How To Start An Android App

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Install Windows Subsystem For Android

How to Make an Android App for Beginners

To install the Windows Subsystem for Android alongside the Amazon Appstore, use these steps:

  • Click the button.
  • Once you complete the steps, you can open the app from the Amazon Appstore, or it’ll also be listed in the Start menu. The app will probably be listed in the “All apps” section if you can’t find it.

    When launching an Android app, it will behave like a regular Microsoft Store app. You can maximize, minimize, and resize windows, and you can also use the mouse and keyboard for input. You can terminate the application by clicking the Close button like any other app, but it might take a little bit of time.

    Creating A New Project

    To make sure that Android Studio and all the SDK components are installed and configured correctly, let’s now try to create and run a new Android Studio project.

    Start by clicking on the Start a new Android Studio project button on the welcome screen.

    Android Studio offers several templates you can use to avoid starting your project from scratch. For now, choose the Empty Activity template and press Next.

    You can think of an activity as a screen of your app. Most apps have several activities, and thus several screens. By choosing the Empty Activity template, you’re creating an app with one screen that has nothing but a “Hello World” label inside it.

    On the next screen, give a name to your project and press the Finish button.

    Android Studio may take a few minutes to prepare the project and download additional dependencies, such as Gradle, which serves as the default build toolkit.

    Once the project’s ready, press Shift-F10 to build and run it. Alternatively, you can open the Run menu and select Run ‘app’.

    If you followed all the steps in this tutorial, the project should build successfully. Furthermore, Android Studio should be able to automatically launch the AVD you created and run the project on it.

    Prototype And Test Your Design

    When it comes to creating a mobile app, there no other choice than to prototype and test your design. Dont attempt to create a perfect design right from the first attempt. In most cases, its simply impossible. Instead, be ready to iterate on your product.

    Having a great Android prototyping tool such as Mockplus in your designer toolbox can make your life easier much easier. Mockplus not only helps you to create an interactive high-fidelity prototype in minutes it also allows you to test the prototype with real users. So, the next time youll have some assumption on how a particular feature/screen/UI element of your product should look like or functioning dont guess it, test it!

    Mockplus is a powerful prototyping tool for Android app designers

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    How To Install Apps

    Apps and connectors are a great way to add specific functions to Teams. They just take a second to install, and you can add them for just yourself or your entire team. There are three places to install apps, and each of them performs a different function.

    The first is in the sidebar, which is customized just for you. If someone else in your organization adds the same app they may share information , but others will only show your files. You can add these by clicking the apps button in the bottom left of the screen.

    The second place to add apps is as a tab, which shows up for everyone in a Team at the top of the page. There are a few default tabs like posts, files, and wiki, but just to the right of those is a plus icon, which is how you can add more. Apps may not look or work exactly the same depending on where theyre added.

    The final place is directly in the chat window, appearing next to options for formatting, emojis, attachments, and more. Just click the more options icon, then select the app to add. If you click more apps, teams will automatically pull up the list with the messaging filter applied.

    Creating A Virtual Device

    How to Create Simple Calculator Android App Using Android ...

    If you have a real Android device handy and want to use it instead of a virtual device, you’re free to skip this step.

    Even though you now have all the tools required to run an Android virtual device, you still need to create one. So open the Configure menu you see near the bottom of the welcome dialog and select the AVD Manager option. In the dialog that pops up, click on the Create Virtual Device… button.

    You’ll now be prompted to select a hardware profile for your virtual device. This profile, among other specifications, decides the screen size, resolution, and pixel density of your AVD.

    To make it easy for you, Android Studio has profiles that emulate various popular phones, such as Pixel, Pixel 2, and Pixel 3 XL. As you may have guessed, the profiles that sport the Google Play icon are ones that can run Google Play. For now, I suggest you choose the Pixel 2 profile and press Next.

    On the next screen, you must specify the version of Android that must be installed on the AVD. You can choose any version you prefer, but you must have that version’s system image available on your computer. So, usually, you’ll have to first click on the button shown beside the version, and then select the version.

    On the final screen of the wizard, give a name to your AVD, and press the Finish button.

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    Send The Count To The Second Fragment

    The Next/Random button was set up by Android Studio to go from the first fragment to the second, but it doesn’t send any information. In this step you’ll change it to send a number for the current count. You will get the current count from the text view that displays it, and pass that to the second fragment.

  • Open FirstFragment.java
  • Find the method onViewCreated and notice the code that sets up the click listener to go from the first fragment to the second.
  • Replace the code in that click listener with a line to find the count text view, textview_first.
  • int currentCount = Integer.parseInt.toString) 
  • Create an action with currentCount as the argument to actionFirstFragmentToSecondFragment.
  • FirstFragmentDirections.ActionFirstFragmentToSecondFragment action = FirstFragmentDirections.actionFirstFragmentToSecondFragment 

    Open The Layout Editor

  • Find and open the layout folder on the left side in the Project panel.
  • Double-click fragment_first.xml.
  • Troubleshooting: If you don’t see the file fragment_first.xml, confirm you are running Android Studio 3.6 or later, which is required for this codelab.

