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我无法使用 Android Studio 和 Java 中的接口在两个类之间传输数据

[英]I am unable to transfer data between two classes using interface in Android Studio with Java

 原文  2023-01-31 23:05:27  1   1    java/ android/ android-studio/ interface/ data-transfer

问题描述

我有一个应用程序，我完全以编程方式设置用户界面，这意味着我没有在 XML 中绘制对象。它工作得很好，但由于我在不同类的内容中绘制对象，我需要在两个班级。 例如，如果我在 Class1 中按下一个按钮，我想在 Class2 中的按钮上写上文本，并据此触发 Class2 中的按钮。 我认为使用接口是最合乎逻辑的解决方案，但我无法使用接口将数据从 Class1 传输到 Class2。 我收到一条错误消息，提示“无法转换为...”

我的游戏界面：

public interface GameInterface {

void seciliHucreyiDoldur(String seciliHucreyiDoldur);
}

第一类：

private class Cell implements GameInterface {
    int value;
    boolean fixed;
    Button btn;
    String hucreyiDolduracakVeri;
    Context THIS;

    public Cell(int initValue, Context THIS) {
        this.THIS = THIS;
        value = initValue;
        if (value != 0) {
            fixed = true;
        } else {
            fixed = false;
        }

        btn = new Button(THIS);
        btn.setTextSize(16);

        if (fixed) {
            btn.setText(String.valueOf(value));
        }

        txtSayac.setGravity(Gravity.CENTER);


        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (fixed) {
                    Toast.makeText(THIS, "Bu hücreyi değiştiremezsiniz!", Toast.LENGTH_SHORT).show();
                    return;
                }
                /*value++;
                if (value > 9) {
                    value = 1;
                }*/
                btn.setBackgroundResource(R.drawable.hucre_arkaplani_kirmizimsi);
                btn.setTextColor(Color.BLACK);
                btn.setText(hucreyiDolduracakVeri);

                btn.setTextColor(Color.RED);

                if (correct()) {
                    textView.setText("");
                } else {
                    textView.setText("Tekrar eden rakamlar var, kontrol etmelisin!");
                }
            }
        });

    }

    @Override
    public void seciliHucreyiDoldur(String seciliHucreyiDoldur) {
        this.hucreyiDolduracakVeri = seciliHucreyiDoldur;
        Toast.makeText(THIS, hucreyiDolduracakVeri, Toast.LENGTH_SHORT).show();
        if (fixed) {
            //Toast.makeText(THIS, "Bu hücreyi değiştiremezsiniz!", Toast.LENGTH_SHORT).show();
            return;
        }
                /*value++;
                if (value > 9) {
                    value = 1;
                }*/
        btn.setTextColor(Color.BLACK);
        btn.setText(seciliHucreyiDoldur);

        btn.setTextColor(Color.RED);
        btn.setBackgroundResource(R.drawable.hucre_arkaplani_mavi_acik);

        if (correct()) {
            textView.setText("");
        } else {
            textView.setText("Tekrar eden rakamlar var, kontrol etmelisin!");
        }

    }

    @Override
    public void hucreSeciliMi(boolean hucreSecilimi) {

    }
}

第二类：

public class AltBolumNumericTablo implements GameInterface{

    Button btnClick;
    boolean onClicked;
    int value;
    Activity activity;
    GameInterface gameInterface;

    public AltBolumNumericTablo(int value, Context THIS, Activity activity) {
        this.activity = activity;
        this.value = value;
        btnClick = new Button(THIS);
        btnClick.setTextSize(24f);

        gameInterface = (GameInterface) activity;

        switch (value) {
            case 0:
                btnClick.setText("1");
                break;
            case 1:
                btnClick.setText("2");

                break;
            case 2:
                btnClick.setText("3");

                break;
            case 3:
                btnClick.setText("4");

                break;
            case 4:
                btnClick.setText("5");

                break;
            case 5:
                btnClick.setText("6");

                break;
            case 6:
                btnClick.setText("7");

                break;
            case 7:
                btnClick.setText("8");

                break;
            case 8:
                btnClick.setText("9");

                break;
            case 9:
                btnClick.setBackgroundResource(R.drawable.sil_icon);
                break;
        }

        btnClick.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                clickIslemleri(value);
            }
        });

