Trending December 2023 # 7 Things You Need To Know About Surveillance Cameras # Suggested January 2024 # Top 12 Popular

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Surveillance cameras vs security cameras, which one should you choose? Turns out, many people believe that surveillance cameras and security cameras are the same. However, there are plenty of differences between them, such as operation, accessibility, purpose, and quality. If you want to know more about surveillance cameras, here are seven things that set them apart:

Surveillance Cameras Have Higher Video Quality

Surveillance cameras are usually better than security cameras when it comes to clearer images, digital zooms or pans, or even personal identification, animal identification, or vehicle identification. They are technologically more complex than security cameras and often require proper management. Surveillance cameras have HD video quality, but some even reach 4k video quality.

The Footage is Displayed in Real-Time Significantly Deter Crime in Public Areas

Surveillance Cameras Are Often Hidden

Security cameras are often visible to employees, but surveillance cameras in public spaces are mostly hidden to deter criminals from trying to damage them. Some examples include the surveillance cameras installed near ATM machines. Criminals know they are there, which deters them from committing a crime, but they don’t know where the camera is to block it.

You Can Access Them From Anywhere

One of the most fun things about surveillance cameras is that you can access them from anywhere you are. Let’s say you go on vacation and want to check up on your business or a public space just out of curiosity. You can do so through your laptop or phone with certain apps or by accessing certain websites that allow you to share the view of public spaces.

Some Surveillance Cameras Can Sense Pheromones

Surveillance Systems Can Detect Motion of Up to 100 Feet

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10 Things You Need To Know About Mt. Gox’s Bitcoin Implosion

How do half a billion dollars vanish into thin air? That seems to be what happened at popular Bitcoin exchange Mt. Gox, which made a a bankruptcy protection filing in Japan last week.

The staggering, unprecedented loss of about 850,000 bitcoins, worth roughly $474 million, has prompted investors, government officials and journalists to scrutinize the Tokyo-based exchange, but clear facts are few. It seems that no one knew exactly what was going on inside Mt. Gox, even CEO Mark Karpeles, who apologized at a press conference for “weaknesses in the system.”

The case remains murky but we’ve taken a stab at answering some of your questions based on what we know so far.

What is Mt. Gox, anyway?

How did it go from bonanza to bust?

Success seems to have bred complacency at the highest levels of Mt. Gox. In June 2011, about $8.75 million in bitcoin was stolen from the exchange through an online attack using stolen passwords. Any security improvements implemented since then were obviously not up to scratch if the latest loss is the result of a massive heist. Anecdotal accounts have suggested a corporate culture that tended toward laissez-faire rather than strict diligence.

Why did Mt. Gox file for bankruptcy?

Mt. Gox filed for bankruptcy protection in Tokyo District Court on Feb. 28, saying it couldn’t account for 750,000 of its customers’ bitcoins and 100,000 of its own, worth as much as $474 million. The company also can’t account for $27.3 million in cash customer deposits.

How do you lose 850,000 bitcoins?

Can you run a company that badly?

Seems like it. A company source who spoke on condition of anonymity told us the code was such a mess it was like “spaghetti,” bugs were routinely ignored and that there was no regime in place to first test changes to the code before implementing them. Karpeles had a firm grip on the programming reins and refused to let developers fix the code, said the source, who also questioned whether there really was a “cold storage,” an offline vault that bitcoin exchanges are supposed to have. According to the leaked business plan, Mt. Gox had a leak in its online hot wallet, which “wiped out” the cold storage, and theft had been happening for years.

What triggered Mt. Gox’s collapse?

Mt. Gox long had problems processing international wire transfers for people who wanted to cash out their bitcoins. On Feb. 7, it halted bitcoin withdrawals while investigating a security flaw called transaction malleability. Bitcoin software experts said Mt. Gox’s highly customized code may have exacerbated that issue. Other bitcoin exchanges also temporarily suspended trading. With no explanation, Mt. Gox’s website went blank on Feb. 25. It filed for bankruptcy three days later, with Karpeles accepting blame with a bow, a Japanese custom acknowledging failure.

