配置DialogFragment的位置

public class MyDialogFragment extends DialogFragment {
    
    @NonNull
    @Override
    public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        builder.setTitle("Dialog Title")
                .setMessage("Dialog Message")
                .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        // 点击确定按钮的逻辑处理
                    }
                })
                .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        // 点击取消按钮的逻辑处理
                    }
                });

        // 设置Dialog的位置
        WindowManager.LayoutParams layoutParams = new WindowManager.LayoutParams();
        layoutParams.gravity = Gravity.CENTER; // 设置Dialog在屏幕中央显示
        builder.getWindow().setAttributes(layoutParams);

        return builder.create();
    }
}

MyDialogFragment dialogFragment = new MyDialogFragment();
dialogFragment.show(getSupportFragmentManager(), "dialog");