在 Android 的 Toast 中居中文本
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Center text in a toast in Android
提问by Sonoman
I was wondering if there was a way to display all text in a toast to be centered. For instance, I have a toast that has 2 lines of text in it. For purely aesthetic reasons, I would like the text to center-aligned instead of left-aligned. I've looked through the documentation and can't find anything about it. Is there a simple way to do this that I have missed?
我想知道是否有办法在吐司中显示所有文本以使其居中。例如，我有一个吐司，里面有 2 行文本。纯粹出于审美原因，我希望文本居中对齐而不是左对齐。我已经浏览了文档，但找不到任何关于它的信息。有没有一种简单的方法可以做到这一点，我错过了？
Thanks Chris
谢谢克里斯
采纳答案by Sameer Segal
Use the Toast's setView(view)function to supply a Viewwith Gravity.CENTER.
使用 Toast 的setView(view)函数提供一个Viewwith Gravity.CENTER。
回答by Marc
Adapted from another answer:
改编自另一个答案：
Toast toast = Toast.makeText(this, "Centered\nmessage", Toast.LENGTH_SHORT);
TextView v = (TextView) toast.getView().findViewById(android.R.id.message);
if( v != null) v.setGravity(Gravity.CENTER);
toast.show();
回答by Sephy
Toast is built on a TextView and the default gravity of it is left aligned. So, you need to create your own TextView like this for instance :
Toast 建立在 TextView 之上，它的默认重力是左对齐的。因此，您需要像这样创建自己的 TextView，例如：
<TextView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center_vertical|center_horizontal"
android:text="all the text you want"
/>
And you assign the TextView to the Toast like this :
然后将 TextView 分配给 Toast，如下所示：
Toast t = new Toast(yourContext);
t.setView(yourNewTextView);
回答by Mikhail
It is dirty hack, but
这是肮脏的黑客，但是
((TextView)((LinearLayout)toast.getView()).getChildAt(0))
.setGravity(Gravity.CENTER_HORIZONTAL);
回答by YetAnotherUser
Without the hacks:
没有黑客：
String text = "Some text";
Spannable centeredText = new SpannableString(text);
centeredText.setSpan(new AlignmentSpan.Standard(Layout.Alignment.ALIGN_CENTER),
0, text.length() - 1,
Spannable.SPAN_INCLUSIVE_INCLUSIVE);
Toast.makeText(getActivity(), centeredText, Toast.LENGTH_LONG).show();
There are also another alignments besides center.
除了中心之外，还有另一种对齐方式。
回答by serj
Toast toast = Toast.makeText(this, "Message", Toast.LENGTH_SHORT);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
回答by imbryk
Not saing that findViewById(android.R.id.message)is wrong, but just in case there are (future?) implementation differences I myself used a bit differen approach:
不是说这findViewById(android.R.id.message)是错误的，但以防万一（未来？）实现差异，我自己使用了一些不同的方法：
void centerText(View view) {
if( view instanceof TextView){
((TextView) view).setGravity(Gravity.CENTER);
}else if( view instanceof ViewGroup){
ViewGroup group = (ViewGroup) view;
int n = group.getChildCount();
for( int i = 0; i<n; i++ ){
centerText(group.getChildAt(i));
}
}
}
and then:
进而：
Toast t = Toast.makeText(context, msg,Toast.LENGTH_SHORT);
centerText(t.getView());
t.show();
回答by Kumar VL
It is work for me:
这对我来说是工作：
Toast toast = Toast.makeText(context, message, Toast.LENGTH_SHORT);
toast.setGravity(Gravity.CENTER| Gravity.BOTTOM, 0, 20);
toast.show();
回答by vishnu benny
In kotlin:
在科特林：
fun makeToast(context: Context, resId: Int) {
val toast = Toast.makeText(context, resId, Toast.LENGTH_SHORT)
val view = toast.view.findViewById<TextView>(android.R.id.message)
view?.let {
view.gravity = Gravity.CENTER
}
toast.show()
}
回答by Muhamed Huseinba?i?
This variation is with using LinearLayout. :)
这种变化与使用 LinearLayout 有关。:)
Toast SampleToast = Toast.makeText(this, "This is the example of centered text.\nIt is multiline text.", Toast.LENGTH_SHORT);
LinearLayout OurLayout = (LinearLayout) SampleToast.getView();
if (OurLayout.getChildCount() > 0)
{
TextView SampleView = (TextView) OurLayout.getChildAt(0);
SampleView.setGravity(Gravity.CENTER_VERTICAL | Gravity.CENTER_HORIZONTAL);
}
SampleToast.show();
