java - 我应该如何将这个游戏打包为apk？

Question

我用 python 创建了一个游戏，并尝试将其打包为 apk。经过多次不成功的尝试，我尝试安装 android studio 并在 java 中重新创建它。作为第一次尝试用 java 编写代码，我遇到了一些错误，我不知道如何克服

我尝试使用kivy和公文包将我的游戏打包为apk，然后我只会更改输入。但我放弃了这个解决方案，而是尝试在 java 中重新创建它，但没有取得太大成功。

import pygame
import random
from os import path
pygame.init()

win = pygame.display.set_mode((500, 500))
#image = pygame.image.load("grass.png").convert_alpha()
#image = pygame.transform.scale(image,(500,500))
#dim = image.get_rect()
#win.blit(image,(250-dim.center[0],250-dim.center[1]))
pygame.display.update()
pygame.display.set_caption("F1")
if not path.exists("highscore.txt"):
    f = open("highscore.txt","w")

run = False
out = False

while out == False:

    myFont = pygame.font.SysFont("Times New Roman", 18)
    hsc = myFont.render("Highscore:", 1, [255,255,255])
    f = open("highscore.txt", "r")
    highsc = myFont.render(f.read(), 1, [255,255,255])

    x = 238
    y = 500
    width = 30
    height = 50
    speed = 0
    hs = 0

    obstacles = []


    while not run :
        start = pygame.draw.rect(win,(255,125,125),[200,125,100,30])
        getout = pygame.draw.rect(win,(255,125,125),[200,325,100,30])
        pygame.display.update()

        for event in pygame.event.get():
            if event.type == pygame.MOUSEBUTTONDOWN and event.button == 1 :
                if start.collidepoint(event.pos):
                    run = True
                elif getout.collidepoint(event.pos):
                    pygame.quit()


    class incoming(object):
        def __init__(self,a,b,width,height):
            self.a = a
            self.b = b + speed
            self.width = width
            self.height = height

        def collision(self):
            if x == self.a and self.b + height > 380:
                if self.b < 380 + height:
                    return True

        def draw(self,win):
            pygame.draw.rect(win,(random.randrange(0,255),random.randrange(0,255),random.randrange(0,255)),(self.a,self.b,self.width,self.height))
            #inc = pygame.image.load("inc.png").convert_alpha()
            #inc = pygame.transform.scale(inc,(30,50))
            #if self.a < 235:
               # inc = pygame.transform.flip(inc,180,1)
            #win.blit(inc,(self.a,self.b))


    pygame.time.set_timer(pygame.USEREVENT+2, random.randrange(600,800))

    while run:
        win.fill((0,255,0))
        road = pygame.draw.rect(win,[0,0,0],[165,y,140,-1000000])
        cont = pygame.draw.rect(win,[255,255,255],[234,1000000,2,-1000000])
        pl = pygame.draw.rect(win,[255,0,0],[x,380,width,height])
        #player1 = pygame.image.load("enzo.png").convert_alpha()
        #player1 = pygame.transform.scale(player1,(30,50))
        #win.blit(player1,(x,380))



        a = random.randrange(168,276,35)

        while speed < 30:
            speed = speed + 3
            break

        y=y+speed

        b = 0

        Score = int((y - 500)/100)
        myFont = pygame.font.SysFont("Times New Roman", 18)

        scris = myFont.render("Score:", 1, [255,255,255])
        scr = myFont.render(str(int(Score)), 1, [255,255,255])

        win.blit(scris, (30,40))
        win.blit(scr, (30, 60))


        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                run = False

            if event.type == pygame.USEREVENT+2 and speed > 1.3  :
                obstacles.append(incoming(a,b,width,height))


        for obstacle in obstacles:
            if obstacle.collision():
                pygame.time.delay(1000)
                win.set_alpha(0)
                run = False
                with open("highscore.txt", "r+") as hisc:
                    hi = hisc.read()
                    if not hi:  
                        hi = '0'
                    if int(Score) > int(hi):
                        hisc.seek(0)  
                        hisc.write(str(int(Score)))



            if obstacle.a < 210:
                obstacle.b = obstacle.b + speed + 1
            else:
                obstacle.b = obstacle.b + speed - 1
            obstacle.draw(win)


        win.blit(hsc, (380,40))
        win.blit(highsc, (380, 60))

        pygame.display.update()

        keys = pygame.key.get_pressed()


        if keys[pygame.K_LEFT] and x > 200 :
            x=x-35

        if keys[pygame.K_RIGHT] and x < 260:
            x=x+35


pygame.quit()

这(上图)就是游戏在 PYTHON 中的运行方式。

这是我的 JAVA 代码

package com.example.neonrace;

import android.graphics.Rect;
import android.graphics.Canvas;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        boolean run = false;
        boolean out = false;

        while (out == false){
            final int x = 238;
            final int[] y = {500};
            final int width = 30;
            final int height = 50;
            final int[] speed = {0};

            final List<Object> obstacles = new ArrayList<Object>();

            class incoming{
                int a;
                int b;
                int width;
                int height;

                public incoming(int a, int b, int width, int height){
                    this.a = a;
                    this.b = b;
                    this.width = width;
                    this.height = height;
                }

                public void collision;{
                    if (x == this.a) && (this.b + height) > 380; {
                        if (this.b < (380 + height));{
                            return true;
                        }
                    }
                }

                public static void draw() {
                    Canvas.drawRect(this.a, this.b, this.width, this.height, black);
                }
            };

            new java.util.Timer().schedule(
                    new java.util.TimerTask(){
                        @Override
                        public void run(){
                            obstacles.add(incoming(int a, int b, int width, int height));
                            obstacles[].draw();
                        }
                    },700
            );




            Button Start = (Button) findViewById(R.id.Start);
            Start.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View view){
                boolean run = true;
                while (run) {
                    Canvas.drawRect(165, 380, 240, 250, blue);
                    Canvas.drawRect(x,382, 30,50, red);

                    Random r = new Random();
                    int a = (int) r.nextInt(168, 276, 35);

                    while (speed[0] <30){
                        speed[0] = speed[0] + 3;
                    }

                    y[0] = y[0] + speed[0];

                    int size = ArrayList.size();
                    int i = 0;

                    for ( int i = 0, i < size, i++){
                        if obstacles[i].collision == true{
                            run = false
                        }

                        if obstacles[i].a < 210{
                            obstacles[i].b += speed+1
                        }
                        else {
                            obstacles[i].b += speed - 1
                        }
                        obstacles[i].draw()
                    }

                    public boolean onTouchEvent(MotionEvent event) {
                        int u = (int) event.getX();
                        if u < 200{
                            x = x - 35
                        }
                        else {
                            x = x + 35
                        }
                        }
                    }



                }

                }
            });
        }
    }
}

这是我第一次用java编写代码，结果与预期相差甚远。附:我知道我没有对退出按钮做任何事情。这应该是最后值得担心的事情。

Answer 1

您没有将其放在接近 Android 应用程序所需格式的地方。您不能在 onCreate 中永远运行一个大循环 - onCreate 需要相当快地返回。在此之前，您将看不到任何用户界面。您正在调用 Canvas.drawRect - 这是行不通的，drawRect 是在 Canvas 的实例上调用的，而不是在类上调用的。而且 Activity 没有绘制函数 - 它有 View ，并且这些 View 可以绘制。 Activity 则不然。

老实说，这个级别你需要退后一步，学习 Android 和 Java，当你了解更多后再尝试。重写比抢救更快。