虽然我在PagerAdapter中覆盖了destroyItem(…),在ViewPager中滑动页面时收到错误
UnsupportedOperationException required method destroyItem was not
overridden
public class PropertyPagerAdapter extends PagerAdapter {
private Context _context;
private int layoutId;
private List<AddPropertyInfo> dataList;
public PropertyPagerAdapter(Context context,int resourceId,List<AddPropertyInfo> objects) {
// TODO Auto-generated constructor stub
_context = context;
layoutId = resourceId;
dataList = objects;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return dataList.size();
}
@Override
public boolean isViewFromObject(View v,Object obj) {
// TODO Auto-generated method stub
return v == ((View) obj);
}
@Override
public void destroyItem(ViewGroup container,int position,Object object) {
// TODO Auto-generated method stub
super.destroyItem(container,position,object);
((ViewPager) container).removeView((View) object);
}
@SuppressLint("DefaultLocale")
@Override
public Object instantiateItem(ViewGroup container,int position) {
// TODO Auto-generated method stub
LayoutInflater inflater = (LayoutInflater) _context.getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
View pagerView = inflater.inflate(layoutId,container,false);
TextView propertyNameTxtView = (TextView) pagerView.
findViewById(R.id.propertyNameTxtView);
TextView netIncomeTxtView = (TextView) pagerView.
findViewById(R.id.netIncomeTxtView);
TextView netIncomeValueTxtView = (TextView) pagerView.
findViewById(R.id.netIncomeValueTxtView);
TextView netExpTxtView = (TextView) pagerView.
findViewById(R.id.netExpTxtView);
TextView netExpValueTxtView = (TextView) pagerView.
findViewById(R.id.netExpValueTxtView);
TextView netProfitTxtView = (TextView) pagerView.
findViewById(R.id.netProfitTxtView);
TextView netProfitValueTxtView = (TextView) pagerView.
findViewById(R.id.netProfitValueTxtView);
propertyNameTxtView.setTypeface(Utils.getRegularTypeface(_context));
netIncomeTxtView.setTypeface(Utils.getRegularTypeface(_context));
netIncomeValueTxtView.setTypeface(Utils.getRegularTypeface(_context));
netExpTxtView.setTypeface(Utils.getRegularTypeface(_context));
netExpValueTxtView.setTypeface(Utils.getRegularTypeface(_context));
netProfitTxtView.setTypeface(Utils.getRegularTypeface(_context));
netProfitValueTxtView.setTypeface(Utils.getRegularTypeface(_context));
String propertyName = "";
double netIncomeVal;
double netExpVal;
double netProfitVal;
AddPropertyInfo addPropertyInfo = dataList.get(position);
netIncomeVal = addPropertyInfo.getIncomeAmnt();
netExpVal = addPropertyInfo.getExpAmnt();
netProfitVal = netIncomeVal - netExpVal;
propertyName = addPropertyInfo.getPropertyName();
String netIncomeValStr = String.format("%.2f",netIncomeVal);
String netExpValStr = String.format("%.2f",netExpVal);
String netProfitValStr = String.format("%.2f",netProfitVal);
propertyNameTxtView.setText(propertyName);
netIncomeValueTxtView.setText(_context.getResources().
getString(R.string.doller) + netIncomeValStr);
netExpValueTxtView.setText(_context.getResources().
getString(R.string.doller) + netExpValStr);
netProfitValueTxtView.setText(_context.getResources().
getString(R.string.doller) + netProfitValStr);
((ViewPager) container).addView(pagerView);
return pagerView;
}
}
错误日志
10-30 18:59:11.711: E/AndroidRuntime(27093): FATAL EXCEPTION: main 10-30 18:59:11.711: E/AndroidRuntime(27093): Process: com.teklabs.portfoliomanagenent,PID: 27093 10-30 18:59:11.711: E/AndroidRuntime(27093): java.lang.UnsupportedOperationException: required method destroyItem was not overridden 10-30 18:59:11.711: E/AndroidRuntime(27093): at android.support.v4.view.PagerAdapter.destroyItem(PagerAdapter.java:192) 10-30 18:59:11.711: E/AndroidRuntime(27093): at android.support.v4.view.PagerAdapter.destroyItem(PagerAdapter.java:124) 10-30 18:59:11.711: E/AndroidRuntime(27093): at com.teklabs.portfoliomanagenent.adapter.PropertyPagerAdapter.destroyItem(PropertyPagerAdapter.java:47) 10-30 18:59:11.711: E/AndroidRuntime(27093): at android.support.v4.view.ViewPager.populate(ViewPager.java:1002) 10-30 18:59:11.711: E/AndroidRuntime(27093): at android.support.v4.view.ViewPager.populate(ViewPager.java:914) 10-30 18:59:11.711: E/AndroidRuntime(27093): at android.support.v4.view.ViewPager$3.run(ViewPager.java:244) 10-30 18:59:11.711: E/AndroidRuntime(27093): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:803) 10-30 18:59:11.711: E/AndroidRuntime(27093): at android.view.Choreographer.doCallbacks(Choreographer.java:603) 10-30 18:59:11.711: E/AndroidRuntime(27093): at android.view.Choreographer.doFrame(Choreographer.java:572) 10-30 18:59:11.711: E/AndroidRuntime(27093): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:789) 10-30 18:59:11.711: E/AndroidRuntime(27093): at android.os.Handler.handleCallback(Handler.java:733) 10-30 18:59:11.711: E/AndroidRuntime(27093): at android.os.Handler.dispatchMessage(Handler.java:95) 10-30 18:59:11.711: E/AndroidRuntime(27093): at android.os.Looper.loop(Looper.java:157) 10-30 18:59:11.711: E/AndroidRuntime(27093): at android.app.ActivityThread.main(ActivityThread.java:5356) 10-30 18:59:11.711: E/AndroidRuntime(27093): at java.lang.reflect.Method.invokeNative(Native Method) 10-30 18:59:11.711: E/AndroidRuntime(27093): at java.lang.reflect.Method.invoke(Method.java:515) 10-30 18:59:11.711: E/AndroidRuntime(27093): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265) 10-30 18:59:11.711: E/AndroidRuntime(27093): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081) 10-30 18:59:11.711: E/AndroidRuntime(27093): at dalvik.system.NativeStart.main(Native Method)
如何解决？
解决方法
不要叫超级去掉
super.destroyItem(container,object);
PagerAdapter源代码的摘录
123 public void More ...destroyItem(ViewGroup container,Object object) {
124 destroyItem((View) container,object);
125 }
191 public void More ...destroyItem(View container,Object object) {
192 throw new UnsupportedOperationException("required method destroyItem was not overridden");
193 }