Android 使用RecyclerView和TableLayout创建SQLite数据库

我需要用RecyclerView创建一个SQLite数据库，在这个数据库中我已经尝试搜索了所有的样本，但到目前为止没有一个适合我的需要。其中大多数都无法理解，因为我无法理解它们的结构，例如它们的文件夹、java类等。我自己已经尝试了很多天，但找不到有价值的解决方案。我将直截了当地说，我需要了解如何将我的sqlite数据库读取到recyclerview，基本上只有字段术语才会显示。目前，数据的插入是硬编码的，因为我想看看我的数据库是否正常工作，而突然之间就不正常了

这是我的DatabaseHelper.java：

package com.zaid.recyclerviewsqlite.mynote_databases;

import java.util.ArrayList;
import java.util.List;

import com.zaid.recyclerviewsqlite.notes.DataModel;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

public class DatabaseHelper extends SQLiteOpenHelper {

    public static final String DBASE = "my_notes";
    public static final String TBLMYNOTES = "tblnotes";
    public static final int DBVERSION = 1;
    public static final String NOTE_TERM = "note_term";
    public static final String NOTE_ID = "note_id";
    public static final String NOTE_DEF = "note_def";
    public static final String NOTE_SYNTAX = "note_syntax";
    public static final String NOTE_CODE = "note_code";

    public int currentID;

    public DatabaseHelper(Context context) {
        super(context, DBASE, null, DBVERSION);
        // TODO Auto-generated constructor stub
        SQLiteDatabase db = this.getWritableDatabase();

    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        // TODO Auto-generated method stub
        db.execSQL("CREATE TABLE "+TBLMYNOTES+" ("+ NOTE_ID+" INTEGER PRIMARY KEY AUTOINCREMENT, "+NOTE_TERM+" TEXT, "+NOTE_DEF+" TEXT, "+NOTE_SYNTAX+" TEXT, "+NOTE_CODE+" TEXT )");
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int arg1, int arg2) {
        // TODO Auto-generated method stub
        db.execSQL("DROP TABLE IF EXISTS "+TBLMYNOTES);

        onCreate(db);
    }

    public long InsertNewRecord( String tblname, ArrayList<String> fields, ArrayList<String> values ) {
        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues db_values = new ContentValues();

        int countArr = values.size();

        for( int i = 0; i < countArr; i++  ) {

            db_values.put( fields.get(i), values.get(i) );

        }

        long status = db.insert(TBLMYNOTES, null, db_values);

        return status;
    }


    public Cursor getAllData(String tblname) {
        SQLiteDatabase db = this.getWritableDatabase();

        Cursor result = db.rawQuery("SELECT * FROM "+tblname, null);

        return result;
    }

    /**
     * @return
     */
    public List<DataModel> getAllDataModel(){

        List<DataModel> dataList = new ArrayList<DataModel>();
        String query = "SELECT * FROM" + TBLMYNOTES;

        SQLiteDatabase db = this.getWritableDatabase();
        Cursor c = db.rawQuery(query, null);

        while(c.moveToNext()){
            /**     DataModel model= new DataModel();
            model.setId(Integer.parseInt(c.getString(0)));
            model.setTerm(c.getString(1));
            model.setDefinition(c.getString(2));
            model.setSyntax(c.getString(3));
            model.setCode(c.getString(4));
    */  
            int index0 = c.getColumnIndex(NOTE_ID);
            int index1 = c.getColumnIndex(NOTE_TERM);
            int index2 = c.getColumnIndex(NOTE_DEF);
            int index3 = c.getColumnIndex(NOTE_SYNTAX);
            int index4 = c.getColumnIndex(NOTE_CODE);

            int id = c.getInt(index0);

            String term = c.getString(index1);
            String def = c.getString(index2);
            String syn = c.getString(index3);
            String code = c.getString(index4);
            DataModel model = new DataModel(id, term, def, syn, code);
            dataList.add(model);

        }

        return dataList;
    }

    public int DeleteRecord(String tblname, String strField, String strValue) {
        SQLiteDatabase db = this.getWritableDatabase();

        int status = db.delete(TBLMYNOTES , " "+strField+" = ? ", new String[] { strValue });

        return status;
    }

    public int UpdateRecord(String tblname, ArrayList<String> Fields, ArrayList<String> Values) {
        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues db_values = new ContentValues();

        int countMaxArr = Fields.size();

        String strFieldID = Fields.get(0);
        String strFieldValue = Values.get(0);


        for( int i = 0; i < countMaxArr; i++ ) {

            db_values.put(Fields.get(i), Values.get(i));

