SQLite数据库实例五

最后是关于管理员用户的功能实现：更改密码，更改个人信息，查询自己所管理学院的所有老师信息，查询自己管理学院的所有学生信息

前面两个功能与学生的类似，然后还是需要注意的就是管理员用户个人信息表的建立，我的包含：管理员编号，id，年龄，性别，管理学院

这里就不给大家介绍这两个，大家可以看sqlite数据库实例三。

查询自己所管理学院的所有老师信息和学生信息，把他们都在屏幕底部通过添加滚动条显示，不适用新的Activity显示：

代码：

public class ManagerMainFrame extends Activity
{
	private Intent intent;
	private TextView check_all_student_manager_textview;

	protected void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState);
		setContentView(R.layout.manager_main_frame);
		check_all_student_manager_textview = (TextView) findViewById(R.id.check_all_student_manager_textview);
	}

	/**
	 * 處理各種按鈕事件
	 * 
	 * @param v
	 */
	public void check_message_manager(View v)
	{
		switch (v.getId())
		{
		// 轉換到改變密碼界面
		case R.id.change_password_manager:
			Intent intentFromManager = getIntent();
			String manager_name = intentFromManager
					.getStringExtra("manager_name");
			intent = new Intent(ManagerMainFrame.this,ManagerChangerPassword.class);
			intent.putExtra("manager_name",manager_name);
			startActivityForResult(intent,1);
			break;
		// 更改自己的信息，轉換到該界面
		case R.id.chekSelfMessage_manager:
			Intent intentFromManager2 = getIntent();
			String manager_name2 = intentFromManager2
					.getStringExtra("manager_name");
			intent = new Intent(ManagerMainFrame.this,ManagerMessageActivity.class);
			intent.putExtra("name",manager_name2);
			startActivity(intent);
			break;
		// 查看所有學生信息
		case R.id.check_all_student_manager:
			studentMessage();
			break;
		// 查看所有老師信息
		case R.id.check_all_teacher_manager:
			teacherMessage();
			break;
		}
	}

	/**
	 * 查看老師信息
	 */
	private void teacherMessage()
	{
		// check_all_student_manager_textview.setText("");
		Intent intentFromManager = getIntent();
		String manager_name = intentFromManager.getStringExtra("manager_name");
		sqliteDatabase db = sqliteDatabase.openorCreateDatabase(getFilesDir()
				+ "/database.db",null);
		Cursor cursor_step = db.rawQuery(
				"select control_step from allmanagermessage where Mno=?",new String[]
				{ manager_name });
		String step_message = null;
		if (cursor_step.movetoFirst())
			step_message = cursor_step.getString(cursor_step
					.getColumnIndex("control_step"));
		cursor_step.close();
		StringBuilder sb = new StringBuilder(step_message + "所有老师信息有\n");

		Cursor cursor = db
				.rawQuery(
						"select allteachermessage.Tno,"
								+ "allteachermessage.Tname,"
								+ "allteachermessage.Tage,"
								+ "allteachermessage.Tsex,"
								+ "allteachermessage.T_Class,"
								+ "allteachermessage.T_Class_name "
								+ "from allteachermessage,allmanagermessage "
								+ "where allmanagermessage.control_step=allteachermessage.stepIN AND "
								+ "allmanagermessage.control_step=?",new String[]
						{ step_message });
		int i = 0;
		while (cursor.movetoNext() && i < cursor.getCount() / 2)
		{
			String Tno = cursor.getString(cursor.getColumnIndex("Tno"));
			String Tname = cursor.getString(cursor.getColumnIndex("Tname"));
			String Tage = cursor.getString(cursor.getColumnIndex("Tage"));
			String Tsex = cursor.getString(cursor.getColumnIndex("Tsex"));
			String T_Class = cursor.getString(cursor.getColumnIndex("T_Class"));
			String T_Class_name = cursor.getString(cursor
					.getColumnIndex("T_Class_name"));
			sb.append("教师号").append(Tno + ",");
			sb.append("姓名：").append(Tname + ",");
			sb.append("年龄：").append(Tage + ",");
			sb.append("性别").append(Tsex + ",");
			sb.append("所教班级").append(T_Class + ",");
			sb.append("所教科目").append(T_Class_name + "\n");
			i++;
		}
		cursor.close();
		check_all_student_manager_textview.setText(sb.toString());
	}

	/**
	 * 查看自己管理學院的所有老師
	 */
	private void studentMessage()
	{
		Intent intentFromManager = getIntent();
		String manager_name = intentFromManager.getStringExtra("manager_name");

