[Android/Java] 지나가는 비행기

Demo

구성

• activity
• view
• gif resource

 

- [MainActivity.java]

package com.example.recyclerview;

import android.app.Activity;
import android.os.Bundle;

public class MainActivity extends Activity {
    private PlainAnim pa;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        pa = new PlainAnim(this);
        setContentView(pa);
    }
}

 

- [PlaneAnim.java]

package com.example.recyclerview;

import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Point;
import android.graphics.Rect;
import android.os.Handler;
import android.util.Log;
import android.view.Display;
import android.view.View;

import java.util.Random;


public class PlainAnim extends View {
    private Bitmap background;
    private Bitmap plane[] = new Bitmap[8];
    private int planeX, planeY;
    private Rect dest;
    private int dWidth, dHeight;
    private int planeFrame = 0;
    private Random random;
    private int planeVelocity = 20;
    private int planeWidth, planeHight;
    private Handler handler;
    private Runnable runnable;
    private final int UPDATE_MILLIS = 30;

    public PlainAnim(Context context) {
        super(context);
        handler = new Handler();
        random = new Random();

        background = BitmapFactory.decodeResource(getResources(), R.drawable.background);
        plane[0] = BitmapFactory.decodeResource(getResources(), R.drawable.plain0);
        plane[1] = BitmapFactory.decodeResource(getResources(), R.drawable.plain1);
        plane[2] = BitmapFactory.decodeResource(getResources(), R.drawable.plain2);
        plane[3] = BitmapFactory.decodeResource(getResources(), R.drawable.plain3);
        plane[4] = BitmapFactory.decodeResource(getResources(), R.drawable.plain4);
        plane[5] = BitmapFactory.decodeResource(getResources(), R.drawable.plain5);
        plane[6] = BitmapFactory.decodeResource(getResources(), R.drawable.plain6);
        plane[7] = BitmapFactory.decodeResource(getResources(), R.drawable.plain7);

        // 화면크기구하기
        Display display = ((Activity) getContext()).getWindowManager().getDefaultDisplay();
        Point size = new Point();
        display.getSize(size);
        dWidth = size.x;
        dHeight = size.y;
        planeX = -plane[0].getWidth();
        planeY = random.nextInt(10) * 100;
        dest = new Rect(0, 0, dWidth, dHeight);

        runnable = new Runnable() {
            @Override
            public void run() {
                invalidate();
            }
        };
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        canvas.drawBitmap(background, null, dest, null);//화면크기에 맞게 백그라운드 이미지 그리기

        planeFrame++;
        if(planeFrame == 8){
            planeFrame = 0;
        }

        planeX += planeVelocity; // x 변화값 달리는 속도
        planeWidth = plane[0].getWidth();
        planeHight = plane[0].getHeight();
        if(planeX > dWidth) {
            planeX = -plane[0].getWidth();
            planeY = random.nextInt(10) * 100;
            Log.d("planeY : ", planeY + "");
        }
        canvas.drawBitmap(plane[planeFrame], planeX, planeY, null);// 위치값 설정해서 비행기 그리기
        handler.postDelayed(runnable, UPDATE_MILLIS);
    }

}