自定义列表视图向其中添加数据后不会刷新

时间：2018-09-15 13:45:04

标签： java android

应用程序概述。

带标签的应用程序（3个标签：均为片段） 1）创建条目 2）检查记录 3）注意

1个标签：创建声音

包含一个具有3个选项的微调器，可以创建3种不同类型的声音。

纺纱包含

a）插入书籍（图书馆发行的书籍）
b）给朋友（如果这本书是给朋友的）
c）带给朋友（如果这本书被带给朋友）

在Spinner中选择一个选项会使同一活动中的条目布局变高。
a）-fragment_l_book_entry
b）-fragment_f_given_entry
c）-fragment_f_taken_entry

我在下面附上了本书条目布局的代码

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="10dp"
    android:background="@drawable/border"
    android:layout_marginTop="10dp"
    >

    <EditText
        android:layout_width="300dp"
        android:layout_height="wrap_content"
        android:hint="Enter Book Name"
        android:id="@+id/et1"
        android:textAlignment="center"
        android:textColor="#f16c1a"
        android:layout_centerHorizontal="true"
        />
    <EditText
        android:layout_width="300dp"
        android:layout_height="wrap_content"
        android:id="@+id/et2"
        android:hint="Enter Book No."
        android:textAlignment="center"
        android:layout_gravity="center"
        android:layout_below="@+id/et1"
        android:layout_centerHorizontal="true"
        />
    <TextView
        android:layout_width="300dp"
        android:layout_height="wrap_content"
        android:id="@+id/et3"
        android:textSize="18dp"
        android:inputType="date"
        android:hint="Select Issue Date"
        android:textAlignment="center"
        android:layout_gravity="center"
        android:layout_marginTop="10dp"
        android:layout_below="@+id/et2"
        android:layout_centerHorizontal="true"
        />

    <CheckBox
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Remind me to Return"
        android:layout_gravity="center"
        android:layout_marginTop="10dp"
        android:id="@+id/cb1"
        android:layout_below="@+id/et3"
        android:layout_centerHorizontal="true"
        />

    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/AlarmFL"
        android:layout_below="@+id/cb1"
        >

    </FrameLayout>

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Save"
        android:textColor="#f08401"
        android:id="@+id/saveentry"
        android:layout_below="@id/AlarmFL"
        android:layout_centerHorizontal="true"
        />

在第二个选项卡中，我具有相同的微调器和一个主要的“列表视图”，用于在其中设置自定义列表视图，以显示微调器选择的不同类型的项目。

输入图书 

package com.example.monu.libraryassistant;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.FrameLayout;
import android.widget.Spinner;

import com.example.monu.libraryassistant.VarRecordFrags.FGivenEntry;
import com.example.monu.libraryassistant.VarRecordFrags.FTakenEntry;
import com.example.monu.libraryassistant.VarRecordFrags.LBookEntry;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdView;
import com.google.android.gms.ads.MobileAds;


public class MakeEntry extends Fragment {
    private Spinner spinner1;
    private String entrytype[] = {"Book Entry","Given To Friend","Taken From Friend"};
    private ArrayAdapter<String> entrytypeadapter;
    private FrameLayout frameLayout;

    private Fragment otherfragments[] = {new LBookEntry(), new FGivenEntry(), new FTakenEntry()};

    private FragmentManager fragmentManager;
    private FragmentTransaction fragmentTransaction;

    private AdView mAdView;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_make_entry, container, false);

        MobileAds.initialize(getActivity(), "ca-app-pub-5567839560607947~5596808122");
        mAdView = view.findViewById(R.id.adView);
        AdRequest adRequest = new AdRequest.Builder().build();
        mAdView.loadAd(adRequest);


        spinner1 = (Spinner)view.findViewById(R.id.entrytypespinner);
        entrytypeadapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_spinner_dropdown_item, entrytype);
        spinner1.setAdapter(entrytypeadapter);
        frameLayout = (FrameLayout)view.findViewById(R.id.FM1);
        fragmentManager = getActivity().getSupportFragmentManager();

        spinner1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                switch (position){
                    case 0:
                        fragmentTransaction = fragmentManager.beginTransaction();
                        fragmentTransaction.replace(R.id.FM1,otherfragments[0]);
                        fragmentTransaction.commit();
                        break;
                    case 1:
                        fragmentTransaction = fragmentManager.beginTransaction();
                        fragmentTransaction.replace(R.id.FM1,otherfragments[1]);
                        fragmentTransaction.commit();
                        break;
                    case 2:
                        fragmentTransaction = fragmentManager.beginTransaction();
                        fragmentTransaction.replace(R.id.FM1,otherfragments[2]);
                        fragmentTransaction.commit();
                        break;
                }
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {

