blocks|key|1006659|text|创建您自己的TextView对象，然后将其作为视图提供给弹出窗口构建器：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1006660|AlertDialog.Builder+popupBuilder+=+new+AlertDialog.Builder(this);
TextView+myMsg+=+new+TextView(this);
myMsg.setText("Central");
myMsg.setGravity(Gravity.CENTER_HORIZONTAL);
popupBuilder.setView(myMsg);|code-block|syntax|javascript|1006661|您可以控制所有其他文本参数(样式、颜色、大小...)。要控制页边距，您可以编程创建LinearLayout，设置LayoutParams，然后将TextView放入其中。|1006662|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Create your own TextView object and then supply it to popup builder as View:

<pre><code>AlertDialog.Builder popupBuilder = new AlertDialog.Builder(this);
TextView myMsg = new TextView(this);
myMsg.setText("Central");
myMsg.setGravity(Gravity.CENTER_HORIZONTAL);
popupBuilder.setView(myMsg);
</code></pre>

You can control all other text parameters (style, color, size ...). To control margins you may programatically create LinearLayout, set LayoutParams, and then put TextView into it.

blocks|key|1006811|text|当然，您始终可以设置原始文本视图的重力。这使您不必担心格式化和填充。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1006812|例如|1006813|AlertDialog.Builder+builder+=+new+AlertDialog.Builder(this);
builder.setTitle("Title");
builder.setMessage("Message");
builder.setPositiveButton("OK",+null);
AlertDialog+dialog+=+builder.show();

//+Must+call+show()+prior+to+fetching+text+view
TextView+messageView+=+(TextView)dialog.findViewById(android.R.id.message);
messageView.setGravity(Gravity.CENTER);|code-block|syntax|javascript|1006814|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Of course, you can always set the gravity of the original text view. This allows you to not have to worry about formatting and padding. 

For example

<pre><code>AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Title");
builder.setMessage("Message");
builder.setPositiveButton("OK", null);
AlertDialog dialog = builder.show();

// Must call show() prior to fetching text view
TextView messageView = (TextView)dialog.findViewById(android.R.id.message);
messageView.setGravity(Gravity.CENTER);
</code></pre>

blocks|key|792934|text|根据Chase的回答，下面是如何将标题居中的方法。我认为这是最简单的方法。我不明白为什么android没有默认居中或者让它成为一个简单的构造函数参数。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|792935|AlertDialog.Builder+builder+=+new+AlertDialog.Builder(context);
builder.setTitle("My+Title");
builder.setMessage("My+message");
builder.setPositiveButton("OK",+listener);
AlertDialog+dialog+=+builder.show();

//+Must+call+show()+prior+to+fetching+views
TextView+messageView+=+(TextView)dialog.findViewById(android.R.id.message);
messageView.setGravity(Gravity.CENTER);

TextView+titleView+=+(TextView)dialog.findViewById(context.getResources().getIdentifier("alertTitle",+"id",+"android"));
if+(titleView+!=+null)+{
++++titleView.setGravity(Gravity.CENTER);
}|code-block|syntax|javascript|792936|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Building off of Chase's answer, here's how to also center the title. I think this is the easiest way. Why android doesn't center by default or make it a simple constructor param is beyond me.

<pre><code>AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("My Title");
builder.setMessage("My message");
builder.setPositiveButton("OK", listener);
AlertDialog dialog = builder.show();

// Must call show() prior to fetching views
TextView messageView = (TextView)dialog.findViewById(android.R.id.message);
messageView.setGravity(Gravity.CENTER);

TextView titleView = (TextView)dialog.findViewById(context.getResources().getIdentifier("alertTitle", "id", "android"));
if (titleView != null) {
 titleView.setGravity(Gravity.CENTER);
}
</code></pre>

blocks|key|792872|text|我们可以像这样使用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|792873|public+static+void+showAlert(Activity+activity,+String+message)+{
++TextView+title+=+new+TextView(activity);

++title.setText("Your+Title+Here");
++title.setPadding(10,+10,+10,+10);
++title.setGravity(Gravity.CENTER);
++title.setTextColor(Color.WHITE);
++title.setTextSize(20);

++AlertDialog.Builder+builder+=+new+AlertDialog.Builder(activity);
++builder.setCustomTitle(title);
++builder.setMessage(message);
++builder.setCancelable(false);
++builder.setNegativeButton("OK",+new+DialogInterface.OnClickListener()+{
++++public+void+onClick(DialogInterface+dialog,+int+id)+{
++++++dialog.cancel();
++++}
++});

++AlertDialog+alert+=+builder.show();
++TextView+messageText+=+(TextView)alert.findViewById(android.R.id.message);
++messageText.setGravity(Gravity.CENTER);
++messageText.setTextColor(Color.RED);
}|code-block|syntax|javascript|792874|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

we can use as like.

