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中查看