Layouts, organize our views The prerequisite for this tutorial is the knowledge of layouts resources, allowing us to describe our views in Android. Let's start to see now, the main components, also called Widgets, that will allow us to organize our views in different ways. LinearLayout This container will organize its elements in line, horizontal or [...]
Read MoreToday we will discover a new way of making menus in Android. Menu: Bottom Navigation Bar Our new menu is called Bottom Navigation Bar. And you will see that this name represents very well the graphics rendering. Menu: Bottom navigation Bar kotlin java As you can see in the picture above: the menu is at the bottom [...]
Read MoreIntroduction to SharedPreferences (kotlin/java) Save items – SharedPreferences (kotlin/java) Under Android, it is common to want to save an element, for example, the name of the connected user, or for example a string list. We have in this case several methods: SharedPreferences Write to a file Save to a database I will not go into the details [...]
Read MoreA fundamental activity is to be able to detect when the user selects or touches the touch screen. Issue: Develop a program that draws a circle in the 100,100 coordinate. When another part of the touch screen is pressed, move the circle to that coordinate. 1 - We created a project called: Proyecto043 We delete the [...]
Read MoreTo display a jpg file, png etc. We have in the Canvas class a method called drawBitmap. Issue: Display the contents of a jpg file on the screen knowing it has a size of 250 pixels wide by 200 high. 1 - We created a project called: Proyecto042 We delete the TextView that automatically adds the [...]
Read MoreIf we want to have text that is not horizontal, we must create a path indicating the points where the text will pass. 1 - We created a project called: Proyecto041 We delete the TextView that automatically adds the Android Studio and define the ConstraintLayout id with the value: layout1: Now we encode the [...]
Read MoreWe can build applications and incorporate external True Type fonts. For this, we will implement an application that shows a text with an external source. 1 - We created a project called: Proyecto040 We delete the TextView that automatically adds the Android Studio and define the ConstraintLayout id with the value: layout1: First we have [...]
Read MoreAnother resource that allows the Canvas class is to plot text. 1 - We created a project called: Project039 We delete the TextView that automatically adds the Android Studio and define the ConstraintLayout id with the value: layout1: Now we encode the class in Kotlin where all logic is found: package com.coding180.project039 import android.content.Context [...]
Read MoreIssue: Paint the white background and draw 10 circles growing from the middle of the screen. 1 - We created a project called: Projecto037 We delete the TextView that automatically adds the Android Studio and define the ConstraintLayout id with the value: layout1: Now we encode the class in Kotlin where all logic is [...]
Read MoreIssue: Draw an oval that occupies the entire screen and a circle inside it. 1 - We created a project called: Proyecto038 We delete the TextView that automatically adds the Android Studio and define the ConstraintLayout id with the value: layout1: Now we encode the class where the whole logic is: package com.coding180.project0038 import [...]
Read MoreIssue: Paint the white background and draw a series of rectangles with different styles. 1 - We created a project called: Proyecto036 We delete the TextView that automatically adds the Android Studio and define the ConstraintLayout id with the value: layout1: Now we encode the class where the whole logic is: package com.coding180.project036 import [...]
Read MorePaint the yellow background and draw a series of lines with different styles. 1 - We created a project called: Project034 We delete the TextView that automatically adds the Android Studio and define the ConstraintLayout id with the value: layout1: Now we encode the class where you find all the logic to paint the [...]
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