效果图:
原始界面 点击按钮运行 运行后界面
实现代码:
public class MainActivity extends AppCompatActivity { private Button bt; private TextView tv; public ProgressDialog myDialog; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); bt=(Button)findViewById(R.id.button); tv=(TextView)findViewById(R.id.text); bt.setOnClickListener(new myOnClickListener()); } private class myOnClickListener implements View.OnClickListener{ @Override public void onClick(View v) { final CharSequence strDialogTitle=getString(R.string.app_about); final CharSequence strDialogBody=getString(R.string.app_msg); //显示对话框 myDialog=ProgressDialog.show(MainActivity.this,strDialogTitle,strDialogBody,true); tv.setText(R.string.result); //创建一个空线程模拟运行 new Thread(){ public void run(){ try{ //设置线程睡眠3秒 sleep(3000); }catch (Exception e){ e.printStackTrace(); } finally { //删除所创建的myDialog对象 myDialog.dismiss(); } } }.start();//开始运行线程 } }}
时间: 2024-08-10 21:19:26