我有一份药物清单,当用户点击其中一种药物时,它会进入下一个显示药物详细信息的活动。
下面的代码是医学列表的活动..我知道我必须使用onclicklistener ..但我不知道怎么写
public class MedicineView extends Activity
{
private SQLiteDatabase database;
private ArrayList<String> result = new ArrayList<String>();
private ArrayList<Long> idList = new ArrayList<Long>();
private ArrayAdapter<String> adapter;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.medicine_view);
ListView listContent = (ListView)findViewById(R.id.listView1);
DBHelper helper = new DBHelper(this);
database = helper.getWritableDatabase();
// view data
try{
String query = "select * from " + DBHelper.TABLE_MEDICINE;
Cursor c = database.rawQuery(query, null);
if(c!=null)
{
c.moveToFirst();
int getIndex = c.getColumnIndex(DBHelper.MED_ID);
int getNameIndex = c.getColumnIndex(DBHelper.MED_NAME);
int getDosageIndex = c.getColumnIndex(DBHelper.DOSAGE);
int getFrequencyIndex = c.getColumnIndex(DBHelper.FREQUENCY);
if(c.isFirst())
{
do{
idList.add(c.getLong(getIndex));
result.add(c.getString(getNameIndex)+" | " + c.getString(getDosageIndex)
+" | " + c.getString(getFrequencyIndex)+"\n" );
}while(c.moveToNext());
}
}
adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,result);
listContent.setAdapter(adapter);
listContent.setTextFilterEnabled(true);
c.close();
}
catch(SQLException e){
}
listContent.setOnItemClickListener(this);
}
public void onClickHome(View v){
startActivity (new Intent(getApplicationContext(), MenuUtama.class));
}
public void onClickAdd(View v){
startActivity (new Intent(getApplicationContext(), MedicineAdd.class));
}
@Override
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
Intent myIntent = new Intent(v.getContext(), MedicineDetail.class);
myIntent.putExtra("position", position);
startActivityForResult(myIntent, 0);
}
} // end class
然后这是我的详细信息
public class MedicineDetail extends Activity
{
private SQLiteDatabase database;
private ArrayList<Long> idList = new ArrayList<Long>();
ArrayList<String> list = new ArrayList<String>();
Button btnEdit;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.medicine_detail);
int id = getIntent().getIntExtra("id", 2); //i don't know how to do here
btnEdit = (Button)findViewById(R.id.imageButton2);
DBHelper helper = new DBHelper(this);
database = helper.getWritableDatabase();
String sql = "select * from " + DBHelper.TABLE_MEDICINE + " WHERE id = " + id;
Cursor cursor = database.rawQuery(sql, null);
try{
if( cursor != null ){
if (cursor.moveToFirst()) {
do {
idList.add(cursor.getLong(0));
list.add(cursor.getString(1));
list.add(cursor.getString(2));
list.add(cursor.getString(3));
list.add(cursor.getString(4));
list.add(cursor.getString(5));
list.add(cursor.getString(6));
} while (cursor.moveToNext());
}
}
}
catch(SQLException e){
}
cursor.moveToFirst();
TextView StartDate = (TextView) findViewById(R.id.textView8);
TextView EndDate = (TextView)findViewById(R.id.textView9);
TextView MedName = (TextView)findViewById(R.id.textView10);
TextView Dosage = (TextView)findViewById(R.id.textView11);
TextView Frequency = (TextView)findViewById(R.id.textView12);
TextView Instruction = (TextView)findViewById(R.id.textView13);
StartDate.setText(cursor.getString(1));
EndDate.setText(cursor.getString(2));
MedName.setText(cursor.getString(3));
Dosage.setText(cursor.getString(4));
Frequency.setText(cursor.getString(5));
Instruction.setText(cursor.getString(6));
cursor.close();
}
public void onClickHome(View v){
startActivity (new Intent(getApplicationContext(), MedicineView.class));
}
} // end class
我不知道该怎么办,任何人都可以帮助
答案 0 :(得分:1)
使用onItemSelectedListener:arg0将是listview,arg2将是适配器中的项目位置
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3){
}
答案 1 :(得分:1)
您应该让您的类实现onItemClickListener
implements AdapterView.OnItemClickListener
并在onCreate
中添加以下行:
listContent.setOnItemClickListener(this);
然后覆盖:
public void onItemClick(AdapterView<?> parent, View v, int position, long id)
{
Intent intent = createIntentwithExtra(v, position);
startActivity(intent);
}
<强>更新强>
public Intent createIntentwithExtra(View v, int position)
{
Intent intent = new Intent(getApplicationContext(), TaskDetailsActivity.class);
intent.putExtra(KEY_USERNAME, username);
intent.putExtra(KEY_ID, tasksRepository.get(position).getId());
return intent;
}