Task3_2_ContentProvider.rar_android

package edu.lytu.Task3_2_ContentProvider; import android.app.Activity; import android.content.ContentUris; import android.content.ContentValues; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView; import android.widget.EditText; import android.widget.ListView; import android.widget.SimpleCursorAdapter; import android.widget.AdapterView.OnItemClickListener; public class Task3_2_ContentProvider extends Activity { /** Called when the activity is first created. */ private final int MENU_INSERT=Menu.FIRST; private final int MENU_MODIFY=Menu.FIRST+1; private final int MENU_DELETE=Menu.FIRST+2; private SimpleCursorAdapter cursorAdapter; private NoteDBAdapter mDbAdapter; private NoteProvider noteProvider; private ListView listItem; private EditText CurText; private long curItemID; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); noteProvider=new NoteProvider(); listItem=(ListView)findViewById(R.id.lvItems); populateList(); listItem.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { // TODO Auto-generated method stub curItemID=arg3; Log.d("curItemID","curItemID:"+curItemID); ClickItem(curItemID); } }); } private void ClickItem(long id) { // TODO Auto-generated method stub // String strCurText=this.mDbAdapter.GetaNotes(id); CurText=(EditText)findViewById(R.id.etCurItem); Uri cururi = ContentUris.withAppendedId(NoteProvider.CONTENT_URI, id); // Uri.parse("content://edu.lytu.Task3_2_ContentProvider.privide/provide"+String.valueOf(id)); Cursor cursor = getContentResolver().query(cururi, null, null, null, null); cursor.moveToNext(); if (cursor.getCount()>0) { String strCurText=cursor.getString(cursor.getColumnIndex("item")); CurText.setText(strCurText); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // TODO Auto-generated method stub //Log.d("################", "1111111sertNote########"); MenuItem menuInsert=menu.add(Menu.NONE, MENU_INSERT, Menu.NONE, "新增"); menuInsert.setIcon(android.R.drawable.ic_menu_add); MenuItem menuModify=menu.add(Menu.NONE, MENU_MODIFY, Menu.NONE, "修改"); menuModify.setIcon(android.R.drawable.ic_menu_edit); MenuItem menuDelete=menu.add(Menu.NONE, MENU_DELETE, Menu.NONE, "删除"); menuDelete.setIcon(android.R.drawable.ic_menu_delete); //Log.d("################", "22222Note########"); this.mDbAdapter=new NoteDBAdapter(this); // mDbAdapter.open(); Log.d("################", "3333333332Note########"); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // TODO Auto-generated method stub Log.d("################", "44444Note########"); switch (item.getItemId()) { case MENU_INSERT: insertItem(); populateList(); break; case MENU_MODIFY: modifyItem(curItemID); populateList(); break; case MENU_DELETE: deleteItem(curItemID); populateList(); break; default: break; } return true; } private void modifyItem(long id) { // TODO Auto-generated method stub CurText=(EditText)findViewById(R.id.etCurItem); String strText=CurText.getText().toString(); // mDbAdapter.UpdateNote(strText, curItemID); Uri uri=ContentUris.withAppendedId(NoteProvider.CONTENT_URI, id); ContentValues values=new ContentValues(); values.put(NoteProvider.KEY_ITEM, strText); getContentResolver().update(uri, values, null, null); ClickItem(id); } private void deleteItem(long id) { // TODO Auto-generated method stub // mDbAdapter.deleteNote(curItemID); Uri uri=ContentUris.withAppendedId(NoteProvider.CONTENT_URI, id); getContentResolver().delete(uri, null, null); } private void insertItem() { // TODO Auto-generated method stub CurText=(EditText)findViewById(R.id.etCurItem); String strText=CurText.getText().toString(); ContentValues value = new ContentValues(); value.put(NoteProvider.KEY_ITEM, strText); getContentResolver().insert(NoteProvider.CONTENT_URI, value); // curItemID=mDbAdapter.InsertNote(strText); } private void populateList() { // TODO Auto-generated method stub //Log.d("################", "44444Note########"); Cursor cursor = getContentResolver().query(NoteProvider.CONTENT_URI, null, null, null, null); Log.d("################", "5555Note########"); // 把cursor的管理交给Activity去管 startManagingCursor(cursor); Log.d("################", "6666Note########"+cursor.getCount()); cursorAdapter = new SimpleCursorAdapter(Task3_2_ContentProvider.this, R.layout.listitem, cursor, new String[] { NoteProvider.KEY_ITEM}, new int[] { R.id.lvIte }); Log.d("################", "7777774Note########"+cursorAdapter.getCount()); // 把ListView和SimpleCursorAdapter关联起来 listItem.setAdapter(cursorAdapter); CurText=(EditText)findViewById(R.id.etCurItem); // String strCurText=this.mDbAdapter.GetaNotes(0); Uri cururi = Uri.parse("content://edu.lytu.Task3_2_ContentProvider.privide/provide"); cursor = getContentResolver().query(cururi, null, null, null, null); cursor.moveToNext(); Log.d("################", "8888888888Note########"+cursorAdapter.getCount()); Log.d("################", "8888888888NoteProvider.KEY_ITEM########"+NoteProvider.KEY_ITEM); if (cursor.getCount()>0) { String strCurText=cursor.getString(cursor.getColumnIndex(NoteProvider.KEY_ITEM)); CurText.setText(strCurText); } } }