By default, Android Studio builds the debug version of app, which is intended for use only during development, when you click Run. To change the build variant, go to Build > Select Build Variant in the menu bar. Select Build Variant menu item will be grayed out if project-level build.gradle [...]
To access a shared folder in Ubuntu installed in VirtualBox (installed on Windows), follow below steps Start VirtualBox Start the Ubuntu Install the extension pack for VirtualBox. Devices > Insert guest additions CD image Add yourself into to the group 'vboxsf' # Get user id echo $USER # Check vboxsf [...]
Cut in Terminal Ctrl + Shift + X. Copy in Terminal Ctrl + Shift + C Paste in Terminal Ctrl + Shift + V Autocomplete in Terminal Tab Open Terminal Ctrl + Alt + T Install synaptic sudo apt install synaptic
Introduction postDelayed() causes the runnable to be added to the message queue, to be run after the specified amount of time elapses. The runnable will be run on the thread to which this handler is attached. This API can be accessed from Handler.postDelayed(Runnable r, long delayMillis) View.postDelayed(Runnable action, long delayMillis) [...]
setContentView Activity has one ViewRoot and usually one Window attached to it. Activity is used for screen display the entire Window. Views are attached to this Window. Every Window has a Surface and Surface uses Canvas to draw on the surface. setContentView(View) is a method exclusively available for Activity. Internally it calls [...]
Introduction A style (similar to stylesheets in web design) is a collection of attributes that specify the appearance for a single View. It can specify attributes such as font color, font size, background color, and much more. A theme is a type of style that's applied to an entire app, [...]
This error may come when using Intent, and compiler throws above error. Possible solution for the above are Check the import statements at the top and make sure it includes the line: import android.content.Intent; Make sure both Activities are defined in your Manifest file. Intent intent = new Intent(this, NextActivity.class); [...]
android:layout_weight assigns weight to the children of LinearLayout. For example, if there are three child items within the LinearLayout, then the space assigned will be in proportion to the weight which means the child with larger weight will be allow to expand more. Be sure to set the layout_width to 0dp or your [...]
RelativeLayout is a view group that displays child views in relative positions. The position of each view can be specified as relative to sibling elements (such as to the left-of or below another view) or in positions relative to the parent RelativeLayout area (such as aligned to the bottom, left or center). Center [...]
Introduction A Fragment is a piece of an application's user interface or behavior that can be placed in an Activity. Interaction with fragments is done through FragmentManager. Fragments must be embedded in activities; they cannot run independently of activities. Like an Activity, a Fragment has its own lifecycle. An Activity [...]