如何按ID检索特定数据并在textview中显示?而不是检索数据并显示listview中的所有数据。请帮忙!
公共类KaikaiProfileActivity扩展了ListActivity {
private Cursor animals;
private MyDatabase db;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
db = new MyDatabase(this);
animals = db.getAnimals(); // you would not typically call this on the main thread
ListAdapter adapter = new SimpleCursorAdapter(this,
android.R.layout.simple_list_item_2,
animals,
new String[] {"animalName","animalPersonality"},
new int[] {android.R.id.text1, android.R.id.text2});;
getListView().setAdapter(adapter);
}
@Override
protected void onDestroy() {
super.onDestroy();
animals.close();
db.close();
}
//检索所有数据 如何从特定行检索数据? public Cursor getAnimals(){
SQLiteDatabase db = getReadableDatabase();
SQLiteQueryBuilder qb = new SQLiteQueryBuilder();
String [] sqlSelect = {"0_id", "animalName", "animalInfo","ImageName","animalGender","animalDOB",
"animalDOB", "animalBirthPlace", "animalPersonality", "animalFeatures", "animalFood", "animalPastTime"
};
String sqlTables = "AnimalInfo";
qb.setTables(sqlTables);
Cursor c = qb.query(db, sqlSelect, null, null,
null, null, null);
c.moveToFirst();
return c;
}
答案 0 :(得分:0)
使用c.moveToPosition(int index)
代替c.moveToFirst()
来获取该特定索引的记录
例如,如果您想要返回第一条记录,请使用c.moveToPosition(0)
,使用c.moveToPosition(1)
进行第二次记录,依此类推
如果您想按列值检索,请使用qb.appendWhere("<colname>=<value>") ;