Do I need app Manager on my phone?

What is use of manager in Android?

I am not getting its concept.

My doubt is that as a newbie, how manager is very usefull for me?
If I am newbie, what is benefit of writing such codes with the use of manager. An Activity is like an mini-program/user interface. It has something called the 'User Interface Thread' (or UI thread) which only that Activity can access. If another activity calls an AsyncTask that takes a long time to complete, Android has to put that AsyncTask into another thread and create the User Interface Thread again so that the UI (and other activities) can see and manipulate the results from that AsyncTask. What I mean by this is that, when you start an AsyncTask, Android will only let one instance of the UI Thread run that Activity until it finishes, then it will start the next AsyncTask.

What this means is that you cannot manipulate UI elements in an activity from the background thread. You are allowed to do this from the UI Thread, but you should avoid doing it. This is because doing so might result in an exception and stop the UI thread.

Do I need app Manager on my phone?

In a nutshell, here are the key points: You can have your photos automatically saved on Google Photos, but your albums are not transferred to your device - they stay on the computer you use.

You can sync photos to your PC, or export them, by right-clicking the folder of photos you want to send, and choosing Download to Computer. You can upload any new photos that you take from your computer into your collection of memories. Just like that.

There are a few options that you need to consider before jumping in. They include: Why not get a tablet/laptop? If you already have a tablet or laptop with enough internal memory to store 1GB of pictures for your lifetime, then go ahead, use that device instead. I am a fan of having a tablet or laptop around for those 'just need to show this picture' moments and using a phone only when travelling.

B. Is this safe? I have never had any major issues backing up photos to the cloud from my computer (and sometimes I don't bother exporting them to the Cloud). So no.

C. What about security/fear of data theft? No. Google take your photos as part of their business model and are happy to provide your data in return for providing you with more content and services. If you have any concerns, you can encrypt your photos yourself.

D. How often do I need to transfer photos to the Cloud? The amount of photos you transfer varies a little from one photo app to another. Google Photos has a cap of 15,000 megabytes per device. This includes the upload limit of 4.0 megabytes a month per album on top of photos taken by the same device.

It is a bit trickier with the Photo Stream backup option as it takes snapshots whenever a photo is taken. This feature could be useful for those spontaneous trips where you want to grab every photo opportunity or want to capture important shots of people and places - though it is a little slower at backing up on a regular basis than a direct download.

E. Is Photo Stream better than Dropbox? Both tools are great, and both allow for file compression and backup that works across devices. The main difference between the two is how they synchronise your files.