    }

    public void clickIslemleri(int value) {

        switch (value) {
            case 0:
            case 1:
            case 2:
            case 3:
            case 4:
            case 5:
            case 6:
            case 7:
            case 8:
        gameInterface.seciliHucreyiDoldur(String.valueOf(value+1));
                break;
            case 9:
                gameInterface.seciliHucreyiDoldur("");
                break;
        }
    }

    public void kayitliOyunuGuncelle() {
        misafirOyunKaydiDB = new MisafirOyunKaydiDB(MainActivity.this);
        new MisafirGirisliOyunKaydiDAO().misafirgirisiKaydiGuncelle(misafirOyunKaydiDB,
                1, input + " s", 0, "00:45", kayitZamanini());
        misafirKaydiListesi = new MisafirGirisliOyunKaydiDAO().tumOyunKayitlari(misafirOyunKaydiDB);
        for (int i = 0; i < misafirKaydiListesi.size(); i++) {
            Log.e("saved game", misafirKaydiListesi.get(i).getTimestamp());
        }
    }

    public void gecmisOyunlarGuest() {
        misafirOyunKaydiDB = new MisafirOyunKaydiDB(MainActivity.this);
        misafirKaydiListesi = new MisafirGirisliOyunKaydiDAO().tumOyunKayitlari(misafirOyunKaydiDB);
        for (int i = 0; i < misafirKaydiListesi.size(); i++) {
            Log.e("saved game", misafirKaydiListesi.get(i).getId() + "");

        }
    }

    @Override
    public void seciliHucreyiDoldur(String seciliHucreyiDoldur) {

    }

    @Override
    public void hucreSeciliMi(Boolean hucreSecilimi) {

    }
}

错误：

E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.devapost.mysudoku, PID: 4945
java.lang.ClassCastException: com.devapost.mysudoku.MainActivity cannot be cast to com.devapost.mysudoku.utils.GameInterface
    at com.devapost.mysudoku.MainActivity$AltBolumNumericTablo.<init>(MainActivity.java:514)
    at com.devapost.mysudoku.MainActivity.altNumericDoldur(MainActivity.java:297)

主活动.java：

public class MainActivity extends AppCompatActivity implements GameInterface{
Cell[][] table;
AltBolumNumericTablo[][] tableAltNumeric;
MisafirGirisEkrani[] tableMisafir;
UyeMenuEkrani[] tableUyeMenusu;
String input;
TableLayout tableLayout;
TextView textView, txtSayac;
Button buttonGenerate;
LinearLayout linearLayout;
Button btnGoogleLoginMainScreen, btnMisafirMainScreen;
int hangiEkranda = 0;
MisafirOyunKaydiDB misafirOyunKaydiDB;
ArrayList<MisafirGirisliOyunKaydiModel> misafirKaydiListesi;

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

    girisSecenekleriEkrani();
}

@Override
public void onBackPressed() {
    
    switch (hangiEkranda) {
        case 0:
        case 2://üye menusundeyse
            super.onBackPressed();
            linearLayout.removeAllViews();
            onBackPressed();
            break;
        case 1://misafir menusundeyse
            girisSecenekleriEkrani();
            break;
        case 3://misafir oyun ekranındaysa
            misafirOyunKaydiDB = new MisafirOyunKaydiDB(MainActivity.this);
            new MisafirGirisliOyunKaydiDAO().saveGame(misafirOyunKaydiDB, input, input, 5, txtSayac.getText().toString(), 1, kayitZamanini());
            misafirEkraniniDoldur();
            break;
        case 4://misafir ayarlardaysa
        case 5://misafirden nasıl oynanıra gittiyse
            misafirEkraniniDoldur();
            break;
        case 6://serüvene gittiyse
        case 7://rastgele oyun kurma ekranına gittiyse
        case 8://skorboard ekranına gittiyse
        case 9://üye ekranından ayarlara gittiyse
        case 10://üye ekranından nasıl oynanır ekranına gittiyse
            uyelerinMenusu();
            break;
    }


