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[英]How do I add an Alert Dialog to my Dice Game when a certain score is reached? Java, Android Studio
[英]How can I tell when my Android alert dialog is cancelled?
这是我的警报:
new AlertDialog.Builder(Activity.this)
.setMessage("You have unsaved text. Are you sure you want to leave?")
.setCancelable(true)
.setNegativeButton("Leave", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id)
{
finish();
}
})
.setPositiveButton("Stay", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {}
}).show();
请注意我如何允许警报取消: .setCancelable(true)
一旦用户按下后退按钮取消警报,我该如何运行一些代码?
根据Android网站上的AlertDialog.Builder文档,您可以使用setOnCancelListener(DialogInterface.OnCancelListener onCancelListener)方法来处理取消对话框的时间。
.setOnCancelListener(new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog)
{
// do what you need when the dialog is cancelled
}
})
所以,你的代码将改为:
new AlertDialog.Builder(Activity.this)
.setMessage("You have unsaved text. Are you sure you want to leave?")
.setCancelable(true)
.setOnCancelListener(new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog)
{
// do what you need when the dialog is cancelled
}
})
.setNegativeButton("Leave", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id)
{
finish();
}
})
.setPositiveButton("Stay", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {}
}).show();
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