Android DialogFragment宽度

 /**
     * 这样可以设置全屏显示 dialogFragment
     *
     * @param savedInstanceState
     */
    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        super.onActivityCreated(savedInstanceState);
        getDialog().getWindow().setBackgroundDrawable(new ColorDrawable(0x00000000));
        getDialog().getWindow().setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.MATCH_PARENT);
    }