Android的微调适配器和棒棒糖 [英] Android Spinner Adapters and Lollipop
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问题描述
很多人一样，我在我的Android应用程序中使用Parse.com。当我使用一个ParseQueryAdapter的片段来检索数据并把它传递给一个微调
java.lang.IllegalArgumentException异常：微调适配器视图类型数必须为1
和应用程序崩溃。
我已经寻找修复，我知道这是parse.com而不是我要解决的问题。但是，我真想让我的应用程序看起来材料设计，如果我的应用程序targetSdkVersion 19的状态栏始终为黑色。
有针对此问题，我不知道答案，我可以直接在的问题，因为我没有特权不问。这个社区
更新：
我按照<一的code href=\"http://stackoverflow.com/questions/30283189/spinner-adapter-issue-in-android-5-0/30283548#30283548\">this回答，但一个错误说 MyParseAdapter没有类型参数。
你能解释一下我，我做错了什么？
感谢
编辑：
公共无效addItemsOnSpinner（）{ //实例一QueryFactory定义ParseQuery用于在此获取的项目
//适配器。
MyParseAdapter.QueryFactory＆LT;＆的parseObject GT;厂=
新MyParseAdapter.QueryFactory＆LT;＆的parseObject GT;（）{
公共ParseQuery创建（）{
ParseQuery查询=新ParseQuery（书）;
//query.whereEqualTo(\"activated，真正的）;
query.orderByAscending（称号）;
返回查询;
}
}; //合格出厂到ParseQueryAdapter的构造。
ParseQueryAdapter＆LT;＆的parseObject GT;适配器=新MyParseAdapter＆LT;＆的parseObject GT;（getActivity（），厂）;
adapter.setTextKey（称号）;
/ * //也许在设置了一组新的ParseObjects成功加载到被解雇的回调。
adapter.addOnQueryLoadListener（新OnQueryLoadListener＆LT;＆的parseObject GT;（）{
公共无效onLoading（）{
//触发任何加载UI
} 公共无效onLoaded（列表＆LT;＆的parseObject GT;对象，ParseException的E）{
//执行任何负载后的逻辑，隐藏装载UI
}
}）; * / spinnerBook.setPopupBackgroundResource（R.drawable.spinner_style）;
spinnerBook.setAdapter（适配器）; spinnerBook.setOnItemSelectedListener（新AdapterView.OnItemSelectedListener（）{
公共无效onItemSelected（适配器视图＆LT;＆GT;母公司，观景，INT POS，长ID）{ Toast.makeText（parent.getContext（），
OnItemSelectedListener：+ parent.getItemAtPosition（POS）的ToString（）
Toast.LENGTH_SHORT）.show（）;
// Log.d（测试，spinnerBook.getSelectedItem（）的toString（））;
// Log.d（test2的parent.getItemAtPosition（POS）的ToString（））;
的parseObject项目=（的parseObject）parent.getAdapter（）的getItem（POS）。
。OBJECTID = item.getObjectId（）的toString（）; //Log.d(\"test3\",objectID）; ParseQuery＆LT;＆的parseObject GT;查询= ParseQuery.getQuery（书）;
query.getInBackground（OBJECTID，新GetCallback＆LT;＆的parseObject GT;（）{
公共无效做过（的parseObject对象，ParseException的E）{
如果（E == NULL）{
//对象将是你的游戏得分
BOOKTITLE = object.getString（标题）;
txtBookAuthor.setText（object.getString（作家））;
txtBookISBN.setText（object.getString（国际标准书号））;
//类= object.getString（类）;
}其他{
// 出了些问题
}
}
}）;
} 公共无效onNothingSelected（适配器视图＆LT;＆GT;为arg0）{ }
}）;}
解决方案
这是我如何解决了这个问题。
首先我创建了一个新的类像这样
公共类MyParseAdapter扩展ParseQueryAdapter＆LT;＆的parseObject GT; { 公共MyParseAdapter（上下文的背景下，QueryFactory＆LT;＆的parseObject GT; clazz所）{
超（背景下，clazz所）;
} @覆盖
公众诠释getViewTypeCount（）{
返回1;
}
}
和我更换一次ParseQueryAdapter与MyParseAdapter
就连声明
试试这个
公共无效addItemsOnSpinner（）{ //实例一QueryFactory定义ParseQuery用于在此获取的项目
//适配器。
MyParseAdapter.QueryFactory＆LT;＆的parseObject GT;厂=
新MyParseAdapter.QueryFactory＆LT;＆的parseObject GT;（）{
公共ParseQuery创建（）{
ParseQuery查询=新ParseQuery（书）;
//query.whereEqualTo(\"activated，真正的）;
query.orderByAscending（称号）;
返回查询;
}
