android 备忘录源码（超精细）

package com.amaker.ch17.app; import java.util.Calendar; import android.app.AlarmManager; import android.app.AlertDialog; import android.app.DatePickerDialog; import android.app.Dialog; import android.app.ListActivity; import android.app.PendingIntent; import android.app.TimePickerDialog; import android.content.ContentUris; import android.content.ContentValues; import android.content.DialogInterface; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.BaseAdapter; import android.widget.CheckedTextView; import android.widget.DatePicker; import android.widget.EditText; import android.widget.ListView; import android.widget.TextView; import android.widget.TimePicker; import android.widget.AdapterView.OnItemClickListener; import com.amaker.ch17.app.TaskList.Tasks; /** * * @author 郭宏志 * 备忘录详细信息类，该信息 */ public class TaskDetailActivity extends ListActivity { // 备忘录信息列表 private ListView listView = null; // 提醒日期 private int mYear; private int mMonth; private int mDay; // 提醒时间 private int mHour; private int mMinute; // 日期显示TextView private TextView dateName, dateDesc; // 时间显示TextView private TextView timeName, timeDesc; // 提醒内容TextView private TextView contentName, contentDesc; // 是否开启提醒 private int on_off = 0; // 是否声音警告 private int alarm = 0; // 显示日期、时间对话框常量 static final int DATE_DIALOG_ID = 0; static final int TIME_DIALOG_ID = 1; // 保存内容、日期、时间字符串 private String content, date1, time1; // 备忘录ID private int id1; // 多选框 private CheckedTextView ctv1, ctv2; // 访问布局实例 private LayoutInflater li; // 初始化方法 private void init(Intent intent) { Bundle b = intent.getBundleExtra("b"); if (b != null) { id1 = b.getInt("id"); content = b.getString("content"); date1 = b.getString("date1"); time1 = b.getString("time1"); on_off = b.getInt("on_off"); alarm = b.getInt("alarm"); if (date1 != null && date1.length() > 0) { String[] strs = date1.split("/"); mYear = Integer.parseInt(strs[0]); mMonth = Integer.parseInt(strs[1]); mDay = Integer.parseInt(strs[2]); } if (time1 != null && time1.length() > 0) { String[] strs = time1.split(":"); mHour = Integer.parseInt(strs[0]); mMinute = Integer.parseInt(strs[1]); } } } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // 获得ListView listView = getListView(); // 实例化LayoutInflater li = getLayoutInflater(); // 设置ListView Adapter listView.setAdapter(new ViewAdapter()); // 可多选 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); // 获得Calendar实例 final Calendar c = Calendar.getInstance(); // 获得当前日期、时间 mYear = c.get(Calendar.YEAR); mMonth = c.get(Calendar.MONTH); mDay = c.get(Calendar.DAY_OF_MONTH); mHour = c.get(Calendar.HOUR_OF_DAY); mMinute = c.get(Calendar.MINUTE); // 响应列表单击事件 listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> av, View v, int position, long id) { switch (position) { // 设置是否开启提醒 case 0: ctv1 = (CheckedTextView) v; if (ctv1.isChecked()) { on_off = 0; } else { on_off = 1; } break; // 设置提醒日期 case 1: showDialog(DATE_DIALOG_ID); break; // 设置提醒时间 case 2: showDialog(TIME_DIALOG_ID); break; // 设置提醒内容 case 3: showDialog1("请输入内容："); break; // 设置是否开启语音提醒 case 4: ctv2 = (CheckedTextView) v; if (ctv2.isChecked()) { alarm = 0; setAlarm(false); } else { alarm = 1; setAlarm(true); } break; default: break; } } }); } @Override protected void onResume() { super.onResume(); // 初始化列表 init(getIntent()); } // ListView Adatper，该类实现了列表的每一项通过自定义视图实现 class ViewAdapter extends BaseAdapter { // 列表显示内容 String[] strs = { "是否开启", "日期", "时间", "内容", "开启闹钟" }; // 获得列表列数 @Override public int getCount() { return strs.length; } // 返回列表项 @Override public Object getItem(int position) { return position; } // 返回列表ID @Override public long getItemId(int position) { return position; } // 获得当前列表项视图 @Override public View getView(int position, View convertView, ViewGroup parent) { View v = li.inflate(R.layout.item_row, null); switch (position) { // 是否开启该条备忘录 case 0: ctv1 = (CheckedTextView) li .inflate( android.R.layout.simple_list_item_multiple_choice, null); ctv1.setText(strs[position]); if (on_off == 0) { ctv1.setChecked(false); } else { ctv1.setChecked(true); } return ctv1; // 提醒日期 case 1: dateName = (TextView) v.findViewById(R.id.name); dateDesc = (TextView) v.findViewById(R.id.desc); dateName.setText(strs[position]); dateDesc.setText(mYear + "/" + mMonth + "/" + mDay); return v; // 提醒时间 case 2: timeName = (TextView) v.findViewById(R.id.name); timeDesc = (TextView) v.findViewById(R.id.desc); timeName.setText(strs[position]); timeDesc.setText(mHour + ":" + mMinute); return v; // 提醒内容 case 3: contentName = (TextView) v.findViewById(R.id.name); contentDesc = (TextView) v.findViewById(R.id.desc); contentName.setText(strs[position]); contentDesc.setText(content); return v; // 是否声音提示 case 4: ctv2 = (CheckedTextView) li .inflate( android.R.layout.simple_list_item_multiple_choice, null); ctv2.setText(strs[position]); if (alarm == 0) { ctv2.setChecked(false); } else { ctv2.setChecked(true); } return ctv2; default: break; } return null; } } // 显示对话框 @Override protected Dialog onCreateDialog(int id) { switch (id) { // 显示日期对话框 case DATE_DIALOG_ID: return new DatePickerDialog(this, mDateSetListener, mYear, mMonth, mDay); // 显示时间对话框 case TIME_DIALOG_ID: return new TimePickerDialog(this, mTimeSetListener, mHour, mMinute, false); } return null; } // 设置通知提示 private void setAlarm(boolean flag) { final String BC_ACTION = "com.amaker.ch17.TaskReceiver"; // 获得AlarmManager实例 final AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE); // 实例化Intent Intent intent = new Intent(); // 设置Intent action属性 intent.setAction(BC_ACTION); intent.putExtra("msg", content); // 实例化PendingIntent final PendingIntent pi = PendingIntent.getBroadcast( getApplicationContext(), 0, intent, 0); // 获得系统时间 final long time1 = System.currentTimeMillis(); Calendar c = Calendar.getInstance(); c.set(mYear, mMonth, mDay, mHour, mMinute); long time2 = c.getTimeInMillis(); if (flag&&(time2-time1)>0&&on_off==1){ am.set(AlarmManager.RTC_WAKEUP, time2, pi); }else{ am.cancel(pi); } } /* * 设置提示日期对话框 */ private void showDialog1(String msg) { View v = li.inflate(R.layout.item_content, null); final EditText contentET = (EditText) v.findViewById(R.id.content); contentET.setText(content); new AlertDialog.Builder(this).setView(v).setMessage(msg).setCancelable( false).setPositiveButton("确定", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { content = contentET.getText().toString(); contentDesc.setText(content); } }).show(); } // 时间选择对话框 private TimePickerDialog.OnTimeSetListener mTimeSetListener = new TimePickerDialog.OnTimeSetListener() { public void onTimeSet(TimePicker view, int hourOfDay, int minute) { mHour = hour