对话框工具类

public ProgressDialog getProgressDialog(String title, String content) {
     //实例化进度条对话框ProgressDialog
     ProgressDialog dialog=new ProgressDialog(this);
     
     //可以不显示标题
     dialog.setTitle(title);
     dialog.setIndeterminate(true);
     dialog.setMessage(content);
     dialog.setCancelable(true);
     return dialog;
    }

 

Dialog dialog = getProgressDialog("", "正在加载天气...");
     dialog.show();