每日一签

应用效果：随机点击，直到如上面的卡牌相同再改变文本，然后全部翻转，下面的按钮实现重新翻牌的效果

UI文件：

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


    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1">

        <ImageView
            android:id="@+id/theImage"
            android:layout_height="match_parent"
            android:layout_width="80dp"
            android:layout_marginLeft="15dp"
            android:src="@drawable/c1">

        </ImageView>

        <TextView
            android:id="@+id/theText"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:gravity="center"
            android:text="每日一签!" />
    </FrameLayout>

    <TableLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="4"
        android:stretchColumns="*">

        <TableRow
            android:layout_weight="1"
            android:layout_marginTop="10dp">

            <ImageView
                android:id="@+id/card1"
                android:layout_width="0dp"
                android:layout_height="150dp"
                android:src="@drawable/card"
                android:layout_marginLeft="30dp"
                >

            </ImageView>

            <ImageView
                android:id="@+id/card2"
                android:layout_width="0dp"
                android:layout_height="150dp"
                android:src="@drawable/card"
                android:layout_marginLeft="30dp"
                >

            </ImageView>

            <ImageView
                android:id="@+id/card3"
                android:layout_width="0dp"
                android:layout_height="150dp"
                android:src="@drawable/card"
                android:layout_marginLeft="30dp"
                android:layout_marginRight="30dp"
                >
            </ImageView>

        </TableRow>

        <TableRow android:layout_weight="1">
            <ImageView
                android:id="@+id/card4"
                android:layout_width="0dp"
                android:layout_height="150dp"
                android:src="@drawable/card"
                android:layout_marginLeft="30dp"
                android:layout_marginTop="15dp">

            </ImageView>
            <ImageView
                android:id="@+id/card5"
                android:layout_width="0dp"
                android:layout_height="150dp"
                android:src="@drawable/card"
                android:layout_marginLeft="30dp"
                android:layout_marginTop="15dp">

            </ImageView>

            <ImageView
                android:id="@+id/card6"
                android:layout_width="0dp"
                android:layout_height="150dp"
                android:layout_marginLeft="30dp"
                android:layout_marginRight="30dp"
                android:layout_marginTop="15dp"
                android:src="@drawable/card">

            </ImageView>
        </TableRow>

        <TableRow
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_marginBottom="10dp"
            android:layout_weight="1">

            <ImageView
                android:id="@+id/card7"
                android:layout_width="0dp"
                android:layout_height="150dp"
                android:layout_marginLeft="30dp"
                android:layout_marginTop="15dp"
                android:src="@drawable/card">

            </ImageView>

            <ImageView
                android:id="@+id/card8"
                android:layout_width="0dp"
                android:layout_height="150dp"
                android:layout_marginLeft="30dp"
                android:layout_marginTop="15dp"
                android:src="@drawable/card">
            </ImageView>


            <ImageView
                android:id="@+id/card9"
                android:layout_width="0dp"
                android:layout_height="150dp"
                android:layout_marginLeft="30dp"
                android:layout_marginRight="30dp"
                android:layout_marginTop="15dp"
                android:src="@drawable/card">

            </ImageView>
        </TableRow>
    </TableLayout>

    <TableLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="0.5"
        android:orientation="horizontal"
        android:stretchColumns="0">

        <TableRow
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <Button
                android:id="@+id/aButton"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:text="Again"></Button>
    </TableRow>
    </TableLayout>



</LinearLayout>

应用文件：

import android.media.Image;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Random;


public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    int aRandom;
    int imgs[] = {R.drawable.c1,R.drawable.c2,R.drawable.c3,R.drawable.c4,R.drawable.c5,R.drawable.c6,R.drawable.c7,R.drawable.c8,R.drawable.c9}; //存储图片的数组
    ArrayList arr = new ArrayList();
    ImageView aImage; // 存放每日一签的ImageView
    ImageView ImageViews[]=new ImageView[9];
    TextView  aTextView;
    Button aButton;


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

        //随机数
        Random random = new Random();
        random.setSeed(random.nextLong());

        //初始化一个随机数
        aRandom = random.nextInt(9); // [0,9)

        //获得该控件的句柄
        aImage = (ImageView) findViewById(R.id.theImage);

