自定义微调适配器simple_spinner_dropdown_item显示不正确 [英] Custom spinner adapter simple_spinner_dropdown_item not displaying correctly
问题描述
我从SQLite数据库中获取数据,并将其分配给数据对象。我使用的是自定义的微调适配器(实现 SpinnerAdapter
)把他们在纺纱厂,以覆盖的getItem()
和 getItemId()
的方法。但是, android.R.layout.simple_spinner_dropdown_item
无法正确显示(从截图我的Galaxy Tab 2 10.1):
相反这是从一个数组填充 R.array
旋转器(正确的外观/尺寸):
本code完成:
ArrayAdapter< CharSequence的>适配器= ArrayAdapter.createFromResource(getActivity(),R.array.quote_prices,android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(适配器);
我无法得到这一下通过实施/延长某种类型的适配器(我自己也尝试延长 BaseAdapter
无济于事)。这是code我的微调适配器,因为它主张:
公共类MySpinnerAdapter实现SpinnerAdapter {
私人上下文的背景下;
/ **
*内部数据(与对象ArrayList中)。
* /
私人名单,LT ;?扩展BaseDO>数据;
公共MySpinnerAdapter(上下文的背景下,列表与LT;延伸BaseDO>数据){
this.context =背景;
this.data =数据;
}
/ **
*返回ArrayList的大小
* /
@覆盖
公众诠释getCount将(){
返回data.size();
}
@覆盖
公共对象的getItem(INT位置){
返回data.get(位置);
}
@覆盖
众长getItemId(INT位置){
返回data.get(位置).getId();
}
@覆盖
公众诠释getItemViewType(INT位置){
返回0;
}
@覆盖
公众诠释getViewTypeCount(){
返回1;
}
@覆盖
公共布尔hasStableIds(){
返回false;
}
@覆盖
公共布尔的isEmpty(){
返回false;
}
@覆盖
公共查看getDropDownView(INT位置,查看convertView,ViewGroup中父){
如果(convertView == NULL){
LayoutInflater VI =(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = vi.inflate(android.R.layout.simple_spinner_dropdown_item,NULL);
}
((TextView中)convertView).setText(data.get(位置)的ToString());
返回convertView;
}
@覆盖
公共查看getView(INT位置,查看convertView,ViewGroup中父){
TextView中的TextView =(TextView中)View.inflate(背景下,android.R.layout.simple_spinner_item,NULL);
textView.setText(data.get(位置)的ToString());
返回的TextView;
}
@覆盖
公共无效registerDataSetObserver(DataSetObserver观察者){
}
@覆盖
公共无效unregisterDataSetObserver(DataSetObserver观察者){
}
公开名单,LT ;?扩展BaseDO>的getData(){
返回的数据;
}
}
任何帮助将是AP preciated。
编辑:我忘了提,这就是所谓的使用
spnnrTerm.setAdapter(新MySpinnerAdapter(getActivity(),termlist中));
我知道这个问题是旧的,但我一直有同样的问题,刚才想通了这个问题。检查源<一后href="https://github.com/android/platform_frameworks_base/blob/master/core/java/android/widget/ArrayAdapter.java"相对=nofollow> ArrayAdapter.java 我发现它传递的ViewGroup来充气,我不是。这是问题一直。
@覆盖
公共查看getDropDownView(INT位置,查看convertView,ViewGroup中父){
如果(convertView == NULL){
LayoutInflater VI =(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = vi.inflate(android.R.layout.simple_spinner_dropdown_item,父母,假);
}
((TextView中)convertView).setText(data.get(位置)的ToString());
返回convertView;
}
@覆盖
公共查看getView(INT位置,查看convertView,ViewGroup中父){
TextView中的TextView =(TextView中)View.inflate(背景下,android.R.layout.simple_spinner_item,NULL);
textView.setText(data.get(位置)的ToString());
返回的TextView;
}
I am getting data from an SQLite database and assigning them to data objects. I am using a custom spinner adapter (implements SpinnerAdapter
) to put them in spinners so as to override the getItem()
and getItemId()
methods. However, the android.R.layout.simple_spinner_dropdown_item
is not displaying correctly (screenshots from my Galaxy Tab 2 10.1):
By contrast this is a spinner which is populated from an array in R.array
(the correct look/size):
Done by this code:
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(getActivity(), R.array.quote_prices, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
I am unable to get this look by implementing/extending some sort of adapter (I have also tried extending BaseAdapter
to no avail). This is the code for my spinner adapter as it stands:
public class MySpinnerAdapter implements SpinnerAdapter {
private Context context;
/**
* The internal data (the ArrayList with the Objects).
*/
private List<? extends BaseDO> data;
public MySpinnerAdapter(Context context, List<?extends BaseDO> data){
this.context = context;
this.data = data;
}
/**
* Returns the Size of the ArrayList
*/
@Override
public int getCount() {
return data.size();
}
@Override
public Object getItem(int position) {
return data.get(position);
}
@Override
public long getItemId(int position) {
return data.get(position).getId();
}
@Override
public int getItemViewType(int position) {
return 0;
}
@Override
public int getViewTypeCount() {
return 1;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isEmpty() {
return false;
}
@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater vi = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = vi.inflate(android.R.layout.simple_spinner_dropdown_item, null);
}
((TextView) convertView).setText(data.get(position).toString());
return convertView;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
TextView textView = (TextView) View.inflate(context, android.R.layout.simple_spinner_item, null);
textView.setText(data.get(position).toString());
return textView;
}
@Override
public void registerDataSetObserver(DataSetObserver observer) {
}
@Override
public void unregisterDataSetObserver(DataSetObserver observer) {
}
public List<? extends BaseDO> getData() {
return data;
}
}
Any help would be appreciated.
EDIT: I forgot to mention that this is called using
spnnrTerm.setAdapter(new MySpinnerAdapter(getActivity(), termList));
I know this question is old but I've been having the same issue and have just figured out the problem. After examining the source for ArrayAdapter.java I noticed it was passing the ViewGroup to the inflater and I wasn't. This was the problem all along.
@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater vi = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = vi.inflate(android.R.layout.simple_spinner_dropdown_item, parent, false);
}
((TextView) convertView).setText(data.get(position).toString());
return convertView;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
TextView textView = (TextView) View.inflate(context, android.R.layout.simple_spinner_item, null);
textView.setText(data.get(position).toString());
return textView;
}
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