Android手势库

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">

<LinearLayout
android:layout_weight="1"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="0dp">
<ImageView
android:id="@+id/my_gesture"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="match_parent" />
<ImageView
android:id="@+id/old_gesture"<--!找到手势库中的对应手势显示在这个ImageView上-->
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="match_parent" />

</LinearLayout>

<android.gesture.GestureOverlayView
android:background="#191919"
android:id="@+id/draw_gestrue"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:gestureStrokeType="multiple"
android:gestureStrokeWidth="5"
android:gestureColor="#ffb200"
android:fadeOffset="3000"
/>
</LinearLayout>

下面是一个可以书写的文本区域，调用的是Android中的gestureOverlayView

/**
* 手势库
*/
public class MainActivity extends AppCompatActivity {

private ImageView mShowImage,mOldImage;
private GestureOverlayView mGestureDraw;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main3);
//        GestureLibraries.fromFile();
mShowImage = (ImageView) findViewById(R.id.my_gesture);
mOldImage = (ImageView) findViewById(R.id.old_gesture);
mGestureDraw = (GestureOverlayView) findViewById(R.id.draw_gestrue);
mGestureDraw.addOnGesturePerformedListener(
new GestureOverlayView.OnGesturePerformedListener() {
@Override
public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture) {
GestureLibrary library = GestureLibraries.fromFile(Environment.
getExternalStorageDirectory().getAbsolutePath() + "/gesture");

if(library.load()){
Log.i("gesture","加载");
}else{
Log.i("gesture","未加载");
}
Bitmap bitmap = gesture.toBitmap(200, 200, 10, Color.RED);
mShowImage.setImageBitmap(bitmap);
//将我们绘制的手势 与 手势库中 存储的手势进行对比 查询出 最相近的手势
ArrayList<Prediction> recognize = library.recognize(gesture);
if(recognize.size()>0){
Toast.makeText(MainActivity3.this,
"找到手势"+recognize.size(),Toast.LENGTH_SHORT).show();
for (Prediction prediction:recognize ) {
if( prediction.score>5.0f){//相识度的判断
//                            ArrayList<Gesture> gestures = library.getGestures(prediction.name);
//                            Bitmap bitmap1 = gestures.get(0).toBitmap(200, 200, 10, Color.RED);
//                            mOldImage.setImageBitmap(bitmap1);
Toast.makeText(MainActivity.this,
"手势相似度"+ prediction.score,Toast.LENGTH_SHORT).show();
}
}
}else{
Toast.makeText(MainActivity.this,
"没找手势"+recognize.size(),Toast.LENGTH_SHORT).show();
}
//手势添加到手势类库
library.addGesture("gesture", gesture);
//保存手势
library.save();
}
});
}
}

/**
* 演示了手势的方法 手势方法的调用时机
*/
public class MainActivity extends AppCompatActivity implements GestureDetector.OnGestureListener{

private GestureDetector mGesture;

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

/**
* 1、创建一个手势
*/
mGesture = new GestureDetector(this,this);
}

/**
* 2、将我们的Touch事件 传递给我们的手势
* @param event
* @return
*/
@Override
public boolean onTouchEvent(MotionEvent event) {
return mGesture.onTouchEvent(event);
}

/**
* 摁下
* @param e
* @return
*/
@Override
public boolean onDown(MotionEvent e) {
Log.i("gesture","onDown");
return false;
}

/**
* 按下未移动
* @param e
*/
@Override
public void onShowPress(MotionEvent e) {
Log.i("gesture","onShowPress");
}

/**
* 轻轻点
* @param e
* @return
*/
@Override
public boolean onSingleTapUp(MotionEvent e) {
Log.i("gesture","onSingleTapUp");
return false;
}

/**
* 滑动
* @param e1        起点 并且这个起点 不移动
* @param e2        结束点 这点是变化的
* @param distanceX     e2 到 上一个e2的X距离
* @param distanceY     e2 到 上一个e2的Y距离
* @return
*/
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
Log.i("gesture","onScroll e1:X "+e1.getX()+
" :Y "+e1.getY()+"   e2:X "+e2.getX()+
" :Y "+e2.getY()+" distanceX:"+distanceX +
" distanceY:"+distanceY);
return false;
}

/**
* 长摁
* @param e
*/
@Override
public void onLongPress(MotionEvent e) {
Log.i("gesture","onLongPress");
}

 
3ff0
; /**
* 快速滑动
* @param e1    摁下位置
* @param e2    结束位置
* @param velocityX     e1 到 e2 的X速率
* @param velocityY     e1 到 e2 的Y速率
* @return
*/
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
Log.i("gesture","onFling e1:X "+e1.getX()+
" :Y "+e1.getY()+"   e2:X "+e2.getX()+
" :Y "+e2.getY()+" velocityX:"+velocityX +
" velocityY:"+velocityY);
return false;
}
}