为什么敬酒词比它的内容更短的宽度是多少？ [英] Why is the width of toast shorter than its content?

问题描述

我写了包含导航抽屉（里面一个ListView一个简单的片段），和一个模型，并为ListView适配器的活动。有一个ImageView的，并在一个列表项一个TextView，因为它通常是在许多应用程序。这就是我所做的一切，并且都搭载Android Studio自动生成的，其余$ C $活动的CS和片段的类。然后，当我用 Toast.makeText 在活动，结果看起来的这个。

I wrote an activity which contains a navigation drawer (a simple fragment with a ListView inside), and a model and an adapter for the ListView. There is an ImageView and a TextView in a single list item, as it's usually be in many apps. That's all I have done, and the rest codes of the activity and fragment's classes were all generated automatically by Android Studio. Then when I used Toast.makeText in the activity, the result looks as this.

我搜索过这个问题，并使用 Toast.makeText试过（this.getApplicationContext（），...）而不是敬酒。 makeText（这个......），和它的工作。我不知道为什么会出现这种情况，我怎么应该正确解决了这个问题？

I've searched for this question and tried using Toast.makeText(this.getApplicationContext(), ...) instead of Toast.makeText(this, ...), and it worked. I'm wondering why would this happen and how should I solved this problem correctly?

推荐答案

在官方文档它说，一个典型的面包看起来是这样的：

In the official documentation it says that a typical Toast looks like this:

Context context = getApplicationContext();
Toast toast = Toast.makeText(context, text, duration);

我想这是因为这取决于你有类，背景各不相同，因为不是所有的上下文实例都是平等的。

I imagine it is because depending on the class you have, the context varies because not all context instances are created equal.

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