        }

        int status = db.update(TBLMYNOTES, db_values, strFieldID+" = ? ", new String[] { strFieldValue });

        return status;
    }

    public void setcurrID(int ID) {     
        currentID = ID;
    }       

    public int getcurrID() {
        return currentID;
    }


    public Cursor getRecordByID(String tblname, String Fieldname, String Fieldvalue) {
        SQLiteDatabase db = this.getWritableDatabase();

        Cursor result = db.rawQuery("SELECT * FROM "+TBLMYNOTES+" WHERE "+Fieldname+" = "+Fieldvalue, null);

        return result;

    }


}

这是我的CustomAdapter.java

package com.zaid.recyclerviewsqlite.notes;

import java.util.ArrayList;
import java.util.List;

import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.zaid.recyclerviewsqlite.R;

public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.MyViewHolder> {

    private ArrayList<DataModel> dataSet;
    private List<DataModel> items;

    public CustomAdapter(List<DataModel> items){
        this.items = items;
    }

    public static class MyViewHolder extends RecyclerView.ViewHolder {

        TextView textViewTerm;

        public MyViewHolder(View itemView) {
            super(itemView);
            this.textViewTerm = (TextView) itemView.findViewById(R.id.textViewTerm);
        }
    }

    public CustomAdapter(ArrayList<DataModel> data) {
        this.dataSet = data;
    }

    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent,
                                           int viewType) {
        View view = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.my_notes_card_view, parent, false);

        //view.setOnClickListener(My_Notes.myOnClickListener);

        MyViewHolder myViewHolder = new MyViewHolder(view);
        return myViewHolder;
    }

    @Override
    public void onBindViewHolder(final MyViewHolder holder, final int listPosition) {

        holder.textViewTerm.setText(dataSet.get(listPosition).getTerm());
    }

    @Override
    public int getItemCount() {
        return dataSet.size();
    }
}

package com.zaid.recyclerviewsqlite.addNotes;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;

public class My_Notes_Add_MyPagerAdapter extends FragmentStatePagerAdapter {
    int numOfTabs;

    public My_Notes_Add_MyPagerAdapter(FragmentManager fm, int numOfTabs) {
        super(fm);
        this.numOfTabs = numOfTabs;
    }

    @Override
    public Fragment getItem(int position) {

       return My_Notes_Add_TabFragment.getInstance(position);
    }

    @Override
    public int getCount() {
        return numOfTabs;
    }
}

My Manifest.xml

    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.zaid.recyclerviewsqlite"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="14"
        android:targetSdkVersion="21" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/MyMaterialTheme" >
        <activity
            android:name="com.zaid.recyclerviewsqlite.index.Index_Activity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.zaid.recyclerviewsqlite.notes.My_Notes"
            >            
        </activity>
        <activity
            android:name="com.zaid.recyclerviewsqlite.addNotes.My_Notes_Add_Main"
            >            
        </activity>
    </application>

</manifest>

My_Notes_Add_Tab_Fragment.java

package com.zaid.recyclerviewsqlite.addNotes;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;

import com.zaid.recyclerviewsqlite.R;

public class My_Notes_Add_TabFragment extends Fragment {

    private int position;
    private TextView content;
    private ImageView image;

    public static Fragment getInstance(int position) {
        My_Notes_Add_TabFragment f = new My_Notes_Add_TabFragment();
        Bundle args = new Bundle();
        args.putInt("position", position);
        f.setArguments(args);
        return f;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //get data from Argument
        position = getArguments().getInt("position");
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.my_notes_add_tab_fragment, container, false);
    }

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);


        content = (EditText) view.findViewById(R.id.textView);

