在加载图片数据时，老是在加载第一张图片，请高手指点迷津：
下面是我的代码：
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState); setContentView(R.layout.goods_gallery);
m_gallery = (GridView) findViewById(R.id.img_text_gallery);
GridView_property(); Intent intent = getIntent();
String arg = intent.getStringExtra("type");
if (arg.equals("hotsale")) {
key = KEYHOTSALE;
title = "热卖商品";
} mData = new ArrayList<HashMap<String, Object>>();
adapter = new GoodsGalleryAdapter(this);
m_gallery.setAdapter(adapter); m_gallery.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
if (mData != null && mData.size() > 0) { Intent it = new Intent(Global.ACTION_MALLGROUP_NAVIGATE);
it.putExtra("launch", ProductDetailActivity.class);
it.putExtra("product",
(String) mData.get(arg2).get(PRODUCTID));
it.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
sendBroadcast(it); }
}
}); m_gallery.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
v.clearFocus();
return false;
}
}); // new a thread{loadData}
refresh(); } /**
* 动态设置gridview的属性
*/
public void GridView_property() {
m_gallery.setNumColumns(12); } private Handler handler = new Handler() { public void handleMessage(android.os.Message msg) { Log.d(TAG, "Handle message " + msg.what);
if (null != waitDlg)
waitDlg.dismiss();
if (MSGLOAD == msg.what) {
m_gallery_product = (ArrayList<MallProductBean>) msg.obj;
updateUI();
}
}
}; private void initData() {
if (null == mData)
mData = new ArrayList<HashMap<String, Object>>();
// mData.clear();// if (m_gallery_product == null)
// return;
for (int i = 0; i < m_gallery_product.size(); i++) {
// Log.v(TAG, "getView0 cache contains " + i);
MallProductBean m = m_gallery_product.get(i);
HashMap<String, Object> map = new HashMap<String, Object>();
map.put(PRODUCTNAME, m.getName());
map.put(PRODUCTPIC, FunctionsUtil.appendImageSize(m.getPicurl(), 195, 260));
map.put(PRODUCTPRICENEW, m.getCurrentprice());
map.put(PRODUCTPRICEOLD, m.getRetailprice());
map.put(TOTALVOLUMS, m.getAmt());
map.put(PRODUCTID, m.getId());
mData.add(map);
}
} public void updateUI() { initData();
adapter.notifyDataSetChanged();
} public void refresh() {
if (waitDlg != null) {
waitDlg.dismiss();
}
waitDlg = ProgressDialog.show(getParent(), null, "请等候...");
new Thread() {
public void run() {
// loadData();
VOProductList tag = MallDao.mallIndexRecommend(key);
if (tag != null) {
ArrayList<MallProductBean> ga = tag.getProductinfo();
handler.sendMessage(handler.obtainMessage(MSGLOAD, ga));
}
}
}.start();
} private final class ViewHolder { public ImageView m_iv_goods_item;
public TextView m_tv_product_name;
public TextView m_tv_goods_new_price; } /** custom adapter */
private class GoodsGalleryAdapter extends BaseAdapter { private LayoutInflater mInflater;
private AsyncImageLoader mIconloader; private Context mContext; public GoodsGalleryAdapter(Context context) {
this.mContext = context; this.mInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mIconloader = new AsyncImageLoader(new ImageCallback() {
// 异步加载图片方法
@Override
public void imageLoaded(Drawable imageDrawable, String imageUrl, Object to) {
ImageView v = (ImageView) m_gallery.findViewWithTag(imageUrl);
if (v != null) {
v.setImageDrawable(imageDrawable);
adapter.notifyDataSetChanged();
} }
});
} @Override
public int getCount() {
return mData == null ? 0 : mData.size(); } @Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
} @Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
} @Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub Log.v(TAG, "getView1 cache contains " + position);
Log.v(TAG, "getView2 cache contains " + convertView);
ViewHolder holder;
if (convertView == null) { convertView = mInflater.inflate(R.layout.goods_gallery_item, null);
holder = new ViewHolder();
holder.m_iv_goods_item = (ImageView) convertView
.findViewById(R.id.iv_goods_list_item);
holder.m_tv_product_name = (TextView) convertView
.findViewById(R.id.tv_goodsname_item);
holder.m_tv_goods_new_price = (TextView) convertView
.findViewById(R.id.tv_goodsprice_new);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
} if (holder != null) {
Log.v(TAG, "getView3 contains " + mData.size());
if (mData != null && mData.size() > 0) {
// if (mData.size() > 4) {
holder.m_tv_product_name.setText((String) mData.get(
position).get(PRODUCTNAME));
holder.m_tv_goods_new_price.setText("¥"
+ String.valueOf((Double) mData.get(position).get(
PRODUCTPRICENEW)));
String url = (String) mData.get(position).get(PRODUCTPIC);
if (url != null && url.length() > 0) {
Log.v(TAG, "getView4 cache contains " + url);
holder.m_iv_goods_item.setTag(url);
Drawable cacheImage = mIconloader.loadDrawable(url,
null);
if (cacheImage == null) {
try {
holder.m_iv_goods_item
.setImageResource(R.drawable.icon);
} catch (OutOfMemoryError e) {
e.printStackTrace();
}
} else {
holder.m_iv_goods_item.setImageDrawable(cacheImage);
// adapter.notifyDataSetChanged();
}
} } } return convertView;
} }
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
return false;
} else {
return super.onKeyDown(keyCode, event);
}
}
}
下面是我的代码：
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState); setContentView(R.layout.goods_gallery);
m_gallery = (GridView) findViewById(R.id.img_text_gallery);
GridView_property(); Intent intent = getIntent();
