simplecursoraapter/listview 到 sqlite 数据库

Question

嗨，我对数据库很陌生。 我有一个代码可以从手机中检索 SMS 收件箱、发送箱和草稿，并使用 SimpleCursor Adapter 在 ListView 中显示它。 我想将“Sent Box”的 ListView 项目（一次一个）保存和检索到 SQLite 数据库。 目前我可以使用 edittext 值将数据插入数据库。 所以基本上我想要的是一种方法，一次选择一个 ListView 项目并将其保存在 String[] 中，然后将 String[] 值插入到数据库中。 任何帮助，将不胜感激。 提前致谢。

 Code to display database items using "ListActivity" SQLiteDatabase db; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); try { db=openOrCreateDatabase("Student.db", SQLiteDatabase.CREATE_IF_NECESSARY, null); Cursor c=db.rawQuery("select id,name,age from Stud", null); ArrayList<String> list = new ArrayList<String>(); int count=c.getCount(); if(c.getCount()>0) { while(c.moveToNext()) { list.add(c.getString(0)+" , "+c.getString(1)+" , "+c.getString(2)); } c.close(); Toast.makeText(this,"Total Records: "+count, Toast.LENGTH_LONG).show(); ArrayAdapter<String> adapter=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, list); getListView().setAdapter(adapter); } else { Toast.makeText(this, "No Record Found" , Toast.LENGTH_LONG).show(); } } catch(Exception e) { Toast.makeText(this, ""+e, Toast.LENGTH_LONG).show(); } } public void onDestroy() { super.onDestroy(); db.close(); } }

 SQLite database public class MainActivity extends Activity { SQLiteDatabase db; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); createDB(); //do insert Button btnInsert=(Button)findViewById(R.id.btnInsert ); btnInsert.setOnClickListener(new OnClickListener() { public void onClick(View arg0) { insert(); } }); Button btnClear=(Button)findViewById(R.id.btnClear ); btnClear.setOnClickListener(new OnClickListener() { public void onClick(View arg0) { clear(); } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); CreateMenu(menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { return MenuChoice(item); } private void CreateMenu(Menu menu) { MenuItem mnu1 = menu.add(0, 0, 0, "Insert"); { mnu1.setAlphabeticShortcut('i'); mnu1.setIcon(android.R.drawable.ic_input_add); } MenuItem mnu2 = menu.add(0, 1, 1, "Search"); { mnu2.setAlphabeticShortcut('s'); mnu2.setIcon(android.R.drawable.ic_search_category_default); } MenuItem mnu3 = menu.add(0, 2, 2, "Delete"); { mnu3.setAlphabeticShortcut('d'); mnu3.setIcon(android.R.drawable.ic_delete); } MenuItem mnu4 = menu.add(0, 3, 3, "View"); { mnu4.setAlphabeticShortcut('d'); mnu4.setIcon(android.R.drawable.ic_menu_info_details); } } private boolean MenuChoice(MenuItem item) { Intent intent=new Intent(); switch (item.getItemId()) { case 0: insert(); return true; case 1: intent.setClass(MainActivity.this, Search.class); startActivity(intent); return true; case 2: intent.setClass(MainActivity.this, Search.class); startActivity(intent); return true; case 3: intent.setClass(MainActivity.this, ViewRecord.class); startActivity(intent); return true; } return false; } public void createDB() { db=openOrCreateDatabase("Student.db", SQLiteDatabase.CREATE_IF_NECESSARY, null); db.setLocale(Locale.getDefault()); db.setLockingEnabled(true); db.setVersion(1); String sql="create table if not exists Stud(id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, age INTEGER)"; db.execSQL(sql); } public void insert() { EditText txtName=(EditText)findViewById(R.id.txtName); EditText txtAge=(EditText)findViewById(R.id.txtAge); if(txtName.getText().toString().equals("")) { Toast.makeText(MainActivity.this, "Enter Name.", Toast.LENGTH_SHORT).show(); } else if (txtAge.getText().toString().equals("")) { Toast.makeText(MainActivity.this, "Enter Age.", Toast.LENGTH_SHORT).show(); } else { String sql="insert into Stud(name,age) values('"+ txtName.getText().toString() +"',"+txtAge.getText().toString()+")"; db.execSQL(sql); clear(); Toast.makeText(MainActivity.this, "Record Successfully Inserted.", Toast.LENGTH_SHORT).show(); } } public void clear() { EditText txtName=(EditText)findViewById(R.id.txtName); EditText txtAge=(EditText)findViewById(R.id.txtAge); txtName.setText(""); txtAge.setText(""); txtName.clearFocus(); txtAge.clearFocus(); txtName.requestFocus(); } @Override public void onDestroy() { super.onDestroy(); db.close(); } }

