Java 带自定义单元格的PullToRefresh listView Android
我使用了这个图书馆: 工作很好,但是在ListView中很简单(我在cell android模式中说的很简单) 我戴着一个Adpter,放在我的自定义列表视图中,以显示带有图像、标题和描述的单元格 我与adpter的班级:Java 带自定义单元格的PullToRefresh listView Android,java,android,listview,Java,Android,Listview,我使用了这个图书馆: 工作很好,但是在ListView中很简单(我在cell android模式中说的很简单) 我戴着一个Adpter,放在我的自定义列表视图中,以显示带有图像、标题和描述的单元格 我与adpter的班级: public class extends Main_podcast ListActivity implements {OnItemClickListener private Bitmap pathImgSmal; / ** Called When the activ
public class extends Main_podcast ListActivity implements {OnItemClickListener
private Bitmap pathImgSmal;
/ ** Called When the activity is first created. * /
@ Override
public void onCreate (Bundle savedInstanceState) {
super.onCreate (savedInstanceState);
Mybundle bundle = new Bundle ();
mybundle.putString ("podcastnumber", "0");
/ / Check for connection and starts downloading the XML
Connected conected Boolean = (this);
if (conected == true) {
DoInBackground new (). execute ();
Else {}
new AlertDialog.Builder (Main_podcast.this)
. SetTitle ("Alert!")
. SetMessage ("Unable to connect to the Internet," +
"Check your network or try again later.")
. SetNeutralButton ("OK"
new DialogInterface.OnClickListener () {
public void onClick (DialogInterface dialog,
int which) {}
}). Show ();
}
}
/ / Method calls the XML Parser
public void do_update ()
{
PodcastParser.parse ();
}
/ / Method that populates the list view with XML parameters
public void populate_listview ()
{
List <Itens> podcastList <Itens> = new ArrayList ();
for (int i = 0; i <arraysPodcast.PodcastTitle.length; i + +) {
end item Items = new Items ();
item.setTitle (arraysPodcast.PodcastTitle [i]);
item.setData (arraysPodcast.PodcastData [i]);
item.setImage (arraysPodcast.ArrayIMGPodcast [i]);
podcastList.add (item);
}
setListAdapter (new PodcastAdapter (this, podcastList));
ListView shot getListView = ();
shot.setOnItemClickListener ((OnItemClickListener) this);
}
public void onItemClick (AdapterView <?> arg0, View v, int position, long id) {
/ / Start the Activity podcast regarding your number from the list
Myintent intent = new Intent ("com.example.player.PODCAST");
Mybundle bundle = new Bundle ();
mybundle.putInt ("podcastnumber" position);
myintent.putExtras (mybundle);
startActivity (myintent);
}
private class extends DoInBackground AsyncTask <Void, Void, Void>
implements DialogInterface.OnCancelListener
{
ProgressDialog private dialog;
protected void OnPreExecute ()
{
dialog = ProgressDialog.show (Main_podcast.this, "", "Loading Podcasts ...", true);
}
protected void doInBackground (Void. unused ..)
{
do_update ();
return null;
}
OnPostExecute protected void (Void unused)
{
dialog.dismiss ();
populate_listview ();
}
public void onCancel (DialogInterface dialog)
{
cancel (true);
dialog.dismiss ();
}
}
public static boolean Connected (Context context) {
try {
= ConnectivityManager cm (ConnectivityManager)
context.getSystemService (Context.CONNECTIVITY_SERVICE);
LogSync String = null;
LogToUserTitle String = null;
if (cm.getNetworkInfo (ConnectivityManager.TYPE_MOBILE). isConnected ()) {
LogSync + = "\ nConectado 3G Internet";
LogToUserTitle + = "Connected to 3G Internet";
return true;
} Else if (cm.getNetworkInfo (ConnectivityManager.TYPE_WIFI). IsConnected ()) {
LogSync + = "\ nConectado WIFI Internet";
LogToUserTitle + = "Connected to Wireless Internet";
return true;
Else {}
LogSync + = "\ nYou have internet connection";
LogToUserTitle + = "Do not have an internet connection";
return false;
}
} Catch (Exception e) {
return false;
}
}
} / / Class
public类扩展了Main\u播客ListActivity实现了{OnItemClickListener
私有位图路径;
/**首次创建活动时调用。*/
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
Mybundle=新bundle();
mybundle.putString(“podcastnumber”,“0”);
//检查连接并开始下载XML
连通连通布尔=(此);
如果(连接==真){
doinbackgroundnew().execute();
Else{}
新建AlertDialog.Builder(Main_podcast.this)
.SetTitle(“警报!”)
