Question

这是同时使用定位小部件和对齐小部件的具体示例！但是我在确定使用什么时遇到了问题！尽管最初的问题是相对于其“容器”而不是在屏幕上设置一些FAB的偏移量

Stack(
      children: <Widget>[
        Positioned(left: 0.0, child: Text("Top\nleft")),
        Positioned(bottom: 0.0, child: Text("Bottom\nleft")),
        Positioned(top: 0.0, right: 0.0, child: Text("Top\nright")),
        Positioned(bottom: 0.0, right: 0.0, child: Text("Bottom\nright")),
        Positioned(bottom: 0.0, right: 0.0, child: Text("Bottom\nright")),
        Positioned(left: width / 2, top: height / 2, child: Text("Center")),
        Positioned(top: height / 2, child: Text("Center\nleft")),
        Positioned(top: height / 2, right: 0.0, child: Text("Center\nright")),
        Positioned(left: width / 2, child: Text("Center\ntop")),
        Positioned(left: width / 2, bottom: 0.0, child: Text("Center\nbottom")),
      ],
    )
    Example #2 (Using Align in Stack)

    Stack(
      children: <Widget>[
        Align(alignment: Alignment.center, child: Text("Center"),),
        Align(alignment: Alignment.topRight, child: Text("Top\nRight"),),
        Align(alignment: Alignment.centerRight, child: Text("Center\nRight"),),
        Align(alignment: Alignment.bottomRight, child: Text("Bottom\nRight"),),
        Align(alignment: Alignment.topLeft, child: Text("Top\nLeft"),),
        Align(alignment: Alignment.centerLeft, child: Text("Center\nLeft"),),
        Align(alignment: Alignment.bottomLeft, child: Text("Bottom\nLeft"),),
        Align(alignment: Alignment.topCenter, child: Text("Top\nCenter"),),
        Align(alignment: Alignment.bottomCenter, child: Text("Bottom\nCenter"),),
        Align(alignment: Alignment(0.0, 0.5), child: Text("Custom\nPostition", style: TextStyle(color: Colors.red, fontSize: 20.0, fontWeight: FontWeight.w800),),),
      ],
    );

> Blockquot

e

使用“对齐”或“定位颤振”之间有什么区别

0 个答案: