我已经通过文本框将数据添加到listview ....
我想通过点击ListView来更新列表视图的行。 所有行数据都来自sqlite数据库，并在我的文本框中再次排列数据。
listview活动和Addactivity分开...... enter image description here
我需要你的帮助
SQLiteListAdapter.java：
package com.androidstudio.myinventory;
import android.app.ProgressDialog;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import java.util.ArrayList;
/**
* Created by HP on 9/15/2017.
*/
public class SQLiteListAdapter extends BaseAdapter {
Context context;
ArrayList<String> Item_ID;
ArrayList<String> ItemName;
ArrayList<String> Quantity;
ArrayList<String> Price;
ArrayList<String> Value;
// ArrayList<String> Detail ;
public SQLiteListAdapter(Context context, ArrayList<String> item_ID, ArrayList<String> itemName,
ArrayList<String> quantity, ArrayList<String> price, ArrayList<String> value) {
this.context = context;
this.Item_ID = item_ID;
this.ItemName = itemName;
this.Quantity = quantity;
this.Price = price;
this.Value = value;
//this.Detail = detail;
}
@Override
public int getCount() {
return Item_ID.size();
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View child, ViewGroup parent) {
Holder holder;
LayoutInflater layoutInflater;
//Check if this is the first time creating this row for the listview
if (child == null) {
//get the Android's layout inflater service which will read row_details.xml
layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
//Fill the row view with the xml layout file
child = layoutInflater.inflate(R.layout.edit_stock_row, null);
//Row was null, need to get components from the row_details.xml
holder = new Holder();
//Fill the holder with the text view components
holder.textviewid = (TextView) child.findViewById(R.id.tvsr);
holder.textviewname = (TextView) child.findViewById(R.id.tvname);
holder.textviewquantity = (TextView) child.findViewById(R.id.tvquantity);
holder.textviewprice = (TextView) child.findViewById(R.id.tvprice);
holder.textviewvalue = (TextView) child.findViewById(R.id.tvvalue);
//holder.textviewdetail = (TextView) child.findViewById(R.id.tvdetail);
//attach the holder to the row
child.setTag(holder);
} else {
//row was created before! thus get the holder object from the row tag
holder = (Holder) child.getTag();
}
//At this point we have our row, either created from new or got it from the row tag object
//we can now fill the data
//get our object from the list which is in the position of the listview
//position is passed to the getView method by the listview
holder.textviewid.setText(Item_ID.get(position));
holder.textviewname.setText(ItemName.get(position));
holder.textviewquantity.setText(Quantity.get(position));
holder.textviewprice.setText(Price.get(position));
holder.textviewvalue.setText(Value.get(position));
// holder.textviewdetail.setText(Detail.get(position));
//return to listview to show
return child;
}
//A holder will be responsible to hold the components to improve listview performance
//We replicate the components in the row_details.xml
public class Holder {
TextView textviewid;
TextView textviewname;
TextView textviewquantity;
TextView textviewprice;
TextView textviewvalue;
// TextView textviewdetail;
}
}
Edit_Stock.java：
package com.androidstudio.myinventory;
import android.content.ContentResolver;
import android.content.Intent;
import android.database.CharArrayBuffer;
import android.database.ContentObserver;
import android.database.Cursor;
import android.database.DataSetObserver;
import android.database.sqlite.SQLiteDatabase;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
public class Edit_Stock extends AppCompatActivity {
public static final String KEY1 = "key1";
StockDBHelper stockDBHelper;
SQLiteListAdapter ListAdapter;
ListView listView;
TextView textView;
String search;
SQLiteDatabase sqLiteDatabase;
Cursor cursor;
