Warum sieht die Liste in Android Listenansicht seltsam aus?

Question

Also ich habe versucht, eine Listview innerhalb des Fragments zu machen, obwohl der Code funktioniert, diese Liste selbst sieht seltsam aus. Here's a picture of it. Ich würde Ihre Hilfe bei der Ermittlung, warum die Liste seltsam aussieht, schätzen.

ussd.java (Fragment)

package layout; 

import android.app.Activity; 
import android.content.Context; 
import android.net.Uri; 
import android.os.Bundle; 
import android.support.v4.app.Fragment; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ListView; 

import com.buckydroid.app.droidcpu.R; 
import com.buckydroid.app.droidcpu.ussdadaper; 
import com.buckydroid.app.droidcpu.ussdz; 
import com.google.android.gms.tagmanager.Container; 

import java.util.ArrayList; 
import java.util.List; 

/** 
* A simple {@link Fragment} subclass. 
* Activities that contain this fragment must implement the 
* {@link ussd.OnFragmentInteractionListener} interface 
* to handle interaction events. 
* Use the {@link ussd#newInstance} factory method to 
* create an instance of this fragment. 
*/ 
public class ussd extends Fragment { 
    // TODO: Rename parameter arguments, choose names that match 
    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER 
    private static final String ARG_PARAM1 = "param1"; 
    private static final String ARG_PARAM2 = "param2"; 

    // TODO: Rename and change types of parameters 
    private String mParam1; 
    private String mParam2; 
    private ListView listView; 
    private ussdadaper ussd; 
    private List<ussdz> ussdlist; 

    private OnFragmentInteractionListener mListener; 

    public ussd() { 
     // Required empty public constructor 
    } 

    /** 
    * Use this factory method to create a new instance of 
    * this fragment using the provided parameters. 
    * 
    * @param param1 Parameter 1. 
    * @param param2 Parameter 2. 
    * @return A new instance of fragment ussd. 
    */ 
    // TODO: Rename and change types and number of parameters 
    public static ussd newInstance(String param1, String param2) { 
     ussd fragment = new ussd(); 
     Bundle args = new Bundle(); 
     args.putString(ARG_PARAM1, param1); 
     args.putString(ARG_PARAM2, param2); 
     fragment.setArguments(args); 
     return fragment; 
    } 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     if (getArguments() != null) { 
      mParam1 = getArguments().getString(ARG_PARAM1); 
      mParam2 = getArguments().getString(ARG_PARAM2); 
     } 
    } 


    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) 
    { 
     View rootView = inflater.inflate(R.layout.fragment_ussd, container, false); 

     listView = (ListView)rootView.findViewById(R.id.listView); 
     ussdlist = new ArrayList<>(); 
     ussdlist.add(new ussdz("*#44336#","Software Version Info")); 
     ussdlist.add(new ussdz("*#44336#","Software Version Info")); 
     ussdlist.add(new ussdz("*#44336#","Software Version Info")); 
     ussdlist.add(new ussdz("*#44336#","Software Version Info")); 
     ussdlist.add(new ussdz("*#44336#","Software Version Info")); 
     ussdlist.add(new ussdz("*#44336#","Software Version Info")); 
     ussdlist.add(new ussdz("*#44336#","Software Version Info")); 
     ussdlist.add(new ussdz("*#44336#","Software Version Info")); 
     ussd = new ussdadaper(getActivity(),ussdlist); 
     listView .setAdapter(ussd); //you should setthe adapter to the listview 
     return rootView; 
    } 


















    // TODO: Rename method, update argument and hook method into UI event 



    @Override 
    public void onAttach(Context context) { 
     super.onAttach(context); 
    } 

    @Override 
    public void onDetach() { 
     super.onDetach(); 
     mListener = null; 
    } 


    public interface OnFragmentInteractionListener { 
     public void onFragmentInteractionHome(Uri uri); 
     public void openHome(View view); 
    } 
    } 

    /** 
    * This interface must be implemented by activities that contain this 
    * fragment to allow an interaction in this fragment to be communicated 
    * to the activity and potentially other fragments contained in that 
    * activity. 
    * <p/> 
    * See the Android Training lesson <a href= 
    * "http://developer.android.com/training/basics/fragments/communicating.html" 
    * >Communicating with Other Fragments</a> for more information. 
    */ 