.SetMessage(“无法连接到Internet,”+
“请检查您的网络或稍后再试。”)
.SetNeutralButton(“确定”
新建DialogInterface.OnClickListener(){
公共void onClick(对话框接口对话框,
int其中){}
}).Show();
}
}
//Method调用XML解析器
公共void do_update()
{
PodcastParser.parse();
}
//Method,该方法使用XML参数填充列表视图
public void填充\u列表视图()
{
List-podcastList=newarraylist();
对于(int i=0;i而言,决定如下:
public class PullToRefreshActivity extends ListActivity implements OnItemClickListener {
private LinkedList<String> mListItems;
private List<Itens> podcastList;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.pull_to_refresh);
// Set a listener to be invoked when the list should be refreshed.
// ======================================================
Bundle mybundle = new Bundle();
mybundle.putString("podcastnumber", "0");
//verifica se há conexao e inicia download do XML
Boolean conected = Conectado(this);
if(conected == true){
new DoInBackground().execute();
}else{
new AlertDialog.Builder(PullToRefreshActivity.this)
.setTitle("Alerta!")
.setMessage("Não foi possível estabelecer uma conexão com a Internet," +
"verifique sua rede ou tente novamente mais tarde.")
.setNeutralButton("OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int which) {}
}).show();
}
// ======================================================
((PullToRefreshListView) getListView()).setOnRefreshListener(new OnRefreshListener() {
@Override
public void onRefresh() {
// Do work to refresh the list here.
new DoInBackground().execute();
}
});
}
// ==================================================================
public void do_update()
{
PodcastParser.parse();
}
//metodo que preenche a list view com parametros do XML
public void populate_listview()
{
podcastList = new ArrayList<Itens>();
for (int i = 0; i < arraysPodcast.PodcastTitle.length; i++) {
final Itens item = new Itens();
item.setTitle(arraysPodcast.PodcastTitle[i]);
item.setData(arraysPodcast.PodcastData[i]);
item.setImage(arraysPodcast.ArrayIMGPodcast[i]);
podcastList.add(item);
}
setListAdapter(new PodcastAdapter(this, podcastList));
((PullToRefreshListView) getListView()).setOnItemClickListener((OnItemClickListener) this);
}
public void onItemClick(AdapterView<?> arg0, View v, int position, long id) {
//Inicia Activity da podcast referente a seu numero da lista
Intent myintent = new Intent("com.example.player.PODCAST");
Bundle mybundle = new Bundle();
mybundle.putInt("podcastnumber", (position-1));
Log.e("posicao na lista",""+position);
myintent.putExtras(mybundle);
startActivity(myintent);
}
private class DoInBackground extends AsyncTask<Void, Void, Void>
implements DialogInterface.OnCancelListener
{
private ProgressDialog dialog;
protected void onPreExecute()
{
dialog = ProgressDialog.show(PullToRefreshActivity.this, "", "Carregando Podcasts...", true);
}
protected Void doInBackground(Void... unused)
{
PodcastAdapter.topBar=true;
do_update();
return null;
}
protected void onPostExecute(Void unused)
{
((PullToRefreshListView) getListView()).onRefreshComplete();
dialog.dismiss();
populate_listview();
}
public void onCancel(DialogInterface dialog)
{
cancel(true);
dialog.dismiss();
}
}
public static boolean Conectado(Context context) {
try {
ConnectivityManager cm = (ConnectivityManager)
context.getSystemService(Context.CONNECTIVITY_SERVICE);
String LogSync = null;
String LogToUserTitle = null;
if (cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).isConnected()) {
LogSync += "\nConectado a Internet 3G ";
LogToUserTitle += "Conectado a Internet 3G ";
return true;
} else if(cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnected()){
LogSync += "\nConectado a Internet WIFI ";
LogToUserTitle += "Conectado a Internet WIFI ";
return true;
} else {
LogSync += "\nNão possui conexão com a internet ";
LogToUserTitle += "Não possui conexão com a internet ";
return false;
}
} catch (Exception e) {
return false;
}
}
}
公共类PullToRefreshActivity扩展ListActivity实现OnItemClickListener{
私有链接列表;
私人名单播客名单;
/**在首次创建活动时调用*/
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.pull\u到\u刷新);
//设置要在刷新列表时调用的侦听器。
// ======================================================
Bundle mybundle=新Bundle();
mybundle.putString(“podcastnumber”,“0”);
//verifica seáconexao e inicia下载XML
布尔连接=连接(this);
如果(连接==真){
新建DoInBackground().execute();
}否则{
新建AlertDialog.Builder(PullToRefreshActivity.this)
.setTitle(“Alerta!”)
.setMessage(“网络公司”+
“验证是否需要进行重大更新。”)
.setNeutralButton(“确定”,
新建DialogInterface.OnClickListener(){
公共void onClick(对话框接口对话框,
int其中){}
}).show();
}
// ======================================================
((PullToRefreshListView)getListView()).setOnRefreshListener(新的OnRefreshListener()){
@凌驾
公共void onRefresh(){
//请务必刷新此处的列表。
新建DoInBackground().execute();
}
});
}
// ==================================================================
public void do_update()
{
parse();
}
//metodo que预先设置列表视图com参数do XML
public void populate_listview()
{
podcastList=newarraylist();
for(int i=0;i