1
我做了一個自定義列表視圖，我在ListFragment。我能夠在我的ListViewAdapter課程中選擇行。但我想讓他們selectabe從我的CompraFragment類擴展ListFragment，並通過選擇一行我想啓動相關的詳細信息頁面。所以我有2個問題：如何使自定義列表視圖可選，並啓動一個新的活動/片段
1）我如何讓我的ListFragment類有可選擇的行，然後通過intents或片段管理器啓動詳細頁面。第二個問題出現在這裏。
2）我應該推出一個詳細頁面作爲Fragmet或Activity（考慮到我已經有這lauches Fragments和/或ListFragments滑動菜單所以基本上一個3級尋呼系統（菜單 - >項目 - >項目細節））
這裏是我的代碼：
fragment_compra.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="@+id/android:list"
android:layout_width="match_parent"
android:descendantFocusability="blocksDescendants"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
我自定義的ListView行：listview_item_row.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
android:clickable="false"
android:focusable="false"
android:padding="5dip" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/relativeLayout"
android:clickable="false"
android:focusable="false"
android:background="@drawable/list_selector" >
<!-- Image dell'ogetto -->
<ImageView
android:id="@+id/ic_thumbnail"
android:layout_width="95dip"
android:layout_height="95dip"
android:clickable="false"
android:focusable="false"
android:src="@drawable/ic_thumbnail" />
<!-- Data di scadenza-->
<TextView
android:id="@+id/tvScadenza"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/ic_thumbnail"
android:layout_toRightOf="@+id/ic_thumbnail"
android:gravity="center"
android:textColor="#040404"
android:typeface="sans"
android:textSize="15sp"
android:clickable="false"
android:focusable="false"
android:textStyle="italic"/>
<ProgressBar
android:id="@+id/hProgressBar"
style="@style/CustomProgressBar"
android:progressDrawable="@drawable/progressbar_color"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/tvScadenza"
android:layout_alignBottom="@+id/ic_thumbnail"
android:clickable="false"
android:focusable="false" />
<!-- Prezzo -->
<TextView
android:id="@+id/tvPrezzo"
android:layout_width="match_parent"
android:layout_height="75dp"
android:layout_below="@id/tvScadenza"
android:textColor="#343434"
android:textSize="30sp"
android:gravity="center"
android:clickable="false"
android:focusable="false"
android:layout_toRightOf="@+id/ic_thumbnail" />
<!-- Followers -->
<TextView
android:id="@+id/tvFollowers"
android:layout_width="match_parent"
android:layout_height="35dp"
android:layout_below="@+id/tvPrezzo"
android:textColor="#343434"
android:textSize="20sp"
android:gravity="center"
android:background="@color/light_grey"
android:layout_toRightOf="@+id/ic_thumbnail"
android:clickable="false"
android:focusable="false"
android:text="@string/followers" />
<!-- Bottone Segui -->
<Button
android:id="@+id/btnSegui"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="false"
android:focusable="false"
android:background="@drawable/ic_segui_m"
android:layout_alignBottom="@+id/tvFollowers" />
</RelativeLayout>
</LinearLayout>
ListViewAdapter類
import java.util.ArrayList;
import java.util.HashMap;
import android.content.Context;
import android.graphics.Bitmap;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;
import com.prjma.lovertech.R;
import com.prjma.lovertech.model.Item;
public class ListViewAdapter extends ArrayAdapter<String> {
private static LayoutInflater inflater = null;
public Context context;
public int layoutResourceId;
public ArrayList<HashMap<String, Object>> items;
public Bitmap icon;
//public ImageLoader imageLoader;
public ListViewAdapter(Context context, int listviewItemRow, ArrayList<HashMap<String, Object>> items, Bitmap icon) {
// TODO Auto-generated constructor stub
super(context, listviewItemRow);
this.items = items;
this.context = context;
this.icon = icon;
}
public int getCount() {
return items.size();
}
public Item getItem(Item position) {
return position;
}
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
View row = convertView;
inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(R.layout.listview_item_row, null);
HashMap<String, Object> item = items.get(position);
if (item != null) {