Adapter

package com.buckydroid.app.droidcpu; 

import android.content.Context; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.BaseAdapter; 
import android.widget.TextView; 

import java.util.List; 


/** 
* Created by BuckyDroid on 14-06-2016. 
*/ 
public class ussdadaper extends BaseAdapter { 
    private Context ussds; 
    private List<ussdz> ussdlist; 

    public ussdadaper(Context ussds, List<ussdz> ussdlist) { 
     this.ussds = ussds; 
     this.ussdlist = ussdlist; 
    } 

    @Override 
    public int getCount() { 
     return ussdlist.size(); 

    } 

    @Override 
    public Object getItem(int position) { 
     return ussdlist.get(position); 
    } 

    @Override 
    public long getItemId(int position) { 
     return position; 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     View v= View.inflate(ussds,R.layout.item_listview,null); 
     TextView ussdcode = (TextView)v.findViewById(R.id.textView1); 
     TextView ussddesc = (TextView)v.findViewById(R.id.textView2); 
     ussdcode.setText(ussdlist.get(position).getUSSD()); 
     ussddesc.setText(ussdlist.get(position).getDescription()); 
     return v; 


    } 
} 

ussdz.java

package com.buckydroid.app.droidcpu; 

/** 
* Created by BuckyDroid on 14-06-2016. 
*/ 
public class ussdz 
{ 
    private int id; 
    private String USSD; 
    private String Description; 

    public ussdz(String description, String s) { 
     Description = description; 
     this.USSD = USSD; 
     this.id = id; 
    } 

    public int getId() { 
     return id; 
    } 

    public void setId(int id) { 
     this.id = id; 
    } 

    public String getUSSD() { 
     return USSD; 
    } 

    public void setUSSD(String USSD) { 
     this.USSD = USSD; 
    } 

    public String getDescription() { 
     return Description; 
    } 

    public void setDescription(String description) { 
     Description = description; 
    } 
} 

item_listview.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="wrap_content" 
    android:background="@android:color/transparent" 
    android:paddingLeft="5dp" 
    android:paddingRight="5dp" 
    android:orientation="vertical" 
    > 

    <LinearLayout 
     android:id="@+id/lyt" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:minHeight="1px" 
     android:gravity="left|top" 
     android:padding="2dp" 
     android:orientation="horizontal" > 

     <TextView 
      android:id="@+id/textView1" 
      android:layout_width="0dp" 
      android:layout_weight="5" 
      android:layout_height="wrap_content" 
      android:textColor="@color/darker_grey" 
      android:gravity="left|top" 
      android:textAppearance="?android:attr/textAppearanceMedium" 
      android:text="Name" 
      android:textStyle="bold"/> 

     <TextView 
      android:gravity="left|top" 
      android:id="@+id/textView3" 
      android:layout_width="wrap_content" 
      android:textAppearance="?android:attr/textAppearanceMedium" 
      android:layout_height="wrap_content" 
      android:textColor="@color/darker_grey" 
      android:paddingLeft="5dp" 
      android:paddingRight="10dp" 
      android:text=":" /> 

     <TextView 
      android:textStyle="bold" 
      android:gravity="left|top" 
      android:id="@+id/textView2" 
      android:layout_width="0dp" 
      android:layout_weight="6" 
      android:layout_height="wrap_content" 
      android:textColor="@color/darker_grey" 
      android:textAppearance="?android:attr/textAppearanceMedium" 
      android:text="Medium Text"/> 
    </LinearLayout> 

</LinearLayout> 

Update:

public ussdz(String description, String s) { 
     Description = description; 
     this.USSD = USSD; //No need to do that, it will be still null 
     this.id = id; //No need to do that, it will be still null 
    } 

so können Sie den SDD-Wert im Konstruktor hinzu:

private int id; 
private String USSD; 
private String description; 

public ussdz(int mId, String mDescription, String mUSSD) { 
    description = mDescription; 
    this.USSD = mUSSD; 
    this.id = mId; 
} 

XML-Datei

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context="layout.ussd"> 

    <!-- TODO: Update blank fragment layout --> 

    <ListView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:id="@+id/listView" 
     android:layout_gravity="center" /> 
</FrameLayout> 

Answer 1

In Ihrem ussdz Objekt fragment Sie nicht die USSD settign werden Und konstruiere ein Objekt wie:

ussdz myObject = new ussdz(1, "description", "4529697");