Listview Fehler beim Scrollen nach unten

Question

Wenn ich scrolle bis zum Ende der Liste, es wirft einen Fehler, aber wenn nicht scrollen funktioniert alles richtig, bitte helfen Sie mir. Hier ist mein Code:

customadapter.java

public class CustomAdapter extends ArrayAdapter<String> { 

Context c; 
String[] players; 
int[] images; 
LayoutInflater inflater; 

public CustomAdapter(Context context, String[] players, int[] images) { 
    super(context, R.layout.rowmodel, players); 

    this.c = context; 
    this.players = players; 
    this.images = images; 
} 

public class ViewHolder { 

    TextView nameTv; 
    ImageView img; 
} 

@Override 
public View getView(int position, View convertView, ViewGroup parent) { 

    if (convertView == null) { 

     inflater = (LayoutInflater) c.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     convertView = inflater.inflate(R.layout.rowmodel, null); 
    } 

     ViewHolder holder = new ViewHolder(); 

     holder.nameTv = (TextView) convertView.findViewById(R.id.nameTv); 
     holder.img = (ImageView) convertView.findViewById(R.id.imageView); 

     holder.nameTv.setText(players[position]); 
     holder.img.setImageResource(images[position]); 

    return convertView; 
} 

MainActivity.java

public class MainActivity extends ListActivity { 

String[] players={" Ronaldo"," Modric"," Marcelo","Amanda","ola","andrea","girl"}; 
int[]images={R.drawable.ronaldo,R.drawable.modric,R.drawable.marcelo,R.drawable.amanda,R.drawable.ola,R.drawable.andrea,R.drawable.girl}; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    CustomAdapter adapter=new CustomAdapter(this,players,images); 
    setListAdapter(adapter); 
} 

@Override 
protected void onListItemClick(ListView l, View v, int position, long id) { 
    super.onListItemClick(l, v, position, id); 

    Toast.makeText(this,l.getItemAtPosition(position).toString(),Toast.LENGTH_SHORT).show(); 
} 

}

MainActivity.xml

<?xml version="1.0" encoding="utf-8"?> 
 
<RelativeLayout 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" 
 
    android:paddingBottom="@dimen/activity_vertical_margin" 
 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
 
    android:paddingRight="@dimen/activity_horizontal_margin" 
 
    android:paddingTop="@dimen/activity_vertical_margin" 
 
    android:background="#FFF0EEEE" 
 
    tools:context="com.example.qais.lastchance.MainActivity"> 
 

 
    <ListView 
 
     android:id="@+id/android:list" 
 
     android:layout_width="fill_parent" 
 
     android:layout_height="wrap_content" 
 
     android:divider="@android:color/transparent" 
 
     android:dividerHeight="10.0sp"> 
 

 
    </ListView> 
 
</RelativeLayout>

rowmodel.xml

<?xml version="1.0" encoding="utf-8"?> 
 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 
    android:orientation="vertical" android:layout_width="match_parent" 
 
    android:layout_height="match_parent" 
 
    android:background="@drawable/listshape"> 
 

 

 
    <TextView 
 

 
     android:layout_width="wrap_content" 
 
     android:layout_height="wrap_content" 
 
     android:textAppearance="?android:attr/textAppearanceLarge" 
 
     android:text="Cristiano Ronaldo" 
 
     android:id="@+id/nameTv" 
 
     android:layout_gravity="center_vertical" 
 
     android:layout_alignParentTop="true" 
 
     android:layout_alignParentLeft="true" 
 
     android:layout_alignParentStart="true" 
 
     android:layout_marginTop="34dp" 
 

 
     /> 
 

 
    <ImageView 
 
     android:layout_width="100dp" 
 
     android:layout_height="100dp" 
 
     android:id="@+id/imageView" 
 

 
     android:layout_gravity="left" 
 
     android:layout_alignParentTop="true" 
 
     android:layout_alignParentRight="true" 
 