 Code for displaying SMS Inbox, Sent Box and Draft public class MessageBox extends Activity implements OnClickListener { // GUI Widget Button btnSent, btnInbox, btnDraft; TextView lblMsg, lblNo; ListView lvMsg; // Cursor Adapter SimpleCursorAdapter adapter; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.messagebox); // Init GUI Widget btnInbox = (Button) findViewById(R.id.btnInbox); btnInbox.setOnClickListener(this); btnSent = (Button) findViewById(R.id.btnSentBox); btnSent.setOnClickListener(this); btnDraft = (Button) findViewById(R.id.btnDraft); btnDraft.setOnClickListener(this); lvMsg = (ListView) findViewById(R.id.lvMsg); } @Override public void onClick(View v) { if (v == btnInbox) { // Create Inbox box URI Uri inboxURI = Uri.parse("content://sms/inbox"); // List required columns String[] reqCols = new String[] { "_id", "address", "body" }; // Get Content Resolver object, which will deal with Content // Provider ContentResolver cr = getContentResolver(); // Fetch Inbox SMS Message from Built-in Content Provider Cursor c = cr.query(inboxURI, reqCols, null, null, null); // Attached Cursor with adapter and display in listview adapter = new SimpleCursorAdapter(this, R.layout.row, c, new String[] { "body", "address" }, new int[] { R.id.lblMsg, R.id.lblNumber }); lvMsg.setAdapter(adapter); } if (v == btnSent) { // Create Sent box URI Uri sentURI = Uri.parse("content://sms/sent"); // List required columns String[] reqCols = new String[] { "_id", "address", "body" }; // Get Content Resolver object, which will deal with Content // Provider ContentResolver cr = getContentResolver(); // Fetch Sent SMS Message from Built-in Content Provider Cursor c = cr.query(sentURI, reqCols, null, null, null); // Attached Cursor with adapter and display in listview adapter = new SimpleCursorAdapter(this, R.layout.row, c, new String[] { "body", "address" }, new int[] { R.id.lblMsg, R.id.lblNumber }); lvMsg.setAdapter(adapter); } if (v == btnDraft) { // Create Draft box URI Uri draftURI = Uri.parse("content://sms/draft"); // List required columns String[] reqCols = new String[] { "_id", "address", "body" }; // Get Content Resolver object, which will deal with Content // Provider ContentResolver cr = getContentResolver(); // Fetch Sent SMS Message from Built-in Content Provider Cursor c = cr.query(draftURI, reqCols, null, null, null); // Attached Cursor with adapter and display in listview adapter = new SimpleCursorAdapter(this, R.layout.row, c, new String[] { "body", "address" }, new int[] { R.id.lblMsg, R.id.lblNumber }); lvMsg.setAdapter(adapter); } } }

Answer 1

您正在从以下代码获取短信数据

String[] reqCols = new String[] { "_id", "address", "body" };

        // Get Content Resolver object, which will deal with Content
        // Provider
        ContentResolver cr = getContentResolver();

        // Fetch Sent SMS Message from Built-in Content Provider
        Cursor c = cr.query(sentURI, reqCols, null, null, null);

现在您需要做的就是从游标中获取数据并将其插入到您的数据库中，要么使用原始查询，要么使用内容提供程序。

有关更多信息，请阅读从 android 设备获取收件箱消息以显示在自定义列表视图中