java - 如何在 android studio 的 If 语句中写入 "if button clicked"？

Question

我正在用四张牌 (2x2) 构建一个内存游戏。这四张卡片有一个名为“卡片”的 onClick。此 onClick 包含一个 If 语句，如果卡片不相同，则将卡片翻转回去，如果卡片相同，则保留它们。

4 的卡片正面图像相同，但背面图像不同。我的问题是我想让卡片翻转，但它们已经有一个 onClick。那么如何在 If 语句中编写“如果按钮被单击”或者是否有其他解决方案？

编辑:

button1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            button1.setVisibility(View.INVISIBLE);
            pic1 = (ImageView) findViewById(R.id.imageView);
            pic2 = (ImageView) findViewById(R.id.imageView2);
            pic3 = (ImageView) findViewById(R.id.imageView3);
            pic4 = (ImageView) findViewById(R.id.imageView4);

            pic1.setImageResource(R.drawable.img1);
            pic2.setImageResource(R.drawable.img1);
            pic3.setImageResource(R.drawable.img1);
            pic4.setImageResource(R.drawable.img1);

            pic1.setVisibility(View.VISIBLE);
            pic2.setVisibility(View.VISIBLE);
            pic3.setVisibility(View.VISIBLE);
            pic4.setVisibility(View.VISIBLE);


        }
    });

}


public void cards(View v) {


    if (v.getId() == pic1.getId() ) {
        pic1.setImageResource(R.drawable.img2);
        pic1.setTag("img2");
    } else if (v.getId() == pic2.getId()) {
        pic2.setImageResource(R.drawable.img2);
        pic2.setTag("img2");
    } else if (v.getId() == pic3.getId()) {
        pic3.setImageResource(R.drawable.img3);
        pic3.setTag("img3");
    } else if (v.getId() == pic4.getId()) {
        pic4.setImageResource(R.drawable.img3);
        pic4.setTag("img3");
    }

    if (R.drawable.img2 == R.drawable.img2) {
        pic1.setImageResource(R.drawable.img2);
        pic1.getTag();
        pic2.setImageResource(R.drawable.img2);
        pic2.getTag();
    }
    if (R.drawable.img3 == R.drawable.img3) {
        pic3.setImageResource(R.drawable.img3);
        pic3.getTag();
        pic4.setImageResource(R.drawable.img3);
        pic4.getTag();

    }
    if (R.drawable.img2 != R.drawable.img2 || R.drawable.img3 != R.drawable.img3) {
        pic1.setImageResource(R.drawable.img1);
        pic2.setImageResource(R.drawable.img1);
        pic3.setImageResource(R.drawable.img1);
        pic4.setImageResource(R.drawable.img1);


    }


}

我正在尝试的第二种方法:@Override public void onClick(View v) { button1.setVisibility(View.INVISIBLE); pic1 = (ImageView) findViewById(R.id.imageView); pic2 = (ImageView) findViewById(R.id.imageView2); pic3 = (ImageView) findViewById(R.id.imageView3); pic4 = (ImageView) findViewById(R.id.imageView4);

            pic1.setImageResource(R.drawable.img1);
            pic2.setImageResource(R.drawable.img1);
            pic3.setImageResource(R.drawable.img1);
            pic4.setImageResource(R.drawable.img1);

            pic1.setVisibility(View.VISIBLE);
            pic2.setVisibility(View.VISIBLE);
            pic3.setVisibility(View.VISIBLE);
            pic4.setVisibility(View.VISIBLE);


            if (R.drawable.img2 == R.drawable.img2) {
                pic1.setImageResource(R.drawable.img2);

                pic2.setImageResource(R.drawable.img2);

            }
            if (R.drawable.img3 == R.drawable.img3) {
                pic3.setImageResource(R.drawable.img3);

                pic4.setImageResource(R.drawable.img3);


            }
            if (R.drawable.img2 != R.drawable.img2 || R.drawable.img3 != R.drawable.img3) {
                pic1.setImageResource(R.drawable.img1);
                pic2.setImageResource(R.drawable.img1);
                pic3.setImageResource(R.drawable.img1);
                pic4.setImageResource(R.drawable.img1);


            }


        }
    });

}



public void pic1Click(View v){
    pic1.setImageResource(R.drawable.img1);
}
public void pic2Click(View v){
    pic2.setImageResource(R.drawable.img1);
}
public void pic3Click(View v){
    pic3.setImageResource(R.drawable.img2);
}
public void pic4Click(View v){
    pic4.setImageResource(R.drawable.img2);
}

Answer 1

所以我认为您正在寻找一种方法来确定用户单击了哪个 ImageButton。您可以从传递给 onClick 方法的 View 变量中获取它。

您还需要跟踪点击了哪些图像。您可以通过向图像添加标签来跟踪这一点。

public void myClickMethod(View v){
    if (v.getId() == pic1.getId() ) {
        pic1.setImageResource(R.drawable.img2);
        pic1.addTag("img2");
    } else if (v.getId() == pic2.getId() {
        pic2.setImageResource(R.drawable.img2);
        pic2.addTag("img2");
    } else if (v.getId() == pic3.getId() {
        pic3.setImageResource(R.drawable.img3);
        pic3.addTag("img3");
    } else if (v.getId() == pic4.getId() {
        pic4.setImageResource(R.drawable.img3);
        pic4.addTag("img3");
    } 

当然，每次更改图像(以及第一次创建图像)时，您都希望设置标签。因此，要检查是否需要重置，您需要检查两个图像是否已从它们开始时使用的默认图像更改。您也可以使用全局变量来执行此操作，但标签可能更直观一些。