloads/detail?name=GesturesDemos.zip&can=2&q=\"相对=nofollow> GesturesDemos.zip @ code.google.com ）。

The main problem is the pre-built gestures are not being recognized correctly. For example, onGesturePerformed() is never performed if a horizontal gesture is followed by a vertical (addition). The method is called if a vertical gesture is followed by a horizontal. This is how GesturesListDemo behaves too (GesturesDemos.zip @ code.google.com).

此外，predicted手势结束是不正确的姿态。添加被认为是减;如乘鸿沟;减去如添加。这是完全不一致的。

Furthermore, the predicted gesture ends up being the incorrect gesture. Add is recognized as subtract; multiply as divide; Subtract as add. It's completely inconsistent.

最后，加减手势通常共享类似prediction.score的，因为它们通过整个行程不同，这是奇怪的。

Finally, add and subtract gestures typically share similar Prediction.score's, which is weird since they differ by an entire stroke.

很抱歉的长期职位 - 想成为彻底。任何意见将大大AP preciated，谢谢大家。

Sorry about the long post -- wanted to be thorough. Any advice would be greatly appreciated, thanks all.

推荐答案

我意识到这是一个很老的问题，但它尚未回答，这可能帮助别人。我只是碰到了类似的问题，我的解决方案是使用 gesture.getStrokesCount（）单和多冲程手势之间进行区分。

I realize this is a really old question, but it hasn't been answered yet and this might help someone. I just came across a similar problem and my solution was to use gesture.getStrokesCount() to differentiate between single- and multi-stroke gestures.

例如：

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) {
        if (gesture.getStrokesCount() > 1) {
            // This is either add or multiply
        }
        else {
            // This is either subtract or divide
        }
    }
}

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