滚动时ListView非常慢

Question

我真的需要帮助，我在应用程序中使用的ListView非常慢，而滚动时我该如何修复它？我降低了图像，使用viewholder但没有什么变化..

我初学安卓）

也得到这样的信息：I /编舞：跳过32帧！应用程序可能在其主线程上做了太多工作。

这里是我的代码

public class asker extends Activity { 
    ListView list; 
    String[] askerbaslik; 
    int[] images = 

      {R.drawable.barbar_icon, R.drawable.okcu_icon, 
        R.drawable.dev_icon, 
        R.drawable.goblin_icon, 
        R.drawable.duvar_kirici_icon, R.drawable.balon_icon, 
        R.drawable.buyucu_icon, R.drawable.sifaci_icon, 
        R.drawable.ejderha_icon, 
        R.drawable.pekka_icon, R.drawable.yavruejder_icon, R.drawable.madenci_icon}; 

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

     Resources res = getResources(); 
     askerbaslik = res.getStringArray(R.array.asker_adlari); 

     list = (ListView) findViewById(R.id.listview); 

     ilyasadapter adapter = new ilyasadapter(this, askerbaslik, images); 

     list.setAdapter(adapter); 
    } 

    class ilyasadapter extends ArrayAdapter<String> { 
     Context context; 
     int[] images; 
     String[] titlearray; 

     ilyasadapter(Context c, String[] titles, int imgs[]) { 
      super(c, R.layout.liste_tasarim, R.id.asker_baslik, titles); 
      this.context = c; 
      this.images = imgs; 
      this.titlearray = titles; 
     } 

     class MyViewHolder { 
      TextView mytitle; 
      ImageView myimage; 

      MyViewHolder(View v) { 

       mytitle = (TextView) v.findViewById(R.id.asker_baslik); 
       myimage = (ImageView) v.findViewById(R.id.asker_icon); 
      } 
     } 


     @Override 
     public View getView(int position, View convertView, ViewGroup parent) { 
      View row = convertView; 
      MyViewHolder holder = null; 

      if (row == null) { 

       LayoutInflater inflater = (LayoutInflater) 
         context.getSystemService(context.LAYOUT_INFLATER_SERVICE); 
       row = inflater.inflate(R.layout.liste_tasarim, parent, false); 
       holder = new MyViewHolder(row); 

       row.setTag(holder); 

       Log.d("test", "creating a new row"); 
      } else { 

       holder = (MyViewHolder) row.getTag(); 

       Log.d("test", "Recycling stuff"); 
      } 

      holder.myimage.setImageResource(images[position]); 
      holder.mytitle.setText(titlearray[position]); 

      return row; 
     } 
    } 
} 

单row.xml

<?xml version="1.0" encoding="utf-8"?> 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:orientation="horizontal" 
android:layout_width="match_parent" 
android:layout_height="match_parent"> 


<ImageView 
    android:layout_marginTop="5dp" 
    android:id="@+id/asker_icon" 
    android:layout_width="100dp" 
    android:layout_height="100dp" 
    android:src="@drawable/barbar_icon" 
    android:background="@drawable/rounded_corner" 

    ></ImageView> 

<TextView 
    android:id="@+id/asker_baslik" 
    android:layout_marginTop="40dp" 
    android:layout_marginLeft="30dp" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="Asker ismi" 
    android:textColor="#ffffff" 
    android:textSize="15dp" 
    android:fontFamily="sans-serif" 
    /> 

    </LinearLayout> 

我的ListView

<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="#455A64" > 
<ListView 
    android:id="@+id/listview" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:divider="#263238" 
    android:dividerHeight="2px" 
    /> 
</RelativeLayout> 

Answer 1

请尝试从列表视图中删除的图标，看看是否有改善性能。您可能正在使用分辨率过高的图像。使用高分辨率图像时，我也注意到了performance anomalies。

让我知道是否有帮助。如果没有，我们可以尝试一些其他的东西。