            }
        });
        return view;
    }
}

在主列表视图中设置自定义列表视图的“检查记录微调器活动” 

package com.example.monu.libraryassistant;

import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.Spinner;
import android.widget.TextView;

import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdView;
import com.google.android.gms.ads.MobileAds;

import java.util.ArrayList;


public class CheckRecords extends Fragment {
    /////////////FOR LIST VIEW/////////////////////
    private ListView listView;
    //////////////////////////////////////////////

    ///////////////////////////////////FOR Library Issued DATABASE LIST VIEW/////////////////////////////
    public static ArrayList<String> LBookTitleList = new ArrayList<String>();
    public static ArrayList<String> LBookNoList = new ArrayList<String>();
    public static ArrayList<String> LIssuedateList = new ArrayList<String>();
    public static ArrayList<String> LReminderList = new ArrayList<String>();
    public static ArrayList<String> LReminderStatusList = new ArrayList<String>();
    public static ArrayList<String> LEntryNo = new ArrayList<String>();
    ////////////////////////////////////////////////////////////////////////////////////////////////////

    ///////////////////////////////////FOR Given DATABASE LIST VIEW/////////////////////////////
    public static ArrayList<String> GBookTitleList = new ArrayList<String>();
    public static ArrayList<String> GBookNoList = new ArrayList<String>();
    public static ArrayList<String> GReminderList = new ArrayList<String>();
    public static ArrayList<String> GFriendNameList = new ArrayList<String>();
    public static ArrayList<String> GGivendateList = new ArrayList<String>();
    public static ArrayList<String> GReminderStatusList = new ArrayList<String>();
    public static ArrayList<String> GEntryNo = new ArrayList<String>();
    ////////////////////////////////////////////////////////////////////////////////////////////////////

    ///////////////////////////////////FOR Taken Issued DATABASE LIST VIEW/////////////////////////////
    public static ArrayList<String> TBookTitleList = new ArrayList<String>();
    public static ArrayList<String> TBookNoList = new ArrayList<String>();
    public static ArrayList<String> TReminderList = new ArrayList<String>();
    public static ArrayList<String> TFriendNameList = new ArrayList<String>();
    public static ArrayList<String> TTakendateList = new ArrayList<String>();
    public static ArrayList<String> TEntryNo = new ArrayList<String>();
    public static ArrayList<String> TReminderStatusList = new ArrayList<String>();
    ////////////////////////////////////////////////////////////////////////////////////////////////////

    private Database database;
    private SQLiteDatabase db;
    private String selectrecordtype[] = {"Select Here","Book Entry","Given To Friend","Taken From Friend"};
    private ArrayAdapter<String> selectrecordtypeadapter;

    private Spinner recordtypespinner;

    private AdView mAdView;

    @Override
    public View onCreateView(LayoutInflater inflater, final ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_check_records, container, false);

        listView = (ListView)view.findViewById(R.id.listview1);

        MobileAds.initialize(getActivity(), "ca-app-pub-5567839560607947~5596808122");
        mAdView = view.findViewById(R.id.adView2);
        AdRequest adRequest = new AdRequest.Builder().build();
        mAdView.loadAd(adRequest);

        recordtypespinner = (Spinner)view.findViewById(R.id.recordtypespinner);
        selectrecordtypeadapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_spinner_dropdown_item, selectrecordtype);
        recordtypespinner.setAdapter(selectrecordtypeadapter);

        database = new Database(getActivity(), "bookrecords", null, 1);
        db = database.getWritableDatabase();

        recordtypespinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
                switch (i){
                    case 0:
                        break;
                    case 1:
                        getItemsFromDatabase();
                        MyBaseAdapter myBaseAdapter = new MyBaseAdapter();
                        listView.setAdapter(myBaseAdapter);
                        break;
                    case 2:
                        getItemsFromDatabase_Given();
                        GivenToFriend givenToFriend = new GivenToFriend();
                        listView.setAdapter(givenToFriend);
                        break;
                    case 3:
                        getItemsFromDatabase_Taken();
                        TakenFromFriend takenFromFriend = new TakenFromFriend();
                        listView.setAdapter(takenFromFriend);
                        break;
                }
            }