Does this mean other exchanges are vulnerable to the malleability flaw too?

Transaction malleability, which allows for transaction IDs to be renamed, has been known in the Bitcoin community since 2011. Yet other exchanges have also been affected. On Feb. 11, for instance, Bitstamp suspended withdrawals blaming a transaction malleability attack, but said it had fixed the problem four days later. The Bitcoin Foundation, an industry trade group, said last month that it is working with core developers to solve the issue.

Can the missing bitcoins be traced?

Bitcoin transactions are recorded in a public ledger called the “blockchain,” which shows movements from one bitcoin address to another. There is no identifying information attached to a bitcoin address showing who is transferring the coins, but it is possible through crowd-sourced data to see what particular addresses a company has previously used to transfer bitcoins. But due to a lack of custom software tools to analyze the blockchain, tracing a chain of transactions can be like following a set of muddy footprints in the rain.

Will depositors get their money or bitcoins back?

At least one class-action suit has been filed in the U.S., with another planned in the U.K. Mt. Gox has said “we need to investigate a huge amount of transaction reports in order to establish the truth.” Due to bitcoin’s complexity, an investigation could take a long time, and international lawsuits are unlikely to proceed quickly. Mt. Gox claims it has US$63.6 million in liabilities. The leaked document describing its supposed future business plans suggests the company may have just slightly over half that figure in assets.

What does this mean for the future of Bitcoin?

Mt. Gox’s viability has long been questioned by users. But the bitcoin community, stung by past thefts and frauds, is largely looking forward, saying it will have little impact on the long-term prospects for the virtual currency. The price of bitcoin has been relatively stable amid the Mt. Gox collapse and is now around $660. The total market capitalization of all bitcoin is roughly $8.3 billion.

Everything You Need To Know About Edge Detection

Edge detection refers to a set of mathematical techniques for detecting edges, or curves in a digital picture when the brightness of the image abruptly changes or, more formally, has discontinuities. Step detection is the issue of identifying discontinuities in one-dimensional signals, while change detection is the problem of finding signal discontinuities across time. In image processing, machine vision, and 

Prewitt Edge Detection

This is a popular edge detector that is used to identify horizontal and vertical edges in pictures.  

Sobel Edge Detection

This makes use of a filter that emphasizes the filter’s center. It is one of the most often used edge detectors, and it reduces noise while also providing distinguishing and edge response.  

Laplacian Edge Detection

The Laplacian edge detectors are different from the edge detectors previously mentioned. Only one filter is used in this technique (also called a kernel). Laplacian edge detection executes second-order derivatives in a single pass, making it susceptible to noise. Before using this approach, the picture is smoothed with Gaussian smoothing to avoid this susceptibility to noise.  

