Tag Archives: WeakReference

Simple Job Scheduler Demo in Android

Android helps us to schedule jobs in an efficient way. Android has a built in Job scheduler for this. Lets see how this is done. Before that lets see what google has to say about Job Scheduling. These are the normal tasks an application does : Updating network resources. Downloading information. Updating background tasks. Scheduling system service calls.… Read More »

What are weak references? How it can be used to avoid memory leaks?

Weak reference objects, which do not prevent their referents from being made finalizable, finalized, and then reclaimed. Weak references are most often used to implement canonicalizing mappings. Suppose that the garbage collector determines at a certain point in time that an object is weakly reachable. At that time it will atomically clear all weak references to that object… Read More »

Faster Loading images in GridViews or ListViews in Android using Menory Caching, Complete implemenation with sample code.

Hi all This example shows you how to load large images in the gridview without any lag or without outofmemory error. This sample application uses the LruCache to hold the images. A cache that holds strong references to a limited number of values. Each time a value is accessed, it is moved to the head of a queue.… Read More »

What is a Memory Heap Size in android? and how can use Bitmap Efficiently?

Memory Heap Size Android is a full multitasking system so it’s possible to run multiple programs at the same time and obviously each one can’t use all of your device memory. For this reason there is a hard limit on your Android application’s heap size: if your application needs to allocate more memory and you have gone up… Read More »