            @Override
            public void onNothingSelected(AdapterView<?> adapterView) {

            }
        });
        return view;
    }

    /////////////////////////////////////////////////////////////////////////////////////////////////////////////////
    //////////////////////////////////////Library ISSUED/////////////////////////////////////////////////////////////
    /////////////////////////////////////////////////////////////////////////////////////////////////////////////////

    public void getItemsFromDatabase() {
        LEntryNo.clear();
        LBookTitleList.clear();
        LBookNoList.clear();
        LIssuedateList.clear();
        LReminderList.clear();
        LReminderStatusList.clear();
        try{
            Cursor cursor = db.rawQuery("select * from librarybookrecords", null);

            while (cursor.moveToNext()) {

                Log.e("get", cursor.getString(1)+":"+cursor.getString(2)+":"+cursor.getString(3)+":"+cursor.getString(4));
                //Here i added data directly to lists in Custom Cart Class
                LEntryNo.add(cursor.getString(0));
                LBookTitleList.add(cursor.getString(1));
                LBookNoList.add(cursor.getString(2));
                LIssuedateList.add(cursor.getString(3));
                LReminderStatusList.add(cursor.getString(4));
                LReminderList.add(cursor.getString(5));
            }
            cursor.close();
        }catch (SQLException e){
            Log.e("DB Error", e.toString());
            e.printStackTrace();
        }
    }

    public class MyBaseAdapter extends BaseAdapter {
        @Override
        public int getCount() {
            return LBookTitleList.size();
        }

        @Override
        public Object getItem(int i) {
            return i;
        }

        @Override
        public long getItemId(int i) {
            return i;
        }

        @Override
        public View getView(final int i, View view, ViewGroup viewGroup) {
            if(view==null) {
                LayoutInflater layoutInflater = getLayoutInflater();
                view = layoutInflater.inflate(R.layout.customlistreocrds, null);
            }
            TextView textView1 = (TextView)view.findViewById(R.id.booknametitle);
            TextView textView2 = (TextView)view.findViewById(R.id.booknotitle);
            TextView textView3 = (TextView)view.findViewById(R.id.bookissuedatetitle);
            TextView textView4 = (TextView)view.findViewById(R.id.bookreminderdateandtime);
            ImageView imageView = (ImageView)view.findViewById(R.id.deleterecordbutton);
            ImageView imageView1 = view.findViewById(R.id.reminderindicator);
            textView1.setText("Book Name : "+LBookTitleList.get(i));
            textView2.setText("Book No : "+LBookNoList.get(i));
            textView3.setText("Issue Date : "+LIssuedateList.get(i));
            textView4.setText("Reminder Date : "+LReminderList.get(i));
            imageView.setImageResource(R.drawable.delete);
            if (LReminderStatusList.get(i).equals("true")){
                imageView1.setImageResource(R.drawable.alarm_on);
            }
            else {
                imageView1.setImageResource(R.drawable.alarm_off);
            }
            imageView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    String str = LEntryNo.get(i);
                    Integer inte = Integer.parseInt(str);
                    String deletequery = "delete from librarybookrecords where bkno = '"+str+"'";
                    db.execSQL(deletequery);
                    Log.e("deleted",deletequery+str);
                    getItemsFromDatabase();
                    notifyDataSetChanged();
                }
            });
            MyBaseAdapter myBaseAdapter = new MyBaseAdapter();
            myBaseAdapter.notifyDataSetChanged();
            return view;
        }
    }

我该怎么做：

当我在*输入条目*选项卡上选择*图书条目*并同时在*检查记录*选项卡上选择了我时，我在*主列表视图*中设置了图书记录，该记录显示了我在同一类别。

但是，当我在“创建条目”选项卡上添加记录并滚动到“检查记录”选项卡时，该记录已经显示了相同的类别记录，它不会更新我创建的最后一个条目。

0 个答案:

没有答案
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