1、我的日記設(shè)計(jì)文檔項(xiàng)目名稱：mydiary2程序目錄：一、最終效果圖2、 實(shí)現(xiàn)功能1. 實(shí)現(xiàn)保存密碼的功能具體代碼：sp=getSharedPreferences(userinfo,Context.MODE_PRIVATE);name.setText(sp.getString(USERNAME, );if(sp.getBoolean(REMBERPWD, false)pwd.setText(sp.getString(PASSWORD, );elsepwd.setText();rm_pass.setChecked(sp.getBoolean(REMBERPWD, false);if(rm_pass

2、.isChecked()editor.putString(USERNAME, username);editor.putString(PASSWORD, password);editor.putBoolean(REMBERPWD, true);mit();elseeditor.putBoolean(REMBERPWD,false);mit();2. 顯示登錄進(jìn)度具體代碼： void initHandler() handler=new Handler() Overridepublic void handleMessage(Message msg)switch

3、 (msg.what) case CONTINUE:if(!Thread.currentThread().isInterrupted()progressBar.setProgress(progress);break;case STOP:Intent intent=new Intent();intent.setClass(getApplicationContext(), twoActivity.class);startActivity(intent);finish();break;default:break;super.handleMessage(msg);progress=0;progress

4、Bar.setProgress(progress);progressBar.setMax(MAX);progressBar.setVisibility(View.VISIBLE);new Thread(new Runnable() Overridepublic void run() / tryfor(int i=0;i5;i+)progress=(i+1)*20;Thread.sleep(1000);if(i=4)Message msg=new Message();msg.what=STOP;handler.sendMessage(msg);break;elseMessage msg=new

5、Message();msg.what=CONTINUE;handler.sendMessage(msg);catch(InterruptedException e)e.printStackTrace();).start();3. 保存日記到數(shù)據(jù)庫(kù)具體代碼：private SQLiteOpenHelper helper;private SQLiteDatabase DB;private static final String DATABASETable=dia;private void initsql() helper=new mysqlitehelper(twoActivity.this);/

6、實(shí)例化 DB=helper.getWritableDatabase();ContentValues va=new ContentValues();va.put(wz, context);DB.insert(DATABASETable, null, va);/String sql=INSERT INTO +DATABASETable+(wz)VALUES(content);/DB.execSQL(sql);Toast.makeText(twoActivity.this, 保存成功！, Toast.LENGTH_SHORT).show();DB.close();4. 退出菜單顯示具體代碼：/退出菜

7、單Overridepublic boolean onCreateOptionsMenu(Menu menu) getMenuInflater().inflate(R.menu.main, menu);return true;Overridepublic boolean onOptionsItemSelected(MenuItem item) / switch (item.getItemId() case R.id.nihao:Toast.makeText(getApplicationContext(), mydiary 1.0, Toast.LENGTH_SHORT).show();break

8、;case R.id.out:creatDialog();break;default:break;return super.onOptionsItemSelected(item);5. 點(diǎn)擊退出，彈出對(duì)話框具體代碼：private void creatDialog() / AlertDialog.Builder builder=new AlertDialog.Builder(MainActivity.this);builder.setMessage(確定退出嗎？);builder.setTitle(提示);builder.setIcon(android.R.drawable.ic_dialog

9、_alert);builder.setPositiveButton(確認(rèn), new DialogInterface.OnClickListener() Overridepublic void onClick(DialogInterface dialog, int which) / finish(););builder.setNegativeButton(取消, new DialogInterface.OnClickListener() Overridepublic void onClick(DialogInterface dialog, int which) / TODO Auto-gener

10、ated method stub);builder.create().show();3、 代碼設(shè)計(jì)文件名稱：mainactivity.javapackage com.example.mydiary;import android.app.Activity;import android.app.ActionBar;import android.app.AlertDialog;import android.app.AlertDialog.Builder;import android.app.Fragment;import android.content.Context;import android.

