<span style="font-size:18px;">package com.fmy.example1; import android.app.Activity; import android.app.ProgressDialog; import android.os.Bundle; import android.view.View; public class MainActivity extends Activity { private ProgressDialog pro; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } public void click(View v){ switch (v.getId()) { case R.id.first: //创建一个progressDialog 传入上下文 pro = new ProgressDialog(this); //设置标题 pro.setTitle("下载"); //设置图片 pro.setIcon(R.drawable.ic_launcher); //设置样式 这是有水平条的 pro.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); pro.show(); break; case R.id.second: pro = new ProgressDialog(this); pro.setTitle("下载"); pro.setIcon(R.drawable.ic_launcher); //一个转圈的进图条默认<span style="display: none; 0px; height: 0px;" id="transmark"></span> pro.setProgressStyle(ProgressDialog.STYLE_SPINNER); pro.show(); break; default: break; } } } </span>