Java Android从customListview获取图像，并在imageview中显示相同的图像，而不使用数据库_Java_Android

Java Android从customListview获取图像，并在imageview中显示相同的图像，而不使用数据库

java android

Java Android从customListview获取图像，并在imageview中显示相同的图像，而不使用数据库,java,android,Java,Android,我有带有图像和文本的customListview。我正在访问数据库中的文本，并且图像存储为数组。当我单击listview的某一行时，我希望与该行图像对应的图像显示在另一个活动的imageview中。我不知道如何访问所选图像。我不想在数据库中存储图像 product\u display.java public class product_display extends Activity { ListView prd_list; @Override protected void onCreate

我有带有图像和文本的customListview。我正在访问数据库中的文本，并且图像存储为数组。当我单击listview的某一行时，我希望与该行图像对应的图像显示在另一个活动的imageview中。我不知道如何访问所选图像。我不想在数据库中存储图像

product\u display.java

public class product_display extends Activity {


ListView prd_list;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.product_dispay);
    prd_list = (ListView) findViewById(R.id.list);
    DataBaseHandler dbh = new DataBaseHandler(this);
     Intent in=getIntent();
     Bundle bundle=in.getExtras();
     final String list=bundle.getString("key");
     SQLiteDatabase db = dbh.getWritableDatabase();
    Cursor cr = db.rawQuery("SELECT * FROM product", null);
    final String[] pname = new String[cr.getCount()];
    String[] price = new String[cr.getCount()];

    int i = 0;
    while(cr.moveToNext())
    {
        String name = cr.getString(cr.getColumnIndex("pname"));
        String prprice = cr.getString(cr.getColumnIndex("pprice"));

        pname[i] = name;
        price[i] = prprice;
        i++;
    }

    ListAdapter adapter = new ListAdapter(this, pname, price);
    prd_list.setAdapter(adapter);

    prd_list.setOnItemClickListener(new OnItemClickListener() {

        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {
            // TODO Auto-generated method stub
            String nme = pname[arg2];   
   //       passing username from loginpage
            Bundle bun = new Bundle();
            bun.putString("key",list);
  //        passing product name as bundle

            Bundle bn = new Bundle();
            bn.putString("name",nme);
            Intent in = new Intent(product_display.this, Product_Details.class);
            in.putExtras(bun);
            in.putExtras(bn);
            startActivity(in);
            }
    });



}

}

public class ListAdapter extends BaseAdapter {
private final String[] pname;
private final String[] price;
Integer [] pmge ={R.drawable.candle1,R.drawable.candl3,
        R.drawable.candl4,R.drawable.candl5,R.drawable.candl6,
        R.drawable.lawn,R.drawable.sglc10,R.drawable.senson,R.drawable.thejus6669};
private Context mcontext;
    public ListAdapter(Context c,String[] pname,String[] price){
    mcontext=c;
    this.pname=pname;
    this.price=price;
}

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return pname.length;
    }

    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
         View List;
         LayoutInflater mLayoutinflater=(LayoutInflater) mcontext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
         if(convertView==null){
         List=new View(mcontext);

         List=mLayoutinflater.inflate(R.layout.mylist, parent, false);
         }
         else{
         List = (View)convertView;
         }

         TextView textView1 = (TextView)List.findViewById(R.id.pr_name);
         TextView textView2 = (TextView)List.findViewById(R.id.pr_price);
         ImageView imageview= (ImageView)List.findViewById(R.id.pr_img);
         textView1.setText(pname[position].toString());
         textView2.setText("Rs "+price[position] +" /-");
         imageview.setImageResource(pmge[position]);
         // TODO Auto-generated method stub
         return List;

    }

}

public class Product_Details extends Activity{

TextView name,price,specification,feature;
String nme;
SQLiteDatabase mydb;
String pname;
String prprice;
String pspec;
String pfeature;
Button add2cart,by_nw;
ImageView image;
ImageButton imgbtn;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.product_dtls);
    image=(ImageView)findViewById(R.id.pr_img);
    name = (TextView) findViewById(R.id.txtPr_name);
    price = (TextView) findViewById(R.id.txtprice);
    specification=(TextView)findViewById(R.id.txtPr_spec);
    feature=(TextView)findViewById(R.id.txtPr_feature);
    imgbtn=(ImageButton)findViewById(R.id.cartimg);
    add2cart=(Button)findViewById(R.id.add2cart);
    by_nw=(Button)findViewById(R.id.buy_nw);
    DataBaseHandler dbh = new DataBaseHandler(this);
     SQLiteDatabase db = dbh.getWritableDatabase();
    Intent in = getIntent();
    Bundle bn = in.getExtras();
    Bundle bun=in.getExtras();
    final String dtl=bun.getString("key");
    nme = bn.getString("name");