    The panels to the right of the Project view comprise the Layout Editor. They may be arranged differently in your version of Android Studio, but the function is the same.

    On the left is a Palette of views you can add to your app.

    Below that is a Component Tree showing the views currently in this file, and how they are arranged in relation to each other.

    In the center is the Design editor , which shows a visual representation of what the contents of the file will look like when compiled into an Android app. You can view the visual representation, the XML code, or both.

  • In the upper right corner of the Design editor, above Attributes , find the three icons that look like this: These represent Code , Split , and Design views.
  • Try selecting the different modes. Depending on your screen size and work style, you may prefer switching between Code and Design, or staying in Split view. If your Component Tree disappears, hide and show the Palette.
  • Split view:

  • At the lower right of the Design editor you see + and buttons for zooming in and out. Use these buttons to adjust the size of what you see, or click the zoom-to-fit button so that both panels fit on your screen.
  • Use the device menu to view the layout on different devices.
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    Create A Second Activity

  • At the top of the project’s file system tree, right click on “app.”
  • Navigate through to New > Activity > Blank Activity.
  • Change the name of this activity to “SecondActivity”.
  • Make sure you are in the Design view of activity_second.xml.
  • Drag the text box in the upper left of the phone display down to the center as you did on the Main Activity.
  • With the text box still selected, find the “id” field in the Properties menu on the right, and set it to “text2”.
  • Open strings.xml again.
  • Add a new line under “Hello world! Welcome to my app!” that reads “Welcome to the second page!”.
  • Navigate back to activity_second.xml.
  • Add A Textview For The Random Number

    Creating Your First Simple Android App
  • Open fragment_second.xml and switch to Design View if needed. Notice that it has a ConstraintLayout that contains a TextView and a Button.
  • Remove the chain constraints between the TextView and the Button.
  • Add another TextView from the palette and drop it near the middle of the screen. This TextView will be used to display a random number between 0 and the current count from the first Fragment.
  • Set the id to
  • Constrain the top edge of the new TextView to the bottom of the first TextView, the left edge to the left of the screen, and the right edge to the right of the screen, and the bottom to the top of the Previous button.
  • Set both width and height to wrap_content.
  • Set the textColor to , set the textSize to 72sp, and the textStyle to bold.
  • Set the text to “R”. This text is just a placeholder until the random number is generated.
  • Set the layout_constraintVertical_bias to 0.45.
  • This TextView is constrained on all edges, so it’s better to use a vertical bias than margins to adjust the vertical position, to help the layout look good on different screen sizes and orientations. 10. If you get a warning “Not Horizontally Constrained,” add a constraint from the start of the button to the left side of the screen and the end of the button to the right side of the screen.

    Here is the XML code for the TextView that displays the random number:

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    The 7 Steps Of The Android App Launch

  • createAppContext: Loading the application binary into memory
  • makeApplication : Create Application class and init class attributes
  • installContentProvider: Instantiate and call onCreate for content providers
  • newActivity: Create activity class and init class attributes
  • attach: Attach context to the activity
  • performOnCreate: call activity.onCreate method
  • Lets now see in detail all 7 components and how we can measure them.

    Android App Templates And Ui Kits From Codecanyon

    You may have noticed that our app looks very plain and simple. That’s because we’re using the default theme, without applying any styles to our views. CodeCanyon is full of Android UI kits that offer beautiful, hand-crafted styles you can apply to your views.

    The kits generally also have several custom views and layouts. You can refer to the following articles to learn more about them:

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    Way 5 Wipe Cache Partition

    One of the easiest ways to remove all the cache files from your device is to do the task from the recovery mode. You can reboot your device into the recovery mode to then wipe off all the cache files from the device.

    The steps to put your phone into the recovery mode varies with the type of device you have. If you do not want to get into the hassle of finding a way to reboot your device into the recovery mode, you may use a software like ReiBoot for Android that allows you to put your device into the recovery mode with a single click. All you need to do is press a button in the software and it will reboot your device into the recovery mode.

    • Connect your device to your computer. Download and launch the software on your computer, click on the option that says One-Click to Enter Recovery Mode.
    • Once you are in the recovery mode, select the wipe cache partition option to remove all the cache files from your device. That should resolve the Android is upgrading optimizing app stuck issue on your Android device.

    How To Enable Auto

    Android Simple Quiz App Tutorial with Source Code

    If you’re looking for an answer to your question, “How to enable auto start apps in android programmatically?” then, here’s how you can enable an autorun app on android.

    • Go to your phone’s Settings.
    • In the Settings screen, scroll down, and look got the Security feature.

