我现在面临着奇怪的问题。我使用picasso库下载并在listview中显示图像。
我使用target在运行时更改imageview大小。
private List<Target> targets = new ArrayList<>();
列出班级的顶部。
这是完整的getView方法;
@Override
public View getView(final int position, View row, ViewGroup parent) {
final CategoryMoneyViewHolder categoryMoneyViewHolder;
if (getItem(position) instanceof MoneyItem) {
final MoneyItem moneyItem = (MoneyItem) getItem(position);
if (row == null) {
row = layoutInflater.inflate(R.layout.row_category_money, parent, false);
categoryMoneyViewHolder = new CategoryMoneyViewHolder();
categoryMoneyViewHolder.moneyNameTextView = (RDATextView) row.findViewById(R.id.category_money_textview_money_name);
categoryMoneyViewHolder.moneyThumbImageView = (ImageView) row.findViewById(R.id.category_money_imageview_money_thumb);
categoryMoneyViewHolder.detailTextView = (RDATextView) row.findViewById(R.id.category_money_textview_details);
row.setTag(categoryMoneyViewHolder);
} else {
categoryMoneyViewHolder = (CategoryMoneyViewHolder) row.getTag();
}
categoryMoneyViewHolder.moneyNameTextView.setText(moneyItem.getName());
row.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
new MoneyDetailFragment().open(activity, PassingDataKeyConstants.MONEY, moneyItem);
}
});
final String URLString = BaseService.MONEY_PICTURE + moneyItem.getFront_thumb();
Target target = new Target() {
@Override
public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
if (SettingsForEnablesConstants.ENABLE_PICASSO_LOG) {
RDALogger.debug("onBitmapLoaded by : " + position + " " + URLString);
}
RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) categoryMoneyViewHolder.moneyThumbImageView.getLayoutParams();
double screenWidth = RDADeviceHelpers.getScreenWidth(activity) - RDAResourcesHelpers.getDimen(activity, R.dimen._20dp) * 2;
double ratioFloat = screenWidth / bitmap.getWidth();
layoutParams.height = (int) (ratioFloat * bitmap.getHeight());
layoutParams.width = (int) screenWidth;
categoryMoneyViewHolder.moneyThumbImageView.setLayoutParams(layoutParams);
//---------gelen resme gore para gorseli boyutlandirilmasi
categoryMoneyViewHolder.moneyThumbImageView.setImageBitmap(bitmap);
}
@Override
public void onBitmapFailed(Drawable errorDrawable) {
if (SettingsForEnablesConstants.ENABLE_PICASSO_LOG) {
RDALogger.error("onBitmapFailed by :" + URLString);
}
}
@Override
public void onPrepareLoad(Drawable placeHolderDrawable) {
if (SettingsForEnablesConstants.ENABLE_PICASSO_LOG) {
RDALogger.debug("onPrepareLoad by :" + URLString);
}
}
};
targets.add(target);
Picasso.with(activity).load(URLString).into(target);
} else {
}
return row;
}
现在一切都很完美。但我的服务器有sequrity标头来加载图像。所以我需要使用毕加索下载器。这是代码;
final Picasso.Builder builder = new Picasso.Builder(activity);
builder.downloader(new UrlConnectionDownloader(activity) {
@Override
protected HttpURLConnection openConnection(Uri uri) throws IOException {
HttpURLConnection connection = super.openConnection(uri);
for (Map.Entry entry : RequestHelpers.getRequestHeadersMap().entrySet()) {
connection.setRequestProperty(entry.getKey().toString(), entry.getValue().toString());
}
return connection;
}
});
Picasso picasso = builder.build();
picasso.setLoggingEnabled(SettingsForEnablesConstants.ENABLE_PICASSO_LOG);
picasso.load(URLString).into(target);
当我把这个下载程序代码放入适配器时。每个图像在滚动时反复加载。并且卡在滚动中。我不明白为什么以及哪里出错了？
有什么意见吗？
谢谢你们。