ImageView listImage = (ImageView)row.findViewById(R.id.ic_thumbnail);
TextView scadenza = (TextView)row.findViewById(R.id.tvScadenza);
TextView prezzo = (TextView)row.findViewById(R.id.tvPrezzo);
TextView followers = (TextView)row.findViewById(R.id.tvFollowers);
ProgressBar hProgressBar = (ProgressBar)row.findViewById(R.id.hProgressBar);
if (listImage != null) {
listImage.setImageBitmap(icon);
listImage.setImageBitmap((Bitmap) item.get("pic1m"));
}
if (scadenza != null) {
scadenza.setText((CharSequence) item.get("scadenza"));
}
if (prezzo != null) {
prezzo.setText((CharSequence) item.get("prezzo"));
}
if (followers != null) {
followers.setText((CharSequence) item.get("followers"));
}
if (hProgressBar != null) {
hProgressBar.setProgress((Integer) item.get("coefficient"));
}
}
//row.onListItemClick(new OnItemClickListener1());
row.setOnClickListener(new OnItemClickListener(position));
return row;
}
private class OnItemClickListener implements OnClickListener {
private int mPosition;
private OnItemClickListener(int position){
mPosition = position;
}
@Override
public void onClick(View arg0) {
Log.i("onListItemClickList", "Item clicked: " + mPosition);
Toast.makeText(context, "Message " + Integer.toString(mPosition), Toast.LENGTH_SHORT).show();
}
}
}
compraFragment類
import java.util.ArrayList;
import java.util.HashMap;
import android.app.ListFragment;
import android.app.ProgressDialog;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.Toast;
import com.prjma.lovertech.R;
import com.prjma.lovertech.adapter.ListViewAdapter;
import com.prjma.lovertech.util.MVPFunctions;
public class CompraFragment extends ListFragment {
public ListView listView;
public ListViewAdapter adapter;
/**
* Keep track of the login task to ensure we can cancel it if requested.
*/
private DownloadTask mDownloadTask = null;
public ArrayList<HashMap<String, Object>> items;
public Bitmap icon;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
//View rootView = inflater.inflate(R.layout.fragment_compra, false);
View rootView = inflater.inflate(R.layout.fragment_compra, container, false);
// now you must initialize your list view
listView = (ListView) rootView.findViewById(android.R.id.list);
mDownloadTask = new DownloadTask();
mDownloadTask.execute((Void) null);
return rootView;
}
/**
* Represents an asynchronous login/registration task used to authenticate
* the user.
*/
public class DownloadTask extends AsyncTask<Void, Void, Boolean> {
private ProgressDialog progressDialog;
@Override
protected Boolean doInBackground(Void... params) {
// TODO: attempt authentication against a network service.
//prendi tutti gli id dal webserver
ArrayList<Long> ids = MVPFunctions.getMioSingolo().search();
//per ogni id prendi l'elemento con tutti i valuori di risposta
items = new ArrayList<HashMap<String, Object>>();
for(int i=0; i < ids.size(); i++){
items.add(MVPFunctions.getMioSingolo().getItem(ids.get(i)));
}
return true;
}
@Override
protected void onPreExecute(){
/*
* This is executed on UI thread before doInBackground(). It is
* the perfect place to show the progress dialog.
*/
progressDialog = ProgressDialog.show(getActivity(), "Wall", "Downloading Content...");
}
@Override
protected void onPostExecute(final Boolean success) {
mDownloadTask = null;
// dismiss the dialog after getting all products
progressDialog.dismiss();
//showProgress(false);
if (items.get(0).get("status error")!= null){
Toast.makeText(getActivity(), "status error = " + items.get(0).get("status error"), Toast.LENGTH_LONG).show();
Log.i("status error put toast", (String) items.get(0).get("status error"));
//fai qualcosa, tipo torna indietro, ecc
}
// updating UI from Background Thread
ListViewAdapter adapter = new ListViewAdapter(getActivity(),R.layout.listview_item_row, items, icon);
// updating listview
listView.setAdapter(adapter);
}
@Override
protected void onCancelled() {
mDownloadTask = null;
//showProgress(false);
}
}
}
您可以使用意向開始活動。 – Raghunandan
可以請你告訴我在這種情況下如何？ – Pheonix7