我有一个要使用 AsyncTask 类更新的字符串,这是我的代码:
public class MainActivity extends Activity{
private String str = "oldString";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
getString();
}
private void getString(){
new CustomTask().execute();
}
private class CustomTask extends AsyncTask<Void, Void, String>{
@Override
protected String doInBackground(Void... params) {
// TODO Auto-generated method stub
Log.i("Lesson3", "doInBackground method");
str = "newString";
return "someString";
}
protected void onPostExecute(String s){
Log.i("Lesson3", "onPostExecute method");
}
}
onPostExecute 方法没有被调用,这就是问题所在??
谢谢