		// check_all_student_manager_textview.setText("");
		sqliteDatabase db = sqliteDatabase.openorCreateDatabase(getFilesDir()
				+ "/database.db",null);

		Cursor cursor_step = db.rawQuery(
				"select control_step from allmanagermessage where Mno=?",new String[]
				{ manager_name });
		String step_message = null;
		if (cursor_step.movetoFirst())
			step_message = cursor_step.getString(cursor_step
					.getColumnIndex("control_step"));

		StringBuilder sb = new StringBuilder(step_message + "所有学生的部分信息有\n");
		Cursor cursor = db
				.rawQuery(
						"select allstudentmessage.Sno,"
								+ "allstudentmessage.name,"
								+ "allstudentmessage.classIn,"
								+ "allstudentmessage.sex "
								+ "from allstudentmessage,allmanagermessage "
								+ "where allstudentmessage.stepIN=allmanagermessage.control_step AND "
								+ "allmanagermessage.control_step=?",new String[]
						{ step_message });
		// Log.i("ManagerMainFrame",cursor.getCount()+"");
		int i = 0;
		while (cursor.movetoNext() && i < cursor.getCount() / 2)
		{
			String sno = cursor.getString(cursor.getColumnIndex("Sno"));
			String name = cursor.getString(cursor.getColumnIndex("name"));
			String classIn = cursor.getString(cursor.getColumnIndex("classIn"));
			String sex = cursor.getString(cursor.getColumnIndex("sex"));
			sb.append("学号：").append(sno + " ，");
			sb.append("姓名：").append(name + "，");
			sb.append("班级：").append(classIn + "，");
			sb.append("性别：").append(sex + "\n");
			i++;
			// Log.i("ManagerMainFrame",sno+name+classIn+sex);
		}
		check_all_student_manager_textview.setText(sb.toString());
	}

	/**
	 * 用于使用還回來Activity的數據
	 */
	@Override
	protected void onActivityResult(int requestCode,int resultCode,Intent data)
	{
		if (1 == requestCode)
			if (2 == resultCode)
			{
				String manager_name = data.getStringExtra("manager_name");
				intent.putExtra("manager_name",manager_name);
			}
	}

	private AlertDialog builder = null;
	/**
	 * 用于設置退出提示
	 */
	public boolean onKeyUp(int keyCode,KeyEvent event)
	{

		if (keyCode == KeyEvent.KEYCODE_BACK)
		{
			builder = new AlertDialog.Builder(ManagerMainFrame.this)
					.setTitle("温馨提示：")
					.setMessage("退出本程序？")
					.setPositiveButton("确定",new DialogInterface.OnClickListener()
							{
								public void onClick(DialogInterface dialog,int whichButton)
								{
									ManagerMainFrame.this.finish();
								}
							})
					.setNegativeButton("取消",int whichButton)
								{
									builder.dismiss();
								}
							}).show();
		}
		return true;
	}
}

主布局文件：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <TextView
            android:layout_width="200dp"
            android:layout_height="wrap_content"
            android:text="@string/change_password"
            android:textColor="#000000"
            android:textSize="18sp" />

        <Button
            android:id="@+id/change_password_manager"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="check_message_manager"
            android:text="@string/check_self_message" />
    </LinearLayout>
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >
        <TextView
            android:layout_width="200dp"
            android:layout_height="wrap_content"
            android:text="@string/check_self_message_01"
            android:textColor="#000000"
            android:textSize="18sp" />

        <Button
            android:id="@+id/chekSelfMessage_manager"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="check_message_manager"
            android:text="@string/check_self_message" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <TextView
            android:layout_width="200dp"
            android:layout_height="wrap_content"
            android:text="@string/check_all_student_manager"
            android:textColor="#000000"
            android:textSize="18sp" />

        <Button
            android:id="@+id/check_all_student_manager"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="check_message_manager"
            android:text="@string/check_self_message" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <TextView
            android:layout_width="200dp"
            android:layout_height="wrap_content"
            android:text="@string/check_all_teacher_manager"
            android:textColor="#000000"
            android:textSize="18sp" />

        <Button
            android:id="@+id/check_all_teacher_manager"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="check_message_manager"
            android:text="@string/check_self_message" />
    </LinearLayout><pre name="code" class="java"><--!加入有多个数据需要显示，使用滚动条可以实现-->

<ScrollView android:layout_width="wrap_content" android:layout_height="wrap_content" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/check_all_student_manager_textview" android:textSize="16sp" /></ScrollView></LinearLayout>

至此，所有的功能以及全部实现，需要源码可以留言，也可以去 广工数据库课设下载