}; //合格出厂到ParseQueryAdapter的构造。
MyParseAdapter适配器=新MyParseAdapter（getActivity（），厂）;
adapter.setTextKey（称号）;
/ * //也许在设置了一组新的ParseObjects成功加载到被解雇的回调。
adapter.addOnQueryLoadListener（新OnQueryLoadListener＆LT;＆的parseObject GT;（）{
公共无效onLoading（）{
//触发任何加载UI
} 公共无效onLoaded（列表＆LT;＆的parseObject GT;对象，ParseException的E）{
//执行任何负载后的逻辑，隐藏装载UI
}
}）; * / spinnerBook.setPopupBackgroundResource（R.drawable.spinner_style）;
spinnerBook.setAdapter（适配器）; spinnerBook.setOnItemSelectedListener（新AdapterView.OnItemSelectedListener（）{
公共无效onItemSelected（适配器视图＆LT;＆GT;母公司，观景，INT POS，长ID）{ Toast.makeText（parent.getContext（），
OnItemSelectedListener：+ parent.getItemAtPosition（POS）的ToString（）
Toast.LENGTH_SHORT）.show（）;
// Log.d（测试，spinnerBook.getSelectedItem（）的toString（））;
// Log.d（test2的parent.getItemAtPosition（POS）的ToString（））;
的parseObject项目=（的parseObject）parent.getAdapter（）的getItem（POS）。
。OBJECTID = item.getObjectId（）的toString（）; //Log.d(\"test3\",objectID）; ParseQuery＆LT;＆的parseObject GT;查询= ParseQuery.getQuery（书）;
query.getInBackground（OBJECTID，新GetCallback＆LT;＆的parseObject GT;（）{
公共无效做过（的parseObject对象，ParseException的E）{
如果（E == NULL）{
//对象将是你的游戏得分
BOOKTITLE = object.getString（标题）;
txtBookAuthor.setText（object.getString（作家））;
txtBookISBN.setText（object.getString（国际标准书号））;
//类= object.getString（类）;
}其他{
// 出了些问题
}
}
}）;
} 公共无效onNothingSelected（适配器视图＆LT;＆GT;为arg0）{ }
}）;}
Like many others, I'm using Parse.com in my android application. When I use a ParseQueryAdapter in a fragment to retrieve data and pass it to a spinner a
java.lang.IllegalArgumentException: Spinner adapter view type count must be 1
and the application crash.
I have searched for a fix and I know that this is a problem that parse.com and not me have to resolve. But, I really want to make my app looks Material Design and if my app targetSdkVersion 19 the status bar is always black.
There is an answer for this problem that I don't understand and I can't ask directly in the question because I don't have privileges. A member of this community suggest to extend the parseadapter and @override the getViewTypeCount with this code. I'm a newbie in Android and I don't know how to properly follow that suggestion. I will appreciate if you guys help me with this.
Update:
I'm following the code in this answer, but an error says MyParseAdapter does not have type parameters.
Can you explain me what I'm doing wrong ?
Thanks
EDIT:
public void addItemsOnSpinner (){
// Instantiate a QueryFactory to define the ParseQuery to be used for fetching items in this
// Adapter.
MyParseAdapter.QueryFactory<ParseObject> factory =
new MyParseAdapter.QueryFactory<ParseObject>() {
public ParseQuery create() {
ParseQuery query = new ParseQuery("Books");
//query.whereEqualTo("activated", true);
query.orderByAscending("title");
return query;
}
};
// Pass the factory into the ParseQueryAdapter's constructor.