Canny Edge Detection

Edge detection refers to a set of mathematical techniques for detecting edges, or curves in a digital picture when the brightness of the image abruptly changes or, more formally, has discontinuities. Step detection is the issue of identifying discontinuities in one-dimensional signals, while change detection is the problem of finding signal discontinuities across time. In image processing, machine vision, and computer vision , edge detection is a critical technique, especially in the fields of feature identification and extraction. The goal of detecting sharp changes in picture brightness is to record significant events and changes in the world’s characteristics. Discontinuities in picture brightness are expected to correlate to discontinuities in-depth, discontinuities in surface orientation, changes in material characteristics, and fluctuations in scene light given relatively generic assumptions for an image generation model. In an ideal world, applying an edge detector to an image would result in a collection of linked curves that indicate object borders, surface marking boundaries, and curves that correspond to surface orientation discontinuities. Applying an edge detection method to a picture can minimize the quantity of data that has to be processed and therefore filter out information that isn’t as vital while retaining the image’s crucial structural features. If the edge detection stage is successful, the job of understanding the information contained in the original image may be significantly streamlined. However, such perfect edges are not always possible to get from real-life pictures of modest complexity. Edges recovered from non-trivial pictures are frequently impeded by fragmentation, which results in unconnected edge curves, missing edge segments, and false edges that do not correlate to important events in the image, complicating the process of understanding the image data. One of the most basic processes in image processing, image analysis, picture pattern recognition, and computer vision approaches is edge detection. Viewpoint-dependent or viewpoint-independent edges can be retrieved from a two-dimensional picture of a three-dimensional scene. The intrinsic features of three-dimensional objects, such as surface marks and form, are generally reflected by a perspective-independent edge. The geometry of the scene, such as objects occluding one another, is generally reflected by a perspective-dependent edge, which varies as the viewpoint changes. The border between a block of red and a block of yellow, for example, is a typical edge. A line, on the other hand, can be a tiny number of pixels of a variable hue on an otherwise constant backdrop (as can be retrieved by a ridge detector). As a result, there may be one edge on either side of a line in most cases. Edge detection may be done in a variety of ways, with Prewitt edge detection, Sobel edge detection, Laplacian edge detection, and Canny edge detection being some of the most chúng tôi is a popular edge detector that is used to identify horizontal and vertical edges in chúng tôi makes use of a filter that emphasizes the filter’s center. It is one of the most often used edge detectors, and it reduces noise while also providing distinguishing and edge chúng tôi Laplacian edge detectors are different from the edge detectors previously mentioned. Only one filter is used in this technique (also called a kernel). Laplacian edge detection executes second-order derivatives in a single pass, making it susceptible to noise. Before using this approach, the picture is smoothed with Gaussian smoothing to avoid this susceptibility to chúng tôi is the most widely utilized, highly successful, and complicated approach in comparison to many others. It’s a multi-stage method for detecting and identifying a variety of edges. The steps of the Canny edge detection method are shown below. It transforms the picture to grayscale, eliminates noise (since edge detection using derivatives is susceptible to noise), calculates the gradient (which aids in identifying the edge strength and direction), and last, turns the image to grayscale. It employs non-maximum suppression to narrow the image’s edges, a double threshold to detect the image’s strong, weak, and irrelevant pixels, and hysteresis edge tracking to help transform weak pixels into strong pixels only if they are surrounded by strong pixels.

10 Things You Should Know About Nami In One Piece

One Piece primarily revolves around the Straw Hats, and Nami is one of the central characters of the manga and anime series. Oda sensei’s outstanding writing, coupled with Nami’s looks, intelligence, and resourcefulness, make her a fan-favorite character. While fans know a lot about our beloved cat burglar Nami, there are still some hidden and interesting facts about One Piece’s Nami that you might be unaware of. So, we have curated a list of unknown facts about Nami-swannn, including her likes/dislikes, background, and personality.

Spoiler Warning: This article contains spoilers about Nami from the Straw Hat Pirates in One Piece. We suggest you watch the anime and read the manga first to avoid ruining your experience.

1. Nami’s Birthday is a Clever Wordplay

This is indeed a hidden easter egg in One Piece from Oda, but it’s not the only one. One time Oda mentioned that Nami’s phone number is 7373-737373, which also resonates with her name. Now, don’t go calling this number!

2. All of Nami’s Favorite Foods

Nami also likes Oshiruko, a dish from Wano Country that was revealed recently, and she likes fried eggs, sunny side up, cooked with orange sauce. She also enjoys other fruit varieties but Orangette is her least favorite dish. About Nami’s cooking, roasted duck with mikan sauce is her favorite recipe to prepare.

3. Nami Could’ve Been a Cyborg

Image Courtesy – One Piece by Toei Animation Studios (Fandom)

This interesting fact is going to blow your mind for sure. Before Franky, Nami’s earlier designs suggest that she could have been a Cyborg. Yes! You read that right, an earlier sketch of Nami included her having a prosthetic left hand as well as a prosthetic right leg. She carried a big battle-axe in this concept. Whilst the Nami we have in One Piece is uber-cool, the earlier concept would have made her look badass.

4. Nami’s Devil Fruit Powers by Oda

Image Courtesy – One Piece by Toei Animation Studios (Fandom)

Nami is not a devil fruit user, and that’s a known fact. But when Oda was asked if Nami was a devil fruit user, which devil fruit she would have eaten? Well, he replied with an unexpected answer. Oda replied that Nami would have gained the powers of Goro Goro no Mi.