ArrayList<String> ID_ArrayList = new ArrayList<String>();
ArrayList<String> NAME_ArrayList = new ArrayList<String>();
ArrayList<String> QUANTITY_ArrayList = new ArrayList<String>();
ArrayList<String> PRICE_ArrayList = new ArrayList<String>();
ArrayList<String> VALUE_ArrayList = new ArrayList<>();
// ArrayList<String> DETAIL_ArrayList = new ArrayList<String>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_edit__stock);
textView = (TextView) findViewById(R.id.tvdetail);
stockDBHelper = new StockDBHelper(this);
listView = (ListView) findViewById(R.id.listviewedit);
}
@Override
protected void onResume() {
ShowSQLiteDBdata();
super.onResume();
}
private void ShowSQLiteDBdata() {
sqLiteDatabase = stockDBHelper.getWritableDatabase();
cursor = sqLiteDatabase.rawQuery("SELECT * FROM tbl_stock1", null);
ID_ArrayList.clear();
NAME_ArrayList.clear();
QUANTITY_ArrayList.clear();
PRICE_ArrayList.clear();
VALUE_ArrayList.clear();
//DETAIL_ArrayList.clear();
if (cursor.moveToFirst()) {
do {
ID_ArrayList.add(cursor.getString(cursor.getColumnIndex(stockDBHelper.COL_1)));
NAME_ArrayList.add(cursor.getString(cursor.getColumnIndex(stockDBHelper.COL_2)));
QUANTITY_ArrayList.add(cursor.getString(cursor.getColumnIndex(stockDBHelper.COL_10)));
PRICE_ArrayList.add(cursor.getString(cursor.getColumnIndex(stockDBHelper.COL_9)));
VALUE_ArrayList.add(cursor.getString(cursor.getColumnIndex(stockDBHelper.COL_5)));
// DETAIL_ArrayList.add(cursor.getString(cursor.getColumnIndex(stockDBHelper.COL_7)));
/* DETAIL_ArrayList.add(cursor.getColumnName(cursor.getColumnIndex(stockDBHelper.COL_7)));
DETAIL_ArrayList.iterator();
tvdetail.setText("Edit");*/
} while (cursor.moveToNext());
}
ListAdapter = new SQLiteListAdapter(Edit_Stock.this, ID_ArrayList,
NAME_ArrayList,
QUANTITY_ArrayList,
PRICE_ArrayList,
VALUE_ArrayList
// DETAIL_ArrayList
);
listView.setAdapter(ListAdapter);
cursor.close();
}
public void tveditClick(View view) {
String name = "";
Intent intent = new Intent(Edit_Stock.this, AddStock.class);
startActivity(intent);
Toast.makeText(this, "cliced", Toast.LENGTH_SHORT).show();
}
//Edit works....................
private void EditSQLiteDBdata() {
// search=textView.toString();
}
}
AddStock.java：
package com.androidstudio.myinventory;
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.app.FragmentManager;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.net.Uri;
import android.provider.MediaStore;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
import java.text.DateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.GregorianCalendar;
public class AddStock extends AppCompatActivity implements AdapterView.OnItemSelectedListener {
EditText etproductname, etitemname, etbrand, etdate, etcompany, etprice, etquantity, etnotilimit, etlocation, etphoto;
EditText etdetail;
Spinner spinner_category;
Button btnsave;
StockDBHelper stockDBHelper;
Context context;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add_stock);
stockDBHelper = new StockDBHelper(this);
etproductname = (EditText) findViewById(R.id.etproduct_name);
etitemname = (EditText) findViewById(R.id.etItem_name);
etbrand = (EditText) findViewById(R.id.etbrand);
etdate = (EditText) findViewById(R.id.etDate);
spinner_category = (Spinner) findViewById(R.id.Spinner_category);
etdetail = (EditText) findViewById(R.id.etdetail);
etcompany = (EditText) findViewById(R.id.etcompany);
etprice = (EditText) findViewById(R.id.etprice);
etquantity = (EditText) findViewById(R.id.etquantity);
etnotilimit = (EditText) findViewById(R.id.etnoti_limit);
etlocation = (EditText) findViewById(R.id.etlocation);
etphoto = (EditText) findViewById(R.id.etupdate_photo);
btnsave = (Button) findViewById(R.id.btnsave);
pupulateSpinner();
image = (ImageView) findViewById(R.id.imageView);
}
