提前致谢。我成功地将数据从列表视图传递到下一个活动,但现在我需要将数据库中的图像添加到列表视图,然后将其传递给下一个活动。或者,如果它是最简单的,只需将图像传递给下一个活动而不在列表视图中显示它。
package com.example.assfar.travel_guide;
import java.io.ByteArrayInputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import com.example.assfar.R;
import com.example.assfar.database.DBHelper;
import android.app.ListActivity;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
public class TravelGuide extends ListActivity {
private DBHelper dataBase;
private List<String> guide_title_list= new ArrayList<String>();
HashMap<String,String> details= new HashMap<String,String>();
private Cursor cursor;
String title;
Integer id;
String desc;
private ImageView imgv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.travelguide);
imgv = (ImageView) findViewById(R.id.image);
dataBase= DBHelper.instance();
SQLiteDatabase db= dataBase.getWritableDatabase();
cursor= db.rawQuery("select * from Tour_Guide", null);
if(cursor!=null) {
if(cursor.moveToFirst());
{
do
{
desc = cursor.getString(cursor.getColumnIndex("tour_Description"));
title= cursor.getString(cursor.getColumnIndex("guide_title"));
id= cursor.getInt(cursor.getColumnIndex("_id"));
guide_title_list.add("" + title +id );
details.put("" + title +id ,title+desc+imgv);
} while(cursor.moveToNext());
}
}
this.setListAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, guide_title_list));
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
//String selectedItem= ((TextView) v).getText().toString();
String selectedValue= (String) getListAdapter(). getItem(position);
String itemTitleDesc=(String) details.get(selectedValue);
Intent i = new Intent(TravelGuide.this, Travel_Guide_Details.class);
i.putExtra("selected item", selectedValue);
i.putExtra("selected item", itemTitleDesc);
startActivity(i);
}
}
下一个活动:
package com.example.assfar.travel_guide;
import com.example.assfar.R;
import com.example.assfar.database.DBHelper;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.TextView;
public class Travel_Guide_Details extends Activity {
private DBHelper dataBase;
private TextView textView;
private ImageView imgv;
Bitmap bmp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.travel_guide_details);
//tour guide description in text view
textView = (TextView)findViewById(R.id.guide_desc);
Intent i= getIntent();
//getting attached intent data
String item = i.getStringExtra("selected item");
//displaying selected item name
textView.setText(item);
}
}