ParseQueryAdapter<ParseObject> adapter = new MyParseAdapter<ParseObject>(getActivity(), factory);
adapter.setTextKey("title");
/* // Perhaps set a callback to be fired upon successful loading of a new set of ParseObjects.
adapter.addOnQueryLoadListener(new OnQueryLoadListener<ParseObject>() {
public void onLoading() {
// Trigger any "loading" UI
}
public void onLoaded(List<ParseObject> objects, ParseException e) {
// Execute any post-loading logic, hide "loading" UI
}
});*/
spinnerBook.setPopupBackgroundResource(R.drawable.spinner_style);
spinnerBook.setAdapter(adapter);
spinnerBook.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
Toast.makeText(parent.getContext(),
"OnItemSelectedListener : " + parent.getItemAtPosition(pos).toString(),
Toast.LENGTH_SHORT).show();
// Log.d("test", spinnerBook.getSelectedItem().toString());
// Log.d("test2", parent.getItemAtPosition(pos).toString());
ParseObject item = (ParseObject) parent.getAdapter().getItem(pos);
objectID = item.getObjectId().toString();
//Log.d("test3",objectID);
ParseQuery<ParseObject> query = ParseQuery.getQuery("Books");
query.getInBackground(objectID, new GetCallback<ParseObject>() {
public void done(ParseObject object, ParseException e) {
if (e == null) {
// object will be your game score
bookTitle = object.getString("title");
txtBookAuthor.setText(object.getString("author"));
txtBookISBN.setText(object.getString("isbn"));
// category = object.getString("category");
} else {
// something went wrong
}
}
});
}
public void onNothingSelected(AdapterView<?> arg0) {
}
});
}
解决方案
this is how i solved the problem
first i created a new class like this
public class MyParseAdapter extends ParseQueryAdapter<ParseObject> {
public MyParseAdapter(Context context, QueryFactory<ParseObject> clazz) {
super(context, clazz);
}
@Override
public int getViewTypeCount() {
return 1;
}
}
and i replaced every ParseQueryAdapter with MyParseAdapter even the declaration
try this
public void addItemsOnSpinner (){
// Instantiate a QueryFactory to define the ParseQuery to be used for fetching items in this
// Adapter.
MyParseAdapter.QueryFactory<ParseObject> factory =
new MyParseAdapter.QueryFactory<ParseObject>() {
public ParseQuery create() {
ParseQuery query = new ParseQuery("Books");
//query.whereEqualTo("activated", true);
query.orderByAscending("title");
return query;
}
};
// Pass the factory into the ParseQueryAdapter's constructor.
MyParseAdapter adapter = new MyParseAdapter(getActivity(), factory);
adapter.setTextKey("title");
/* // Perhaps set a callback to be fired upon successful loading of a new set of ParseObjects.
adapter.addOnQueryLoadListener(new OnQueryLoadListener<ParseObject>() {
public void onLoading() {
// Trigger any "loading" UI
}
public void onLoaded(List<ParseObject> objects, ParseException e) {
// Execute any post-loading logic, hide "loading" UI
}
});*/
spinnerBook.setPopupBackgroundResource(R.drawable.spinner_style);
spinnerBook.setAdapter(adapter);
spinnerBook.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
Toast.makeText(parent.getContext(),
"OnItemSelectedListener : " + parent.getItemAtPosition(pos).toString(),
Toast.LENGTH_SHORT).show();
// Log.d("test", spinnerBook.getSelectedItem().toString());
// Log.d("test2", parent.getItemAtPosition(pos).toString());
ParseObject item = (ParseObject) parent.getAdapter().getItem(pos);
objectID = item.getObjectId().toString();
//Log.d("test3",objectID);
ParseQuery<ParseObject> query = ParseQuery.getQuery("Books");
query.getInBackground(objectID, new GetCallback<ParseObject>() {
public void done(ParseObject object, ParseException e) {
if (e == null) {
// object will be your game score
bookTitle = object.getString("title");
txtBookAuthor.setText(object.getString("author"));
txtBookISBN.setText(object.getString("isbn"));
// category = object.getString("category");
} else {
// something went wrong
}
}
});
}
public void onNothingSelected(AdapterView<?> arg0) {
}
});
}
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