AlertDialogFragment.java 文件源码

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    Bundle args = getArguments();
    String title = args.getString(KEY_TITLE);
    String message = args.getString(KEY_MESSAGE);
    String positiveButtonTitle = args.getString(KEY_POSITIVE_BUTTON_TITLE);

    Builder builder = new AlertDialogWrapper.Builder(getActivity())
            .setPositiveButton(positiveButtonTitle, mPositiveListener)
            .setCancelable(false);

    String negativeButtonTitle = args.getString(KEY_NEGATIVE_BUTTON_TITLE);
    if (!TextUtils.isEmpty(negativeButtonTitle)) {
        builder.setNegativeButton(negativeButtonTitle, mNegativeListener);
    }
    if (!TextUtils.isEmpty(title)) {
        builder.setTitle(title);
    }
    if (!TextUtils.isEmpty(message)) {
        builder.setMessage(message);
    }
    return builder.create();
}