夏月秋树的个人资料

高安卓开发的进一下，有个空指针异常找不到 package com.example.checkapplication; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.app.ActivityManager; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.ListView; import android.widget.Toast; public class MainActivity extends Activity { private ActivityManager mActivityManager; private int intGetTastCounter = 30; public Button mButton1; public ListView mListView1; public ArrayList arylistTask; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mButton1 = (Button)findViewById(R.id.button1); mListView1 = (ListView)findViewById(R.id.list); mButton1.setOnClickListener(new Button.OnClickListener(){ @Override public void onClick(View v) { // TODO Auto-generated method stub try{ //j对象向系统取得ACTIVITY_SERVICE mActivityManager = (ActivityManager) MainActivity.this.getSystemService(ACTIVITY_SERVICE); arylistTask = new ArrayList<String>(); List<ActivityManager.RunningTaskInfo>mRunningTasks = mActivityManager.getRunningTasks(intGetTastCounter); int i = 1; for(ActivityManager.RunningTaskInfo amTask:mRunningTasks){ arylistTask.add(""+(i++)+": "+ amTask.baseActivity.getClassName()+"(ID=" + amTask.id +")"); } ArrayAdapter aryAdapter1 = new ArrayAdapter<String> (MainActivity.this,R.layout.simple_list_item_1,arylistTask); if(aryAdapter1.getCount()==0){ mMakeTextToast( getResources().getText (R.string.str_err_no_running_task).toString(),true); } else { mListView1.setAdapter(aryAdapter1); } }catch(SecurityException e){ mMakeTextToast( getResources().getText(R.string.str_err_permission).toString(),true ); } } private void mMakeTextToast(String str, boolean islong) { // TODO Auto-generated method stub if(islong==true){ Toast.makeText(MainActivity.this,str, Toast.LENGTH_LONG).show(); } else{ Toast.makeText(MainActivity.this,str, Toast.LENGTH_SHORT).show(); } } }); mListView1.setOnItemSelectedListener (new ListView.OnItemSelectedListener(){ @Override public void onItemSelected(AdapterView<?> parent, View v, int id, long arg3) { // TODO Auto-generated method stub mMakeTextToast(arylistTask.get(id).toString(),false); } private void mMakeTextToast(String str, boolean islong) { // TODO Auto-generated method stub if(islong==true){ Toast.makeText(MainActivity.this,str, Toast.LENGTH_LONG).show(); } else{ Toast.makeText(MainActivity.this,str, Toast.LENGTH_SHORT).show(); } } @Override public void onNothingSelected(AdapterView<?> parent) { // TODO Auto-generated method stub } }); } }

一个空指针异常，找不到了 package com.example.checkapplication; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.app.ActivityManager; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.ListView; import android.widget.Toast; public class MainActivity extends Activity { private ActivityManager mActivityManager; private int intGetTastCounter = 30; public Button mButton1; public ListView mListView1; public ArrayList arylistTask; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mButton1 = (Button)findViewById(R.id.button1); mListView1 = (ListView)findViewById(R.id.list); mButton1.setOnClickListener(new Button.OnClickListener(){ @Override public void onClick(View v) { // TODO Auto-generated method stub try{ //j对象向系统取得ACTIVITY_SERVICE mActivityManager = (ActivityManager) MainActivity.this.getSystemService(ACTIVITY_SERVICE); arylistTask = new ArrayList<String>(); List<ActivityManager.RunningTaskInfo>mRunningTasks = mActivityManager.getRunningTasks(intGetTastCounter); int i = 1; for(ActivityManager.RunningTaskInfo amTask:mRunningTasks){ arylistTask.add(""+(i++)+": "+ amTask.baseActivity.getClassName()+"(ID=" + amTask.id +")"); } ArrayAdapter aryAdapter1 = new ArrayAdapter<String> (MainActivity.this,R.layout.simple_list_item_1,arylistTask); if(aryAdapter1.getCount()==0){ mMakeTextToast( getResources().getText (R.string.str_err_no_running_task).toString(),true); } else { mListView1.setAdapter(aryAdapter1); } }catch(SecurityException e){ mMakeTextToast( getResources().getText(R.string.str_err_permission).toString(),true ); } } private void mMakeTextToast(String str, boolean islong) { // TODO Auto-generated method stub if(islong==true){ Toast.makeText(MainActivity.this,str, Toast.LENGTH_LONG).show(); } else{ Toast.makeText(MainActivity.this,str, Toast.LENGTH_SHORT).show(); } } }); mListView1.setOnItemSelectedListener (new ListView.OnItemSelectedListener(){ @Override public void onItemSelected(AdapterView<?> parent, View v, int id, long arg3) { // TODO Auto-generated method stub mMakeTextToast(arylistTask.get(id).toString(),false); } private void mMakeTextToast(String str, boolean islong) { // TODO Auto-generated method stub if(islong==true){ Toast.makeText(MainActivity.this,str, Toast.LENGTH_LONG).show(); } else{ Toast.makeText(MainActivity.this,str, Toast.LENGTH_SHORT).show(); } } @Override public void onNothingSelected(AdapterView<?> parent) { // TODO Auto-generated method stub } }); } }