        //将当前的句柄进行数组中随机的替换
        aImage.setImageResource(imgs[aRandom]); //比如第四

        //动态添加数组
        for(int i=0;i<9;i++){
            arr.add(i);
        }

        //随机打乱
        Collections.shuffle(arr);
    }

    @Override
    public void onClick(View v) {
        int cNum;
        System.out.print("随机数是" + aRandom + " ");
        switch(v.getId()) {
            case R.id.card1:
                cNum = (int)arr.get(0); //把随机打乱的牌取出 在数组中的第一个 假如取出的是7
                ImageViews[0].setImageResource(imgs[cNum]); //
                ToEnsure(cNum);
                System.out.println(cNum);
                break;
            case R.id.card2:
                cNum = (int) arr.get(1);
                ImageViews[1].setImageResource(imgs[cNum]);
                ToEnsure(cNum);
                System.out.println(cNum);
                break;
            case R.id.card3:
                cNum = (int) arr.get(2);
                ImageViews[2].setImageResource(imgs[cNum]);
                ToEnsure(cNum);
                System.out.println(cNum);
                break;
            case R.id.card4:
                cNum = (int) arr.get(3);
                ImageViews[3].setImageResource(imgs[cNum]);
                ToEnsure(cNum);
                System.out.println(cNum);
                break;
            case R.id.card5:
                cNum = (int) arr.get(4);
                ImageViews[4].setImageResource(imgs[cNum]);
                ToEnsure(cNum);
                System.out.println(cNum);
                break;
            case R.id.card6:
                cNum = (int) arr.get(5);
                ImageViews[5].setImageResource(imgs[cNum]);
                ToEnsure(cNum);
                System.out.println(cNum);
                break;
            case R.id.card7:
                cNum = (int) arr.get(6);
                ImageViews[6].setImageResource(imgs[cNum]);
                ToEnsure(cNum);
                System.out.println(cNum);
                break;
            case R.id.card8:
                cNum = (int) arr.get(7);
                ImageViews[7].setImageResource(imgs[cNum]);
                ToEnsure(cNum);
                System.out.println(cNum);
                break;
            case R.id.card9:
                cNum = (int) arr.get(8);
                ImageViews[8].setImageResource(imgs[cNum]);
                ToEnsure(cNum);
                System.out.println(cNum);
                break;
        }
    }

    //封装一个判断是否正确的函数
    public void ToEnsure(int cNum){
        if(cNum == aRandom){
            //判断对了之后则获取文本的句柄进行改变文本
            aTextView = (TextView) findViewById(R.id.theText);
            aTextView.setText("恭喜你猜中了！");
            for(int i=0;i<9;i++){
                ImageViews[i].setImageResource(imgs[(int)arr.get(i)]);

            }
        }
    }

    //重写加载的函数
    public void ToReload(){
        //图像设置为背景
        for(int j=0;j<9;j++){
            String ImageId = "card" + (j + 1);
            int resID = getResources().getIdentifier(ImageId, "id", getPackageName());
            ImageViews[j] = (ImageView) findViewById(resID);
            ImageViews[j].setImageResource(R.drawable.card);
        }
        //随机数
        Random random = new Random();
        random.setSeed(random.nextLong());

        //初始化一个随机数
        aRandom = random.nextInt(9);

        //获得该控件的句柄
        aImage = (ImageView) findViewById(R.id.theImage);

        //将当前的句柄进行数组中随机的替换
        aImage.setImageResource(imgs[aRandom]);

        Collections.shuffle(arr);

        //文本重新设置
        aTextView = (TextView) findViewById(R.id.theText);
        aTextView.setText("今日一签");
    }

    public void GetHandle() {
        //获得该控件的句柄
        for (int j = 0; j < 9; j++) {
            String ImageId = "card" + (j + 1);
            int resID = getResources().getIdentifier(ImageId, "id", getPackageName());
            ImageViews[j] = (ImageView) findViewById(resID);
            ImageViews[j].setOnClickListener(this);
        }
    }

    public void BtnAddClick(){
        //按钮添加点击事件
        aButton = (Button) findViewById(R.id.aButton);
        aButton.setOnClickListener(
                new View.OnClickListener(){
                    public void onClick(View v) {
                        ToReload();
                    }
                }
        );
    }

}