如果用户在输出对话框中选择“确定”,我想更改班级中的首选项。为此,我在课堂上实现了这个方法:
if (basalcor != basal) {
FragmentManager fragmentManager = getFragmentManager();
ChangeBasalDialog dialogo = new ChangeBasalDialog(basal);
dialogo.show(fragmentManager, "tagbasal");
if (dialogo.check == true) {
String ok= "Basal factor changed succesfully";
SharedPreferences.Editor prefsEditor = myprefs.edit();
if (basalMorFrame == true) {
prefsEditor.putString("basalMor", String.valueOf(basal));
prefsEditor.commit();
Toast toast=Toast.makeText(Mymeasures.this, ok, Toast.LENGTH_SHORT);
toast.show();
}
if (basalNiFrame == true) {
prefsEditor.putString("basalNi",
String.valueOf(basal));
prefsEditor.commit();
Toast toast=Toast.makeText(Mymeasures.this, ok, Toast.LENGTH_SHORT);
toast.show();
}
}
}
这是 ChangeBasalDialog 类:
public class ChangeBasalDialog extends DialogFragment{
double basal=0;
boolean check=false;
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder =
new AlertDialog.Builder(getActivity());
builder.setMessage("The system recommends you now a new Basal factor ("+String.valueOf(basal)+"). Do you want to set the new one as default?")
.setTitle("New Basal recommendation avaliable")
.setPositiveButton("Yes, i want", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
check=true;
dialog.cancel();
}
})
.setNegativeButton("No, I'll keep my old value", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
return builder.create();
}
public ChangeBasalDialog (double a){
basal=a;
}
}
问题是即使我按确定,dialogo.check 总是错误的,然后我永远无法更改我的偏好。当我按下 OK 按钮时,我只想让它返回 dialogo.check=true 但我已经尝试了一切,但我根本看不到它。提前致谢