Now use File/Save As to give the file a new name – “Practice 2.” Press the Enter Key again to go to the next line. Type your phone number. Use File/Save As and choose a different folder such as Documents or Downloads. Type in a different file name - “Practice 3.” 9. You now have 3 different files in 2 different folders. Lists are saved as simple text files containing the full path to each file on a separate line. Streamline the way you work with files! If you have a Mac, you can use software like Apple Bootcamp, Parallels Desktop, or Oracle VirtualBox to create a Windows environment, and FileList will run fine on your Mac. We released simple file listing tool 'RapidTree' on Mac AppStore 'RapidTree' is a renewed 'RapidList'. Goto “RapidTree” detail page. Lists are saved as simple text files containing the full path to each file on a separate line. Streamline the way you work with files! If you have a Mac, you can use software like Apple Bootcamp, Parallels Desktop, or Oracle VirtualBox to create a Windows environment, and FileList will run fine on your Mac. Create a password-protected ZIP file in OS X. To create a password-protected Zip file in OS X, you can use the Terminal and you don’t need to download any other programs. First, place all of the files that you want to compress into a single folder, and then rename that folder to the name that you want your ZIP file to have. Open the Terminal.
The examples below will increase in number of lines of code and difficulty:
1 line: Output
2 lines: Input, assignment
3 lines: For loop, built-in enumerate function, new style formatting
4 lines: Fibonacci, tuple assignment https://downwup137.weebly.com/casino-extreme-review.html.
5 lines: Functions
6 lines: Import, regular expressions
7 lines: Dictionaries, generator expressions
8 lines: Command line arguments, exception handling
9 lines: Opening files
10 lines: Time, conditionals, from.import, for.else
11 lines: Triple-quoted strings, while loop
12 lines: Classes
13 lines: Unit testing with unittest
14 lines: Doctest-based testing
15 lines: itertools
16 lines: csv module, tuple unpacking, cmp() built-in
18 lines: 8-Queens Problem (recursion)
20 lines: Prime numbers sieve w/fancy generators
21 lines: XML/HTML parsing
28 lines: 8-Queens Problem (define your own exceptions)
33 lines: 'Guess the Number' Game (edited) from http://inventwithpython.com
These all run under Python 3. If you are interested in differences between Python 2 and Python 3, please take a look at the previous version of this page.
CategoryDocumentation
Monkey in the bank casino game. Let us start actual programming with Android Framework. Before you start writing your first example using Android SDK, you have to make sure that you have set-up your Android development environment properly as explained in Android - Environment Set-up tutorial. I also assume that you have a little bit working knowledge with Android studio.
So let us proceed to write a simple Android Application which will print 'Hello World!'.
The first step is to create a simple Android Application using Android studio. When you click on Android studio icon, it will show screen as shown below
You can start your application development by calling start a new android studio project. in a new installation frame should ask Application name, package information and location of the project.−
After entered application name, it going to be called select the form factors your application runs on, here need to specify Minimum SDK, in our tutorial, I have declared as API23: Android 6.0(Mashmallow) −
Pala casino app. The next level of installation should contain selecting the activity to mobile, it specifies the default layout for Applications. Ink2go 1 8 0 m.
At the final stage it going to be open development tool to write the application code.
Before you run your app, you should be aware of a few directories and files in the Android project −
| Sr.No. | Folder, File & Description |
|---|---|
| 1 | Java This contains the .java source files for your project. By default, it includes an MainActivity.java source file having an activity class that runs when your app is launched using the app icon. |
| 2 | res/drawable-hdpi This is a directory for drawable objects that are designed for high-density screens. |
| 3 | res/layout Weather dock 4 5 0 6. This is a directory for files that define your app's user interface. |
| 4 | res/values This is a directory for other various XML files that contain a collection of resources, such as strings and colours definitions. |
| 5 | AndroidManifest.xml This is the manifest file which describes the fundamental characteristics of the app and defines each of its components. |
| 6 | Build.gradle This is an auto generated file which contains compileSdkVersion, buildToolsVersion, applicationId, minSdkVersion, targetSdkVersion, versionCode and versionName |
Following section will give a brief overview of the important application files.
The main activity code is a Java file MainActivity.java. This is the actual application file which ultimately gets converted to a Dalvik executable and runs your application. Following is the default code generated by the application wizard for Hello World! application −
Here, R.layout.activity_main refers to the activity_main.xml file located in the res/layout folder. The onCreate() method is one of many methods that are figured when an activity is loaded.
Whatever component you develop as a part of your application, you must declare all its components in a manifest.xml which resides at the root of the application project directory. This file works as an interface between Android OS and your application, so if you do not declare your component in this file, then it will not be considered by the OS. For example, a default manifest file will look like as following file −
Here <application>.</application> tags enclosed the components related to the application. Attribute android:icon will point to the application icon available under res/drawable-hdpi. The application uses the image named ic_launcher.png located in the drawable folders
The <activity> tag is used to specify an activity and android:name attribute specifies the fully qualified class name of the Activity subclass and the android:label attributes specifies a string to use as the label for the activity. You can specify multiple activities using <activity> tags.
The action for the intent filter is named android.intent.action.MAIN to indicate that this activity serves as the entry point for the application. The category for the intent-filter is named android.intent.category.LAUNCHER to indicate that the application can be launched from the device's launcher icon.
The @string refers to the strings.xml file explained below. Hence, @string/app_name refers to the app_name Slots lv online casino. string defined in the strings.xml file, which is 'HelloWorld'. Similar way, other strings get populated in the application.
Following is the list of tags which you will use in your manifest file to specify different Android application components −
<activity>elements for activities
<service> elements for services
<receiver> elements for broadcast receivers
<provider> elements for content providers
The strings.xml file is located in the res/values folder and it contains all the text that your application uses. For example, the names of buttons, labels, default text, and similar types of strings go into this file. This file is responsible for their textual content. For example, a default strings file will look like as following file −
The activity_main.xml is a layout file available in res/layout directory, that is referenced by your application when building its interface. You will modify this file very frequently to change the layout of your application. For your 'Hello World!' application, this file will have following content related to default layout −
This is an example of simple RelativeLayout which we will study in a separate chapter. The TextView is an Android control used to build the GUI and it have various attributes like android:layout_width, android:layout_height etc which are being used to set its width and height etc. The @string refers to the strings.xml file located in the res/values folder. Hence, @string/hello_world refers to the hello string defined in the strings.xml file, which is 'Hello World!'.
Let's try to run our Hello World! application we just created. I assume you had created your AVD while doing environment set-up. To run the app from Android studio, open one of your project's activity files and click Run icon from the tool bar. Android studio installs the app on your AVD and starts it and if everything is fine with your set-up and application, it will display following Emulator window −
Congratulations!!! you have developed your first Android Application and now just keep following rest of the tutorial step by step to become a great Android Developer. All the very best.
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