picasso

今天开始接触非关系型数据库的mongoDB，现在将自己做的笔记发出来，供大家参考，也便于自己以后忘记了可以查看。 首先，mongoDB，是一种数据库，但是又区别与mysql，sqlserver、orcle等关系数据库，在优势上面也略高一筹；至于为什么会这么说呢？很简单，我们来举两个例子： 1.在存储上面，非关系型数据库可以更大规模的存储，打个比方，Facebook用的数据库就是非关系型数据库。 2.运用起来更加流畅也是这个数据库的优点，将分布式的特点发挥到极致。 当我查看官方文档的时候，简直要人命，光是一个插入方法都讲了好几条，脑袋都大了，现在我总结一下每一插入方法的特性 db.collection.insert() 1 db.collection.insert() 向集合插入一个或多个文档.要想插入一个文档,传递一个文档给该方法;要想插入多个文档,就可以采用该方法。 例如 db.users.insert( [ { name: "bob", age: 42, status: "A", }, { name: "ahn", age: 22, status: "A", }, { name: "xi", age: 34, status: "D", } ] ) 1234567 如果插入成功就会返回 WriteResult({ "nInserted" : 3 }) 1 如果异常情况

I have the following code to load an image in Picasso, using a drawable for the placeholder to display while the image is downloading. What I want though is an animated spinning progress bar style spinner that animates around and around while the image is loading, like I see in most professional apps. Picasso doesn't seem to support this, only static image drawables. Is there a way to get it working with Picasso or do I have to do something different? Picasso.with(context).load(url) .placeholder(R.drawable.loading) .error(R.drawable.image_download_error) .into(view); DBragion How to have a

So I am trying to use the Picasso Library for image downloading and caching. In order to get the contactUri to pass to Picasso I need to make a query to the Contacts Content Provider . Since I don't want to block the main UI thread to get the contactId, I have put this in an AsyncTask . And once I get that contactId, I make the call to Picasso in the onPostExecute() method of the AsyncTask . However, I am noticing a flickering that shows up when I scroll through my ListView quickly. It seems to me that there is an issue with the ViewHolder since the recycled views are displaying the previous

I am trying to use the picasso library to loading the image store in the mediastore. When I called load(imageview, callback), the picasso call onFail instead of onSuccess. How do I know why the image was not loaded successfully? Use builder: Picasso.Builder builder = new Picasso.Builder(this); builder.listener(new Picasso.Listener() { @Override public void onImageLoadFailed(Picasso picasso, Uri uri, Exception exception) { exception.printStackTrace(); } }); builder.build().load(URL).into(imageView); Edit For version 2.71828 they have added the exception to the onError callback: Picasso.get()

I have a listView with an adapter that contains ImageView of variable size (width and height). I need resize the pictures load with Picasso to the max width of layout and a variable height given by the aspect ratio of the picture. I have checked this question: Resize image to full width and fixed height with Picasso The fit() works but I haven't found nothing to keep the aspect ratio of the picture. This code partially works if I fixed the height in the layout of the adapter: Picasso.with(this.context).load(message_pic_url) .placeholder(R.drawable.profile_wall_picture) .fit().centerInside()

I have a vertical LinearLayout where one of the items is an ImageView loaded using Picasso. I need to rise the image's width to the full device width, and to display the center part of the image cropped by a fixed height (150dp). I currently have the following code: Picasso.with(getActivity()) .load(imageUrl) .placeholder(R.drawable.placeholder) .error(R.drawable.error) .resize(screenWidth, imageHeight) .centerInside() .into(imageView); Which values should I put into screenWidth and imageHeight (=150dp)? You are looking for: .fit().centerCrop() What these mean: fit - wait until the ImageView