基于java实现的支持8方位的滑动手势检测和缩放手势检测+源码+开发文档+代码解析（毕业设计&课程设计&项目开发）

# GestureDetectorView 支持8方位的滑动手势检测和缩放旋转手势检测  ### 示例如下： * xml: ``` <com.junmeng.gdv.GestureDetectorView android:id="@+id/gdv_gesture" android:layout_width="match_parent" android:layout_height="match_parent" android:clickable="true" android:visibility="visible" /> ``` * java: ``` binding.gdvGesture.setOnGestureListener(new GestureDetectorView.OnGestureListener() { /** * @param gesture 手势 * @param factor 缩放手势表示缩放因子，滑动手势表示速率，旋转手势表示角度 */ @Override public void onGesture( int gesture, float factor) { switch (gesture) { case GestureDetectorView.GESTURE_ACTION_UP: Toast.makeText(MainActivity.this, "action up", Toast.LENGTH_SHORT).show(); break; case GestureDetectorView.GESTURE_ACTION_DOWN: Toast.makeText(MainActivity.this, "action down", Toast.LENGTH_SHORT).show(); break; case GestureDetectorView.GESTURE_ACTION_CANCEL: Toast.makeText(MainActivity.this, "action cancel", Toast.LENGTH_SHORT).show(); break; case GestureDetectorView.GESTURE_SLIDE_UP: Toast.makeText(MainActivity.this, "up", Toast.LENGTH_SHORT).show(); break; case GestureDetectorView.GESTURE_SLIDE_DOWN: Toast.makeText(MainActivity.this, "down", Toast.LENGTH_SHORT).show(); break; case GestureDetectorView.GESTURE_SLIDE_LEFT: Toast.makeText(MainActivity.this, "left", Toast.LENGTH_SHORT).show(); break; case GestureDetectorView.GESTURE_SLIDE_RIGHT: Toast.makeText(MainActivity.this, "right", Toast.LENGTH_SHORT).show(); break; case GestureDetectorView.GESTURE_SLIDE_LEFT_UP: Toast.makeText(MainActivity.this, "left_up", Toast.LENGTH_SHORT).show(); break; case GestureDetectorView.GESTURE_SLIDE_LEFT_DOWN: Toast.makeText(MainActivity.this, "left_down", Toast.LENGTH_SHORT).show(); break; case GestureDetectorView.GESTURE_SLIDE_RIGHT_UP: Toast.makeText(MainActivity.this, "right_up", Toast.LENGTH_SHORT).show(); break; case GestureDetectorView.GESTURE_SLIDE_RIGHT_DOWN: Toast.makeText(MainActivity.this, "right_down", Toast.LENGTH_SHORT).show(); break; case GestureDetectorView.GESTURE_SCALE_ZOOMIN: Toast.makeText(MainActivity.this, "zoomin:"+factor, Toast.LENGTH_SHORT).show(); break; case GestureDetectorView.GESTURE_SCALE_ZOOMOUT: Toast.makeText(MainActivity.this, "zoomout:"+factor, Toast.LENGTH_SHORT).show(); break; case GestureDetectorView.GESTURE_ROTATE_CLOCKWISE: Toast.makeText(MainActivity.this, "clockwise:"+factor, Toast.LENGTH_SHORT).show(); break; case GestureDetectorView.GESTURE_ROTATE_ANTICLOCKWISE: Toast.makeText(MainActivity.this, "anticlockwise:"+factor, Toast.LENGTH_SHORT).show(); break; } } }); ``` ### 说明 此库除系统提供的detector,另外加了两个detector可用： * GestureDetector（系统） * ScaleGestureDetector（系统） * MoveGestureDetector（新加） * RotateGestureDetector（新加） ### 如果需要用到此库,做法如下： * Add it in your root build.gradle at the end of repositories: ``` allprojects { repositories { ... maven { url "https://jitpack.io" } } } ``` * and then,add the dependecy: ``` dependencies { compile 'com.github.huweijian5:GestureDetectorView:latest_version' } ``` * 其中latest_version请到[releases](https://github.com/huweijian5/GestureDetectorView/releases)中查看