抖动使网络图像全幅显示

Question

我有这张卡，我想使任何图像都占据该卡的全宽，我尝试将width设置为double.infinity和3000，但是它不起作用。我也想在图像的顶部写上文字吗？如果这样做会影响应用程序性能吗？

 return Card(
            clipBehavior: Clip.antiAlias,
            elevation: 5,
            margin: EdgeInsets.fromLTRB(10, 20, 10, 24),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: <Widget>[
                new Expanded(
                  flex: 8,
                  child: new Container(
                    width: double.infinity,
                    child: ClipRRect(
                      borderRadius: BorderRadius.circular(4.0),
                      child: CachedNetworkImage(
                        fadeInDuration: Duration(milliseconds: 2000),
                        width: 3000,
                        imageUrl:
                            'https://images.alphacoders.com/560/thumb-350-560228.jpg',
                        placeholder: (context, url) =>
                            new CircularProgressIndicator(),
                      ),
                    ),
                  ),
                ),
                new Expanded(
                    flex: 2,
                    child: new Container(
                      child: MaterialButton(
                        minWidth: double.infinity,
                        color: Color(orange),
                        onPressed: () {},
                        child: Text(
                          'Read More',
                          style: TextStyle(color: Colors.white),
                        ),
                      ),
                      color: Colors.green,
                    ))
              ],
            ),
          );

Answer 1

#include <iostream>
#include <string>
#include <fstream>
using namespace std;

int main(int argc, char **argv)
{
    ifstream inFile;
    ofstream outFile;

    string name;
    int x,y,z;

    outFile.open("C:\\Users\\luked\\Desktop\\Test.txt");
    outFile << 5 << " " << 10 << " " << 15 << endl << "My name is Luke";
    outFile.close();

    inFile.open("C:\\Users\\luked\\Desktop\\Test.txt");
    inFile >> x >> y >> z;
    getline(inFile, name);
    cout << x  << " " << y << " " << z << " " << endl << name;

    return 0;
}

Answer 2

如果要使其宽度合适

改为使用Boxfit.fitWidth