小程序 日记系统源码（数据库的基本操作）.rar

package xiedong.systemdairy; import android.app.Activity; import android.app.AlertDialog; import android.app.AlertDialog.Builder; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.os.Bundle; import android.view.KeyEvent; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; public class SystemDairyActivity extends Activity { private EditText field_name = null; private EditText filed_pass = null; /**使用SharedPreferences 来储存与读取数据**/ SharedPreferences mShared = null; /**程序中可以同时存在多个SharedPreferences数据， 根据SharedPreferences的名称就可以拿到对象**/ public final static String SHARED_MAIN = "main"; /**SharedPreferences中储存数据的Key名称**/ public final static String KEY_REGISTERNAME = "registername"; public final static String KEY_REGISTERPASSWORD = "registerpassword"; /**SharedPreferences中储存数据的路径**/ public final static String DATA_URL = "/data/data/"; public final static String SHARED_MAIN_XML = "main.xml"; /* * public static final String xiedong_password = "xiedong_password"; * * public static final String PASSWORD = "PASSWORD"; private static final * String NAME = "NAME"; */ /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); setTitle("谢栋日记系统"); field_name = (EditText) findViewById(R.id.etUid); filed_pass = (EditText) findViewById(R.id.etPwd); Button button; Button xiedongregister; /* * SharedPreferences settings = getSharedPreferences(xiedong_password, * 0); settings.edit() .putString(NAME, "xiedong") .putString(PASSWORD, * "198701") .commit(); */ // String name = settings.getString(NAME, "xiedong"); // String password = settings.getString(PASSWORD, "198701"); // Set value // field_name.setText(name); // filed_pass.setText(password); button = (Button) findViewById(R.id.xiedong); xiedongregister=(Button)findViewById(R.id.xiemo); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub // SharedPreferences settings = // getSharedPreferences(xiedong_password, 0); mShared = getSharedPreferences(SHARED_MAIN, Context.MODE_PRIVATE); String registername1 = mShared.getString(KEY_REGISTERNAME, ""); String registerpassword1= mShared.getString(KEY_REGISTERPASSWORD, ""); // String xiedong_name=settings.getString(NAME, ""); String count = field_name.getText().toString(); String pass = filed_pass.getText().toString(); if ("".equals(count) || "".equals(pass)) { Toast.makeText(SystemDairyActivity.this, "^_^账户密码不能为空 请你注册^_^", 5).show(); } else if(registername1.equals(count)&&registerpassword1.equals(pass)){ Toast.makeText(SystemDairyActivity.this, "^_^账户信息验证成功！加载数据中... ...^_^", 10).show(); new Thread() {public void run() {try {sleep(2000); //等待三秒,自动进入软件主窗口 Intent intent = new Intent(); intent.setClass(SystemDairyActivity.this, newMenu.class); startActivity(intent); } catch (Exception e) { e.printStackTrace(); } //progressDialog.dismiss(); } }.start(); // Intent intent; // intent = new Intent(SystemDairyActivity.this, newMenu.class); // startActivity(intent); // Toast.makeText(SystemDairyActivity.this, // "^_^加载数据成功^_^",1).show(); }else{ Toast.makeText(SystemDairyActivity.this, "^_^密码错误 请查看帮助^_^", 5).show(); } } }); xiedongregister.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Intent intent=new Intent(); intent.setClass(SystemDairyActivity.this, Register.class); startActivity(intent); } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { // TODO Auto-generated method stub menu.add(0, 1, 0, "帮助"); menu.add(0, 2, 0, "关于"); return super.onCreateOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { // TODO Auto-generated method stub Intent intent; switch (item.getItemId()) { case 1 : // intent = new Intent(this, help.class); startActivity(intent); break; case 2 : intent = new Intent(this, about.class); startActivity(intent); break; } return super.onOptionsItemSelected(item); } protected void dialog() { AlertDialog.Builder builder = new Builder(SystemDairyActivity.this); builder.setMessage("确定要退出吗?"); builder.setTitle("提示"); builder.setPositiveButton("确认", new android.content.DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { android.os.Process.killProcess(android.os.Process.myPid()); dialog.dismiss(); System.exit(0); // SystemDairyActivity.this.finish(); } }); builder.setNegativeButton("取消", new android.content.DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }); builder.create().show(); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) { dialog(); return false; } return false; } }