谁能帮我解释一下为什么函数getInBackground没有运行我想从 android 的 parse 中获取数据。这是我的类，它调用了类中fetchData(String themeId)的parseManipulate函数
public class selectTheme extends Activity implements OnClickListener{
Button gBtn;
Button rBtn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.themeselection);
String themeid = "ECGo4oSKgU";
ParseManipulate pm = new ParseManipulate();
pm.fetchData(themeid);
/* gBtn = (Button)findViewById(R.id.greentheme);
rBtn = (Button)findViewById(R.id.redtheme);
gBtn.setOnClickListener(this);
rBtn.setOnClickListener(this);
*/
}
这是我在 ParseManipulate 类中的 fetchData() 函数。编译器不运行函数 getInBackground() 函数并在函数右括号的末尾跳转
public class ParseManipulate {
public void fetchData(String ThemeId)
{
ParseQuery<ParseObject> pq = ParseQuery.getQuery("testThemes");
pq.getInBackground(ThemeId, new GetCallback<ParseObject>(){
@Override
public void done(ParseObject object, ParseException e) {
// TODO Auto-generated method stub
if(e == null)
{
// value = object.getString("ThemeName");
Log.d("ParseObject", ""+object.getString("ThemeName"));
}
else
{
// Toast.makeText(getApplicationContext(), "error in data fetching", Toast.LENGTH_SHORT).show();
}
}
});
}
}