For those unaware, this is Enel’s devil fruit, which is one of the strongest devil fruits in One Piece. If you’re wondering why particularly this devil fruit, it’s because Nami has always been associated with lightning powers. So, this devil fruit would be an instant match for her.

5. Jolly Roger for Nami 6. Nami Cosplay and Oda Connection

Image Courtesy – One Piece by Toei Animation Studios (Fandom)

During Jump Festa 2002, model and actress Chiaki Inaba cosplayed Nami from One Piece. But, little did she know that her performance would lead to a surprising encounter. Yeah, mangaka Oda with Inaba after her performance and was captivated by her charm. Thus, they started dating and decided to tie the knot on November 7, 2004.

So yeah, Oda found his real-life Nami and is blessed with two daughters. It’s an incredible story, right? Oda penning a fictional character, that character coming to life through cosplay, and him finding his soulmate in the process. Another extraordinary fact, but yeah, Nami’s character sure had a butterfly effect on Oda’s life.

7. Nami Invited Chopper Before Luffy

Image Courtesy – One Piece by Toei Animation Studios (Fandom)

Everyone knows that when it comes to the addition of new members to the Straw Hat Pirates in One Piece, Luffy is generally the one who invites everyone to his crew. But something special transpired on Drum Island.

8. Debut in the Anime is Different from Manga

It’s a common misconception among many fans that Nami was Luffy’s first crewmate. Zoro is the first person Luffy met, so he will always be his initial companion.

9. This is Nami’s Real-Life Job

Image Courtesy – One Piece by Toei Animation Studios (Twitter)

In an SBS, author Oda mentioned that if the One Piece world was based on today’s real-life world, Nami would originate from the country, Sweden. He further added that if the Straw Hats didn’t go with the choice of Pirates, Nami would now be working as a childcare worker. I mean, Nami has an affinity towards children, so this job would suit her personality, right? So, this is one of the most intriguing facts about Nami.

10. What Nami Will Look Like When She Gets Old

Image Courtesy – One Piece by Toei Animation Studios (Fandom)

Nami is the most popular female character in One Piece, and it’s natural for fans to raise many questions about her. In one such case, Oda answered the question of how would Nami look through different ages with two possible pictures. You can see the alternate possibilities of Nami in her old age, as envisioned by Oda sensei.

Frequently Asked Questions

Building Your Android Ui: Everything You Need To Know About Views

What is a View, exactly?


<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Hello World!" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent"


//Create a TextView programmatically// TextView tv = new TextView(getApplicationContext()); LayoutParams lp = new LinearLayout.LayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); tv.setLayoutParams(lp); tv.setText("Hello World!"); rl.addView(tv); } }

Note that you may be able to declare your app’s default layout in XML, and then modify some of its properties at runtime.

Working with Views: Common XML attributes

When creating a View, you’ll need to define various View properties, using XML attributes. Some of these attributes will be unique to that particular View, but there are a number of XML attributes that you’ll encounter over and over again, regardless of the kind of View you’re working with.

Identifying your Views

Every View must have an integer ID that uniquely identifies that particular View. You define integer IDs in your layout files, for example:



The + symbol signifies that this is a new name that must be created and added to your project’s chúng tôi file.

When you need to work with a View, you can reference it using its View ID. Typically, you’ll reference a View by creating an instance of that View object in your Activity’s onCreate() method, for example:


TextView myTextView = (TextView) findViewById(;

The ID integer technically doesn’t need to be unique throughout the entire tree, just within the part of the tree you’re searching. However, to avoid conflicts and confusion it’s recommended that you use completely unique View IDs, wherever possible.

Layout parameters: Width and height

XML attributes that start with “layout_” define a View’s layout parameters. Android supports a variety of layout parameters, but as a minimum you must define a width and height using the layout_width and layout_height attributes.

Android devices have screens of varying dimensions and pixel densities, so 10 pixels doesn’t translate to the same physical size across every device. If you define a View’s width and height using exact measurements, then this can result in user interfaces that only display and function correctly on devices with specific screens, so you should never use any exact measurements when creating your Views.

