lopspower

Analyze & Manage Memory on Android Like a Boss

This Blog is all about memory management in Android. It provides information about how you can analyze & reduce memory usage while developing an Android app.

Memory management is a complex field of computer science and there are many techniques being developed to make it more efficient. This guide is designed to introduce you to some of the basic memory management issues that programmers face.

Memory Management in Android

Android is a Linux based operating system. It uses native open source C libraries which power Linux machines. All the basic operating system operations like I/O, memory management and so on are handled by the Linux kernel. Like Java and .NET, Android uses its own run time and virtual machine to manage application memory. Unlike either of these frameworks, the Android run time also manages the lifetime processes. Each Android application runs in a separate process within its own Dalvik instance, relinquishing all responsibility for memo

diegopacheco

 [build.gradle]
 if ( project.hasProperty("myARG") ) {
     // do something
 } else {
    // do something else
 }
 
 [CONSOLE]
 $ gradle -PmyARG=true

emanuelet

/**
 * This class is an example of how to use FirebaseListAdapter. It uses the ExampleObject class to encapsulate the
 * data for each individual chat message
 */
public class ExampleAdapter extends FirebaseListAdapter<ExampleObject> {
    @InjectView(R.id.example_list_item)
    TextView exampleView;

    public DealListAdapter(Query ref, Activity activity, int layout) {
        super(ref, ExampleObject.class, layout, activity);

wwsun

package me.wwsun.list;

import java.util.Iterator;

/**
 *
 * @param <E> is the type of elements in this list
 */
public class MyArrayList<E> implements Iterable<E> {

malalanayake

import java.util.Arrays;

/**
 * Simple ArrayList Implementation for Java Beginners
 * 
 * @author malalanayake
 * 
 */
public class ArrayList {
	private Object[] data;

swenson

Author unknown.

1.) Algorithm Complexity: You need to know Big-O. If you struggle with
basic big-O complexity analysis, then you are almost guaranteed not to
get hired.
For more information on Algorithms you can visit:
http://www.topcoder.com/tc?module=Static&d1=tutorials&d2=alg_index

2.) Coding: You should know at least one programming language really
well, and it should preferably be C++ or Java. C# is OK too, since

tsiege

ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!






\

laaptu

//as per cyrilmottier.com/2012/05/22/the-making-of-prixing-fly-in-app-menu-part-1/
public class SmoothInterpolator extends LinearInterpolator {

		@Override
		public float getInterpolation(float input) {
			return (float) Math.pow(input - 1, 5) + 1;
		}

}

ErikHellman

package com.example.mediaplayersurfaceswitch;

import android.app.Activity;
import android.content.Intent;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

rafali

TransitionDrawable transition = (TransitionDrawable) view.getBackground();
if (toggle) {
	view.startTransition(1200);
} else {
	view.reverseTransition(1200);
}