java - 将 ImageView 转换为整数 : Android Studio

Question

我试图获取目标(启动为 ImageView)id 并将整数 id 放入 switch case 中以查看相邻的 View 并比较它们的可绘制对象以确定该玩家是否获胜或游戏是否继续。我将 buttonPressed 变量初始化为 Integer，并使用 parseInt() 来获取目标的 int 值。

public void compareButton(int buttonPressed){
    //int count = 0;
    ImageView adjacent;
    ImageView adjacentB;

    switch (buttonPressed){
        case R.id.imageButtonA: //this is where adjacent buttons are identified and compared
            adjacent = findViewById(R.id.imageButtonB);
            adjacentB = findViewById(R.id.imageButtonC);
            if (target.getDrawable() == adjacent.getDrawable() && target.getDrawable() == adjacentB.getDrawable()) {

                Toast.makeText(MainActivity.this, "You Win!", Toast.LENGTH_SHORT).show(); //Win condition


           // } else if (target.getDrawable() == R.id.imageButtonE.getDrawable() & target.getDrawable() == R.id.imageButtonI.getDrawable()) {

                //Toast.makeText(MainActivity.this, "You Win!", Toast.LENGTH_SHORT).show(); //Win condition

           // } else if (target.getDrawable() == R.id.imageButtonD.getDrawable() & target.getDrawable() == R.id.imageButtonG.getDrawable()) {

                //Toast.makeText(MainActivity.this, "You Win!", Toast.LENGTH_SHORT).show(); //Win condition

            }
            break;
        case R.id.imageButtonB:

            break;

出于调试目的，我不会填写每个案例。

我遇到的问题是当我运行模拟器时出现错误

Caused by: java.lang.NumberFormatException: For input string: "androidx.appcompat.widget.AppCompatImageButton{517eade VFED..C.. ...P..ID 45,381-304,628 #7f070072 app:id/imageButtonA}"
    at java.lang.Integer.parseInt(Integer.java:521)
    at java.lang.Integer.parseInt(Integer.java:556)
    at com.example.connect3.MainActivity.switchColor(MainActivity.java:75)

这是 OnClickListener 的代码:

public void switchColor(View view) {

    //Button pressed, depending on user, switch's to that users color; identify adjacent button ID's; toast player control switch
    if (player == 1) {

        source = findViewById(R.id.yellow);
        target = findViewById(view.getId());
        target.setImageDrawable(source.getDrawable());
        buttonPressed = Integer.parseInt(target.toString());
        compareButton(buttonPressed);
        player++;
        Toast.makeText(MainActivity.this, "Player 2's Turn!", Toast.LENGTH_SHORT).show();

    } else {

        source = findViewById(R.id.red);
        target = findViewById(view.getId());
        target.setImageDrawable(source.getDrawable());
        buttonPressed = Integer.parseInt(String.valueOf(target));
        compareButton(buttonPressed);
        player--;
        Toast.makeText(MainActivity.this, "Player 1's Turn!", Toast.LENGTH_SHORT).show();

    }

不完全确定此时发生了什么，因为我认为我做的一切都是正确的，但显然遗漏了一些东西。任何帮助将不胜感激。

Answer 1

更改:

buttonPressed = Integer.parseInt(String.valueOf(target));

致:

buttonPressed = target.getId();

解释:您的错误表示 NumberFormatException 意味着您正在尝试从无法解析的 String 获取 int 值，或者简单来说您的字符串不包含正确的 int 值，并且您正在传递 (androidx.appcompat.widget.. .) 作为字符串，而你必须传递按钮我会