Android学习之Snackbar使用文档翻译

Snackbar出来很久了，在我的理解就是取代Toast的，它显示在屏幕底部，更简洁，还提供了点击事件

看了这篇很简单，就翻译一下，大家不要吐槽

文章来源：

http://guides.codepath.com/android/Displaying-the-Snackbar#overview

Snackbars用于展示在屏幕底部，包含一个文本和单击事件，会自动退出当时间超出近似toast的时间。Snackbars 可以通过用户或者其他的动作让它比简单的Toast更具活力，然后，api很相似。

Snackbars are shown on the bottom of the screen and contain text with an optional single action. They automatically fade out after enough time similar to a toast. Snackbars can be swiped away by the user or contain other actions making them more powerful than simple toasts. However, the API is very familiar.

现在Snackbars在设备底部，文本在右边

简单的Snackbars

确保支持Design Support Library 是第一步。创建Snackbars用make，设置显示用.show().

Make sure to follow the Design Support Library setup instructions first.

Create a snackbar using make , setting an optional action and then call .show() :

Snackbar.make(parentView, R.string.snackbar_text, Snackbar.LENGTH_LONG)
  .setAction(R.string.snackbar_action, myOnClickListener)
  .show(); // Don’t forget to show!

跟Toast很相似。

不同于Toast的一个地方是第一个参数是一个View，而不是Context。Snackbar用这个参数走父层次的检索CoordinatorLayout, FrameLayout，或者更顶端的布局。无论谁先来，添加CoordinatorLayout会对浮动按钮更有帮助性，按钮需要移动来创造空间来展示Snackbar

在最近更新支持库中，你可以指定LENGTH_INDEFINITE来持续展示Snackbar直到它消失或者另外一个展示

One difference from using Toasts from Snackbars is that the first parameter requires a View instead of Context. The snackbar uses this parameter to walk up the parent’s hierarchy searching for a CoordinatorLayout, FrameLayout, or the top-most container layout, whichever comes first. Adding a CoordinatorLayout in the view hierarchy is helpful in cases where the floating action buttons needs to moved to make room for displaying the Snackbar as discussed in this guide.

In a recent update of the support library, you can now specify LENGTH_INDEFINITE that will continue to show the Snackbar until it is dismissed or another one is shown:

Snackbar.make(parentView, R.string.snackbar_text, Snackbar.LENGTH_INDEFINITE).show();

配置选项

附加选项被用于配置snackbar例如setActionTextColor 和setDuration

Additional options can be used to configure the snackbar such a setActionTextColor and setDuration :

Snackbar.make(parentView, R.string.snackbar_text, Snackbar.LENGTH_LONG)
 .setAction(R.string.snackbar_action, myOnClickListener)  // action text on the right side
 .setActionTextColor(R.color.green)
 .setDuration(3000).show();

这就是全部

引用：

http://android-developers.blogspot.com/2015/05/android-design-support-library.html
http://developer.android.com/reference/android/support/design/widget/Snackbar.html
http://www.google.com/design/spec/components/snackbars-toasts.html