floating-action-button

来源： https://stackoverflow.com/questions/60642329/why-does-the-material-fab-not-change-colors-when-disabled

来源： https://stackoverflow.com/questions/60642329/why-does-the-material-fab-not-change-colors-when-disabled

来源： https://stackoverflow.com/questions/60642329/why-does-the-material-fab-not-change-colors-when-disabled

来源： https://stackoverflow.com/questions/60426073/floating-action-button-not-showing-vector-asset

问题 I want to implement the Extended FAB button in the format mentioned on the material website (https://kstatic.googleusercontent.com/files/8f9b57829c943c97be7c4b2485cf678f041dfe7c7ef523cfb2e97f1aeee21431f83d98cc07befeeed904fabb258298e3a7ac95f9da5d3da7a4adcff658cea851) https://material.io/components/buttons-floating-action-button#types-of-transitions Kindly help on how to achieve the same. 回答1: You can use the Material motion and the Transition between Views. For example define in your layout:

问题 Is it possible to make the FloatingActionButton in the centre instead of the right side? import 'package:flutter/material.dart'; import 'number.dart'; import 'keyboard.dart'; class ContaPage extends StatelessWidget { @override Widget build(BuildContext context) => new Scaffold( body: new Column( children: <Widget>[ new Number(), new Keyboard(), ], ), floatingActionButton: new FloatingActionButton( elevation: 0.0, child: new Icon(Icons.check), backgroundColor: new Color(0xFFE57373), onPressed:

问题 I have bottom navigation bar with center item that looks like on this picture: How to implement such a thing in Flutter? I found that every icon that I put into BottomNavigatonBarItem is fitted inside navigation bar's bounds. But I need it to be hanged out above. 回答1: You can a Stack to display widgets on the top of each others. Combined with the property overflow : Overflow.visible , and an alignment that fits your need. The following example will achieve thing as in your picture : A

问题 I have bottom navigation bar with center item that looks like on this picture: How to implement such a thing in Flutter? I found that every icon that I put into BottomNavigatonBarItem is fitted inside navigation bar's bounds. But I need it to be hanged out above. 回答1: You can a Stack to display widgets on the top of each others. Combined with the property overflow : Overflow.visible , and an alignment that fits your need. The following example will achieve thing as in your picture : A

问题 My app crashed because Error inflating class android.support.design.widget.FloatingActionButton This is my code in the XML <android.support.design.widget.FloatingActionButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="bottom|right" android:layout_margin="16dp" android:src="@drawable/icon_right" app:backgroundTint="@color/green" android:onClick="previewphoto" app:layout_anchorGravity="bottom|right|end" /> and here is my gradle compile 'com

问题 My app crashed because Error inflating class android.support.design.widget.FloatingActionButton This is my code in the XML <android.support.design.widget.FloatingActionButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="bottom|right" android:layout_margin="16dp" android:src="@drawable/icon_right" app:backgroundTint="@color/green" android:onClick="previewphoto" app:layout_anchorGravity="bottom|right|end" /> and here is my gradle compile 'com