如何在mvvm android中处理异常并将异常传递给我们视图

public class MyViewModel extends ViewModel {
    private MutableLiveData<Throwable> exceptionLiveData = new MutableLiveData<>();

    public LiveData<Throwable> getExceptionLiveData() {
        return exceptionLiveData;
    }

    public void performSomeOperation() {
        try {
            // 执行可能引发异常的操作
        } catch (Exception e) {
            exceptionLiveData.setValue(e);
        }
    }
}

public class MyActivity extends AppCompatActivity {
    private MyViewModel viewModel;

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

        viewModel = ViewModelProviders.of(this).get(MyViewModel.class);

        viewModel.getExceptionLiveData().observe(this, new Observer<Throwable>() {
            @Override
            public void onChanged(Throwable throwable) {
                // 处理异常，例如显示错误消息
            }
        });
    }

    private void performSomeAction() {
        viewModel.performSomeOperation();
    }
}