1
Ich habe Probleme, wählen Sie Artikel auf meinem ListView. Als ich geklickt habe passiert nichts und ich konnte nicht zur nächsten Aktivität gehen, da die aktuelle listView nicht anklickbar ist. Ich habe versucht Code Zeile für Zeile zu debuggen, aber es scheint, als ob es nicht in den public void onItemClick Teil eingeben. Warum wurde es so?Wenn angeklickt wählen Sie Element in ListView nichts passiert, aber kein Fehler in LogCat
Hier ist mein Code,
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.Button;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.HashMap;
public class ViewAllBills extends AppCompatActivity implements ListView.OnItemClickListener {
private ListView listView;
private Button mydebtsBtn;
private String JSON_STRING;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_all_bills);
listView = (ListView) findViewById(R.id.listView);
listView.setOnItemClickListener(this);
getJSON();
myDebt();
}
//for new bill
public void myDebt() {
mydebtsBtn = (Button) findViewById(R.id.buttonMyDebt);
mydebtsBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Intent page1 = new Intent(ViewAllBills.this,myDebt.class);
startActivity(page1);
}
});}
private void showBills(){
JSONObject jsonObject = null;
ArrayList<HashMap<String,String>> list = new ArrayList<HashMap<String, String>>();
try {
jsonObject = new JSONObject(JSON_STRING);
JSONArray result = jsonObject.getJSONArray(Config.TAG_JSON_ARRAY);
for(int i = 0; i<result.length(); i++){
JSONObject jo = result.getJSONObject(i);
String id = jo.getString(Config.TAG_ID);
String desc = jo.getString(Config.TAG_DESCRIPTION);
String amo = jo.getString(Config.TAG_AMOUNT);
HashMap<String,String> bills = new HashMap<>();
bills.put(Config.TAG_ID,id);
bills.put(Config.TAG_DESCRIPTION,desc);
bills.put(Config.TAG_AMOUNT,amo);
list.add(bills);
}
} catch (JSONException e) {
e.printStackTrace();
}
ListAdapter adapter = new SimpleAdapter(
ViewAllBills.this, list, R.layout.list_item,
new String[]{Config.TAG_ID,Config.TAG_DESCRIPTION,Config.TAG_AMOUNT},
new int[]{R.id.id, R.id.description,R.id.amountBill});
listView.setAdapter(adapter);
}
private void getJSON(){
class GetJSON extends AsyncTask<Void,Void,String>{
ProgressDialog loading;
@Override
protected void onPreExecute() {
super.onPreExecute();
loading = ProgressDialog.show(ViewAllBills.this,"Fetching Data","Wait...",false,false);
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
loading.dismiss();
JSON_STRING = s;
showBills();
}
@Override
protected String doInBackground(Void... params) {
RequestHandler rh = new RequestHandler();
String s = rh.sendGetRequest(Config.URL_GET_ALL);
return s;
}
}
GetJSON gj = new GetJSON();
gj.execute();
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent intent = new Intent(ViewAllBills.this, ViewBills.class);
HashMap<String,String> map =(HashMap)parent.getItemAtPosition(position);
String billId = map.get(Config.TAG_ID).toString();
intent.putExtra(Config.BILL_ID,billId);
startActivity(intent);
}
}
Dies ist meine XML-Datei
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true"
>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
android:background="@color/skyBlue">
<Button android:id="@+id/buttonMyDebt"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_marginTop="10dip"
android:background="@color/colorAccent"
android:textColor="@color/black"
android:textStyle="bold"
android:focusable="false"
android:text="My Debt"
android:onClick="myDebt"/>
<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="40dp"
android:columnCount="3"
android:rowCount="3"
android:background="@color/softGrey"
android:layout_marginTop="5dp">
<TextView
android:id="@+id/ids"
android:layout_width="40dp"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_marginLeft="10dp"
android:textStyle="bold"
android:layout_gravity="center"
android:text="ID"
/>
<TextView
android:id="@+id/descriptions"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:textStyle="bold"
android:layout_marginTop="10dp"
android:text="Bill Description"
android:layout_gravity="center"
/>
<TextView
android:id="@+id/amounts"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:textStyle="bold"
android:layout_marginTop="10dp"
android:text="Amount (RM)"
android:layout_gravity="right"
/>
</GridLayout>
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="5dp"
android:id="@+id/listView" />
</LinearLayout>
</ScrollView>
Dieses Layout mein List_item.xml ist
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true"
android:background="@color/skyBlue"
>
<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnCount="3"
android:rowCount="3"
android:background="@drawable/border_style"
android:layout_marginTop="5dp">
<TextView
android:id="@+id/id"
android:layout_width="50dp"
android:layout_height="wrap_content"
android:textStyle="bold" />
<TextView
android:id="@+id/description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
/>
<TextView
android:id="@+id/amountBill"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
android:layout_gravity="right"
/>
</GridLayout>
</ScrollView>
Können Sie Ihr Zeilenelementlayout von listview aus teilen? – Opiatefuchs
Opiatefuchs, ich teile schon mein Layout. –
Ich meine dein 'R.layout.list_item' Layout .... – Opiatefuchs