안드로이드 점프 카운트하기

안드로이드 점프 카운트하기

 

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

    <TextView
        android:id="@+id/tv_time"
        android:textSize="22sp"
        android:text="time"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />

    <TextView
        android:id="@+id/tv_jumpcount"
        android:textSize="22sp"
        android:text="jump_count"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />


    <Button
        android:id="@+id/btn_start"
        android:textSize="22sp"
        android:text="START"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />

</LinearLayout>

 

 

package com.jw.jump;

import androidx.appcompat.app.AppCompatActivity;

import android.content.pm.ActivityInfo;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity implements SensorEventListener {

    SensorManager sm;
    Sensor sensor_accelerometer;
    int jump_up = 0;
    int jump_dwon = 0;
    float x,y,z;
    long startTime;
    long currentTime;
    static int jumpCount =0;
    int elapsedTime;

    final int jumpThreshold = 4; // 점프 임계값

    double gravity = 9.81;
    double acceleration = 0;

    TextView tv_jumpcount, tv_time;
    Button btn_start;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // 화면을 가로로 설정하기
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        setContentView(R.layout.activity_main);

        sm = (SensorManager) getSystemService(SENSOR_SERVICE);
        sensor_accelerometer = sm.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
        startTime = System.currentTimeMillis();

        tv_jumpcount = findViewById(R.id.tv_jumpcount);
        tv_time = findViewById(R.id.tv_time);
        btn_start = findViewById(R.id.btn_start);

        btn_start.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                currentTime = System.currentTimeMillis();
                elapsedTime = (int) currentTime - (int)startTime;
                tv_time.setText("남은시간 " + (60 - elapsedTime / 1000) + " 초");

            }
        });
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if(keyCode == KeyEvent.KEYCODE_BACK){
            finish();
            return false;
        }
        return false;
    }

    @Override
    protected void onResume() {
        super.onResume();

        sm.registerListener(this,sensor_accelerometer,SensorManager.SENSOR_DELAY_NORMAL);
    }

    @Override
    protected void onPause() {
        super.onPause();
        sm.unregisterListener(this);
    }

    @Override
    public void onSensorChanged(SensorEvent event) {
        if(event.sensor.getType() == Sensor.TYPE_ACCELEROMETER){
            x = event.values[0];
            y = event.values[1];
            z = event.values[2];
            acceleration = Math.sqrt(x * x + z * z);

            if(acceleration > gravity + jumpThreshold){
                jump_up = 1;
            }

            if(jump_up == 1 && acceleration < gravity - jumpThreshold) {
                jump_dwon = 1;
            }

            if(jump_dwon == 1){
                jump_up = 0;
                jump_dwon = 0;
                jumpCount++;
                tv_jumpcount.setText("점프 카운트: " + jumpCount);
            }
        }
    }

    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {

    }
}