}

public String kayitZamanini() {
    Calendar anlikSaatDakika = Calendar.getInstance();
    int yil = anlikSaatDakika.get(Calendar.HOUR_OF_DAY);
    int ay = anlikSaatDakika.get(Calendar.MINUTE);
    int gun = anlikSaatDakika.get(Calendar.SECOND);
    int saat = anlikSaatDakika.get(Calendar.HOUR_OF_DAY);
    int dakika = anlikSaatDakika.get(Calendar.MINUTE);
    int saniye = anlikSaatDakika.get(Calendar.SECOND);
    return gun + "." + ay + "." + yil + " - " + saat + ":" + dakika + ":" + saniye;
}

public void girisSecenekleriEkrani() {//giriş seçenekleri ekranı
    hangiEkranda = 0;
    linearLayout = new LinearLayout(MainActivity.this);

    btnGoogleLoginMainScreen = new Button(MainActivity.this);
    btnMisafirMainScreen = new Button(MainActivity.this);

    btnGoogleLoginMainScreen.setText("Google İle Giriş Yap");
    btnMisafirMainScreen.setText("Misafir Girişi");
    btnGoogleLoginMainScreen.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            uyelerinMenusu();
        }
    });

    btnMisafirMainScreen.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            linearLayout.removeAllViews();
            misafirEkraniniDoldur();
        }
    });
    linearLayout.addView(btnGoogleLoginMainScreen);
    linearLayout.addView(btnMisafirMainScreen);
    LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
            LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT
    );
    linearLayout.setOrientation(LinearLayout.VERTICAL);
    linearLayout.setGravity(Gravity.CENTER);
    linearLayout.setLayoutParams(layoutParams);
    setContentView(linearLayout);
}

public void yeniOyunMisafirIcin() {
    hangiEkranda = 3;
    linearLayout.removeAllViews();
    int N = 9, K = 25;
    Sudoku sudoku = new Sudoku(N, K);
    sudoku.fillValues();

    txtSayac = new TextView(MainActivity.this);

    input = sudoku.printSudoku();
    String[] split = input.split(" ");
    table = new Cell[9][9];
    tableLayout = new TableLayout(MainActivity.this);
    for (int i = 0; i < 9; i++) {
        TableRow tableRow = new TableRow(MainActivity.this);

        for (int j = 0; j < 9; j++) {
            String s = split[i * 9 + j];
            char c = s.charAt(0);
            table[i][j] = new Cell(c == '?' ? 0 : c - '0', MainActivity.this);

            paintCellBackground(i, j, table[i][j].btn);
            tableRow.addView(table[i][j].btn);
        }
        tableLayout.addView(tableRow);
    }
    tableLayout.setShrinkAllColumns(true);
    tableLayout.setStretchAllColumns(true);
    textView = new TextView(MainActivity.this);
    buttonGenerate = new Button(MainActivity.this);
    linearLayout = new LinearLayout(MainActivity.this);

    linearLayout.addView(txtSayac);

    LinearLayout linearLayoutEkMetin = new LinearLayout(MainActivity.this);
    linearLayoutEkMetin.setLayoutParams(
            new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
    linearLayoutEkMetin.setOrientation(LinearLayout.VERTICAL);
    linearLayoutEkMetin.setGravity(Gravity.CENTER_HORIZONTAL);
    buttonGenerate.setText("Generate");
    buttonGenerate.setVisibility(View.GONE);
    buttonGenerate.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            misafirEkraniniDoldur();
            progressDialog.dismiss();
        }
    });

    linearLayoutEkMetin.addView(buttonGenerate);
    linearLayout.addView(tableLayout);
    linearLayout.addView(textView);
    linearLayout.addView(linearLayoutEkMetin);
    linearLayout.setOrientation(LinearLayout.VERTICAL);

    altNumericDoldur();
    setContentView(linearLayout);


}

public void paintCellBackground(int i, int j, Button button) {

    switch (i) {
        case 0:
        case 1:
        case 2:
        case 6:
        case 7:
        case 8:
            switch (j) {
                case 0:
                case 1:
                case 2:
                case 6:
                case 7:
                case 8:
                    button.setBackgroundResource(R.drawable.hucre_arkaplani_gri);
                    break;
                case 3:
                case 4:
                case 5:
                    button.setBackgroundResource(R.drawable.hucre_arkaplani_beyaz);
                    break;
            }
            break;
        case 3:
        case 4:
        case 5:
            switch (j) {
                case 0:
                case 1:
                case 2:
                case 6:
                case 7:
                case 8:
                    button.setBackgroundResource(R.drawable.hucre_arkaplani_beyaz);
                    break;
                case 3:
                case 4:
                case 5:
                    button.setBackgroundResource(R.drawable.hucre_arkaplani_gri);
                    break;
            }
            break;
    }