    }


}

添加了Logcat：

03-14 00:33:11.446: E/SQLiteLog(16725): (1) near "FROMtblnotes": syntax error
03-14 00:33:11.446: D/AndroidRuntime(16725): Shutting down VM
03-14 00:33:11.446: W/dalvikvm(16725): threadid=1: thread exiting with uncaught exception (group=0x55d91b20)
03-14 00:33:11.446: D/AndroidRuntime(16725): procName from cmdline: com.zaid.recyclerviewsqlite
03-14 00:33:11.446: E/AndroidRuntime(16725): in writeCrashedAppName, pkgName :com.zaid.recyclerviewsqlite
03-14 00:33:11.446: D/AndroidRuntime(16725): file written successfully with content: com.zaid.recyclerviewsqlite StringBuffer : ;com.zaid.recyclerviewsqlite
03-14 00:33:11.456: I/Process(16725): Sending signal. PID: 16725 SIG: 9
03-14 00:33:11.456: E/AndroidRuntime(16725): FATAL EXCEPTION: main
03-14 00:33:11.456: E/AndroidRuntime(16725): Process: com.zaid.recyclerviewsqlite, PID: 16725
03-14 00:33:11.456: E/AndroidRuntime(16725): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.zaid.recyclerviewsqlite/com.zaid.recyclerviewsqlite.notes.My_Notes}: android.database.sqlite.SQLiteException: near "FROMtblnotes": syntax error (code 1): , while compiling: SELECT * FROMtblnotes
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.app.ActivityThread.access$800(ActivityThread.java:135)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.os.Handler.dispatchMessage(Handler.java:102)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.os.Looper.loop(Looper.java:136)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.app.ActivityThread.main(ActivityThread.java:5021)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at java.lang.reflect.Method.invokeNative(Native Method)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at java.lang.reflect.Method.invoke(Method.java:515)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:827)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:643)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at dalvik.system.NativeStart.main(Native Method)
03-14 00:33:11.456: E/AndroidRuntime(16725): Caused by: android.database.sqlite.SQLiteException: near "FROMtblnotes": syntax error (code 1): , while compiling: SELECT * FROMtblnotes
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:44)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1314)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1253)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at com.zaid.recyclerviewsqlite.mynote_databases.DatabaseHelper.getAllDataModel(DatabaseHelper.java:84)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at com.zaid.recyclerviewsqlite.notes.My_Notes.onCreate(My_Notes.java:64)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.app.Activity.performCreate(Activity.java:5231)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1090)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
03-14 00:33:11.456: E/AndroidRuntime(16725):    ... 11 more
03-14 00:33:11.606: W/dalvikvm(16740): VFY: unable to find class referenced in signature (Landroid/view/SearchEvent;)
03-14 00:33:11.606: I/dalvikvm(16740): Could not find method android.view.Window$Callback.onSearchRequested, referenced from method android.support.v7.view.WindowCallbackWrapper.onSearchRequested
03-14 00:33:11.606: W/dalvikvm(16740): VFY: unable to resolve interface method 18104: Landroid/view/Window$Callback;.onSearchRequested (Landroid/view/SearchEvent;)Z
03-14 00:33:11.606: D/dalvikvm(16740): VFY: replacing opcode 0x72 at 0x0002
03-14 00:33:11.606: I/dalvikvm(16740): Could not find method android.view.Window$Callback.onWindowStartingActionMode, referenced from method android.support.v7.view.WindowCallbackWrapper.onWindowStartingActionMode
03-14 00:33:11.606: W/dalvikvm(16740): VFY: unable to resolve interface method 18108: Landroid/view/Window$Callback;.onWindowStartingActionMode (Landroid/view/ActionMode$Callback;I)Landroid/view/ActionMode;
03-14 00:33:11.606: D/dalvikvm(16740): VFY: replacing opcode 0x72 at 0x0002
03-14 00:33:11.636: I/dalvikvm(16740): Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.widget.TintTypedArray.getChangingConfigurations
03-14 00:33:11.636: W/dalvikvm(16740): VFY: unable to resolve virtual method 424: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
03-14 00:33:11.636: D/dalvikvm(16740): VFY: replacing opcode 0x6e at 0x0002
03-14 00:33:11.636: I/dalvikvm(16740): Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.widget.TintTypedArray.getType
03-14 00:33:11.636: W/dalvikvm(16740): VFY: unable to resolve virtual method 446: Landroid/content/res/TypedArray;.getType (I)I
03-14 00:33:11.636: D/dalvikvm(16740): VFY: replacing opcode 0x6e at 0x0002