【03-28求助】空指针报错，找不到了 package com.example.checkapplication; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.app.ActivityManager; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.ListView; import android.widget.Toast; public class MainActivity extends Activity { private ActivityManager mActivityManager; private int intGetTastCounter = 30; public Button mButton1; public ListView mListView1; public ArrayList arylistTask; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mButton1 = (Button)findViewById(R.id.button1); mListView1 = (ListView)findViewById(R.id.list); mButton1.setOnClickListener(new Button.OnClickListener(){ @Override public void onClick(View v) { // TODO Auto-generated method stub try{ //j对象向系统取得ACTIVITY_SERVICE mActivityManager = (ActivityManager) MainActivity.this.getSystemService(ACTIVITY_SERVICE); arylistTask = new ArrayList<String>(); List<ActivityManager.RunningTaskInfo>mRunningTasks = mActivityManager.getRunningTasks(intGetTastCounter); int i = 1; for(ActivityManager.RunningTaskInfo amTask:mRunningTasks){ arylistTask.add(""+(i++)+": "+ amTask.baseActivity.getClassName()+"(ID=" + amTask.id +")"); } ArrayAdapter aryAdapter1 = new ArrayAdapter<String> (MainActivity.this,R.layout.simple_list_item_1,arylistTask); if(aryAdapter1.getCount()==0){ mMakeTextToast( getResources().getText (R.string.str_err_no_running_task).toString(),true); } else { mListView1.setAdapter(aryAdapter1); } }catch(SecurityException e){ mMakeTextToast( getResources().getText(R.string.str_err_permission).toString(),true ); } } private void mMakeTextToast(String str, boolean islong) { // TODO Auto-generated method stub if(islong==true){ Toast.makeText(MainActivity.this,str, Toast.LENGTH_LONG).show(); } else{ Toast.makeText(MainActivity.this,str, Toast.LENGTH_SHORT).show(); } } }); mListView1.setOnItemSelectedListener (new ListView.OnItemSelectedListener(){ @Override public void onItemSelected(AdapterView<?> parent, View v, int id, long arg3) { // TODO Auto-generated method stub mMakeTextToast(arylistTask.get(id).toString(),false); } private void mMakeTextToast(String str, boolean islong) { // TODO Auto-generated method stub if(islong==true){ Toast.makeText(MainActivity.this,str, Toast.LENGTH_LONG).show(); } else{ Toast.makeText(MainActivity.this,str, Toast.LENGTH_SHORT).show(); } } @Override public void onNothingSelected(AdapterView<?> parent) { // TODO Auto-generated method stub } }); } }

大神求教为什么这么多错误

大神求教，小弟第一次搞安卓，遇到了问题为什么这么多错误，我只是建了个安卓项目

大神求教，小弟第一次搞安卓，遇到了问题谁能告诉我哪里来的这些错误

谁能给我一个稳定android开发环境 ADT新版不知道为什么，创建项目后总是找不到Mainactivity,所以总是用手打，而且有时候ADB还老被占用，运行都运行不了，android stdio 还不一样，所以现在不知怎么办了

搞android开发的人进，谢谢谁能给我推荐一个稳定的android开发环境，ADT 新版总是有Bug,项目文件activity 打不开，android stdio,又不一样，所以我现在我不知道用哪个好？谁能推荐一个

C# 从数据库查询问题

C#的一个赋值问题我使用了几个textbox ，想把里面的.text 赋值给class house 的几个public 参数；但是一直进不去

使用界面输出数据库问题，求教 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using System.Data.SqlClient; namespace MrCy { public partial class checkinfo : Form { public checkinfo() { InitializeComponent(); } string id; string name; string cardnum; string sex; string age; string phone; public void checkinfo_Load(object sender, EventArgs e) { id = txtID.Text; } public void button2_Click(object sender, EventArgs e) { string source = "Data Source = (localdb)\\Projects;Initial Catalog = db_MrCy"; SqlConnection conn = new SqlConnection(source); conn.Open(); SqlCommand thisCommand = conn.CreateCommand(); thisCommand.CommandText = "SELECT name,cardNum,sex,age,phone from tb_waiter WHERE ID =id"; MessageBox.Show("success"); SqlDataReader thisReader = thisCommand.ExecuteReader(); name = thisReader["name"].ToString(); MessageBox.Show(name); cardnum = thisReader["cardnum"].ToString(); sex = thisReader["sex"].ToString(); age = thisReader["age"].ToString(); phone = thisReader["phone"].ToString(); thisReader.Close(); conn.Close(); txtNM.Text = name; txtSex.Text = sex; txtCD.Text = cardnum; txtAGE.Text = age; txtPHO.Text = phone; } } }