DatePickerDialog.OnDateSetListener mpickerDialog;
// etDate onClick event method
public void datePick(View view) {
etdate.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Calendar cal = Calendar.getInstance();
int year = cal.get(Calendar.YEAR);
int month = cal.get(Calendar.MONTH);
int day = cal.get(Calendar.DAY_OF_MONTH);
DatePickerDialog dialog = new DatePickerDialog(AddStock.this, android.R.style.Theme_Holo_Light_Dialog_MinWidth
, mpickerDialog, year, month, day);
dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
dialog.show();
}
});
mpickerDialog = new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker datePicker, int year, int month, int day) {
month = month + 1;
Log.d("TAG", "onDateSet :" + month + "/" + day + "/" + year);
String date = month + "/" + day + "/" + year;
etdate.setText(date);
}
};
}
// spinner populating method called in oncreate()
public void pupulateSpinner() {
spinner_category.setOnItemSelectedListener(this);
// String[] list = getResources().getStringArray(R.array.Categories);
/* ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this,R.layout.activity_add_stock,list);
spinner_category.setAdapter(arrayAdapter);
*/
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this,
R.array.Categories, android.R.layout.simple_spinner_item);
// Specify the layout to use when the list of choices appears
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// Apply the adapter to the spinner
spinner_category.setAdapter(adapter);
}
@Override
public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
}
@Override
public void onNothingSelected(AdapterView<?> adapterView) {
}
ImageView image;
Integer REQUEST_CAMERA = 1, SELECT_FILE = 0;
public void photoClick(View view) {
final CharSequence[] items = {"Take Photo", "Choose from Gallery",
"Cancel"};
AlertDialog.Builder builder = new AlertDialog.Builder(AddStock.this);
builder.setTitle("Add Photo!");
builder.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int item) {
if (items[item].equals("Take Photo")) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, REQUEST_CAMERA);
} else if (items[item].equals("Choose from Gallery")) {
Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
intent.setType("image/*");
startActivityForResult(Intent.createChooser(intent, "Select File"), SELECT_FILE);
} else if (items[item].equals("Cancel")) {
dialog.dismiss();
}
}
});
builder.show();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK) {
if (requestCode == REQUEST_CAMERA) {
// onCaptureImageResult(data);
Bundle bundle = data.getExtras();
final Bitmap bmp = (Bitmap) bundle.get("data");
image.setImageBitmap(bmp);
} else if (requestCode == SELECT_FILE) {
Uri selectphotoUri = data.getData();
image.setImageURI(selectphotoUri);
}
}
}
// save button onClick event
public void saveStock(View view) {
// Button button=new Button(context);
//button.setText("View");
//etdetail.setText(text);*/
etdetail.setText("View");
btnsave.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
boolean isInserted = stockDBHelper.insertData(etitemname.getText().toString(), etproductname.getText().toString(),
etbrand.getText().toString(), etdate.getText().toString(), spinner_category.getSelectedItem().toString(),
etcompany.getText().toString(), etprice.getText().toString(), etquantity.getText().toString(),
etnotilimit.getText().toString(), etlocation.getText().toString(), etphoto.getText().toString());
if (isInserted == true) {
Toast.makeText(AddStock.this, "Data inserted successfully", Toast.LENGTH_SHORT).show();
} else
Toast.makeText(AddStock.this, "Data was not inserted", Toast.LENGTH_SHORT).show();
}
});
}
}
StockDBHelper.java
package com.androidstudio.myinventory;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
/**
* Created by HP on 9/10/2017.