11、content.DialogInterface;import android.content.Intent;import android.content.SharedPreferences;import android.content.SharedPreferences.Editor;import android.graphics.LightingColorFilter;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.LayoutInflater;i

12、mport android.view.Menu;import android.view.MenuItem;import android.view.SubMenu;import android.view.View;import android.view.ViewGroup;import android.widget.Button;import android.widget.CheckBox;import android.widget.EditText;import android.widget.ProgressBar;import android.widget.Toast;import andr

13、oid.os.Build;public class MainActivity extends Activity private EditText name,pwd;private CheckBox rm_pass;private Button btn;private SharedPreferences sp;private ProgressBar progressBar;private Handler handler;private static final int STOP=0x111;private static final int CONTINUE=0x112;private stati

14、c final int MAX=100;private int progress;Overrideprotected void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);setfindview();sp();setListener();initHandler(); void initHandler() handler=new Handler() Overridepublic void handleMessage(Mes

15、sage msg)switch (msg.what) case CONTINUE:if(!Thread.currentThread().isInterrupted()progressBar.setProgress(progress);break;case STOP:Intent intent=new Intent();intent.setClass(getApplicationContext(), twoActivity.class);startActivity(intent);finish();break;default:break;super.handleMessage(msg);priv

16、ate void sp() sp=getSharedPreferences(userinfo,Context.MODE_PRIVATE);name.setText(sp.getString(USERNAME, );if(sp.getBoolean(REMBERPWD, false)pwd.setText(sp.getString(PASSWORD, );elsepwd.setText();rm_pass.setChecked(sp.getBoolean(REMBERPWD, false);progress=0;progressBar.setProgress(progress);progress

17、Bar.setMax(MAX);private void setListener() / btn.setOnClickListener(new View.OnClickListener() Overridepublic void onClick(View v) String username=String.valueOf(name.getText();String password=String.valueOf(pwd.getText();if(!username.equals(admin)|(!password.equals(admin)Toast.makeText(MainActivity

18、.this, 用戶名或者密碼錯(cuò)誤！, Toast.LENGTH_LONG).show();elseEditor editor=sp.edit();if(rm_pass.isChecked()editor.putString(USERNAME, username);editor.putString(PASSWORD, password);editor.putBoolean(REMBERPWD, true);mit();elseeditor.putBoolean(REMBERPWD,false);mit();name.setEnabled(false);pw

19、d.setEnabled(false);btn.setEnabled(false);progressBar.setVisibility(View.VISIBLE);new Thread(new Runnable() Overridepublic void run() / tryfor(int i=0;i5;i+)progress=(i+1)*20;Thread.sleep(1000);if(i=4)Message msg=new Message();msg.what=STOP;handler.sendMessage(msg);break;elseMessage msg=new Message(

20、);msg.what=CONTINUE;handler.sendMessage(msg);catch(InterruptedException e)e.printStackTrace();).start(););private void setfindview() / btn=(Button) findViewById(R.id.btn);name=(EditText) findViewById(R.id.et_name);pwd=(EditText) findViewById(R.id.et_pass);rm_pass=(CheckBox) findViewById(R.id.checkBo

21、x1);progressBar=(ProgressBar) findViewById(R.gressBar1);/對(duì)話框private void creatDialog() / AlertDialog.Builder builder=new AlertDialog.Builder(MainActivity.this);builder.setMessage(確定退出嗎？);builder.setTitle(提示);builder.setIcon(android.R.drawable.ic_dialog_alert);builder.setPositiveButton(確認(rèn), new

22、DialogInterface.OnClickListener() Overridepublic void onClick(DialogInterface dialog, int which) / finish(););builder.setNegativeButton(取消, new DialogInterface.OnClickListener() Overridepublic void onClick(DialogInterface dialog, int which) / TODO Auto-generated method stub);builder.create().show();

23、/退出菜單Overridepublic boolean onCreateOptionsMenu(Menu menu) getMenuInflater().inflate(R.menu.main, menu);return true;Overridepublic boolean onOptionsItemSelected(MenuItem item) / switch (item.getItemId() case R.id.nihao:Toast.makeText(getApplicationContext(), mydiary 1.0, Toast.LENGTH_SHORT).show();b

24、reak;case R.id.out:creatDialog();break;default:break;return super.onOptionsItemSelected(item);文件名稱：twoactivity.javapackage com.example.mydiary;import android.app.Activity;import android.app.ActionBar;import android.app.AlertDialog;import android.app.AlertDialog.Builder;import android.app.Fragment;im

25、port android.content.Context;import android.content.DialogInterface;import android.content.Intent;import android.content.SharedPreferences;import android.content.SharedPreferences.Editor;import android.graphics.LightingColorFilter;import android.os.Bundle;import android.os.Handler;import android.os.

