ListView を LinkedList で埋めようとしています。実装に何か問題があると思います..しかし、何がわかりません。
これは、私がアダプタを設定している方法です:
public void refreshListView() {
//pManager.simpleSort();
// pManager.getProfiles()
LinkedList<Profile> temp = new LinkedList<Profile>();
temp.add(new Profile("hello", "link", true)); // im kind of testing here
adapter = new CustomAdapter(getApplicationContext(), temp);
list.setAdapter(adapter);
}
これは、いくつかのチュートリアルを使用して作成した CustomAdapter です。
public class CustomAdapter extends BaseAdapter {
private LinkedList<Profile> profiles;
private Context context;
public CustomAdapter(Context context, LinkedList<Profile> input) {
this.context = context;
profiles = input;
}
@Override
public int getCount() {
if (profiles == null) {
return 0;
} else {
return profiles.size();
}
}
@Override
public Profile getItem(int arg0) {
return profiles.get(arg0);
}
@Override
public View getView(int position, View v, ViewGroup parent) {
View out = v;
if (out == null){
out = new ProfileItemView(context, getItem(position));
}
return out;
}
@Override
public long getItemId(int arg0) {
return arg0;
}
}
これは、プロファイルを表示するために作成したカスタム ビューです。
public class ProfileItemView extends RelativeLayout {
public ProfileItemView(Context context, Profile profile) {
super(context, null);
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.list_item, null, true);
ImageView icon = (ImageView) findViewById(R.id.default_icon_view);
if (profile.checkDefault()) {
icon.setImageResource(R.drawable.ic_launcher);
} else {
icon.setImageResource(R.drawable.android_icon);
}
TextView name = (TextView) findViewById(R.id.name_view);
name.setText(profile.getName());
}
}
また、ここにlogcatがあります:
Shutting down VM
threadid=1: thread exiting with uncaught exception (group=0x419c52a0)
FATAL EXCEPTION: main
java.lang.NullPointerException
at com.exp.test.ProfileItemView.<init>(ProfileItemView.java:18)
at com.exp.test.CustomAdapter.getView(CustomAdapter.java:37)
at android.widget.AbsListView.obtainView(AbsListView.java:2402)
at android.widget.ListView.makeAndAddView(ListView.java:1769)
at android.widget.ListView.fillDown(ListView.java:672)
at android.widget.ListView.fillFromTop(ListView.java:733)
at android.widget.ListView.layoutChildren(ListView.java:1622)
at android.widget.AbsListView.onLayout(AbsListView.java:2237)
at android.view.View.layout(View.java:13840)
at android.view.ViewGroup.layout(ViewGroup.java:4372)
at android.widget.RelativeLayout.onLayout(RelativeLayout.java:948)
at android.view.View.layout(View.java:13840)
at android.view.ViewGroup.layout(ViewGroup.java:4372)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:13840)
at android.view.ViewGroup.layout(ViewGroup.java:4372)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1649)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1507)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1420)
at android.view.View.layout(View.java:13840)
at android.view.ViewGroup.layout(ViewGroup.java:4372)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:13840)
at android.view.ViewGroup.layout(ViewGroup.java:4372)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1948)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1758)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1042)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4329)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
at android.view.Choreographer.doCallbacks(Choreographer.java:555)
at android.view.Choreographer.doFrame(Choreographer.java:525)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5118)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:792)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555)
at dalvik.system.NativeStart.main(Native Method)