我试图采用无休止的适应器。 一项活动——说是一种口头行为,它提供了扩展活动的抽象类别。 在一些例子中,我看到,活动从清单活动延伸――是关键吗? 我还有一份清单改编者,提供基调适应器,而ArrayAdapter则使用。 当我到名单上结束时,我有了一个错误(下文表2)。
Would you mind point what the problem might be and whether there re uncertainties in this way of implementing of Endless ? Additionaly I would appreciate links on thorough examples. I ve seen demo - but it s not enough clear for me. Thanks.
My activity
public class ClipsActivity extends AbstractActivity{
@Override
public void onCreate(Bundle savedInstanceState) {
try {
super.onCreate(savedInstanceState);
setContentView(R.layout.clips);
_init();
ListView clipList = (ListView) findViewById(R.id.clipList);
EndlessClipListAdapter endlessClipsList = new EndlessClipListAdapter(getApplicationContext(), new ClipListAdapter(this, _getClips()), R.id.downloadBar);
clipList.setAdapter(endlessClipsList);
} catch (HTTPFactoryException e) {
e.printStackTrace();
}
}
我的无休止者
public class EndlessClipListAdapter extends EndlessAdapter {
private RotateAnimation rotate=null;
public EndlessClipListAdapter(Context context, ListAdapter wrapped, int pendingResource) {
super(context, wrapped, pendingResource);
rotate=new RotateAnimation(0f, 360f, Animation.RELATIVE_TO_SELF,
0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
rotate.setDuration(600);
rotate.setRepeatMode(Animation.RESTART);
rotate.setRepeatCount(Animation.INFINITE);
}
@Override
protected boolean cacheInBackground() throws Exception {
SystemClock.sleep(10000);
return(getWrappedAdapter().getCount()<14);
}
@Override
protected void appendCachedData() {
if (getWrappedAdapter().getCount()<14) {
}
}
@Override
protected View getPendingView(ViewGroup parent) {
//View row=getLayoutInflater().inflate(R.layout.row, null);
//LayoutInflater inflater = (LayoutInflater) context.getSystemService( Context.LAYOUT_INFLATER_SERVICE );
LayoutInflater inflater = (LayoutInflater) this.getContext().getSystemService( Context.LAYOUT_INFLATER_SERVICE );
View row = inflater.inflate(R.layout.row, null);
View child=row.findViewById(android.R.id.text1);
child.setVisibility(View.GONE);
child=row.findViewById(R.id.throbber);
child.setVisibility(View.VISIBLE);
child.startAnimation(rotate);
return(row);
}
}
后勤
04-20 13:41:43.083: W/dalvikvm(480): threadid=1: thread exiting with uncaught exception (group=0x40015560)
04-20 13:41:43.093: E/AndroidRuntime(480): FATAL EXCEPTION: main
04-20 13:41:43.093: E/AndroidRuntime(480): java.lang.IndexOutOfBoundsException: Invalid index 15, size is 15
04-20 13:41:43.093: E/AndroidRuntime(480): at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:257)
04-20 13:41:43.093: E/AndroidRuntime(480): at java.util.ArrayList.get(ArrayList.java:311)
04-20 13:41:43.093: E/AndroidRuntime(480): at ru.localhost.xxxx.android.view.ClipListAdapter.getItemId(ClipListAdapter.java:47)
04-20 13:41:43.093: E/AndroidRuntime(480): at com.commonsware.cwac.adapter.AdapterWrapper.getItemId(AdapterWrapper.java:127)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.widget.AdapterView.getItemIdAtPosition(AdapterView.java:745)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.widget.AdapterView.setSelectedPositionInt(AdapterView.java:1088)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.widget.ListView.arrowScrollImpl(ListView.java:2324)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.widget.ListView.arrowScroll(ListView.java:2287)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.widget.ListView.commonKey(ListView.java:2089)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.widget.ListView.onKeyDown(ListView.java:2036)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.view.KeyEvent.dispatch(KeyEvent.java:1256)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.view.View.dispatchKeyEvent(View.java:3855)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:787)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.widget.ListView.dispatchKeyEvent(ListView.java:2021)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:789)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:789)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:789)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:789)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:789)
04-20 13:41:43.093: E/AndroidRuntime(480): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchKeyEvent(PhoneWindow.java:1687)
04-20 13:41:43.093: E/AndroidRuntime(480): at com.android.internal.policy.impl.PhoneWindow.superDispatchKeyEvent(PhoneWindow.java:1120)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.app.Activity.dispatchKeyEvent(Activity.java:2073)
04-20 13:41:43.093: E/AndroidRuntime(480): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:1663)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.view.ViewRoot.deliverKeyEventToViewHierarchy(ViewRoot.java:2560)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.view.ViewRoot.handleFinishedEvent(ViewRoot.java:2535)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.view.ViewRoot.handleMessage(ViewRoot.java:1867)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.os.Handler.dispatchMessage(Handler.java:99)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.os.Looper.loop(Looper.java:123)
04-20 13:41:43.093: E/AndroidRuntime(480): at android.app.ActivityThread.main(ActivityThread.java:3683)
04-20 13:41:43.093: E/AndroidRuntime(480): at java.lang.reflect.Method.invokeNative(Native Method)
04-20 13:41:43.093: E/AndroidRuntime(480): at java.lang.reflect.Method.invoke(Method.java:507)
04-20 13:41:43.093: E/AndroidRuntime(480): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
04-20 13:41:43.093: E/AndroidRuntime(480): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
04-20 13:41:43.093: E/AndroidRuntime(480): at dalvik.system.NativeStart.main(Native Method)