Instead, you can define a View’s width and height, using any of the following relative measurements:

wrap_content. This View should be just big enough to display its content, plus any padding.

match_parent. This View should be as big as its parent ViewGroup will allow.

dp. If you need more control over a View’s sizing, then you can provide a density-independent pixel measurement, for example android:layout_width=”50dp.” Note that one dp is roughly equal to one pixel on a “baseline” medium-density screen.

sp. If you want to size text using a density-independent pixel measurement, then you should use scalable pixels (sp), for example: android:textSize=”20sp.” Scalable pixels ensure that your app’s text respects the device’s selected text size, so your text will appear bigger on devices that are set to display Large text, and smaller on devices that are set to display Small text.

Give your content some breathing space!

android:padding. Adds extra space to all four edges. If you define a android:padding value, then it’ll take precedence over any edge-specific values, such as paddingLeft and paddingTop, but it won’t override paddingStart or paddingEnd.

android:paddingBottom. Adds extra space to the bottom edge.

android:paddingEnd. Adds extra space to the end edge.

android:paddingHorizontal. Adds extra space to the left and right edges. If you define a android:paddingHorizontal value then it’ll take precedence over paddingLeft and paddingRight, but not paddingStart or paddingEnd.

android:paddingLeft. Adds extra space to the left edge.

android:paddingRight. Adds extra space to the right edge.

android:paddingStart. Adds extra space to the start edge.

android:paddingTop. Adds extra space to the top edge.

android:paddingVertical. Adds extra space to the top and bottom edges. If you define a android:paddingVertical value, then it’ll take precedence over paddingTop and paddingBottom.

Margins: Adding space around your Views

android:layout_margin. Adds extra space to the left, top, right and bottom sides of a View, for example android:layout_marginRight=”10dp.” If you define a layout_margin value, then it’ll take precedence over any edge-specific values.

android:layout_marginBottom. Adds extra space to the bottom side of the View.

android:layout_marginEnd. Adds extra space to the end side of the View.

android:layout_marginHorizontal. Adds extra space to the left and right sides of the View. Declaring a layout_marginHorizontal value is equivalent to declaring a layout_marginLeft and a layout_marginRight value. A layout_marginHorizontal value will take precedence over any edge-specific values.

android:layout_marginLeft. Adds extra space to the left side of the View.

android:layout_marginRight. Adds extra space to the right side of the View.

android:layout_marginStart. Adds extra space to the start side of the View.

android:layout_marginTop. Adds extra space to the top side of the View.

android:layout_marginVertical. Adds extra space to the top and bottom sides of the View. Declaring a layout_marginVertical value is equivalent to declaring a layout_marginTop and a layout_marginBottom value. A layout_marginVertical value will take precedence over any edge-specific values.

What Android Views can I use?

Now we’ve covered some common layout attributes, let’s take a closer look at some of the Views that are provided as part of the Android SDK.

Displaying text, with TextViews


<TextView android:id="@+id/hello_world" android:layout_height="wrap_content" android:layout_width="wrap_content"


public class MainActivity extends Activity { protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final TextView helloWorldTextView = (TextView) findViewById(; helloWorldTextView.setText(R.string.new_text); } }

You can also style your text, using elements such as android:textColor, android:fontFamily, and android:textStyle, which has possible values of bold, italic, and bolditalic.

EditTexts: Creating editable, interactive text


<EditText android:id="@+id/phoneNumber" android:layout_width="fill_parent" android:layout_height="wrap_content"


android:inputType= Displaying PNGs, JPGs and GIFs


<ImageView android:id="@+id/myImage" android:layout_width="wrap_content" android:layout_height="wrap_content"

In Asset type, select Clip Art.

Select the Clip Art button, which displays the Android logo by default.

Choose any of the Material design icons; I’m using “done.”

