ListView 上方的 SQLite- 标题（来源与 ListView 来源相同）

Question

我正忙于一个圣经应用程序，我使用资产文件夹中的 SQLite 数据库检索数据，我使用 3 个列表视图，每个列表视图都有自己的 activity，它是这样的：

DB 列名称： 书名、书 ID、章节编号、章节 ID、节文本、节 ID

第 1 activity，用户 select 是一本书，创世记、出埃及记、利未记等...第 2 activity 开始

第 2 activity，数据库被过滤，因此用户可以 select 那本书下的章节...和第 3 activity 开始

3rd activity，db 被过滤并显示该章节下的所有经文...

我想要的是在第二个列表视图的顶部放置一个文本视图，然后在用户从第一个列表视图 select 编辑后，第二个 activity 开始显示所有章节，它应该显示从第一本 activity 开始 select 编辑的书名。在第三个列表视图中，它应该显示从前两个活动中 select 编辑的书名和章节编号，我尝试使用 intend，但出现错误。

适配器：

    public class customAdapterHoofstuk extends BaseAdapter {

        private Context mContext;
        private List<defineBybeldbAlles> defineBybeldbAlles;

        public customAdapterHoofstuk(Context mContext, List<defineBybeldbAlles> defineBybelDBList) {
            this.mContext = mContext;
            this.defineBybeldbAlles = defineBybelDBList;
        }

        @Override
        public int getCount() {
            return defineBybeldbAlles.size();
        }

        @Override
        public Object getItem(int position) {
            return defineBybeldbAlles.get(position);
        }

        @Override
        public long getItemId(int position) {
            return (defineBybeldbAlles.get(position).getHoofstuk_id());
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {

            View v = View.inflate(mContext, R.layout.custom_row_hoofstuk, null);

//this works->
            TextView hoofstuknommer = (TextView)v.findViewById(R.id.custom_row_hoofstuktext);
            hoofstuknommer.setText (defineBybeldbAlles.get(position).getHoofstuk_nommer());

//this works-->
            TextView hoofstukid = (TextView)v.findViewById(R.id.hoofstuk_id);
            hoofstukid.setText(String.valueOf(defineBybeldbAlles.get(position).getHoofstuk_id()));

//this doesnt work->
            TextView boeknaambyhoofstuk = (TextView)v.findViewById(R.id.boeknaambyhoofstuklys);
            boeknaambyhoofstuk.setText(defineBybeldbAlles.get(position).get_hebreeus());

            return v;
        }
        }

Activity 应显示的位置：

public class BybelActivityHoofstuk extends Activity {
    private ListView listviewHoofstuk;
    private customAdapterHoofstuk adapter_customAdapterHoofstuk;
    private List<defineBybeldbAlles> defineBybeldbAllesList;
    private DBHandlerHoofstuk DBHandlerHoofstuk;


    ArrayList<HashMap<String, String>> HoofstukList;

    //Boek id
    String boek_id_na_hoofstuk;

    @Override
    public void onCreate (Bundle savedInstanceState){
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_bybel_hoofstuk);
        listviewHoofstuk = (ListView) findViewById(R.id.BybelHoofstukListView);
        DBHandlerHoofstuk = new DBHandlerHoofstuk(this);

        //Check exists database
        File Database = getApplicationContext().getDatabasePath(DBHandlerHoofstuk.DBNAME);
        if(false == Database.exists()){
            DBHandlerHoofstuk.getReadableDatabase();}

            //Get boek id
            Intent boekIntent = getIntent();
            boek_id_na_hoofstuk = boekIntent.getStringExtra("boek_id");

            //hashmap for listview
            HoofstukList = new ArrayList<HashMap<String, String>>();

            //Get bybel list in db when db exists
            defineBybeldbAllesList = DBHandlerHoofstuk.getListHoofstuk(boek_id_na_hoofstuk);

            //Init adapter
            adapter_customAdapterHoofstuk = new customAdapterHoofstuk(this,defineBybeldbAllesList);

            //Set adapter for listview
            listviewHoofstuk.setAdapter(adapter_customAdapterHoofstuk);

            //Listview item click listener
            //BybelActivityVers will be launched by passing hoofstuk_id
            listviewHoofstuk.setOnItemClickListener(new AdapterView.OnItemClickListener(){

                @Override
                public void onItemClick (AdapterView<?> arg0, View view, int arg2, long arg3){

                    //on selecting a hoofstk
                    //BybelActivityVers will be launched to show verse inside
                    Intent hoofstukIntent = new Intent(BybelActivityHoofstuk.this,BybelActivityVers.class);

