Android:快速呼叫时不触发Transformations.switchMap

LiveData<Boolean> isQuickCallLiveData = ...; // 快速呼叫LiveData对象
LiveData<String> sourceLiveData = ...; // 源LiveData对象

MediatorLiveData<String> transformedLiveData = new MediatorLiveData<>();
transformedLiveData.addSource(sourceLiveData, value -> {
    if (!isQuickCallLiveData.getValue()) {
        // 执行转换操作
        String transformedValue = transform(value);
        transformedLiveData.setValue(transformedValue);
    }
});

// transformedLiveData即为转换后的LiveData对象

public class CustomLiveData<T> extends LiveData<T> {
    private LiveData<Boolean> isQuickCallLiveData; // 快速呼叫LiveData对象

    public void setIsQuickCallLiveData(LiveData<Boolean> isQuickCallLiveData) {
        this.isQuickCallLiveData = isQuickCallLiveData;
    }

    @Override
    public void setValue(T value) {
        if (isQuickCallLiveData == null || !isQuickCallLiveData.getValue()) {
            super.setValue(value);
        }
    }
}

// 使用自定义LiveData
CustomLiveData<String> transformedLiveData = new CustomLiveData<>();
transformedLiveData.setIsQuickCallLiveData(isQuickCallLiveData); // 设置快速呼叫LiveData对象