Open your project’s drawable folder and you should see a new XML file that defines your chosen Material icon as a vector drawable. Here’s the contents of my vector drawable resource:

android:width="24dp" android:height="24dp" android:viewportWidth="24.0" <path android:fillColor="#FF000000" Buttons and ImageButtons


<Button android:layout_width="wrap_content" android:layout_height="wrap_content"


<ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content"

android:drawableLeft. Position the drawable to the left of the text.

android:drawableRight. Position the drawable to the right of the text.

android:drawableStart. Position the drawable to the start of the text.

android:drawableEnd. Position the drawable to the end of the text.

android:drawableTop. Position the drawable above the text.

android:drawableBottom. Position the drawable below the text.

Here, we’re creating a button_icon drawable and placing it at the start of the Button’s button_label text:


<Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/button_label"


<Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/button_label"


public void displayToast(View view) { Toast.makeText(MainActivity.this, "Your Message", Toast.LENGTH_LONG).show(); } Give your users options, with CheckBoxes


<CheckBox android:id="@+id/yes" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/yes" boolean checked = ((CheckBox) view).isChecked(); switch(view.getId()) { case if (checked) else Break; case if (checked) Views and ViewGroups: Creating RadioButtons

RadioButtons allow the user to choose from a set of mutually-exclusive options, such as the Agree/Disagree buttons commonly found on Terms and Conditions forms.

android:layout_width="match_parent" android:layout_height="wrap_content" <RadioButton android:id="@+id/radio_confirm" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/confirm" <RadioButton android:id="@+id/radio_deny" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/deny" boolean checked = ((RadioButton) view).isChecked(); switch(view.getId()) { case if (checked) Break; case if (checked) Spinner

A data source that supplies your Spinner with some information; I’ll be using a simple String Array.

An ArrayAdapter that converts your data into View items, ready to be displayed in your Spinner.

<LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" <Spinner android:id="@+id/location_spinner" android:layout_width="fill_parent"

Create an ArrayAdapter from the String Array, using the createFromResource() method.

Specify a layout resource that defines how the user’s chosen item should appear in the Spinner. Android provides a simple_spinner_item layout that you should use unless you specifically require a custom layout.

Use setDropDownViewResource(int) to specify which layout the Adapter should use for the Spinner dropdown menu. Once again, Android provides a ready-made layout (simple_spinner_dropdown_item) that should be suitable for most projects.

Apply the Adapter to your Spinner, by calling setAdapter().

Here’s my completed code:


Spinner spinner = (Spinner) findViewById(; R.array.location_array, android.R.layout.simple_spinner_item); adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); spinner.setAdapter(adapter);

The Spinner will receive an onItemSelected event every time the user selects an item from the dropdown. To process this event, you’ll need to use the AdapterView.OnItemSelectedListener interface to define an onItemSelected() callback method.

In the following code, I’m displaying a toast every time onItemSelected() is invoked, and incorporating the name of the newly-selected item into my toast. I’m also defining a onNothingSelected() callback method, as this is also required by the AdapterView.OnItemSelectedListener interface.

Here’s the completed Activity:


import; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Spinner; import android.widget.Toast; public class MainActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Spinner spinner = (Spinner) findViewById(; spinner.setOnItemSelectedListener(this); R.array.location_array, android.R.layout.simple_spinner_item); adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); spinner.setAdapter(adapter); } int pos, long id) { Toast.makeText(parent.getContext(), "You've selected n" + parent.getItemAtPosition(pos).toString(), Toast.LENGTH_LONG).show(); } @Override } }

You can download this complete project from GitHub.

ListViews: Displaying your data as scrollable lists

android:orientation="vertical" android:layout_width="fill_parent" <ListView android:layout_width="fill_parent" android:layout_height="fill_parent"


import; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.os.Bundle; import android.widget.ListView; import android.view.View; import android.widget.Toast; public class MainActivity extends Activity { String[] countryArray = {"Argentina" , "Armenia", "Australia", "Belgium" ,"Brazil" ,"Canada" , "China" , "Denmark" , "Estonia" , "Finland" , "France" , "Greece" , "Hungary" , "Iceland" , "India" , "Indonesia" , "Italy" , "Japan" , "Kenya" , "Latvia"}; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final ListView listView = (ListView)findViewById(; listView.setAdapter(adapter); @Override Toast.makeText(parent.getContext(), "You've selected n" + parent.getItemAtPosition(position).toString(), Toast.LENGTH_LONG).show(); } } ) ; }}

You can download this completed ListView project from GitHub.