String arg = intent.getStringExtra("type");
if (arg.equals("hotsale")) {
key = KEYHOTSALE;
title = "热卖商品";
} mData = new ArrayList<HashMap<String, Object>>();
adapter = new GoodsGalleryAdapter(this);
m_gallery.setAdapter(adapter); m_gallery.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
if (mData != null && mData.size() > 0) { Intent it = new Intent(Global.ACTION_MALLGROUP_NAVIGATE);
it.putExtra("launch", ProductDetailActivity.class);
it.putExtra("product",
(String) mData.get(arg2).get(PRODUCTID));
it.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
sendBroadcast(it); }
}
}); m_gallery.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
v.clearFocus();
return false;
}
}); // new a thread{loadData}
refresh(); } /**
* 动态设置gridview的属性
*/
public void GridView_property() {
m_gallery.setNumColumns(12); } private Handler handler = new Handler() { public void handleMessage(android.os.Message msg) { Log.d(TAG, "Handle message " + msg.what);
if (null != waitDlg)
waitDlg.dismiss();
if (MSGLOAD == msg.what) {
m_gallery_product = (ArrayList<MallProductBean>) msg.obj;
updateUI();
}
}
}; private void initData() {
if (null == mData)
mData = new ArrayList<HashMap<String, Object>>();
// mData.clear();// if (m_gallery_product == null)
// return;
for (int i = 0; i < m_gallery_product.size(); i++) {
// Log.v(TAG, "getView0 cache contains " + i);
MallProductBean m = m_gallery_product.get(i);
HashMap<String, Object> map = new HashMap<String, Object>();
map.put(PRODUCTNAME, m.getName());
map.put(PRODUCTPIC, FunctionsUtil.appendImageSize(m.getPicurl(), 195, 260));
map.put(PRODUCTPRICENEW, m.getCurrentprice());
map.put(PRODUCTPRICEOLD, m.getRetailprice());
map.put(TOTALVOLUMS, m.getAmt());
map.put(PRODUCTID, m.getId());
mData.add(map);
}
} public void updateUI() { initData();
adapter.notifyDataSetChanged();
} public void refresh() {
if (waitDlg != null) {
waitDlg.dismiss();
}
waitDlg = ProgressDialog.show(getParent(), null, "请等候...");
new Thread() {
public void run() {
// loadData();
VOProductList tag = MallDao.mallIndexRecommend(key);
if (tag != null) {
ArrayList<MallProductBean> ga = tag.getProductinfo();
handler.sendMessage(handler.obtainMessage(MSGLOAD, ga));
}
}
}.start();
} private final class ViewHolder { public ImageView m_iv_goods_item;
public TextView m_tv_product_name;
public TextView m_tv_goods_new_price; } /** custom adapter */
private class GoodsGalleryAdapter extends BaseAdapter { private LayoutInflater mInflater;
private AsyncImageLoader mIconloader; private Context mContext; public GoodsGalleryAdapter(Context context) {
this.mContext = context; this.mInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mIconloader = new AsyncImageLoader(new ImageCallback() {
// 异步加载图片方法
@Override
public void imageLoaded(Drawable imageDrawable, String imageUrl, Object to) {
ImageView v = (ImageView) m_gallery.findViewWithTag(imageUrl);
if (v != null) {
v.setImageDrawable(imageDrawable);
adapter.notifyDataSetChanged();
} }
});
} @Override
public int getCount() {
return mData == null ? 0 : mData.size(); } @Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
} @Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
} @Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub Log.v(TAG, "getView1 cache contains " + position);
Log.v(TAG, "getView2 cache contains " + convertView);
ViewHolder holder;
if (convertView == null) { convertView = mInflater.inflate(R.layout.goods_gallery_item, null);
holder = new ViewHolder();
holder.m_iv_goods_item = (ImageView) convertView
.findViewById(R.id.iv_goods_list_item);
holder.m_tv_product_name = (TextView) convertView
.findViewById(R.id.tv_goodsname_item);
holder.m_tv_goods_new_price = (TextView) convertView
.findViewById(R.id.tv_goodsprice_new);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
} if (holder != null) {
Log.v(TAG, "getView3 contains " + mData.size());
if (mData != null && mData.size() > 0) {
// if (mData.size() > 4) {
holder.m_tv_product_name.setText((String) mData.get(
position).get(PRODUCTNAME));
holder.m_tv_goods_new_price.setText("¥"
+ String.valueOf((Double) mData.get(position).get(
PRODUCTPRICENEW)));
String url = (String) mData.get(position).get(PRODUCTPIC);
if (url != null && url.length() > 0) {
Log.v(TAG, "getView4 cache contains " + url);
holder.m_iv_goods_item.setTag(url);
Drawable cacheImage = mIconloader.loadDrawable(url,
null);
if (cacheImage == null) {
try {
holder.m_iv_goods_item
.setImageResource(R.drawable.icon);
} catch (OutOfMemoryError e) {
e.printStackTrace();
}
} else {
holder.m_iv_goods_item.setImageDrawable(cacheImage);
// adapter.notifyDataSetChanged();
}
} } } return convertView;
} }
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
return false;
} else {
return super.onKeyDown(keyCode, event);
}
}
}
01-11 07:16:32.183: VERBOSE/GirdViewActivity(4583): OnStart
01-11 07:16:32.245: VERBOSE/GirdViewActivity(4583): OnResume
01-11 07:16:34.764: DEBUG/GirdViewActivity(4583): Handle message 0
01-11 07:16:35.414: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:35.456: VERBOSE/GirdViewActivity(4583): getView2 cache contains null
