Question

我是android编程的新手，我正在尝试制作一个简单的游戏。我想要有3个正方形，并且在开始按钮上我想生成一些随机数并旋转其中一个正方形。我在循环中这样做，因为我的随机数不固定。

package com.example.smartpc.memorygame;

import android.graphics.drawable.TransitionDrawable;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.RotateAnimation;
import android.widget.Button;
import android.widget.ImageView;

import java.util.ArrayList;
import java.util.Random;
import java.util.Timer;
import java.util.TimerTask;

public class MemoryGame extends AppCompatActivity {

    ImageView imgRed;
    ImageView imgGreen;
    ImageView imgBlue;
    Button btnStart;

    ArrayList<Integer>array=new ArrayList<>();
    int brojac=3;

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

        imgRed=(ImageView)findViewById(R.id.imgRed);
        imgGreen=(ImageView)findViewById(R.id.imgGreen);
        imgBlue=(ImageView)findViewById(R.id.imgBlue);
        btnStart=(Button)findViewById(R.id.btnStart);

        final RotateAnimation animation=new RotateAnimation(0f,360f, RotateAnimation.RELATIVE_TO_SELF,0.5f,
                                                            RotateAnimation.RELATIVE_TO_SELF,0.5f);
        animation.setDuration(1000);

        imgRed.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                imgRed.startAnimation(animation);
            }
        });

        imgGreen.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                imgGreen.startAnimation(animation);
            }
        });

        imgBlue.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                imgBlue.startAnimation(animation);
            }
        });

        btnStart.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                for(int i=0;i<brojac;i++) {
                    Random rand = new Random();
                    int number = rand.nextInt() % 3;
                    if (number == 1) {
                        imgRed.startAnimation(animation);
                    }
                    else if (number == 2) {
                        imgGreen.startAnimation(animation);
                    }
                    else {
                        imgBlue.startAnimation(animation);
                    }
                }

            }
        });
    }
}

我需要等到一个动画结束，然后我需要开始另一个循环迭代。有谁知道如何做到这一点？谢谢！

Answer 1

在btnStart上单击“仅创建随机数”并根据该开始动画

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

            Random rand = new Random();
            int number = rand.nextInt() % 3;
            if (number == 1) {
                imgRed.startAnimation(animation);
            }
            else if (number == 2) {
                imgGreen.startAnimation(animation);
            }
            else {
                imgBlue.startAnimation(animation);
            }
        }
    });

在setAnimationListener中，当动画结束时，再次创建随机数并依赖于该开始动画

    final RotateAnimation animation=new RotateAnimation(0f,360f, RotateAnimation.RELATIVE_TO_SELF,0.5f,
        RotateAnimation.RELATIVE_TO_SELF,0.5f);
    animation.setDuration(1000);

    animation.setAnimationListener(new Animation.AnimationListener() {
        @Override
        public void onAnimationStart(Animation animation) {

        }

        @Override
        public void onAnimationEnd(Animation animation) {
            Random rand = new Random();
            int number = rand.nextInt() % 3;
            if (number == 1) {
                imgRed.startAnimation(animation);
            }
            else if (number == 2) {
                imgGreen.startAnimation(animation);
            }
            else {
                imgBlue.startAnimation(animation);
            }

        }

        @Override
        public void onAnimationRepeat(Animation animation) {

        }
     });

android studio中的连续动画，循环

1 个答案: