实例介绍
【实例简介】
使用Eclipse新建project,选择其他，然后在Android文件夹里边选择已经存在的安卓项目，导入程序文件即可
里边包括源码以及使用说明和毕业论文
【实例截图】
【核心代码】
package com.example.workremind;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.util.Log;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.AdapterView.AdapterContextMenuInfo;
public class RemindMain extends Activity {
private ListView listview = null ;
private myDBhelper myhelper = null ;
private myDBhelper myhelper1=null;
private List<myremind> list = new ArrayList<myremind>() ;
private Button btnadd = null ;
private Button btnsearch=null;
private Spinner remindType=null;
private final int ADDREMIND = 1 ;
private final int UPDATEREMIND = 1 ;
private int currentPosition = -1 ;
private myadapter adapter=null;
private String mytype=null;
//private String mytype=null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE) ;
setContentView(R.layout.remind_main);
this.listview = (ListView)super.findViewById(R.id.Lsv_remind) ;
this.btnadd =(Button)super.findViewById(R.id.btn_new_add) ;
this.btnsearch=(Button)super.findViewById(R.id.SearchType);
this.remindType=(Spinner)super.findViewById(R.id.mytype);
//String temptype=null;
myhelper1=new myDBhelper(this);
this.btnsearch.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
//listview.removeAllViews();
mytype=remindType.getSelectedItem().toString();
int size=list.size();
if(size>0)
{
list.removeAll(list);
adapter.notifyDataSetChanged();
listview.setAdapter(adapter);
}
//listview.setAdapter(null);
registerForContextMenu(listview) ;
String sql = "select * from remind where Type='" mytype "'" ;
Cursor cursor = myhelper1.select(sql) ;
for(cursor.moveToFirst();!cursor.isAfterLast();cursor.moveToNext()){
myremind remind = new myremind() ;
remind.setTitle(cursor.getString(cursor.getColumnIndex("Title"))) ;
remind.setRemindDate(cursor.getString(cursor.getColumnIndex("RemindTime")));
remind.setRemindTime(cursor.getString(cursor.getColumnIndex("RemindTimeSecond")));
remind.setserviceflag(cursor.getString(cursor.getColumnIndex("ServiceFlag"))) ;
remind.setId(cursor.getInt(cursor.getColumnIndex("_id"))) ;
list.add(remind) ;
}
myadapter adapter = new myadapter(RemindMain.this, list) ;
listview.setAdapter(adapter);
}
});
this.listview.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
Intent it = new Intent(RemindMain.this, workRemind.class) ;
it.putExtra("updateflag", "1") ;//传递修改标志
myremind updateremind = new myremind() ;
updateremind = list.get(position) ;
it.putExtra("updateid", updateremind.getId()) ;//传递选中id
startActivityForResult(it, UPDATEREMIND);
}
});
this.btnadd.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent it = new Intent(RemindMain.this, workRemind.class) ;
it.putExtra("updateflag", "0");
startActivityForResult(it, ADDREMIND);
}
});
registerForContextMenu(listview) ;
String sql = "select * from remind " ;
myhelper = new myDBhelper(this) ;
Cursor cursor = myhelper.select(sql) ;
for(cursor.moveToFirst();!cursor.isAfterLast();cursor.moveToNext()){
myremind remind = new myremind() ;
remind.setTitle(cursor.getString(cursor.getColumnIndex("Title"))) ;
remind.setRemindDate(cursor.getString(cursor.getColumnIndex("RemindTime")));
remind.setRemindTime(cursor.getString(cursor.getColumnIndex("RemindTimeSecond")));
remind.setserviceflag(cursor.getString(cursor.getColumnIndex("ServiceFlag"))) ;
remind.setId(cursor.getInt(cursor.getColumnIndex("_id"))) ;
list.add(remind) ;
}
adapter = new myadapter(RemindMain.this, list) ;
listview.setAdapter(adapter);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
//super.onActivityResult(requestCode, resultCode, data);
if(resultCode==RESULT_OK){
refresh() ;
}
if(requestCode == UPDATEREMIND){