    • In the security menu, look for the Auto-start Management option.

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    Using An Android Autostart App

    There are several free apps on the Google Play store that will help you manage which apps start and don’t start when you turn on your Android device. In 2020 and early 2021, Autostart No Root at has received many great reviews. Keep in mind the popularity of each of these apps waxes and wanes over time, most likely depending on which version of Android the reviewers have and how long it has been since the app was updated to keep up with changes.

    Some apps are free and rely on purchases of their other apps to fund ongoing development others use ads or have premium services that cost a couple of bucks. In any event, search for “autostart free” or “startup manager free” in Google Play to see what’s available for your Android. Read the reviews and give one a try. If it doesn’t work for you, delete it and try another.

    Each of these apps works essentially the same way. Once installed, it gives you a list of apps that are programmed to start as soon as you turn on your Android. Deselect the ones you don’t want to start automatically and select the ones you want to start.

    Task: Add Color Resources

    So far you have learned how to change property values. Next, you will learn how to create more resources like the string resources you worked with earlier. Using resources enables you to use the same values in multiple places, or to define values and have the UI update automatically whenever the value is changed.

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    To Delete A Constraint:

    • In the design view or blueprint view, hold the Ctrl key and move the cursor over the circle for the constraint until the circle highlights, then click the circle.
    • Or click on one of the constrained views, then right-click on the constraint and select Delete from the menu.
    • Or in the Attributes panel, move the cursor over the circle for the constraint until it shows an x, then click it.

    If you delete a constraint and want it back, either undo the action, or create a new constraint.

    How To Make Android Apps By Outsourcing

    Create an App for Android, iOS, Mac & Windows – in 30 MINUTES!

    If you dont want to learn how to make Android apps at all and dont have an in-house development team, hiring an outsider may be the best option.

    Hiring a developer means you can create anything that you would be able to by building the app yourself. However, it does also mean you wont be solely in the driving seat. How well this turns out for you will depend largely on the quality of the developer you end up working with.

    My advice is to see samples of the developers work before hiring them. Ideally, choose someone based locally to make collaboration less difficult. Spend some time prototyping your app layout, and collect examples of apps you like the look of. This will all help you to communicate your ideas clearly with the developer.

    Ultimately, it is important that you relax just a little bit of your control when using an app developer, however. After all, this is their job so they tend to know what theyre talking about!

    As for where to find developers, you can try freelancing sites like Rent-a-Coder or UpWork, or alternatively use an app development agency. A quick Google will yield plenty of results!

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    Set Up Manifest Entries

    App Startup includes a special content provider called InitializationProviderthat it uses to discover and call your component initializers. App Startupdiscovers component initializers by first checking for a < meta-data> entryunder the InitializationProvider manifest entry. Then, App Startup calls thedependencies methods for any initializers that it has already discovered.

    This means that in order for a component initializer to be discoverable by AppStartup, one of the following conditions must be met:

    • The component initializer has a corresponding < meta-data> entry under theInitializationProvider manifest entry.
    • The component initializer is listed in the dependencies method from aninitializer that is already discoverable.

    Consider again the example with WorkManagerInitializer andExampleLoggerInitializer. To make sure App Startup can discover theseinitializers, add the following to the manifest file:

    < provider    android:name="androidx.startup.InitializationProvider"    android:authorities="$.androidx-startup"    android:exported="false"    tools:node="merge"> < !-- This entry makes ExampleLoggerInitializer discoverable. --> < meta-data  android:name="com.example.ExampleLoggerInitializer"          android:value="androidx.startup" /> < /provider> 

    You don’t need to add a < meta-data> entry for WorkManagerInitializer,because WorkManagerInitializer is a dependency of ExampleLoggerInitializer.This means that if ExampleLoggerInitializer is discoverable, then so isWorkManagerInitializer.

    How To Start And Pop Out A Chat

    Channels are great for sharing information with your entire team, but for quick questions to colleagues, chats are the better option. Theyre private, easy to keep organized, and much more likely to get a response than a channel post!

    Heres how to start a Microsoft Teams chat:

  • Open the Chat tab on the left-hand side.
  • Click New Chat at the top of the screen.
  • Enter the persons name and write your message.
  • Hit the send arrow.
  • The steps for creating a group chat are virtually identical. Just click the small arrow on the right-hand side to give the group a name, then enter all participants in the To field. You can also add more people to a one-to-one or group chat by clicking the Add People button. You can even choose whether or not to include the chat history.

    There are a few other things you can do to make chats even more convenient. The first is pinning them by mousing over the chat, clicking the more options icon, then Pin. This will make sure its always at the top of the list.

    Another useful thing to learn is how to pop out a chat in Microsoft Teams. This gives that chat its own window, so you can have more than one chat open at a time. Like above, just click the more options icon, then Pop-out chat.

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