    while(cr.moveToNext())
    {
        String name = cr.getString(cr.getColumnIndex("pname"));
        String pr1price = cr.getString(cr.getColumnIndex("pprice"));
        String prspc=cr.getString(cr.getColumnIndex("pspec"));
        String prfeature=cr.getString(cr.getColumnIndex("pfeature"));
        pname = name;
        prprice = pr1price;
        pspec=prspc;
        pfeature=prfeature;
    }
    name.setText(pname);
    price.setText("Rs " +prprice + "/-");
    specification.setText(pspec);
    feature.setText(pfeature);


    add2cart.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            boolean incart=false;
            String nm=name.getText().toString();
            mydb=Product_Details.this.openOrCreateDatabase("addcart", MODE_PRIVATE, null);
            mydb.execSQL("CREATE TABLE IF NOT EXISTS add2cart(usr TEXT,img BLOB,pnme TEXT,prate NUMERIC,pqty NUMERIC,ptotl NUMERIC)");
            Cursor cur=mydb.rawQuery("select * from add2cart where pnme='"+nm+"' AND usr='"+dtl+"'",null);

            if (cur.moveToFirst()){
                String prdname=cur.getString(cur.getColumnIndex("pnme"));

                if (nm.equals(prdname)){
                    add2cart.setText("Already in Cart");
                    incart=true;
                }
            }

            if(incart==false){
                mydb.execSQL("INSERT INTO add2cart (usr,pnme,prate)VALUES('"+dtl+"','"+nm+"','"+prprice+"')");
                Toast.makeText(getApplicationContext(),"added to cart",Toast.LENGTH_SHORT).show();

            }

        }
    });
}
}

产品详细信息。java

public class product_display extends Activity {


ListView prd_list;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.product_dispay);
    prd_list = (ListView) findViewById(R.id.list);
    DataBaseHandler dbh = new DataBaseHandler(this);
     Intent in=getIntent();
     Bundle bundle=in.getExtras();
     final String list=bundle.getString("key");
     SQLiteDatabase db = dbh.getWritableDatabase();
    Cursor cr = db.rawQuery("SELECT * FROM product", null);
    final String[] pname = new String[cr.getCount()];
    String[] price = new String[cr.getCount()];

    int i = 0;
    while(cr.moveToNext())
    {
        String name = cr.getString(cr.getColumnIndex("pname"));
        String prprice = cr.getString(cr.getColumnIndex("pprice"));

        pname[i] = name;
        price[i] = prprice;
        i++;
    }

    ListAdapter adapter = new ListAdapter(this, pname, price);
    prd_list.setAdapter(adapter);

    prd_list.setOnItemClickListener(new OnItemClickListener() {

        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {
            // TODO Auto-generated method stub
            String nme = pname[arg2];   
   //       passing username from loginpage
            Bundle bun = new Bundle();
            bun.putString("key",list);
  //        passing product name as bundle

            Bundle bn = new Bundle();
            bn.putString("name",nme);
            Intent in = new Intent(product_display.this, Product_Details.class);
            in.putExtras(bun);
            in.putExtras(bn);
            startActivity(in);
            }
    });



}

}

public class ListAdapter extends BaseAdapter {
private final String[] pname;
private final String[] price;
Integer [] pmge ={R.drawable.candle1,R.drawable.candl3,
        R.drawable.candl4,R.drawable.candl5,R.drawable.candl6,
        R.drawable.lawn,R.drawable.sglc10,R.drawable.senson,R.drawable.thejus6669};
private Context mcontext;
    public ListAdapter(Context c,String[] pname,String[] price){
    mcontext=c;
    this.pname=pname;
    this.price=price;
}

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return pname.length;
    }

    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
         View List;
         LayoutInflater mLayoutinflater=(LayoutInflater) mcontext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
         if(convertView==null){
         List=new View(mcontext);

         List=mLayoutinflater.inflate(R.layout.mylist, parent, false);
         }
         else{
         List = (View)convertView;
         }

         TextView textView1 = (TextView)List.findViewById(R.id.pr_name);
         TextView textView2 = (TextView)List.findViewById(R.id.pr_price);
         ImageView imageview= (ImageView)List.findViewById(R.id.pr_img);
         textView1.setText(pname[position].toString());
         textView2.setText("Rs "+price[position] +" /-");
         imageview.setImageResource(pmge[position]);
         // TODO Auto-generated method stub
         return List;

