当用户单击列表时，我需要一种更新 MyCustomAdapter 的方法，以便删除哈希键、值对并更新列表。
我真的卡在 onListItemClick 你能帮忙吗
谢谢格雷厄姆
protected void onListItemClick(ListView l, View v, int position, long id) {
//TODO Auto-generated method stub
Toast.makeText(getApplicationContext(),"SHORT click" , Toast.LENGTH_LONG).show();
Toast.makeText(getApplicationContext(),"DATA is" + map.entrySet() , Toast.LENGTH_LONG).show(); //NAME,VALUE
//remove the key,value pair and update CustomAdapter
?????
//end of remove entries from hashmap map
}
package telephone.org;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.Map.Entry;
import telephone.org.MyService.LocalBinder;
import android.app.ActivityManager;
import android.app.ListActivity;
import android.app.ActivityManager.RunningServiceInfo;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.IBinder;
import android.provider.ContactsContract;
import android.provider.ContactsContract.PhoneLookup;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemLongClickListener;
//class 1
public class DynamicLists extends ListActivity {
MyService mService;
boolean mBound = false;
//class 2 ///////////////////////////////////
public class MyCustomAdapter extends BaseAdapter {
public HashMap<String, Integer> mData = new HashMap<String,Integer>();
private String[] mKeys;
//constructor
public MyCustomAdapter(DynamicLists dynamicLists, int row, HashMap<String, Integer> map){
mData = map;
mKeys = mData.keySet().toArray(new String[map.size()]);
Log.d(TAG, "INSIDE ADAPTER constructor HELLO WORLD " + map.entrySet());
}
public MyCustomAdapter(MyService mService, int row, Object map) {
// TODO Auto-generated constructor stub
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
//TODO Auto-generated method stub
Log.d(TAG, "inside getview ");
View row=convertView;
if (row==null){
LayoutInflater inflater=getLayoutInflater();
row=inflater.inflate(R.layout.row, null);
}
TextView label =(TextView)row.findViewById(R.id.blocked);
label.setText(mKeys[position] + " " + getItem(position).toString()); //key + value
return row;
}
@Override
public int getCount()
{
// TODO Auto-generated method stub
return mData.size();
}
@Override
public Object getItem(int position)
{
// TODO Auto-generated method stub
Log.d(TAG, "inside getitem " + mData.get(mKeys[position]));
return mData.get(mKeys[position]);
}
@Override
public long getItemId(int position)
{
// TODO Auto-generated method stub
return position;
}
} //end of class 2 ////////////////////////
private static final String TAG = "DynamicList";
//class 1
public static HashMap<String, Integer> map = new HashMap<String, Integer>();
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
//TODO Auto-generated method stub
Toast.makeText(getApplicationContext(),"SHORT click" , Toast.LENGTH_LONG).show();
Toast.makeText(getApplicationContext(),"DATA is" + map.entrySet() , Toast.LENGTH_LONG).show(); //NAME,VALUE
//remove the name,value pair
//end of remove entries from hashmap map
}
@Override
public void onStart() {
super.onStart();
isMyServiceRunning();
}
public void onStop() {
super.onStop();
// Unbind from the service
if (mBound) {
unbindService(mConnection);
mBound = false;
}
}
private boolean isMyServiceRunning() {
ActivityManager manager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
for (RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
if ("telephone.org.MyService".equals(service.service.getClassName()))
{
//Toast.makeText(getApplicationContext(),"SERVICE IS RUNNING", Toast.LENGTH_LONG).show();
Intent intent = new Intent(this, MyService.class);
bindService(intent, mConnection, Context.BIND_AUTO_CREATE); //SEE INTERACT WITH SERVICE BELOW
return true;
}
}
Toast.makeText(getApplicationContext(),"SERVICE IS STOPPED AND IS NOT RUNNING", Toast.LENGTH_LONG).show();
return false;
}
//INTERACT WITH SERVICE
/** Defines callbacks for service binding, passed to bindService() */
private ServiceConnection mConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName className, IBinder service) {
// We've bound to LocalService, cast the IBinder and get LocalService instance
LocalBinder binder = (LocalBinder) service;
mService = binder.getService();
mBound = true;
Set<Entry<String, Integer>> whatsup = mService.getNumbers();
//Toast.makeText(getApplicationContext(),"NUMBER INTERACTION IS" + whatsup, Toast.LENGTH_LONG).show();
Log.d(TAG, "ELEMENTS from service are:" + whatsup);
//Toast.makeText(getApplicationContext(),"NUMBER OF ENTRIES IS" + whatsup.size(), Toast.LENGTH_LONG).show();
//convert SET BACK TO HASHMAP
for (Entry<String,Integer> entry : whatsup) {
String name = null;
String[] projection = new String[] {
ContactsContract.PhoneLookup.DISPLAY_NAME};
Uri uri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI, Uri.encode(entry.getKey()));
Cursor cursor = getContentResolver().query(uri, projection, null, null, null);
if (cursor.moveToFirst()) {
name = cursor.getString(cursor.getColumnIndex(ContactsContract.PhoneLookup.DISPLAY_NAME));
}
//Toast.makeText(getApplicationContext(),"RESOLVED NAME IS " + name, Toast.LENGTH_LONG).show();
projection = null;
map.put(name,entry.getValue());
}
//NEW CODE
MyCustomAdapter custom = (new MyCustomAdapter(DynamicLists.this, R.layout.row, map));
setListAdapter(custom);
custom.notifyDataSetChanged();
//END NEW CODE
}
//end CONVERT SET BACK TO HASHMAP
@Override
public void onServiceDisconnected(ComponentName arg0) {
mBound = false;
}
};
//END INTERACTION WITH SERVICE
} //end of class 1