service中通知显示布局和隐藏布局

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刚开始想了很多，service与activity通信，service获取activity的布局和id控制显示，最后解决办法

service

 UIUtils.showLoading();//直接调用外部方法

public class UIUtils {
  public static BaseActivity currentAct;
  private static AlertDialog mDialog;

    public static void showLoading() {
    //添加布局
        mDialog = new AlertDialog.Builder(currentAct, R.style.dialog1).setContentView(R.layout.loading_view)
                .setWidthAndHeight(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)
                .show();

    }
}

BaseActivity的onResume

  @Override
    protected void onResume(){
        super.onResume();
        UIUtils.currentAct = this;
    }