int a = Math.abs(mToX - mFromX);
int b = Math.abs(mToY - mFromY);
double c = Math.sqrt(a * a + b * b);

//寫在安卓APP中的起跳
public class Jump {
private static final String TAG = "Jump";

private Context mContext;
private int mFromX = 0;
private int mFromY = 0;
private int mToX = 0;
private int mToY = 0;

/**
 * 每毫秒的距離
 */
private static final double MS_DISTANCE = 0.75;

private WindowManager wm;
private View mIndicatorView;
private View mIndicator;
private WindowManager.LayoutParams params;
private TextView mTv_time;

public Jump(Context context) {
 mContext = context;
 init();
}

private void init() {
 wm = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);

 mIndicatorView = LayoutInflater.from(mContext).inflate(R.layout.indicator, null, false);
 mIndicatorView.measure(0, 0);
 mIndicator = mIndicatorView.findViewById(R.id.indicator);
 mTv_time = mIndicatorView.findViewById(R.id.tv_time);
 mIndicatorView.findViewById(R.id.btnForm)
 .setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
  setForm();
 }
 });
 mIndicatorView.findViewById(R.id.btnTo)
 .setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
  setTo();
 }
 });


 mIndicatorView.setOnTouchListener(new View.OnTouchListener() {
 int startX;
 int startY;

 @Override
 public boolean onTouch(View v, MotionEvent event) {
 switch (event.getAction()) {
 case MotionEvent.ACTION_DOWN:
  startX = (int) event.getRawX();
  startY = (int) event.getRawY();
  break;

 case MotionEvent.ACTION_MOVE:
  int newX = (int) event.getRawX();
  int newY = (int) event.getRawY();
  int dx = newX - startX;
  int dy = newY - startY;
  params.x += dx;
  params.y += dy;
  wm.updateViewLayout(mIndicatorView, params);
  startX = (int) event.getRawX();
  startY = (int) event.getRawY();
  break;

 default:
  break;
 }
 return true;
 }
 });
 params = new WindowManager.LayoutParams();
 params.height = WindowManager.LayoutParams.WRAP_CONTENT;
 params.width = WindowManager.LayoutParams.WRAP_CONTENT;
 params.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
 | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
 params.format = PixelFormat.TRANSLUCENT;
 params.gravity = Gravity.TOP + Gravity.LEFT;
 params.type = WindowManager.LayoutParams.TYPE_SYSTEM_ERROR;
 wm.addView(mIndicatorView, params);
}


public void setForm() {
 int[] mLocation = new int[2];
 mIndicator.getLocationOnScreen(mLocation);
 int wOffset = mIndicator.getMeasuredWidth() / 2;
 int hOffset = mIndicator.getMeasuredHeight() / 2;
 mFromX = mLocation[0] + wOffset;
 mFromY = mLocation[1] + hOffset;
}

public void setTo() {
 int[] mLocation = new int[2];
 mIndicator.getLocationOnScreen(mLocation);
 int wOffset = mIndicator.getMeasuredWidth() / 2;
 int hOffset = mIndicator.getMeasuredHeight() / 2;
 mToX = mLocation[0] + wOffset;
 mToY = mLocation[1] + hOffset;

 int a = Math.abs(mToX - mFromX);
 int b = Math.abs(mToY - mFromY);
 double c = Math.sqrt(a * a + b * b);
 final int time = (int) (c / MS_DISTANCE);
 mTv_time.setText(String.valueOf(time));

 mFromX = 0;
 mFromY = 0;
 mToX = 0;
 mToY = 0;

 new Thread(new Runnable() {
 @Override
 public void run() {
 requestGet(time);
 }
 }).start();
}

private void requestGet(int time) {
 try {
 StringBuilder requestUrl = new StringBuilder("http://192.168.1.140:8080/jump/JumpTime").append("?").append("time=").append(time);
 // 新建一個URL對象
 URL url = new URL(requestUrl.toString());
 // 打開一個HttpURLConnection連接
 HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();
 // 設置連接主機超時時間
 urlConn.setConnectTimeout(5 * 1000);
 //設置從主機讀取數據超時
 urlConn.setReadTimeout(5 * 1000);
 // 設置是否使用緩存 默認是true
 urlConn.setUseCaches(true);
 // 設置為Post請求
 urlConn.setRequestMethod("GET");
 //urlConn設置請求頭信息
 //設置請求中的媒體類型信息。
 urlConn.setRequestProperty("Content-Type", "application/json");
 //設置客戶端與服務連接類型
 urlConn.addRequestProperty("Connection", "Keep-Alive");
 // 開始連接
 urlConn.connect();
 // 判斷請求是否成功
 if (urlConn.getResponseCode() == 200) {
 // 獲取返回的數據
 Log.e(TAG, "Get方式請求成功，result--->");
 } else {
 Log.e(TAG, "Get方式請求失敗");
 Log.e(TAG, urlConn.getResponseMessage());
 }
 // 關閉連接
 urlConn.disconnect();
 } catch (Exception e) {
 Log.e(TAG, e.toString());
 }
}
}

//標靶的布局文件
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="150dp">

<RelativeLayout
 android:layout_width="100dp"
 android:layout_height="wrap_content">

 <TextView
 android:id="@+id/tv_time"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_centerHorizontal="true"/>

 <RelativeLayout
 android:id="@+id/rl"
 android:layout_width="100dp"
 android:layout_height="100dp"
 android:layout_below="@id/tv_time">

 <View
 android:layout_width="match_parent"
 android:layout_height="1dp"
 android:layout_centerVertical="true"
 android:background="@android:color/black"/>

 <View
 android:layout_width="1dp"
 android:layout_height="match_parent"
 android:layout_centerHorizontal="true"
 android:background="@android:color/black"/>

 <View
 android:id="@+id/indicator"
 android:layout_width="30dp"
 android:layout_height="30dp"
 android:layout_centerInParent="true"
 android:background="@drawable/mid"/>

 </RelativeLayout>

 <Button
 android:id="@+id/btnForm"
 android:layout_width="50dp"
 android:layout_height="wrap_content"
 android:layout_below="@id/rl"
 android:onClick="setForm"
 android:text="form"
 android:textSize="8sp"/>

 <Button
 android:id="@+id/btnTo"
 android:layout_width="50dp"
 android:layout_height="wrap_content"
 android:layout_alignParentRight="true"
 android:layout_below="@id/rl"
 android:onClick="setTo"
 android:text="to"
 android:textSize="8sp"/>
</RelativeLayout>
</FrameLayout>

//Servlet文件
public class Jump extends HttpServlet {

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
 int time = Integer.parseInt(req.getParameter("time"));
 Runtime.getRuntime().exec("adb shell input swipe 100 100 100 100 " + time);
}
}