listview 예제를 제 파일에다 넣는데 계속 에러가 생깁니다.
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09-21 16:08:43.929 6310-6310/com.example.lee.firsttest E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.lee.firsttest, PID: 6310
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.lee.firsttest/com.example.lee.firsttest.activity.TestDataBaseActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2212)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2271)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1205)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5146)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:732)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:566)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.example.lee.firsttest.activity.TestDataBaseActivity.onCreate(TestDataBaseActivity.java:60)
at android.app.Activity.performCreate(Activity.java:5231)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2169)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2271)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1205)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5146)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:732)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:566)
at dalvik.system.NativeStart.main(Native Method)
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"http://blog.daum.net/haha25/5387581" 이 코드를 사용하고 있습니다
package com.example.lee.firsttest;
import android.database.Cursor;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;
import com.example.lee.firsttest.adapter.CustomAdapter;
import com.example.lee.firsttest.conf.Constants;
import com.example.lee.firsttest.data.InfoClass;
import com.example.lee.firsttest.database.DbOpenHelper;
import com.example.lee.firsttest.util.DLog;
import java.util.ArrayList;
public class memo extends AppCompatActivity {
private static final String TAG = "memo";
private DbOpenHelper mDbOpenHelper;
private Cursor mCursor;
private InfoClass mInfoClass;
private ArrayList<InfoClass> mInfoArray;
private CustomAdapter mAdapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_speechtotext);
setLayout();
................................
com.example.lee.firsttest/com.example.lee.firsttest.activity.TestDataBaseActivity
이게 문제인것 같은데 com.example.lee.firsttest가 두번 있는게 문제인것 같은데 아무리 찾아봐도 잘 모르곘습니다.
mainactivity에서 버튼 누르면 intent로 불러오려고 합니다