03-14 00:33:11.446:E/SQLiteLog（16725）：（1）靠近“FROMtblnotes”：语法错误
03-14 00:33:11.446:D/AndroidRuntime（16725）：关闭虚拟机
03-14 00:33:11.446:W/dalvikvm（16725）：threadid=1:线程退出时出现未捕获异常（组=0x55d91b20）
03-14 00:33:11.446:D/AndroidRuntime（16725）：来自cmdline的procName:com.zaid.RecycleServiceWSQlite
03-14 00:33:11.446:E/AndroidRuntime（16725）：以书面形式命名的应用程序名，pkgName:com.zaid.recyclerviewsqlite
03-14 00:33:11.446:D/AndroidRuntime（16725）：文件已成功写入，内容为：com.zaid.recyclerivewsqlite StringBuffer:；com.zaid.recyclerviewsqlite
03-14 00:33:11.456:I/进程（16725）：发送信号。PID:16725信号：9
03-14 00:33:11.456:E/AndroidRuntime（16725）：致命异常：主
03-14 00:33:11.456:E/AndroidRuntime（16725）：进程：com.zaid.recyclerivewsqlite，PID:16725
03-14 00:33:11.456:E/AndroidRuntime（16725）：java.lang.RuntimeException:无法启动活动组件信息{com.zaid.recyclerviewsqlite/com.zaid.recyclerviewsqlite.notes.My_notes}:android.database.sqlite.SQLiteException:在“FROMtblnotes”附近：编译时语法错误（代码1）：，选择*FROMtblnotes
03-14 00:33:11.456:E/AndroidRuntime（16725）：在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2195）上
03-14 00:33:11.456:E/AndroidRuntime（16725）：在android.app.ActivityThread.handleLaunchActivity（ActivityThread.java:2245）
03-14 00:33:11.456:E/AndroidRuntime（16725）：在android.app.ActivityThread.access$800（ActivityThread.java:135）
03-14 00:33:11.456:E/AndroidRuntime（16725）：在android.app.ActivityThread$H.handleMessage（ActivityThread.java:1196）
03-14 00:33:11.456:E/AndroidRuntime（16725）：在android.os.Handler.dispatchMessage（Handler.java:102）上
03-14 00:33:11.456:E/AndroidRuntime（16725）：在android.os.Looper.loop（Looper.java:136）上
03-14 00:33:11.456:E/AndroidRuntime（16725）：位于android.app.ActivityThread.main（ActivityThread.java:5021）
03-14 00:33:11.456:E/AndroidRuntime（16725）：位于java.lang.reflect.Method.Invokenactive（本机方法）
03-14 00:33:11.456:E/AndroidRuntime（16725）：位于java.lang.reflect.Method.invoke（Method.java:515）
03-14 00:33:11.456:E/AndroidRuntime（16725）：在com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run（ZygoteInit.java:827）
03-14 00:33:11.456:E/AndroidRuntime（16725）：位于com.android.internal.os.ZygoteInit.main（ZygoteInit.java:643）
03-14 00:33:11.456:E/AndroidRuntime（16725）：在dalvik.system.NativeStart.main（本机方法）
03-14 00:33:11.456:E/AndroidRuntime（16725）：由以下原因引起：android.database.sqlite.SQLiteException:near“FROMtblnotes”：语法错误（代码1）：编译时：SELECT*FROMtblnotes
03-14 00:33:11.456:E/AndroidRuntime（16725）：在android.database.sqlite.SQLiteConnection.nativePrepareStatement（本机方法）
03-14 00:33:11.456:E/AndroidRuntime（16725）：在android.database.sqlite.SQLiteConnection.acquiredPreparedStatement（SQLiteConnection.java:889）
03-14 00:33:11.456:E/AndroidRuntime（16725）：在android.database.sqlite.SQLiteConnection.prepare（SQLiteConnection.java:500）
03-14 00:33:11.456:E/AndroidRuntime（16725）：在android.database.sqlite.SQLiteSession.prepare（SQLiteSession.java:588）
03-14 00:33:11.456:E/AndroidRuntime（16725）：在android.database.sqlite.SQLiteProgram.（SQLiteProgram.java:58）
03-14 00:33:11.456:E/AndroidRuntime（16725）：位于android.database.sqlite.SQLiteQuery.（SQLiteQuery.java:37）
03-14 00:33:11.456:E/AndroidRuntime（16725）：位于android.database.sqlite.SQLiteDirectCursorDriver.query（SQLiteDirectCursorDriver.java:44）
03-14 00:33:11.456:E/AndroidRuntime（16725）：在android.database.sqlite.SQLiteDatabase.rawQueryWithFactory（SQLiteDatabase.java:1314）
03-14 00:33:11.456:E/AndroidRuntime（16725）：在android.database.sqlite.SQLiteDatabase.rawQuery（SQLiteDatabase.java:1253）
03-14 00:33:11.456:E/AndroidRuntime（16725）：在com.zaid.recyclerivewsqlite.mynote_databases.DatabaseHelper.getAllDataModel（DatabaseHelper.java:84）
03-14 00:33:11.456:E/AndroidRuntime（16725）：在com.zaid.recyclerivewsqlite.notes.My_notes.onCreate（My_notes.java:64）
03-14 00:33:11.456:E/AndroidRuntime（16725）：在android.app.Activity.performCreate（Activity.java:5231）上
03-14 00:33:11.456:E/AndroidRuntime（16725）：在android.app.Instrumentation.callActivityOnCreate（Instrumentation.java:1090）上
03-14 00:33:11.456:E/AndroidRuntime（16725）：在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2159）上
03-14 00:33:11.456:E/AndroidRuntime（16725）：。。。还有11个
03-14 00:33:11.606:W/dalvikvm（16740）：VFY:找不到签名中引用的类（Landroid/view/SearchEvent；）
03-14 00:33:11.606:I/dalvikvm（16740）：找不到方法android.view.Window$Callback.onSearchRequested，从方法android.support.v7.view.WindowCallbackWrapper.onSearchRequested引用
03-14 00:33:11.606:W/dalvikvm（16740）：VFY:无法解析接口方法18104:Landroid/view/Window$Callback；。onSearchRequested（Landroid/view/SearchEvent；）Z
03-14 00:33:11.606:D/dalvikvm（16740）：VFY：在0x0002处替换操作码0x72
03-14 00:33:11.606:I/dalvikvm（16740）：找不到方法android.view。
package com.zaid.recyclerviewsqlite.addNotes;

