我正在尝试在每个单元格中使用带有ImageView和TextView的GridView.所以我创建了单元格布局,网格布局,imageAdapter和主要活动,当然,但我不断遇到以下问题：
当我在模拟器上尝试这个时,初始图像和标题会正确显示,但是一旦我向下滚动,一些项目开始变得混乱并且不断变化甚至重复一些时间.
我正在使用2个并行阵列(图像和标题).我尝试使用Log.v函数来查找调用getView时显示的索引和图像,但只能正确分配初始的(可以看到没有滚动).
我通过一遍又一遍地生成视图来解决问题,但这显然不是正确的方法.
这是我正在使用的文件：
网格单元格：
网格视图：
GridActivity :(唯一实现的方法)
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.menu);
GridView gridview = (GridView) findViewById(R.id.grdMenu);
gridview.setAdapter(new ImageAdapter(this));
gridview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterViewImageAdapter：
public class ImageAdapter extends BaseAdapter {
private Context mContext;
private Integer[] mThumbIds = {R.drawable.potencia32x32,R.drawable.detalle_cuenta32x32,R.drawable.solicitud32x32,R.drawable.agregar32x32,R.drawable.cyr_32x32,R.drawable.usuarios,R.drawable.cambio_med64x64,R.drawable.cobranza_ex64x64,R.drawable.convenio_pagos64x64,R.drawable.copiabf64x64,R.drawable.info_cliente64x64,R.drawable.mant_exp64x64,R.drawable.ordenes64x64,R.drawable.reembolsos64x64,R.drawable.seguro64x64,R.drawable.solicitudes64x64,R.drawable.suministro64x64
};
private String[] Caption = {"Consumo","Facturaciones","Solicitudes","Pagos","Cortes y Rcnx","Datos Generales","Cambios de Medidores","Cobranza Externa","Convenio Pagos","Copia Fac. o Bol.","Info. Cliente","Mant. Expediente","Consulta Ordenes","Historia Reembolsos","Seguros","Caracteristicas Suministro"
};
public ImageAdapter(Context c) {
mContext = c;
}
public int getCount() {
return mThumbIds.length;
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
public View getView(int position,View convertView,ViewGroup parent) {
View myView = null;
if(convertView==null)
{
LayoutInflater li = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
myView = li.inflate(R.layout.grdmenu_cell,null);
TextView tv = (TextView) myView.findViewById(R.id.grid_item_text);
Log.v("D:<",String.valueOf(Caption.length) +" y: "+ String.valueOf(position));
tv.setText(Caption[position]);
ImageView iv = (ImageView) myView.findViewById(R.id.grid_item_image);
Log.v("D:<",String.valueOf(mThumbIds.length) +" y: "+ String.valueOf(position));
iv.setImageResource(mThumbIds[position]);
}
else
{
myView = convertView;
}
return myView;
}
}
这是我的第一个问题,如果我犯了任何错误,请告诉我.提前致谢.
最佳答案
我认为错误发生在你的适配器的getView中. ConvertView不会保留通过findViewById()和其他方式访问的资源,只有膨胀的视图.尝试将其更改为以下内容：
public View getView(int position,ViewGroup parent) {
View myView = null;
if(convertView==null)
{
LayoutInflater li = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
myView = li.inflate(R.layout.grdmenu_cell,null);
}else{
myView = convertView;
}
TextView tv = (TextView) myView.findViewById(R.id.grid_item_text);
Log.v("D:<",String.valueOf(Caption.length) +" y: "+ String.valueOf(position));
tv.setText(Caption[position]);
ImageView iv = (ImageView) myView.findViewById(R.id.grid_item_image);
Log.v("D:<",String.valueOf(mThumbIds.length) +" y: "+ String.valueOf(position));
iv.setImageResource(mThumbIds[position]);
return myView;
}
