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안녕하세요 데이터베이스의 콘텐츠를 표시하려는 내 활동에서 목록보기를 만들었습니다. 하지만 목록보기가 없다는 오류가 발생했습니다. 누구든지 오류를 극복하기 위해 더 나은 해결책을 제공 할 수 있습니까?데이터베이스의 목록 뷰가 작동하지 않습니다.
내 로그 캣은 목록보기를 표시하기 위해 여기 public class Friends_list extends ListActivity implements
OnItemClickListener{
private ArrayList<String> results = new ArrayList<String>();
private String tableName = LoginDataBaseAdapter.tableName;
private SQLiteDatabase newDB;
ListView listview;
Context context;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_friends);
//listview=(ListView)findViewById(R.id.list);
openAndQueryDatabase();
displayResultList();
context=this;
//String[] arrayColumns=new String[]{"Name,Username"};
//int[]arrayViewIDs=new int[]
{R.id.textViewSMSSender,R.id.textViewMessageBody};
//Cursor cursor;
//cursor.getContentResolver().query(Uri.parse("content://sms/inbox"),
null,null,null,null);
//@SuppressWarnings("deprecation")
//SimpleCursorAdapter adapter=new
SimpleCursorAdapter(this,R.layout.friendsms, cursor, arrayColumns,
arrayViewIDs);
//ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
// android.R.layout.simple_list_item_activated_1, android.R.id.text1,
value);
//listview.setAdapter(adapter);
//listview.setOnItemClickListener(this);
}
private void setListAdapter(ArrayAdapter<String> arrayAdapter) {
// TODO Auto-generated method stub
}
private void openAndQueryDatabase() {
try {
LoginDataBaseAdapter loginDataBaseAdapter=new
LoginDataBaseAdapter(this.getApplicationContext());
newDB=loginDataBaseAdapter.getWritableDatabase();
Cursor c=newDB.rawQuery(" SELECT NAME ,
USERNAME FROM "+ tableName, null);
if (c != null) {
if (c.moveToFirst()) {
do {
String Name=c.getString(c.getColumnIndex("NAME"));
String Username=c.getString(c.getColumnIndex("USERNAME"));
}
while(c.moveToNext());
}
}
}
catch (SQLiteException se) {
Log.e(getClass().getSimpleName(), "Could not open the database");
}
finally {
if(newDB!=null)
newDB.execSQL(" DELETE FROM "+ tableName);
newDB.close();
}
}
private void displayResultList() {
TextView tView = new TextView(this);
tView.setText("Friends");
getListView().addHeaderView(tView);
setListAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, results));
getListView().setTextFilterEnabled(true);
}
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3)
{
Intent in2=new
Intent(Friends_list.this,InboxActivity.class);
startActivity(in2);
}
}
아래 내 XML 코드를 내 자바 클래스입니다 제공
08-23 07:04:28.025: E/AndroidRuntime(24675): FATAL EXCEPTION: main
08-23 07:04:28.025: E/AndroidRuntime(24675): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.neochat/com.neochat.Friends_list}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
08-23 07:04:28.025: E/AndroidRuntime(24675): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
08-23 07:04:28.025: E/AndroidRuntime(24675): at
android.app.ActivityThread.startActivityNow(ActivityThread.java:2023)
08-23 07:04:28.025: E/AndroidRuntime(24675): at
android.app.LocalActivityManager.moveToState(LocalActivityManager.java:135)
08-23 07:04:28.025: E/AndroidRuntime(24675): at
android.app.LocalActivityManager.startActivity(LocalActivityManager.java:347)
08-23 07:04:28.025: E/AndroidRuntime(24675): at
android.widget.TabHost$IntentContentStrategy.getContentView(TabHost.java:749
08-23 07:04:28.025: E/AndroidRuntime(24675): at
android.widget.TabHost.setCurrentTab(TabHost.java:413)
08-23 07:04:28.025: E/AndroidRuntime(24675): at
android.widget.TabHost$2.onTabSelectionChanged(TabHost.java:154)
08-23 07:04:28.025: E/AndroidRuntime(24675): at
android.widget.TabWidget$TabClickListener.onClick(TabWidget.java:546)
08-23 07:04:28.025: E/AndroidRuntime(24675): at
android.view.View.performClick(View.java:4204)
08-23 07:04:28.025: E/AndroidRuntime(24675): at
android.view.View$PerformClick.run(View.java:17355)
08-23 07:04:28.025: E/AndroidRuntime(24675): at
android.os.Handler.handleCallback(Handler.java:725)
08-23 07:04:28.025: E/AndroidRuntime(24675): at
android.os.Handler.dispatchMessage(Handler.java:92)
08-23 07:04:28.025: E/AndroidRuntime(24675): at
android.os.Looper.loop(Looper.java:137
08-23 07:04:28.025: E/AndroidRuntime(24675): at
android.app.ActivityThread.main(ActivityThread.java:5041)
08-23 07:04:28.025: E/AndroidRuntime(24675): at
java.lang.reflect.Method.invokeNative(Native Method)
08-23 07:04:28.025: E/AndroidRuntime(24675): at
java.lang.reflect.Method.invoke(Method.java:511)
08-23 07:04:28.025: E/AndroidRuntime(24675): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
08-23 07:04:28.025: E/AndroidRuntime(24675): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
08-23 07:04:28.025: E/AndroidRuntime(24675): at dalvik.system.NativeStart.main(Native Method)
08-23 07:04:28.025: E/AndroidRuntime(24675): Caused by: java.lang.RuntimeException: Your
content must have a ListView whose id attribute is 'android.R.id.list'
08-23 07:04:28.025: E/AndroidRuntime(24675): at
android.app.ListActivity.onContentChanged(ListActivity.java:243)
아래에 주어진
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<ListView
android:id="@+id/list"
style="@style/WhiteText"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingTop="10dp"
>
</ListView>
</LinearLayout>
에서 onCreate()에서 간단한
Activity을 확장'당신의 내용은 id 속성이 'android.R.id.list'인 ListView가 있어야합니다. – njzk2