refresh() ;
}
}
private void refresh(){
String sql = "select * from remind" ;
myhelper = new myDBhelper(this) ;
Cursor cursor = myhelper.select(sql) ;
list.clear() ;
for(cursor.moveToFirst();!cursor.isAfterLast();cursor.moveToNext()){
myremind remind = new myremind() ;
remind.setTitle(cursor.getString(cursor.getColumnIndex("Title"))) ;
remind.setRemindDate(cursor.getString(cursor.getColumnIndex("RemindTime")));
remind.setRemindTime(cursor.getString(cursor.getColumnIndex("RemindTimeSecond")));
remind.setserviceflag(cursor.getString(cursor.getColumnIndex("ServiceFlag"))) ;
remind.setId(cursor.getInt(cursor.getColumnIndex("_id")));
list.add(remind) ;
}
myadapter adapter = new myadapter(RemindMain.this, list) ;
listview.setAdapter(adapter);
}
//响应上下文菜单
//上下文菜单
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
menu.add(0, 0, 0, "删除提醒");
menu.add(0, 1, 1, "编辑提醒");
}
@Override
public boolean onMenuItemSelected(int featureId, MenuItem item) {
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();// 存放当前点击listview项的信息
currentPosition = info.position ;
Log.i("*****","" currentPosition) ;
switch (item.getItemId()) {
case 0:
new AlertDialog.Builder(RemindMain.this)
.setTitle("警告")
.setMessage("您确定要删除该条工作提醒吗？")
.setPositiveButton("确定",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
myremind delemyremind = list.get(currentPosition);
String sql = "delete from remind where _id=" delemyremind.getId() ;
Log.i("*****sql*****",delemyremind.getId() "") ;
myhelper = new myDBhelper(RemindMain.this) ;
myhelper.delete(sql) ;
refresh() ;
}
}).setNegativeButton("取消", null).create().show();
break;
case 1:
Intent it = new Intent(RemindMain.this, workRemind.class) ;
it.putExtra("updateflag", "1") ;//传递修改标志
myremind updateremind = new myremind() ;
updateremind = list.get(currentPosition) ;
it.putExtra("updateid", updateremind.getId()) ;//传递选中id
startActivityForResult(it, UPDATEREMIND);
break ;
default:
break;
}
return true ;
}
//listview 适配器
private class myadapter extends BaseAdapter{
private Context context = null ;
private List<myremind> list = null ;
public myadapter(Context context,List<myremind> list){
this.context = context ;
this.list = list ;
}
@Override
public int getCount() {
return list.size();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewholder = null ;
if(convertView == null){
LayoutInflater inflater = LayoutInflater.from(context) ;
convertView = (View)inflater.inflate(R.layout.remind_list, null) ;
viewholder = new ViewHolder() ;
viewholder.title = (TextView)convertView.findViewById(R.id.textviewtitle) ;
viewholder.reminddate=(TextView)convertView.findViewById(R.id.remindTimetextview) ;
viewholder.remindTime=(TextView)convertView.findViewById(R.id.remindTimeSecondtextview) ;
viewholder.serviceflag = (TextView)convertView.findViewById(R.id.remindserviceflagtextview);
convertView.setTag(viewholder) ;
}else{
viewholder =(ViewHolder) convertView.getTag() ;
}
if(list.get(position).getTitle().toString().length()>8){
viewholder.title.setText(list.get(position).getTitle().toString().substring(0, 8) "..");
}else{
viewholder.title.setText(list.get(position).getTitle().toString()) ;
}
viewholder.reminddate.setText(list.get(position).getRemindDate().toString()) ;
viewholder.remindTime.setText(list.get(position).getRemindTime().toString()) ;
if(list.get(position).getserviceflag().toString().equals("1")){
viewholder.serviceflag.setText("启用") ;
}else {
viewholder.serviceflag.setText("禁用") ;
}
return convertView;
}
class ViewHolder{
TextView title ;
TextView reminddate ;
TextView remindTime ;
TextView serviceflag ;
}
}
}
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