ADO 数据库问题，求助哪里有问题？

土豆电视剧2013电视剧年终盘点求背景音乐名字求背景音乐名字。谢谢

谁来帮我看看我这个hellowin为什么wndclass 不能注册 // NewHelloWin_myself.cpp : Defines the entry point for the application. // #include<windows.h> #pragma comment(lib,"Winmm.lib") LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam); int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { static TCHAR szAppname[] = TEXT(" my first windows programm"); HWND hwnd; MSG msg; WNDCLASS wndclass; wndclass.style = CS_HREDRAW | CS_VREDRAW; wndclass.lpfnWndProc = WndProc; wndclass.cbClsExtra = 0; wndclass.cbWndExtra = 0; wndclass.hInstance = hInstance; wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION); wndclass.hCursor = LoadCursor(NULL, IDC_ARROW); wndclass.lpszMenuName = NULL; wndclass.lpszClassName = szAppname; if (!RegisterClass(&wndclass)) { MessageBox(NULL, TEXT("THIS PROGRAMME NEED WIN NT."), szAppname, MB_ICONERROR); return 0; } hwnd = CreateWindow(szAppname, TEXT("HELLO WORLD"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL); ShowWindow(hwnd, nCmdShow); UpdateWindow(hwnd); while (GetMessage(&msg, NULL, 0, 0)) { TranslateMessage(&msg); DispatchMessage(&msg); } return msg.wParam; return 0; }LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { HDC hdc; PAINTSTRUCT ps; RECT rect; switch (message) { case WM_CREATE: PlaySound(TEXT("hellowin.wav"), NULL, SND_FILENAME | SND_ASYNC); return 0; case WM_PAINT: hdc = BeginPaint(hwnd, &ps); GetClientRect(hwnd, &rect); DrawText(hdc, TEXT("HELLO WINDOWS"), -1, &rect, DT_SINGLELINE | DT_CENTER | DT_VCENTER); EndPaint(hwnd, &ps); return 0; case WM_DESTROY: PostQuitMessage(0); return 0; } return DefWindowProc(hwnd, message, wParam, lParam); }

求大神给我（P）支一招，人族一招很不好打人族不出别的，专门出隐身单位，然后扫雷达，打我的OB ，再用隐身单位打我，本人白银，求P大神解答。

【英乐Love】这个贴吧没有迈克尔杰克逊的，我要放几首。流行天王镇楼

为什么EVE 更新进度卡到了15%。

教育学，选修课挂了，说我取消资格，这是什么意思？取消资格是什么意思，算挂科吗？

跪求嵩山少林寺出一只球队，代表中国出战让他们知道，什么是真正的少林足球，星爷当教练！！

如何解锁科技我已经把0改成38000了为什么没有用呢

这个问题怎么解决，大神求教我已经重新安装过了，请说的详细一点

想在游戏中加好友的进本人 SMITE ID : SunnyChen 请在楼下留下你的游戏ID

smite 会自动改变密码吗？ Your password for this website, the forums, and the games have been updated. Your new password has been emailed to you. Once you receive the email, please return to the Account page and change it. 这话是告诉我他已经把我的密码给改了然后发给我邮箱对吗？

为什么我用不了哪吒今天刚买的哪吒，用了三次都无缘无故的跳出游戏。不是退出程序是退出游戏回到了排队那里。然后被禁30分钟为什么会这样，别的英雄就不会。

smite如何充值游戏币怎么充值？

升级半天怎么进度条没变

新手任务代理人上来让我找到代理人任务列表里的基本知识，但是找不到啊，我是新手，求老手指教，截图，谢谢

我个人比较喜欢DOTA 对于LOL也没有意见，但玩LOL总感觉不够激情… 你们觉得呢？

本人开了一家服装网店有兴趣的看看啊我也是东华理工的，今年大一，本店男装女装都有，有兴趣的来看一看，凡是东华理工的学生，只要报上学号，一律九折。联系电话 18720986538 QQ 603334965

求组队一起回家，本人男性，我家是内蒙古通辽的，有同乡的联系我，18720986538，Q603334965

东华理工大学有没有玩星际争霸2 有没有星际争霸2的、有的交流一下，我刚刚青铜组神族。想玩的联系一下 603334965

今天大一有人开宿舍门检查怎么会有人打开宿舍检查的？这人是谁，干嘛的，师兄们解释一下

魔兽新种族中，娜迦族还可以，冰魔简直就是兽族翻版魔兽新种族中，娜迦族还可以，冰魔简直就是兽族翻版

大一带电脑学校说会查，但具体严不严啊，)师兄师姐，求救啊

我是内蒙陈卓我开了家网店 http://tieba.baidu.com/mo/q/checkurl?url=http%3A%2F%2Fstore.taobao.com%2Fshop%2Fview_shop.htm%3Fmytmenu%3Dmdianpu%26utkn%3Dg&urlrefer=cfbb0b322b70269223b08d0894744bc1,nzwwoy32ha4dqoby1341043890390&user_number_id=908788951&scm=1028.1.1.20001 这是地址，

天下陈卓是一家凡是叫陈卓，这辈子风调雨顺，事业美满，生活幸福，男孩每天愁着被女群追，女孩每天愁着被男帮捧天下叫陈卓的永远幸福，内蒙古陈卓 Q603334965