*/
public class StockDBHelper extends SQLiteOpenHelper {
public static final String DB_NAME = "stock1.db";
public static final String TABLE_NAME = "tbl_stock1";
public static final String COL_1 = "SERIAL";
public static final String COL_2 = "ITEM_NAME";
public static final String COL_3 = "PRODUCT_NAME";
public static final String COL_4 = "BRAND";
public static final String COL_5 = "DATE";
public static final String COL_6 = "CATEGORY";
// public static final String COL_7 = "DETAIL";
public static final String COL_8 = "COMPANY";
public static final String COL_9 = "PRICE";
public static final String COL_10 = "QUANTITY";
public static final String COL_11 = "NOTIFICATION_LIMIT";
public static final String COL_12 = "LOCATION";
public static final String COL_13 = "PHOTO";
public StockDBHelper(Context context) {
super(context,DB_NAME, null, 3);
}
@Override
public void onCreate(SQLiteDatabase sqLiteDatabase) {
sqLiteDatabase.execSQL("CREATE TABLE " + TABLE_NAME + "(SERIAL INTEGER PRIMARY KEY AUTOINCREMENT, " +
"ITEM_NAME TEXT,PRODUCT_NAME TEXT,BRAND TEXT, DATE INTEGER ,CATEGORY TEXT,COMPANY TEXT,PRICE INTEGER," +
"QUANTITY INTEGER,NOTIFICATION_LIMIT INTEGER,LOCATION TEXT,PHOTO TEXT)");
}
@Override
public void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) {
sqLiteDatabase.execSQL(" DROP TABLE IF EXISTS " + TABLE_NAME);
onCreate(sqLiteDatabase);
}
public boolean insertData(String item_name,String product_name , String brand , String date , String category, String company,
String price,String quantity, String noti_limit , String location,String photo)
{
SQLiteDatabase sqLiteDatabase = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put(COL_2,item_name);
contentValues.put(COL_3,product_name);
contentValues.put(COL_4,brand);
contentValues.put(COL_5,date);
contentValues.put(COL_6,category);
//contentValues.put(COL_7,detail);
contentValues.put(COL_8,company);
contentValues.put(COL_9,price);
contentValues.put(COL_10,quantity);
contentValues.put(COL_11,noti_limit);
contentValues.put(COL_12 ,location);
contentValues.put(COL_13,photo);
long result = sqLiteDatabase.insert(TABLE_NAME,null,contentValues);
if (result == -1)
return false;
else
return true;
}
public Cursor editdata(String id,SQLiteDatabase sqLiteDatabase){
Cursor cursor;
String \[\] projection = {COL_1,COL_2,COL_3,COL_4,COL_5,COL_6,COL_8,COL_9,COL_10,COL_11,COL_12,COL_13};
String selection= COL_1+ " LIKE ?";
String\[\] selection_arg={id};
cursor=sqLiteDatabase.query(TABLE_NAME,projection,selection,selection_arg,null,null,null);
return cursor;
}
// Show data in listview editing
/*public void ShowListData(String Id, String item_name , String quantity , String price , String value, String detail)
{
SQLiteDatabase sqLiteDatabase = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put(COL_1,Id);
contentValues.put(COL_2,item_name);
contentValues.put(COL_10,quantity);
contentValues.put(COL_9,price);
// Value is to be brought by java coding
contentValues.put(COL_7,detail);
}*/
/*
public Cursor insertDataIntoList(){
SQLiteDatabase sqLiteDatabase = this.getReadableDatabase();
Cursor res=sqLiteDatabase.rawQuery(" SELECT * FROM " + TABLE_NAME,null);
return res;
}
*/
}][2]
答案 0 :(得分：0)
只需在适配器中点击行的父级点击，然后从该点击中捕获ID列。
Item_ID.get(position);
然后通过意图传递给要显示所有数据的Activity。然后获取该ID并查询数据库以获取所有数据。
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
答案 1 :(得分：-1)
您可以使用adapter.notifyDataSetChanged();刷新列表视图。