import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.Toast;

import com.zaid.recyclerviewsqlite.R;

public class My_Notes_Add_Main extends AppCompatActivity implements View.OnClickListener {

    private final int numOfPages = 4; //viewpager has 4 pages
    private final String[] pageTitle = {"Terms", "Definition", "Syntax", "Code"};
    private ImageButton addNew;
    private EditText terms, def, syn, code;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.my_notes_add_main);

        addNew = (ImageButton)findViewById(R.id.addNew);
        addNewTerms();

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar1);
        setSupportActionBar(toolbar);

        TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);

        for (int i = 0; i < numOfPages; i++) {
            tabLayout.addTab(tabLayout.newTab().setText(pageTitle[i]));
        }

        //set gravity for tab bar
        tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);

        final ViewPager viewPager = (ViewPager) findViewById(R.id.pager);
        final PagerAdapter adapter = new My_Notes_Add_MyPagerAdapter(getSupportFragmentManager(), numOfPages);

        viewPager.setAdapter(adapter);
        viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
        tabLayout.setOnTabSelectedListener(onTabSelectedListener(viewPager));
    }

    private TabLayout.OnTabSelectedListener onTabSelectedListener(final ViewPager pager) {
        return new TabLayout.OnTabSelectedListener() {
            @Override
            public void onTabSelected(TabLayout.Tab tab) {
                pager.setCurrentItem(tab.getPosition());
            }

            @Override
            public void onTabUnselected(TabLayout.Tab tab) {

            }

            @Override
            public void onTabReselected(TabLayout.Tab tab) {

            }
        };
    }

  /**  @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.my_notes_add_main_menu, menu);        
        return true;
    } */

    public void addNewTerms(){
        addNew.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                Toast.makeText(getApplicationContext(), "Add Click", Toast.LENGTH_SHORT).show();
            }

    });
    }

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub

    }






}

package com.zaid.recyclerviewsqlite.addNotes;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;

public class My_Notes_Add_MyPagerAdapter extends FragmentStatePagerAdapter {
    int numOfTabs;

    public My_Notes_Add_MyPagerAdapter(FragmentManager fm, int numOfTabs) {
        super(fm);
        this.numOfTabs = numOfTabs;
    }

    @Override
    public Fragment getItem(int position) {

       return My_Notes_Add_TabFragment.getInstance(position);
    }

    @Override
    public int getCount() {
        return numOfTabs;
    }
}

package com.zaid.recyclerviewsqlite.addNotes;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;

import com.zaid.recyclerviewsqlite.R;

public class My_Notes_Add_TabFragment extends Fragment {

    private int position;
    private TextView content;
    private ImageView image;

    public static Fragment getInstance(int position) {
        My_Notes_Add_TabFragment f = new My_Notes_Add_TabFragment();
        Bundle args = new Bundle();
        args.putInt("position", position);
        f.setArguments(args);
        return f;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //get data from Argument
        position = getArguments().getInt("position");
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.my_notes_add_tab_fragment, container, false);
    }

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);


        content = (EditText) view.findViewById(R.id.textView);