     android:layout_alignParentEnd="true" /> 
 
</RelativeLayout>

Dies ist der Fehler

 
04-25 18:07:10.911 1781-1781/com.example.qais.lastchance E/AndroidRuntime: FATAL EXCEPTION: main 
Process: com.example.qais.lastchance, PID: 1781 
java.lang.OutOfMemoryError: Failed to allocate a 423360012 byte allocation with 11587572 free bytes and 111MB until OOM 
    at dalvik.system.VMRuntime.newNonMovableArray(Native Method) 
    at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method) 
    at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:837) 
    at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:656) 
    at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:1037) 
    at android.content.res.Resources.loadDrawableForCookie(Resources.java:4037) 
    at android.content.res.Resources.loadDrawable(Resources.java:3910) 
    at android.content.res.Resources.getDrawable(Resources.java:1982) 
    at android.content.Context.getDrawable(Context.java:409) 
    at android.widget.ImageView.resolveUri(ImageView.java:758) 
    at android.widget.ImageView.setImageResource(ImageView.java:409) 
    at com.example.qais.lastchance.CustomAdapter.getView(CustomAdapter.java:52) 
    at android.widget.AbsListView.obtainView(AbsListView.java:2826) 
    at android.widget.ListView.makeAndAddView(ListView.java:1932) 
    at android.widget.ListView.fillUp(ListView.java:751) 
    at android.widget.ListView.layoutChildren(ListView.java:1727) 
    at android.widget.AbsListView.onLayout(AbsListView.java:2624) 
    at android.view.View.layout(View.java:16992) 
    at android.view.ViewGroup.layout(ViewGroup.java:5409) 
    at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1077) 
    at android.view.View.layout(View.java:16992) 
    at android.view.ViewGroup.layout(ViewGroup.java:5409) 
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:579) 
    at android.widget.FrameLayout.onLayout(FrameLayout.java:514) 
    at android.view.View.layout(View.java:16992) 
    at android.view.ViewGroup.layout(ViewGroup.java:5409) 
    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1702) 
    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1556) 
    at android.widget.LinearLayout.onLayout(LinearLayout.java:1465) 
    at android.view.View.layout(View.java:16992) 
    at android.view.ViewGroup.layout(ViewGroup.java:5409) 
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:579) 
    at android.widget.FrameLayout.onLayout(FrameLayout.java:514) 
    at android.view.View.layout(View.java:16992) 
    at android.view.ViewGroup.layout(ViewGroup.java:5409) 
    at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2483) 
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2185) 
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1314) 
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7062) 
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:829) 
    at android.view.Choreographer.doCallbacks(Choreographer.java:606) 
    at android.view.Choreographer.doFrame(Choreographer.java:576) 
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:815) 
    at android.os.Handler.handleCallback(Handler.java:739) 
    at android.os.Handler.dispatchMessage(Handler.java:95) 
    at android.os.Looper.loop(Looper.java:145) 
    at android.app.ActivityThread.main(ActivityThread.java:6917) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:372) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199) 

Answer 1

Es ist ein Out of Memory Ausnahme, Ihre Bilder (Drawables Sie versuchen, in die Bildansichten zu laden) sind zu groß.

Answer 2

Als Hinweis recycleView wird dadurch aufgrund der View-Holder-Muster weniger Speicher benötigt. und für Ihre Bilder verwenden Picasso Bibliothek Bild Laden glatter zu machen und Caching

Answer 3

Try this: 

public class CustomAdapter extends ArrayAdapter<String> { 

    Context c; 
    String[] players; 
    int[] images; 
    LayoutInflater inflater; 

    public CustomAdapter(Context context, String[] players, int[] images) { 
     super(context, R.layout.rowmodel, players); 
     inflater = (LayoutInflater) c.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     this.c = context; 
     this.players = players; 
     this.images = images; 
    } 

    public class ViewHolder { 

     TextView nameTv; 
     ImageView img; 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
      ViewHolder holder; 
      View v = convertView; 
      if(v == null){  
       v = inflater.inflate(R.layout.rowmodel, null); 
       // well set up the ViewHolder 
       holder = new ViewHolder();   
       holder.nameTv = (TextView) v.findViewById(R.id.nameTv); 
       holder.img = (ImageView) v.findViewById(R.id.imageView); 
       // store the holder with the view. 
       v.setTag(holder);   
      } 
      else { 
       holder = (ViewHolder) v.getTag(); 
      } 


      holder.nameTv.setText(players[position]); 
      holder.img.setImageResource(images[position]); 

     return v; 
    }