<pre><code>public static void showAlert(Activity activity, String message) {
 TextView title = new TextView(activity);

 title.setText("Your Title Here");
 title.setPadding(10, 10, 10, 10);
 title.setGravity(Gravity.CENTER);
 title.setTextColor(Color.WHITE);
 title.setTextSize(20);

 AlertDialog.Builder builder = new AlertDialog.Builder(activity);
 builder.setCustomTitle(title);
 builder.setMessage(message);
 builder.setCancelable(false);
 builder.setNegativeButton("OK", new DialogInterface.OnClickListener() {
 public void onClick(DialogInterface dialog, int id) {
 dialog.cancel();
 }
 });

 AlertDialog alert = builder.show();
 TextView messageText = (TextView)alert.findViewById(android.R.id.message);
 messageText.setGravity(Gravity.CENTER);
 messageText.setTextColor(Color.RED);
}
</code></pre>

blocks|key|1006975|text|你可以试试这段代码|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1006976|public+void+Info(){
++++AlertDialog.Builder+builder+=+new+AlertDialog.Builder(this);
++++builder.setTitle("Info+Aplication");
++++builder.setIcon(R.drawable.info_adp);
++++builder.setMessage("Jakarta+Hospital");
++++builder.setCancelable(false);
++++builder.setPositiveButton("Exit",+null);
++++AlertDialog+dialog+=+builder.show();
++++TextView+messageView+=+(TextView)dialog.findViewById(android.R.id.message);
++++messageView.setGravity(Gravity.CENTER);
}|code-block|syntax|javascript|1006977|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

you can try this code
<pre><code>public void Info(){
 AlertDialog.Builder builder = new AlertDialog.Builder(this);
 builder.setTitle(&quot;Info Aplication&quot;);
 builder.setIcon(R.drawable.info_adp);
 builder.setMessage(&quot;Jakarta Hospital&quot;);
 builder.setCancelable(false);
 builder.setPositiveButton(&quot;Exit&quot;, null);
 AlertDialog dialog = builder.show();
 TextView messageView = (TextView)dialog.findViewById(android.R.id.message);
 messageView.setGravity(Gravity.CENTER);
}
</code></pre>

blocks|key|1007027|text|而不使用文本视图。对我很管用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1007028|styles.xml|1007029|<style+name="CustomAlertDialog"+parent="Theme.AppCompat.Light.Dialog.Alert">
++++++++<item+name="android:gravity">center</item>
++++</style>|code-block|syntax|javascript|1007030|警报对话框|1007031|final+AlertDialog+builder+=+new+AlertDialog.Builder(activity,+
R.style.CustomAlertDialog)|1007032|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

without using textview.
worked for me.

styles.xml

<pre><code>&lt;style name="CustomAlertDialog" parent="Theme.AppCompat.Light.Dialog.Alert"&gt;
 &lt;item name="android:gravity"&gt;center&lt;/item&gt;
 &lt;/style&gt;
</code></pre>

Alertdialog

<pre><code>final AlertDialog builder = new AlertDialog.Builder(activity, 
R.style.CustomAlertDialog)
</code></pre>

blocks|key|1006700|text|在你的TextView中试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1006701|android:gravity+=+"center_vertical%7Ccenter"|code-block|syntax|javascript|1006702|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

try this in your TextView:

<pre><code>android:gravity = "center_vertical|center"
</code></pre>

blocks|key|792974|text|只需使用该方法，对话框标题和消息将显示在中心位置：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|792975|公共静态空消息(context+context，String+openDialog){|792976|++++TextView+title+=+new+TextView(context);
++++//+You+Can+Customise+your+Title+here
++++title.setText("Information+Message");
++++title.setBackgroundColor(Color.BLACK);
++++title.setPadding(10,+15,+15,+10);
++++title.setGravity(Gravity.CENTER);
++++title.setTextColor(Color.WHITE);
++++title.setTextSize(22);

++++AlertDialog+alertDialog+=+new+AlertDialog.Builder(context).create();
++++alertDialog.setCustomTitle(title);
++++alertDialog.setMessage(message);

++++alertDialog.setButton("OK",+new+DialogInterface.OnClickListener()+{
++++++++public+void+onClick(DialogInterface+dialog,+int+which)+{

++++++++}
++++});
++++alertDialog.show();

++++//+You+Can+Customise+your+Message+here
++++TextView+messageView+=+(TextView)+alertDialog
++++++++++++.findViewById(android.R.id.message);
++++messageView.setGravity(Gravity.CENTER);

}|code-block|syntax|javascript|792977|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Just use that method and your dialog title and message will appear at center:

public static void openDialog(Context context, String message) {

<pre><code> TextView title = new TextView(context);
 // You Can Customise your Title here
 title.setText("Information Message");
 title.setBackgroundColor(Color.BLACK);
 title.setPadding(10, 15, 15, 10);
 title.setGravity(Gravity.CENTER);
 title.setTextColor(Color.WHITE);
 title.setTextSize(22);

 AlertDialog alertDialog = new AlertDialog.Builder(context).create();
 alertDialog.setCustomTitle(title);
 alertDialog.setMessage(message);

 alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
 public void onClick(DialogInterface dialog, int which) {

 }
 });
 alertDialog.show();

 // You Can Customise your Message here
 TextView messageView = (TextView) alertDialog
 .findViewById(android.R.id.message);
 messageView.setGravity(Gravity.CENTER);

}
</code></pre>

I want the message text within my dialog box to be center aligned.

Center message in android dialog box

我希望对话框中的消息文本居中对齐。

问android对话框中的居中消息
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回答 8

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问android对话框中的居中消息EN

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