如何在特定时间运行异步任务?(我希望每2分钟运行一次)
我尝试使用postDelayed,但它不起作用?
tvData.postDelayed(new Runnable(){
@Override
public void run() {
readWebpage();
}}, 100);
在以上代码中,readwebpage是一个调用异步任务的函数。现在我正在使用以下方法。
public void onCreate(Bundle savedInstanceState) {
readwebapage();
}
public void readWebpage() {
DownloadWebPageTask task = new DownloadWebPageTask();
task.execute("http://www.google.com");
}
private class DownloadWebPageTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... urls) {
String response1 = "";
response1=read();
//read is my another function which does the real work
response1=read();
super.onPostExecute(response1);
return response1;
}
protected void onPostExecute(String result) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
TextView tvData = (TextView) findViewById(R.id.TextView01);
tvData.setText(result);
DownloadWebPageTask task = new DownloadWebPageTask();
task.execute(new String[] { "http://www.google.com" });
}
}
这就是我代码的样子,它能很好地工作,但大问题是它会耗尽我的电池?