Android私密记事本

package com.konlin.notebook; import com.konlin.biz.BookBiz; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.database.Cursor; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView; import android.widget.ListView; import android.widget.SimpleCursorAdapter; import android.widget.Toast; public class Main extends Activity { private ListView listview; private Cursor c2; public boolean onCreateOptionsMenu(Menu menu) { menu.add(0, 1, 1, "添加").setIcon(R.drawable.a); menu.add(0, 2, 2, "关于").setIcon(R.drawable.about); menu.add(0, 3, 3, "退出").setIcon(R.drawable.quite); menu.add(0, 4, 4, "帮助").setIcon(R.drawable.question); menu.add(0, 5, 5, "修改密码").setIcon(R.drawable.password); return true; } public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case 1: Intent intent=new Intent(Main.this,Add.class); startActivity(intent); return true; case 2: AlertDialog.Builder builder = new AlertDialog.Builder(Main.this); builder.setMessage("作者：康梁　　　　　　ＱＱ：５２９６６７０６７").setTitle("作者信息") .setCancelable(false) .setPositiveButton("确定", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); AlertDialog alert = builder.create(); alert.show(); return true; case 3: AlertDialog.Builder builder3 = new AlertDialog.Builder(Main.this); builder3.setMessage("确定要退出吗？") .setCancelable(false) .setPositiveButton("确定", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { System.exit(0); } }).setNegativeButton("取消", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); AlertDialog alert3 = builder3.create(); alert3.show(); return true; case 4: AlertDialog.Builder builder2 = new AlertDialog.Builder(Main.this); builder2.setMessage("请根据日记列表进行操作. 如果没有日记请先添加！" ).setTitle("帮助") .setCancelable(false) .setPositiveButton("确定", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); AlertDialog alert2 = builder2.create(); alert2.show(); return true; case 5: Intent intent2=new Intent(Main.this,Updatepassword.class); startActivity(intent2); return true; } return false; } public void onCreate(final Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); listview=(ListView)findViewById(R.id.listview); BookBiz bookbiz=new BookBiz(Main.this); final Cursor c=bookbiz.findall(); show(c); if(c.getCount()==0){ Toast.makeText(Main.this, "您还没有日记，请按menu键进行添加！", Toast.LENGTH_LONG).show(); } listview.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { c2=(Cursor)arg0.getItemAtPosition(arg2); final CharSequence[] items = {"查看", "新建", "删除"}; AlertDialog.Builder builder = new AlertDialog.Builder(Main.this); builder.setTitle("请选择"); builder.setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() { public void onClick(final DialogInterface dialog1, int item) { if(items[item].equals("查看")){ int id3= c2.getInt(0); Bundle bundle=new Bundle(); bundle.putInt("id", id3); Intent intent=new Intent(Main.this,Looking.class); intent.putExtras(bundle); startActivity(intent); dialog1.cancel(); }else if(items[item].equals("新建")){ Intent intent=new Intent(Main.this,Add.class); startActivity(intent); dialog1.cancel(); }else if(items[item].equals("删除")){ AlertDialog.Builder builder3 = new AlertDialog.Builder(Main.this); builder3.setMessage("确定要删除吗？") .setCancelable(false) .setPositiveButton("确定", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog2, int id) { int id3= c2.getInt(0); //Toast.makeText(getApplicationContext(), id3, Toast.LENGTH_SHORT).show(); BookBiz book=new BookBiz(Main.this); book.delete(id3); Main.this.onCreate(savedInstanceState); dialog1.cancel(); } }).setNegativeButton("取消", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); AlertDialog alert3 = builder3.create(); alert3.show(); } //Toast.makeText(getApplicationContext(), items[item], Toast.LENGTH_SHORT).show(); } }).setNegativeButton("取消", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); AlertDialog alert = builder.create(); alert.show(); } }); } private void show(Cursor c){ SimpleCursorAdapter adapter=new SimpleCursorAdapter(Main.this, R.layout.listitem, c, new String[]{"title","date"}, new int[]{R.id.xianshititle,R.id.shijian}); listview.setAdapter(adapter); } }