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Android SQL数据库从特定表加载数据_Android_Sqlite_Listview - Fatal编程技术网

Android SQL数据库从特定表加载数据

Android SQL数据库从特定表加载数据,android,sqlite,listview,Android,Sqlite,Listview,我在应用程序启动时创建一个表,并从EditText字符串名称添加更多表 我的第一个数据库表 public static final String CREATE_ERAMPE_TABLE = "create table details" + "(id integer primary key, username text, metre text, northing double," + "eastings double,identification text, pho

我在应用程序启动时创建一个表,并从EditText字符串名称添加更多表

我的第一个数据库表

public static final String CREATE_ERAMPE_TABLE = "create table details" +
        "(id integer primary key, username text, metre text, northing double," +
        "eastings double,identification text, phone text, date text)";
根据活动创建其他表

SQLiteDatabase db = dbHelper.getWritableDatabase();
    newTableName = dbTableName.getText().toString();
    String sql = "create table "+ newTableName+
            "(id integer primary key, username text, metre text, northing text," +
            "eastings text,identification text, phone text, date text)";
    Log.i("CreateDb=", sql);
将数据插入到特定

  String insertTo = metreUsers.getTableName();

    return database.insert(insertTo, null, cvs);
将所有表名的列表放入listview我使用以下代码

 public ArrayList<RegisteredGroups> getRegisteredGroups(){
    ArrayList<RegisteredGroups> arrTblnames = new ArrayList<RegisteredGroups>();
   // database = dbHelper.getWritableDatabase();
    Cursor c = database.rawQuery("SELECT name FROM sqlite_master WHERE type='table' AND name != 'android_metadata' AND name != 'sqlite_sequence'", null);

    while (c.moveToNext()){
        RegisteredGroups grp = new RegisteredGroups();
        grp.setGroupName(c.getString(c.getColumnIndex("name")));
        arrTblnames.add(grp);
        //get count of entries in every single table
        String countQuery = "SELECT * FROM "+c.getString(c.getColumnIndex("name"));
        Cursor cursor = database.rawQuery(countQuery, null);
        int cnt = cursor.getCount();
        grp.setGroupNumber(String.valueOf(cnt));
    }
public ArrayList loadArtist(){
ArrayList=新建ArrayList();
SQLiteDatabase=getReadableDatabase();
Cursor=database.query(
ArtistMaster.ArtistDetails.TABLE\u名称,
新字符串[]{ArtistMaster.ArtistDetails.COLUMN\u ARTIST\u NAME},
无效的
无效的
无效的
无效的
无效的
);
while(cursor.moveToNext()){
list.add(cursor.getString(
cursor.getColumnIndexOrThrow(
ArtistMaster.ArtistDetails.COLUMN_ARTIST_NAME));
}
退货清单;
}

您的意思是必须从选定的表名中获取数据,对吗?FSM保存我们!为什么要为新用户创建新表?而是在
details
表中创建两个表
users
details
,将外键添加到表
users
…是..我想从所选表中获取数据并将其显示在列表视图中;它很简单,只需从选定的listview项中传递表名,然后从数据库中获取所有数据。。我有5个小组。。每个组有50-100个用户。每个人都对其成员的一切负责。定价、阅读的多样性等。请在回答中添加解释:)
rgGroup = (RegisteredGroups)parent.getItemAtPosition(position);
    if (rgGroup != null){
        Bundle arguments = new Bundle();
        FragmentManager frag = getFragmentManager();
        FragmentTransaction trans = frag.beginTransaction();
        arguments.putParcelable("selectedGroup", rgGroup);
        RegisteredUsersList regs = new RegisteredUsersList();
        regs.setArguments(arguments);
public ArrayList<String> loadArtist(){

    ArrayList<String> list= new ArrayList<>();
    SQLiteDatabase database=getReadableDatabase();

    Cursor cursor =  database.query(
        ArtistMaster.ArtistDetails.TABLE_NAME,
        new String[] {ArtistMaster.ArtistDetails.COLUMN_ARTIST_NAME},
        null,
        null,
        null,
        null,
        null
    );

  while(cursor.moveToNext()) {
      list.add(cursor.getString(
         cursor.getColumnIndexOrThrow(
             ArtistMaster.ArtistDetails.COLUMN_ARTIST_NAME)));
  }

  return list;

}