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我想打一个关于对话框在我的应用程序,我希望它有默认的对话框的按钮,我决定使用DialogFragment,所以我做了这样的DialogFragment负按钮
public class AboutDialog extends DialogFragment {
public AboutDialog() {
// Empty constructor for fragment
}
@Override
@NonNull
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle("About");
builder.setNegativeButton("Close", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dismiss();
}
});
return builder.create();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.about_dialog, container);
getDialog().setTitle(getString(R.string.action_about));
return rootView;
}
}
然后从活动这样
AboutDialog about = new AboutDialog();
about.show(getSupportFragmentManager(), null);
调用它,然后我得到这个错误
android.util.AndroidRuntimeException: requestFeature() must be called before adding content
我该如何解决这个问题?
您可以发布您的活动代码吗? – 2014-09-19 09:13:22
活动究竟是什么?这在onOptionsItemSelected中被调用 – 2014-09-19 09:14:32
oncreate您的活动的代码 – 2014-09-19 09:19:38