Designing unique experiences: Creating custom Views Wrapping up

7 Hidden Google Pixel Features You Need To Know And Try

Google’s Pixel lineup comes with a plethora of impressive functions, but some are easier to find and activate than others. The coolest bonus features are hiding just beneath the surface. This list examines the most intriguing.

Whether you’ve just received a new Pixel for Christmas or simply want to learn more about your phone, these features are guaranteed to enhance your user experience.

Note for this tutorial we used a Pixel 4a running the latest Android 11 version.

1. Know What’s Playing

Now whenever music is playing nearby, the Pixel will be able to pick up and identify the sound waves, then show you which track is playing on your lockscreen. Pretty handy!

2. Add Captions to Any Audio

To test this out, open a YouTube video on your device and press play. You should start seeing the captions appear underneath. You can resize or reposition the caption box on the screen according to your needs. Note that at this moment, the feature works only for English language audio, but Google says more languages will be added in the near future.

Under Live Caption, you’ll find additional options – for example, Caption calls. This service provides live captions when you’re on the phone with someone. It’s enabled by default, although your Pixel will ask you if you want captions every time you get a call unless you instruct it otherwise. If you don’t want this, you can turn the feature off from here.

3. Silence Notifications When You Place Your Phone Down

Need to focus on something and don’t want any distractions? The Pixel offers an easy solution to get some peace and quiet. Activate the “Flip to Shhh” option to trigger a Do Not Disturb mode, which silences notifications and other distractions whenever your phone is face down on a flat surface.

4. View Notifications Using Your Fingerprint

If you often use your phone one-handed, you’re going to like this trick. It allows you to view notifications without having to swipe your finger from the top of the display. Instead, you can swipe on your fingerprint sensor at the back of the phone, which is much more comfortable when you don’t have both hands free.

To view your notifications, swipe down on the sensor. Alternatively, if you wish to close them, swipe up.

5. Take Advantage of the Built-in VPN

Connecting to unsecured Wi-Fi networks is quite a dangerous affair, but Pixel owners have a set of tools in place that can protect them from such unpleasantness.

Once you do so, Google sends the Wi-Fi assistant over to notify you that in order to protect your privacy on public Wi-Fi, your data will be transmitted through a secure VPN, courtesy of Google. Tap on the “Got it” button to finally turn the feature on.

The option is on all Pixel and Nexus devices running Android 5.1 and above. According to Google, it’s currently available in select countries, including the U.S., Canada, Denmark, Faroe Islands, Finland, Iceland, Mexico, Norway, Sweden and the UK.

For those with Google Fi, the Wi-Fi assistant is also available in Austria, Belgium, France, Germany, Greece, Ireland, Italy, Netherlands, Portugal, Spain and Switzerland.

6. Create Custom Themes and More

Here you can select from the numerous styles available or create your own by tapping on the Custom button. Pick your fonts and select which type of icon pack you’d like to have, then finish by selecting the highlight color and shape of icons.

7. Be Prepared in Case of Emergency

Newer Pixel models come with an app called Safety pre-installed. This service lets you set an emergency contact who will be allowed access to your phone without having to unlock it. You can also add vital information in the app, such as any allergies you may be suffering from, medications you are on or whether you’re an organ donor.

You can also enable automatic crash detection, a feature which alerts emergency responders, as well as your contacts, that you’ve been in an accident. Right now the option only works for owners of the Pixel 3 (and above) who live in the U.S., U.K., and Australia.

If you’re looking for some additional apps to install on your Pixel, you may want to consult our list of the best Android file managers to help you organize everything or check out the best weather apps that deliver comprehensive forecasts at your fingertips.

Alexandra Arici

Alexandra is passionate about mobile tech and can be often found fiddling with a smartphone from some obscure company. She kick-started her career in tech journalism in 2013, after working a few years as a middle-school teacher. Constantly driven by curiosity, Alexandra likes to know how things work and to share that knowledge with everyone.

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