                    //send hoofstuk_id to VersActivity to get verse under that book
                    String hoofstuk_id_na_vers = ((TextView)view.findViewById(R.id.hoofstuk_id)).getText().toString();
                    hoofstukIntent.putExtra("hoofstuk_id", hoofstuk_id_na_vers);
                    startActivity(hoofstukIntent);
                }
            });
        }
    }

数据库处理程序：

public class DBHandlerHoofstuk extends SQLiteOpenHelper{
    public static final int DATABASE_VERSION = 1;
    public static final String DBNAME = "pwl14082016-5.db";
    public static final String DBLOCATION = "location goes here";

    private Context mContext;
    private SQLiteDatabase mDatabase;

    public static final String COLUMN_BOEK_ID = "boek_id";
    public static final String COLUMN_HEBREEUS = "_hebreeus";
    public static final String COLUMN_AFRIKAANS = "_afrikaans";
    public static final String COLUMN_HOOFSTUK_ID = "hoofstuk_id";
    public static final String COLUMN_HOOFSTUK_NOMMER = "hoofstuk_nommer";
    public static final String COLUMN_VERS_ID = "vers_id";
    public static final String COLUMN_VERS_NOMMER = "vers_nommer";
    public static final String COLUMN_VERS_TEXT = "vers_text";

    public DBHandlerHoofstuk(Context context) {
        super(context, DBNAME, null, DATABASE_VERSION);
        this.mContext = context;
    }

    //Blank want db bestaan klaar
    @Override
    public void onCreate(SQLiteDatabase db) {

    }

    //blank want db word ekstern geupgrade
    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

    }

    //maak db oop
    public void opendatabase(){
        String dbPath = mContext.getDatabasePath(DBNAME).getPath();
        if (mDatabase !=null && mDatabase.isOpen()) {
            return;
        }

        //verander dalk na 'mDatabase = SQLiteDatabase.openDatabase(dbPath, null, SQLiteDatabase.OPEN_READWRITE);' as OPEN_READONLY nie werk nie
        mDatabase = SQLiteDatabase.openDatabase(dbPath, null, SQLiteDatabase.OPEN_READWRITE);
    }

    //maak db toe
    public void closeDatabase(){
        if (mDatabase!=null) {
            mDatabase.close();
        }
    }

    public List<defineBybeldbAlles> getListHoofstuk(String boek_id_na_hoofstuk){
        defineBybeldbAlles defineBybeldbHoofstuk = null;
        List<defineBybeldbAlles> defineBybeldbAllesList = new ArrayList<>();
        opendatabase();
        Cursor cursor = mDatabase.rawQuery("SELECT * FROM PWLBybel WHERE " + COLUMN_BOEK_ID + " = '" + boek_id_na_hoofstuk + "'GROUP BY hoofstuk_id ORDER BY hoofstuk_id * 1 ASC", null);
        cursor.moveToFirst();
        while (!cursor.isAfterLast()){
            defineBybeldbHoofstuk = new defineBybeldbAlles(cursor.getInt(0), cursor.getString(1),cursor.getString(2),cursor.getInt(3),cursor.getString(4),cursor.getInt(5),cursor.getString(6),cursor.getString(7));
            defineBybeldbAllesList.add(defineBybeldbHoofstuk);
            cursor.moveToNext();
        }
        cursor.close();
        closeDatabase();
        return defineBybeldbAllesList;
}
}

XML 显示位置：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    tools:context=".defineBybeldbAlles">


    <ListView
        android:id="@+id/BybelHoofstukListView"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:divider="#ff303030"
        android:dividerHeight="1dp"
        android:layout_marginTop="21dp" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Boek naam:"
        android:id="@+id/boeknaambyhoofstuklys"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:textColor="#000063"
        android:textSize="20dp" />


</RelativeLayout>

Answer 1

您可以使用

通过 intent 发送字符串

String KEY  = "PUT_ANY_KEY_HERE";
String VALUE = "BOOK_NAME/CHAPTER_NAME";
Intent i = new Intent(FROM_CLASS.this, TO_CLASS.class);
i.putExtra(KEY,VALUE);
startActivity(i);

并使用

获取第二个activity中的字符串

Intent intent = getIntent();
if(intent!=null)
    String VALUE = intent.getExtras().getString(KEY);

现在在文本视图中设置 VALUE 字符串。此外，您还需要将 chapterName 文本视图放在列表视图上方，或者将 VALUE 字符串添加为数组列表中的第一个条目，您可能会使用它来填充第二和第三个 activity 中的列表视图。

Answer 2

如果有人遇到这个问题，我无法将书籍和章节名称传递到标题或栏中，但我设法设置了一个标题。

在每个 activity 下的清单中，只需输入 android:label="title here" 至少得到一个你想要的标题。

ListView 上方的 SQLite- 标题（来源与 ListView 来源相同）

SQLite- heading above ListView (source same as ListView source)

sqlite

android

listview

android-sqlite