摘要：
1：activity_main.xml 2:MainActivity.javapackage com.example.async;import android.os.AsyncTask;import android.os.Bundle;import android.view.View;import android.widget.ProgressBar;import android.widget.TextView;import android.app.Activity;public class MainActivity extends Activity { pri... 阅读全文
摘要：
expandableListView.setOnGroupExpandListener(new OnGroupExpandListener(){ @Override public void onGroupExpand(int groupPosition) { //保证每次只展开一组 int count=expandableListView.getExpandableListAdapter().getGroupCount(); for(int i=0;i<coun... 阅读全文