    }


}

03-14 00:33:11.446: E/SQLiteLog(16725): (1) near "FROMtblnotes": syntax error
03-14 00:33:11.446: D/AndroidRuntime(16725): Shutting down VM
03-14 00:33:11.446: W/dalvikvm(16725): threadid=1: thread exiting with uncaught exception (group=0x55d91b20)
03-14 00:33:11.446: D/AndroidRuntime(16725): procName from cmdline: com.zaid.recyclerviewsqlite
03-14 00:33:11.446: E/AndroidRuntime(16725): in writeCrashedAppName, pkgName :com.zaid.recyclerviewsqlite
03-14 00:33:11.446: D/AndroidRuntime(16725): file written successfully with content: com.zaid.recyclerviewsqlite StringBuffer : ;com.zaid.recyclerviewsqlite
03-14 00:33:11.456: I/Process(16725): Sending signal. PID: 16725 SIG: 9
03-14 00:33:11.456: E/AndroidRuntime(16725): FATAL EXCEPTION: main
03-14 00:33:11.456: E/AndroidRuntime(16725): Process: com.zaid.recyclerviewsqlite, PID: 16725
03-14 00:33:11.456: E/AndroidRuntime(16725): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.zaid.recyclerviewsqlite/com.zaid.recyclerviewsqlite.notes.My_Notes}: android.database.sqlite.SQLiteException: near "FROMtblnotes": syntax error (code 1): , while compiling: SELECT * FROMtblnotes
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.app.ActivityThread.access$800(ActivityThread.java:135)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.os.Handler.dispatchMessage(Handler.java:102)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.os.Looper.loop(Looper.java:136)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.app.ActivityThread.main(ActivityThread.java:5021)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at java.lang.reflect.Method.invokeNative(Native Method)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at java.lang.reflect.Method.invoke(Method.java:515)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:827)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:643)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at dalvik.system.NativeStart.main(Native Method)
03-14 00:33:11.456: E/AndroidRuntime(16725): Caused by: android.database.sqlite.SQLiteException: near "FROMtblnotes": syntax error (code 1): , while compiling: SELECT * FROMtblnotes
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:44)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1314)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1253)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at com.zaid.recyclerviewsqlite.mynote_databases.DatabaseHelper.getAllDataModel(DatabaseHelper.java:84)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at com.zaid.recyclerviewsqlite.notes.My_Notes.onCreate(My_Notes.java:64)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.app.Activity.performCreate(Activity.java:5231)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1090)
03-14 00:33:11.456: E/AndroidRuntime(16725):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
03-14 00:33:11.456: E/AndroidRuntime(16725):    ... 11 more
03-14 00:33:11.606: W/dalvikvm(16740): VFY: unable to find class referenced in signature (Landroid/view/SearchEvent;)
03-14 00:33:11.606: I/dalvikvm(16740): Could not find method android.view.Window$Callback.onSearchRequested, referenced from method android.support.v7.view.WindowCallbackWrapper.onSearchRequested
03-14 00:33:11.606: W/dalvikvm(16740): VFY: unable to resolve interface method 18104: Landroid/view/Window$Callback;.onSearchRequested (Landroid/view/SearchEvent;)Z
03-14 00:33:11.606: D/dalvikvm(16740): VFY: replacing opcode 0x72 at 0x0002
03-14 00:33:11.606: I/dalvikvm(16740): Could not find method android.view.Window$Callback.onWindowStartingActionMode, referenced from method android.support.v7.view.WindowCallbackWrapper.onWindowStartingActionMode
03-14 00:33:11.606: W/dalvikvm(16740): VFY: unable to resolve interface method 18108: Landroid/view/Window$Callback;.onWindowStartingActionMode (Landroid/view/ActionMode$Callback;I)Landroid/view/ActionMode;
03-14 00:33:11.606: D/dalvikvm(16740): VFY: replacing opcode 0x72 at 0x0002
03-14 00:33:11.636: I/dalvikvm(16740): Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.widget.TintTypedArray.getChangingConfigurations
03-14 00:33:11.636: W/dalvikvm(16740): VFY: unable to resolve virtual method 424: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
03-14 00:33:11.636: D/dalvikvm(16740): VFY: replacing opcode 0x6e at 0x0002
03-14 00:33:11.636: I/dalvikvm(16740): Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.widget.TintTypedArray.getType
03-14 00:33:11.636: W/dalvikvm(16740): VFY: unable to resolve virtual method 446: Landroid/content/res/TypedArray;.getType (I)I
03-14 00:33:11.636: D/dalvikvm(16740): VFY: replacing opcode 0x6e at 0x0002