我在Android (Java)编程中使用以下代码:
public static MessageBoxResult showOk(
Context context, String title, String message, String okMessage)
{
okDialogResult = MessageBoxResult.Closed;
// make a handler that throws a runtime exception when a message is received
final Handler handler = new Handler()
{
@Override
public void handleMessage(Message mesg)
{
throw new RuntimeException();
}
};
AlertDialog.Builder alert = new AlertDialog.Builder(context);
alert.setTitle(title);
alert.setMessage(message);
alert.setPositiveButton(okMessage, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
okDialogResult = MessageBoxResult.Positive;
handler.sendMessage(handler.obtainMessage());
}
});
AlertDialog dialog = alert.show();
// align button to center
Button b = (Button) dialog.findViewById(android.R.id.button1);
b.setGravity(Gravity.CENTER_HORIZONTAL);
// loop till a runtime exception is triggered.
try { Looper.loop(); }
catch(RuntimeException e2) {}
return okDialogResult;
}
我的问题是如何使按钮居中?正如你所看到的,我尝试使用Gravity.CENTER_HORIZONTAL
(也是.CENTER
)将按钮对齐到中心,但是什么也没有改变。按钮几乎就在正确的位置。
发布于 2015-11-30 22:59:40
这对我很有效:
final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity(), R.style.AppCompatAlertDialogStyle);
builder.setCancelable(true);
builder.setTitle(title);
builder.setMessage(message);
builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
final AlertDialog dialog = builder.create();
dialog.show(); //show() should be called before dialog.getButton().
final Button positiveButton = dialog.getButton(AlertDialog.BUTTON_POSITIVE);
LinearLayout.LayoutParams positiveButtonLL = (LinearLayout.LayoutParams) positiveButton.getLayoutParams();
positiveButtonLL.gravity = Gravity.CENTER;
positiveButton.setLayoutParams(positiveButtonLL);
发布于 2016-11-23 00:53:36
使用crtn的方法,但不是更改LayoutParam's
重力,而是将其宽度更改为ViewGroup.LayoutParams.MATCH_PARENT;
发布于 2017-08-27 00:22:17
如果你想同时拥有正负按钮(Large & Center),你可以这样做:
AlertDialog alertDialog = new AlertDialog.Builder(this).create();
alertDialog.setTitle("Title");
alertDialog.setMessage("Message");
alertDialog.setButton(AlertDialog.BUTTON_POSITIVE, "Yes",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
alertDialog.setButton(AlertDialog.BUTTON_NEGATIVE, "No",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
alertDialog.show();
Button btnPositive = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE);
Button btnNegative = alertDialog.getButton(AlertDialog.BUTTON_NEGATIVE);
LinearLayout.LayoutParams layoutParams = (LinearLayout.LayoutParams) btnPositive.getLayoutParams();
layoutParams.weight = 10;
btnPositive.setLayoutParams(layoutParams);
btnNegative.setLayoutParams(layoutParams);
https://stackoverflow.com/questions/30743038
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