如何將std :: vector <uint8_t>轉換爲QByteArray？

Question

我想從std :: vector創建QByteArray ..我試過了;

std::vector<uint8_t> buf; 
QByteArray img = new QByteArray(reinterpret_cast<const char>(buf), buf.size()); 

但它給出了錯誤;

error: invalid cast from type 'std::vector<unsigned char, std::allocator<unsigned char> >' to type 'const char' 

Answer 1

你需要投buf.data()，而不是buf：

QByteArray* img = new QByteArray(reinterpret_cast<const char*>(buf.data()), buf.size());