    }

}

public class Product_Details extends Activity{

TextView name,price,specification,feature;
String nme;
SQLiteDatabase mydb;
String pname;
String prprice;
String pspec;
String pfeature;
Button add2cart,by_nw;
ImageView image;
ImageButton imgbtn;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.product_dtls);
    image=(ImageView)findViewById(R.id.pr_img);
    name = (TextView) findViewById(R.id.txtPr_name);
    price = (TextView) findViewById(R.id.txtprice);
    specification=(TextView)findViewById(R.id.txtPr_spec);
    feature=(TextView)findViewById(R.id.txtPr_feature);
    imgbtn=(ImageButton)findViewById(R.id.cartimg);
    add2cart=(Button)findViewById(R.id.add2cart);
    by_nw=(Button)findViewById(R.id.buy_nw);
    DataBaseHandler dbh = new DataBaseHandler(this);
     SQLiteDatabase db = dbh.getWritableDatabase();
    Intent in = getIntent();
    Bundle bn = in.getExtras();
    Bundle bun=in.getExtras();
    final String dtl=bun.getString("key");
    nme = bn.getString("name");

    while(cr.moveToNext())
    {
        String name = cr.getString(cr.getColumnIndex("pname"));
        String pr1price = cr.getString(cr.getColumnIndex("pprice"));
        String prspc=cr.getString(cr.getColumnIndex("pspec"));
        String prfeature=cr.getString(cr.getColumnIndex("pfeature"));
        pname = name;
        prprice = pr1price;
        pspec=prspc;
        pfeature=prfeature;
    }
    name.setText(pname);
    price.setText("Rs " +prprice + "/-");
    specification.setText(pspec);
    feature.setText(pfeature);


    add2cart.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            boolean incart=false;
            String nm=name.getText().toString();
            mydb=Product_Details.this.openOrCreateDatabase("addcart", MODE_PRIVATE, null);
            mydb.execSQL("CREATE TABLE IF NOT EXISTS add2cart(usr TEXT,img BLOB,pnme TEXT,prate NUMERIC,pqty NUMERIC,ptotl NUMERIC)");
            Cursor cur=mydb.rawQuery("select * from add2cart where pnme='"+nm+"' AND usr='"+dtl+"'",null);

            if (cur.moveToFirst()){
                String prdname=cur.getString(cur.getColumnIndex("pnme"));

                if (nm.equals(prdname)){
                    add2cart.setText("Already in Cart");
                    incart=true;
                }
            }

            if(incart==false){
                mydb.execSQL("INSERT INTO add2cart (usr,pnme,prate)VALUES('"+dtl+"','"+nm+"','"+prprice+"')");
                Toast.makeText(getApplicationContext(),"added to cart",Toast.LENGTH_SHORT).show();

            }

        }
    });
}
}

编辑的代码

@Override
   public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
    // TODO Auto-generated method stub
    clas = (Integer)getListAdapter().getItem(arg2);
    Intent in = new Intent(product_display.this, Product_Details.class);
    in.putExtra("num", clas);
    startActivity(in);

}

但如果图像是我的图像视图，如何将图像设置为我的图像视图

image.set ???

单击Listview

// Capture ListView item click
    itemVie.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
resulta = data.get(position);
Intent intent = new Intent(context, SecondActivity.class);

intent.putExtra("albname", resulta.get(Portfolio.TAG_TITLE));
intent.putExtra("portimages",resulta.get(Portfolio.TAG_IMAGE));
context.startActivity(intent);



}
});

如果图像位于数组中，请确保数组的索引与从数据库获取的数据的索引相匹配（在将光标传递给适配器之前，可以通过将光标转换为列表来实现），然后在适配器的getview中，通过以下代码行获得图像：

//我想你已经照我说的做了。 //position是列表中的第n个项目，item是从数据库获得的列表中的第n个对象（模型）。V是您返回的当前视图

V.setTag（图像阵列[位置]）

该V将作为onListItemClick方法中的参数传递给您

通过这行代码获取图像

//V是传递的视图参数

位图图像=V.getTag（）

您可以通过调用适配器的

getItem

方法，从

ListView

获取所选行项目对象，方法如下

getListAdapter

prd_list.setOnItemClickListener(new OnItemClickListener() {

    public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {     
      Integer class = (Integer)getListAdapter().getItem(arg2);
      // pass this integer to the another activity and display there.
}

prd_list.setOnItemClickListener（新的OnItemClickListener（）{
public void onItemClick（AdapterView arg0、视图arg1、整型arg2、长型arg3）{
整型类=（整型）getListAdapter（）.getItem（arg2）；
//将此整数传递给另一个活动并在那里显示。
}

OnListItemClick（）在我的代码中没有被调用。怎么办。？像这样的实现用于你的活动公共类YourClass扩展活动实现OnItemClickListener请看一看我编辑的代码…我该怎么办？@paypaluser itemVie和数据是适配器参数。还有什么事吗？我对适配器概念不熟悉。你能编辑上面的代码部分吗使用我在代码中使用的变量，而不是itemVie和data。这样我就可以理解了