Android将3张图片用按钮进行切换

在Android中，你可以使用三个ImageView控件分别显示三张图片，并配合Button来实现图片的切换。首先，在布局XML文件中，你需要添加三个ImageView和一个Button：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">
    
    <ImageView
        android:id="@+id/imageView1"
        android:src="@drawable/pic1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    
    <ImageView
        android:id="@+id/imageView2"
        android:src="@drawable/pic2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    
    <ImageView
        android:id="@+id/imageView3"
        android:src="@drawable/pic3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/switchButton"
        android:text="切换图片"
        android:onClick="onSwitchButtonClick"
        android:layout_margin="10dp"
        android:layout_gravity="bottom"/>
</LinearLayout>

然后在对应的Activity或Fragment中编写`onSwitchButtonClick`方法，通过设置ImageView的`setImageResource()`来改变当前显示的图片：

public class YourActivity extends AppCompatActivity {

    private ImageView imageView1, imageView2, imageView3;
    private Button switchButton;

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

        imageView1 = findViewById(R.id.imageView1);
        imageView2 = findViewById(R.id.imageView2);
        imageView3 = findViewById(R.id.imageView3);
        switchButton = findViewById(R.id.switchButton);

        // 设置初始显示的图片
        imageView1.setImageResource(R.drawable.pic1);
    }

    public void onSwitchButtonClick(View v) {
        int currentImageIndex = determineCurrentImageIndex(); // 获取当前显示的图片索引

        if (currentImageIndex == 0) {
            imageView1.setImageResource(R.drawable.pic2);
            imageView2.setImageResource(R.drawable.pic1);
            imageView3.setImageResource(R.drawable.pic3);
        } else if (currentImageIndex == 1) {
            imageView1.setImageResource(R.drawable.pic3);
            imageView2.setImageResource(R.drawable.pic2);
            imageView3.setImageResource(R.drawable.pic1);
        } else { // 如果是第三张
            imageView1.setImageResource(R.drawable.pic1);
            imageView2.setImageResource(R.drawable.pic3);
            imageView3.setImageResource(R.drawable.pic2);
        }
    }

    private int determineCurrentImageIndex() {
        // 根据布局顺序确定当前显示的图片索引
        return imageView1.getId();
    }
}