}

public void misafirEkraniniDoldur() {//misafir ekranını doldurur
    hangiEkranda = 1;
    tableMisafir = new MisafirGirisEkrani[5];
    tableLayout = new TableLayout(MainActivity.this);

    for (int i = 0; i < 5; i++) {
        TableRow tableRow = new TableRow(MainActivity.this);
        tableMisafir[i] = new MisafirGirisEkrani(i, MainActivity.this);

        tableRow.addView(tableMisafir[i].btnClick);
        tableLayout.addView(tableRow);
    }
    tableLayout.setShrinkAllColumns(true);
    tableLayout.setStretchAllColumns(true);
    linearLayout = new LinearLayout(MainActivity.this);

    LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
            LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT
    );
    layoutParams.setMarginStart(16);
    layoutParams.setMarginEnd(16);

    tableLayout.setLayoutParams(layoutParams);

    linearLayout.setGravity(Gravity.CENTER);

    linearLayout.addView(tableLayout);
    linearLayout.setOrientation(LinearLayout.VERTICAL);
    setContentView(linearLayout);
}

public void altNumericDoldur() {//alt numerik tabloyu doldurur
    tableAltNumeric = new AltBolumNumericTablo[2][5];
    tableLayout = new TableLayout(MainActivity.this);

    int butonID = 0;
    for (int i = 0; i < 2; i++) {
        TableRow tableRow = new TableRow(MainActivity.this);
        for (int j = 0; j < 5; j++) {

            tableAltNumeric[i][j] = new AltBolumNumericTablo(butonID, MainActivity.this,MainActivity.this);

            tableRow.addView(tableAltNumeric[i][j].btnClick);
            butonID++;
        }

        tableLayout.addView(tableRow);
    }
    tableLayout.setShrinkAllColumns(true);
    tableLayout.setStretchAllColumns(true);
    //linearLayout = new LinearLayout(MainActivity.this);

    LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
            LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT
    );
    layoutParams.setMarginStart(16);
    layoutParams.setMarginEnd(16);

    tableLayout.setLayoutParams(layoutParams);

    linearLayout.addView(tableLayout);
    linearLayout.setOrientation(LinearLayout.VERTICAL);
    setContentView(linearLayout);
}

private void uyelerinMenusu() {//google ile giriş yapanlar için serüven ekranı
    hangiEkranda = 2;
    tableUyeMenusu = new UyeMenuEkrani[5];
    tableLayout = new TableLayout(MainActivity.this);

    for (int i = 0; i < 5; i++) {
        TableRow tableRow = new TableRow(MainActivity.this);
        tableUyeMenusu[i] = new UyeMenuEkrani(i, MainActivity.this);

        tableRow.addView(tableUyeMenusu[i].btnClick);
        tableLayout.addView(tableRow);
    }
    tableLayout.setShrinkAllColumns(true);
    tableLayout.setStretchAllColumns(true);
    linearLayout = new LinearLayout(MainActivity.this);

    LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
            LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT
    );
    layoutParams.setMarginStart(16);
    layoutParams.setMarginEnd(16);

    tableLayout.setLayoutParams(layoutParams);

    linearLayout.setGravity(Gravity.CENTER);

    linearLayout.addView(tableLayout);
    linearLayout.setOrientation(LinearLayout.VERTICAL);
    setContentView(linearLayout);

}

@Override
public void seciliHucreyiDoldur(String seciliHucreyiDoldur) {

}

@Override
public void hucreSeciliMi(boolean hucreSecilimi) {

}

public class UyeMenuEkrani {

    Button btnClick;
    boolean onClicked;
    int value;

    public UyeMenuEkrani(int value, Context THIS) {
        this.value = value;
        btnClick = new Button(THIS);
        switch (value) {
            case 0:
                btnClick.setText("Serüven");
                break;
            case 1:
                btnClick.setText("Rastgele Oyna");
                break;
            case 2:
                btnClick.setText("Skor Tablosu");
                break;
            case 3:
                btnClick.setText("Ayarlar");
                break;
            case 4:
                btnClick.setText("Nasıl Oynanır");
                break;
        }

        btnClick.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                clickIslemleri(value);
            }
        });

