写出完整代码并添加注释

这里是一个简单的例子，展示了如何在Android Studio中使用CameraX库实现拍照并获取照片的存储路径。请注意，实际应用中你需要考虑更多错误处理和UI交互。

// 引入所需依赖
import androidx.camera.core.ImageCapture;
import androidx.camera.core.Preview;
import androidx.camera.core.ImageCapture.OnImageSavedCallback;
import androidx.lifecycle.LifecycleOwner;

// 创建相机预览视图的自定义监听器
class MyImageSaveListener implements OnImageSavedCallback {

    private final LifecycleOwner lifecycleOwner;
    private String filePath;

    MyImageSaveListener(LifecycleOwner lifecycleOwner) {
        this.lifecycleOwner = lifecycleOwner;
    }

    // 当图像保存成功时，这个方法会被调用
    @Override
    public void onImageSaved(@NonNull ImageInfo imageInfo, @NonNull File file) {
        filePath = file.getAbsolutePath(); // 获取到图片文件的绝对路径
        logDebug("Image saved at: " + filePath);

        // 关闭相机和预览，如果有必要的话
        if (lifecycleOwner.getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.DESTROYED)) {
            stopCamera(lifecycleOwner);
        } else {
            lifecycleOwner.getLifecycle().postponeUntil(Lifecycle.Event.ON_DESTROY)
                    .doOnEvent(new Runnable() {
                        @Override
                        public void run() {
                            stopCamera(lifecycleOwner);
                        }
                    });
        }
    }

    // 停止相机功能
    private void stopCamera(LifecycleOwner owner) {
        Preview preview = ((MyCameraProvider) owner).preview;
        preview.stop();
        ImageCapture capture = ((MyCameraProvider) owner).capture;
        capture.close();
    }

    // 自定义log方法，用于打印日志
    private void logDebug(String message) {
        Log.d("CameraApp", "Debug: " + message);
    }
}

// 使用自定义监听器
public class MainActivity extends AppCompatActivity {

    private MyCameraProvider cameraProvider;

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

        // 初始化CameraX
        cameraProvider = new MyCameraProvider(this);
        Preview preview = cameraProvider.getPreview();

        // 将自定义监听器绑定到ImageCapture
        ImageCapture capture = cameraProvider.getCapture();
        capture.addImageSavedListener(new MyImageSaveListener(this));

        // 启动预览
        previewwart();
    }

    // ...其他相关生命周期管理和UI处理

    // 假设有一个提供CameraX功能的类，例如MyCameraProvider
    // 这里省略了具体的实现细节
    class MyCameraProvider {
        private Preview preview;
        private ImageCapture capture;

        // ... 构造函数、getPreview() 和 getCapture() 的实现等
    }

}