8. 利用反射机制, ListArray,intent来实现多Activity的切换

package com.example.thenewboston;

import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class Menu extends ListActivity{

  //classes里面存放的都是其他Activity的name
private String classes[] = {"MainActivity", "Splash", "example2", "example3", "example4", "example5"}; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); //利用ListAdapter将classes与onListItemClick()关联 setListAdapter(new ArrayAdapter<String>(Menu.this, android.R.layout.simple_list_item_1, classes)); }
@Override
protected void onListItemClick(ListView l, View v, int position, long id) { // TODO Auto-generated method stub super.onListItemClick(l, v, position, id);
     //每当click的时候可以得到所click的Activity name在Array中的position String cheese
= classes[position]; try {
        //利用反射找到Class类 Class ourClass
= Class.forName("com.example.thenewboston."+cheese);
        //将这个class传递给Intent Intent intent
= new Intent(Menu.this, ourClass);
        //start activity startActivity(intent); }
catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ } } }

 

posted @ 2013-11-21 06:29  Zhentiw  阅读(209)  评论(0编辑  收藏  举报