    }

    public void clickIslemleri(int value) {
        switch (value) {
            case 0://seruven
                Toast.makeText(MainActivity.this, "serüvene gider", Toast.LENGTH_SHORT).show();
                break;
            case 1://rastgele
                yeniOyunMisafirIcin();//rastgele ekranı misafir giriş ekranına gider, çok benzer zaten
                break;
            case 2://skorboard
                Toast.makeText(MainActivity.this, "skorboard", Toast.LENGTH_SHORT).show();
                break;
            case 3://ayarlar
                Toast.makeText(MainActivity.this, "ayarlar", Toast.LENGTH_SHORT).show();
                break;
            case 4://nasıl oynanır
                Toast.makeText(MainActivity.this, "nasıl oynanır", Toast.LENGTH_SHORT).show();
                break;
            case 5:

                break;
        }

    }
}

public class MisafirGirisEkrani {

    Button btnClick;
    boolean onClicked;
    int value;

    public MisafirGirisEkrani(int value, Context THIS) {
        this.value = value;
        btnClick = new Button(THIS);


        switch (value) {
            case 0:
                btnClick.setText("Yeni Oyun");
                break;
            case 1:
                btnClick.setText("Devam Et");

                break;
            case 2:
                btnClick.setText("Ayarlar");

                break;
            case 3:
                btnClick.setText("Giriş Yap");

                break;
            case 4:
                btnClick.setText("Nasıl Oynanır");

                break;
        }

        btnClick.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                clickIslemleri(value);
            }
        });

    }

    public void clickIslemleri(int value) {
        switch (value) {
            case 0:
                yeniOyunMisafirIcin();
                break;
            case 1://eski oyunları listele ve onlardan seçip devam et
                gecmisOyunlarGuest();

                break;
            case 2:
                kayitliOyunuGuncelle();
                Toast.makeText(MainActivity.this, "ayarlar", Toast.LENGTH_SHORT).show();
                break;
            case 3:
                girisSecenekleriEkrani();
                break;
            case 4:
                Toast.makeText(MainActivity.this, "nasıl oynanır", Toast.LENGTH_SHORT).show();
                break;
        }

    }

    public void kayitliOyunuGuncelle() {
        misafirOyunKaydiDB = new MisafirOyunKaydiDB(MainActivity.this);
        new MisafirGirisliOyunKaydiDAO().misafirgirisiKaydiGuncelle(misafirOyunKaydiDB,
                1, input + " s", 0, "00:45", kayitZamanini());
        misafirKaydiListesi = new MisafirGirisliOyunKaydiDAO().tumOyunKayitlari(misafirOyunKaydiDB);
        for (int i = 0; i < misafirKaydiListesi.size(); i++) {
            Log.e("saved game", misafirKaydiListesi.get(i).getTimestamp());
        }
    }

    public void gecmisOyunlarGuest() {
        misafirOyunKaydiDB = new MisafirOyunKaydiDB(MainActivity.this);
        misafirKaydiListesi = new MisafirGirisliOyunKaydiDAO().tumOyunKayitlari(misafirOyunKaydiDB);
        for (int i = 0; i < misafirKaydiListesi.size(); i++) {
            Log.e("saved game", misafirKaydiListesi.get(i).getId() + "");

        }
    }
}

boolean complated() {
    for (int i = 0; i < 9; i++) {
        for (int j = 0; j < 9; j++) {
            if (table[i][j].value == 0) {
                return false;
            }
        }
    }
    return true;
}

boolean correct(int i1, int j1, int i2, int j2) {
    boolean[] seen = new boolean[10];
    for (int i = 1; i <= 9; i++) {
        seen[i] = false;
    }
    for (int i = i1; i < i2; i++) {
        for (int j = j1; j < j2; j++) {
            int value = table[i][j].value;
            if (value != 0) {
                if (seen[value]) {
                    return false;
                }
                seen[value] = true;
            }
        }
    }
    return true;
}

boolean correct() {
    for (int i = 0; i < 9; i++) {
        if (!correct(i, 0, i + 1, 9)) {
            return false;
        }
    }
    for (int j = 0; j < 9; j++) {
        if (!correct(0, j, 9, j + 1)) {
            return false;
        }
    }

    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 3; j++) {
            if (!correct(3 * i, 3 * j, 3 * i + 3, 3 * j + 3)) {
                return false;
            }
        }
    }

    return true;
}

}

1 个解决方案

解决方案1
 0  2023-02-01 12:36:02

明白了问题。 问题出在AltBolumNumericTablo class 中下面提到的行

gameInterface = (GameInterface) activity;

您只需要按照下面的说明进行更改

从

public AltBolumNumericTablo(int value, Context THIS, Activity activity)

到

public AltBolumNumericTablo(int value, Context THIS, GameInterface gameInterfaceParam){
  gameInterface = gameInterfaceParam
   .. existing code
}

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