01-11 07:16:35.476: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:35.476: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:35.514: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:35.514: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:35.534: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:35.534: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:35.555: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:35.555: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:35.555: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:35.555: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:35.564: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:35.604: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:35.604: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:35.604: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:35.604: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:35.604: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:35.604: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:35.624: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:35.676: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:35.676: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:35.676: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:35.684: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:35.694: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:35.694: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:35.694: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:35.694: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:35.726: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:35.726: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:35.744: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:35.744: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:35.774: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:35.774: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:35.774: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:35.784: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:35.784: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:35.794: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:35.794: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:35.804: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:35.804: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:35.804: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:35.804: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:35.816: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:35.824: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:35.835: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:35.835: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:35.835: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:35.864: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:35.864: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:35.894: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:35.894: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:35.914: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:35.914: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:35.928: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:35.928: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:35.934: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:35.934: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:35.934: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:35.954: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:35.984: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:35.984: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:35.984: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:35.984: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:36.004: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:36.004: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:36.004: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:36.004: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:36.034: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:36.034: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:36.034: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:36.034: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
01-11 07:16:36.044: VERBOSE/GirdViewActivity(4583): getView1 cache contains 0
01-11 07:16:36.044: VERBOSE/GirdViewActivity(4583): getView2 cache contains android.widget.RelativeLayout@44f03f30
01-11 07:16:36.044: VERBOSE/GirdViewActivity(4583): getView3 contains 12
01-11 07:16:36.064: VERBOSE/GirdViewActivity(4583): getView4 cache contains http://miugopic.miugo.net/PhotoHome/dfh/海味/310467大糖心鲍（500g）_195x260.JPG
if (v != null) {
v.setImageDrawable(imageDrawable);
adapter.notifyDataSetChanged();
}既然你的imageUrl 都是一样的， 找到的永远只是你的第一个tag为imageUrl 的imageView。所以更新只是第一个。还有一点看不懂holder.m_iv_goods_item.setTag(url);
Drawable cacheImage = mIconloader.loadDrawable(url,
null);
if (cacheImage == null) {
try {
holder.m_iv_goods_item
.setImageResource(R.drawable.icon);
} catch (OutOfMemoryError e) {
e.printStackTrace();
}
} else {
holder.m_iv_goods_item.setImageDrawable(cacheImage);
// adapter.notifyDataSetChanged();
}
}这里你有使用了异步吗？
还有就是 在滑动过程中内存数据是不是会递增？最好把原理给讲下~ 谢谢哈！
Cursor = dbHelper.getData(sql, null); 这里的查询语句 和cursoradapter 有关么？和内存溢出有关么？