我正在尝试构建一个联系人应用程序
在主要活动中,我显示所有联系人的列表。
但是,当我在单击列表中的项目后尝试启动活动时,出现错误:
致命异常:main 01-20 09:54:48.407: E/AndroidRuntime(8459): java.lang.IllegalStateException: 这应该只在游标有效时调用
似乎适配器方法(getView,getCount)以某种方式不断调用
我的代码如下,
public void onCreate(Bundle icicle)
{
super.onCreate(icicle);
setContentView(R.layout.main);
initComponents();
final String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC";
c = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null, null, null, sortOrder);
startManagingCursor(c);
final MySimpleArrayAdapter adapter = new MySimpleArrayAdapter(mContext, c);
list.setAdapter(adapter);
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
Intent intent = new Intent (mContext, SingleContact.class);
startActivity(intent);
}
});
}
/**
* An adapter which handle the contacts
*
* @author intel
*
*/
public class MySimpleArrayAdapter extends CursorAdapter
{
private LayoutInflater mInflater;
private Cursor cur;
public MySimpleArrayAdapter(Context context, Cursor c)
{
super(context, c);
this.mInflater = LayoutInflater.from(context);
this.cur = c;
}
public MySimpleArrayAdapter(Context context, Cursor c, boolean a)
{
super(context, c, a);
this.mInflater = LayoutInflater.from(context);
this.cur = c;
}
@Override
public void bindView(View view, Context context, Cursor cursor)
{
TextView tvName = null;
tvName = (TextView) view.findViewById(R.id.contact_item_text_view_name);
tvName.setText(cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME)));
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent)
{
TextView tvName = null;
ImageView ivPhoto;
mInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View convertView = mInflater.inflate(R.layout.contact_item, parent, false);
tvName = (TextView) convertView.findViewById(R.id.contact_item_text_view_name);
tvName.setText(cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME)));
return convertView;
}
@Override
public int getCount()
{
Thread.dumpStack();
return cur.getCount();
}
}
这是日志:
01-20 09:54:48.407: E/AndroidRuntime(8459): FATAL EXCEPTION: main 01-20 09:54:48.407: E/AndroidRuntime(8459): java.lang.IllegalStateException: 这应该只在光标时调用有效 01-20 09:54:48.407: E/AndroidRuntime(8459): at android.widget.CursorAdapter.getView(CursorAdapter.java:175) 01-20 09:54:48.407: E/AndroidRuntime(8459): at android.widget.AbsListView.obtainView(AbsListView.java:1409) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 android.widget.ListView.measureHeightOfChildren(ListView.java:1307) 01-20 09: 54:48.407: E/AndroidRuntime(8459): 在 android.widget.ListView.onMeasure(ListView.java:1127) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 android.view.View.measure (View.java:8510) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 android.widget.RelativeLayout.measureChild(RelativeLayout.java:566) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 android.widget.RelativeLayout.onMeasure(RelativeLayout.java:381) 01-20 09:54:48.407: E/AndroidRuntime(8459) : 在 android.view.View.measure(View.java:8510) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:581) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 android.widget.RelativeLayout.onMeasure(RelativeLayout.java:365) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 android.view.View .measure(View.java:8510) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3202) 01-20 09:54:48.407: E /AndroidRuntime(8459): 在 android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 01-20 09:54:48.407: E/AndroidRuntime(8459):在 android.view.View.measure(View.java:8510) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3202) 01-20 09 :54:48.407: E/AndroidRuntime(8459): 在 android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 android.view.View。测量(View.java:8510)01-20 09:54:48.407:E/AndroidRuntime(8459):在 android.view.ViewRoot.performTraversals(ViewRoot.java:871)01-20 09:54:48.407:E/ AndroidRuntime(8459): 在 android.view.ViewRoot.handleMessage(ViewRoot.java:1921) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 android.os.Handler.dispatchMessage(Handler.java:99 ) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 android.os.Looper.loop(Looper.java:143) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 android .app.ActivityThread.main(ActivityThread.java:4196) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 java.lang.reflect.Method.invokeNative(Native Method) 01-20 09:54:48.407 : E/AndroidRuntime(8459): at java.lang.reflect.Method.invoke(Method.java:507) 01-20 09:54:48.407: E/AndroidRuntime(8459): at com.android.internal.os。 ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 01-20 09:54:48.407: E/AndroidRuntime(8459): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 dalvik.system.NativeStart.main(Native Method)507) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 01-20 09:54:48.407: E/ AndroidRuntime(8459): 在 com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 dalvik.system.NativeStart.main(Native方法)507) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 01-20 09:54:48.407: E/ AndroidRuntime(8459): 在 com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 01-20 09:54:48.407: E/AndroidRuntime(8459): 在 dalvik.system.NativeStart.main(Native方法)
请帮助我解决这个问题。