【发布时间】：2016-10-05 08:38:30
【问题描述】：
我正在从 sqlite 填充两个微调器。现在我想要的是，当我的活动被创建时，所有状态都填充在spnState 中。但是当我从微调器中选择任何状态时，我想在spnDistrict 中从 sqlite 绑定 District。当我在该地区列表未显示在地区微调器中它只显示“选择地区”之后选择州时，我遇到了问题。我怎样才能做到这一点。
public void SpinnerValue(){
/*-----------------------Fill State start here----------------------------*/
try {
ArrayList<String> state_array = new ArrayList<String>();
state_array.add("Select State");
Cursor cursor_State = db.rawQuery("SELECT nSerialNo as _id,cCodeName FROM CodeMaster where nCtgId = 6", null);
if (cursor_State.moveToFirst()) {
do {
//assing values
String stateID = cursor_State.getString(0);
String stateName = cursor_State.getString(1);
stateData = stateName;
state_array.add(stateData);
} while (cursor_State.moveToNext());
}
ArrayAdapter my_Adapter = new ArrayAdapter(getActivity(), android.R.layout.simple_list_item_1, state_array);
spnState.setAdapter(my_Adapter);
cursor_State.close();
spnState.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
state = spnState.getSelectedItem().toString();
Cursor cursor = db.rawQuery("SELECT nSerialNo FROM CodeMaster where cCodeName = '" + state + "'", null);
if (cursor.moveToFirst()) {
do {
//assing values
stateCodeId = cursor.getString(0);
} while (cursor.moveToNext());
}
cursor.close();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
} catch (Exception e) {
e.printStackTrace();
}
/*-----------------------Fill District start here----------------------------*/
try {
ArrayList<String> district_array = new ArrayList<String>();
district_array.add("Select District");
Cursor cursor_District = db.rawQuery("SELECT nSerialNo as _id,cCodeName FROM CodeMaster where nParentSerialNo = '"+stateCodeId+"'", null);
if (cursor_District.moveToFirst()) {
do {
//assing values
String districtID = cursor_District.getString(0);
String districtName = cursor_District.getString(1);
districtData = districtName;
district_array.add(districtData);
} while (cursor_District.moveToNext());
}
ArrayAdapter district_Adapter = new ArrayAdapter(getActivity(), android.R.layout.simple_list_item_1, district_array);
spnDistrict.setAdapter(district_Adapter);
cursor_District.close();
spnDistrict.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
district = spnDistrict.getSelectedItem().toString();
Cursor cursor = db.rawQuery("SELECT nSerialNo FROM CodeMaster where cCodeName = '" + district + "'", null);
if (cursor.moveToFirst()) {
do {
//assing values
districtCodeId = cursor.getString(0);
} while (cursor.moveToNext());
}
cursor.close();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
【问题讨论】：
-
你把所有这些代码放在哪里了？以一种简单的方法或您是如何管理的？为此放置整个代码
-
我把这段代码放在函数中，然后在 onCreate 中调用那个函数。
-
整个代码或区你有单独的？
-
把你的日志放在这里。
-
检查我的答案，它会帮助你