26、Message;import android.view.LayoutInflater;import android.view.Menu;import android.view.MenuItem;import android.view.SubMenu;import android.view.View;import android.view.ViewGroup;import android.widget.Button;import android.widget.CheckBox;import android.widget.EditText;import android.widget.Progres

27、sBar;import android.widget.Toast;import android.os.Build;public class MainActivity extends Activity private EditText name,pwd;private CheckBox rm_pass;private Button btn;private SharedPreferences sp;private ProgressBar progressBar;private Handler handler;private static final int STOP=0x111;private s

28、tatic final int CONTINUE=0x112;private static final int MAX=100;private int progress;Overrideprotected void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);setfindview();sp();setListener();initHandler(); void initHandler() handler=new Han

29、dler() Overridepublic void handleMessage(Message msg)switch (msg.what) case CONTINUE:if(!Thread.currentThread().isInterrupted()progressBar.setProgress(progress);break;case STOP:Intent intent=new Intent();intent.setClass(getApplicationContext(), twoActivity.class);startActivity(intent);finish();break

30、;default:break;super.handleMessage(msg);private void sp() sp=getSharedPreferences(userinfo,Context.MODE_PRIVATE);name.setText(sp.getString(USERNAME, );if(sp.getBoolean(REMBERPWD, false)pwd.setText(sp.getString(PASSWORD, );elsepwd.setText();rm_pass.setChecked(sp.getBoolean(REMBERPWD, false);progress=

31、0;progressBar.setProgress(progress);progressBar.setMax(MAX);private void setListener() / btn.setOnClickListener(new View.OnClickListener() Overridepublic void onClick(View v) String username=String.valueOf(name.getText();String password=String.valueOf(pwd.getText();if(!username.equals(admin)|(!passw

32、ord.equals(admin)Toast.makeText(MainActivity.this, 用戶名或者密碼錯(cuò)誤！, Toast.LENGTH_LONG).show();elseEditor editor=sp.edit();if(rm_pass.isChecked()editor.putString(USERNAME, username);editor.putString(PASSWORD, password);editor.putBoolean(REMBERPWD, true);mit();elseeditor.putBoolean(REMBERPWD,fals

33、e);mit();name.setEnabled(false);pwd.setEnabled(false);btn.setEnabled(false);progressBar.setVisibility(View.VISIBLE);new Thread(new Runnable() Overridepublic void run() / tryfor(int i=0;i5;i+)progress=(i+1)*20;Thread.sleep(1000);if(i=4)Message msg=new Message();msg.what=STOP;handler.sendMes

34、sage(msg);break;elseMessage msg=new Message();msg.what=CONTINUE;handler.sendMessage(msg);catch(InterruptedException e)e.printStackTrace();).start(););private void setfindview() / btn=(Button) findViewById(R.id.btn);name=(EditText) findViewById(R.id.et_name);pwd=(EditText) findViewById(R.id.et_pass);

35、rm_pass=(CheckBox) findViewById(R.id.checkBox1);progressBar=(ProgressBar) findViewById(R.gressBar1);/對(duì)話框private void creatDialog() / AlertDialog.Builder builder=new AlertDialog.Builder(MainActivity.this);builder.setMessage(確定退出嗎？);builder.setTitle(提示);builder.setIcon(android.R.drawable.ic_dial

36、og_alert);builder.setPositiveButton(確認(rèn), new DialogInterface.OnClickListener() Overridepublic void onClick(DialogInterface dialog, int which) / finish(););builder.setNegativeButton(取消, new DialogInterface.OnClickListener() Overridepublic void onClick(DialogInterface dialog, int which) / TODO Auto-generated method stub);builder.create().show();/退出菜單Overridepublic boolea