如何在 android studio 的 If 语句中写“if button clicked”？

Question

我正在用四张卡片（2x2）构建一个记忆游戏。这四张卡片有一个名为“卡片”的 onClick。这个 onClick 包含一个 If 语句，如果它们不同，则将它们翻转回来，如果它们相同，则保留它们。

卡片的正面图像与4相同，但背面图像不同。我的问题是我希望卡片翻转，但它们已经有一个onClick。那么如何在 If 语句中写“if button clicked”还是有其他解决方案？

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);


    }


}

我尝试的第二种方法：@Override 公共无效 onClick（查看 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点击了哪个ImageButton。您可以从传递给onClick 方法的视图变量中获取此信息。

您还需要跟踪点击了哪些图片。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，您需要在每次更改图像（以及第一次创建图像时）时设置标签。因此，要检查是否需要重置，您需要检查两个图像是否已与它们开始使用的默认图像不同。您也可以使用全局变量执行此操作，但标记可能更直观一些。

Answer 2

可以参考Android Dev Doc

首先，您需要了解什么是事件监听器，并实现它。 完成后，您可以将事件侦听器注册到您的实现中。

示例代码

// Create an anonymous implementation of OnClickListener
private OnClickListener mCorkyListener = new OnClickListener() {
    public void onClick(View v) {
      // do something when the button is clicked
    }
};

protected void onCreate(Bundle savedValues) {
    ...
    // Capture our button from layout
    Button button = (Button)findViewById(R.id.corky);
    // Register the onClick listener with the implementation above
    button.setOnClickListener(mCorkyListener);
    ...
}

Answer 3

试试这个

     protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);



        b1 = (Button)findViewById(R.id.button1);

        b1.setOnClickListener(new OnClickListener(){

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub

                //write your codes here





                }

            });
}