<ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="drawable/icecream_circle" android:onClick="orderIcecream"/> Where is the error in this program?

android:src='drawable/icecream_circle'

It is a circular button that appears to float above the layout.

Floating action button (FAB)

It occurs when a user places one or more fingers on the touchscreen, and the app interprets that pattern of touches as a gesture, such as a tap, touch & hold, double-tap, fling, or scroll.

Touch Gesture

These are interactive elements in the app's UI that accept data input.

Input controls

It is used for entering and modifying text.

EditText

Which syntax is correct in creating a EditText?

It is used for selecting one or more options.

Check Box

Which is the CORRECT syntax in creating a checkbox?

It restricts the user to select only one (1) option from a set.

Radio Button

<RadioGroupComponent android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"> <RadioButton android:id="@+id/radio_pirates" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/pirates" android:onClick="onRadioButtonClicked"/> <RadioButton android:id="@+id/radio_ninjas" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/ninjas" android:onClick="onRadioButtonClicked"/> </RadioGroupComponent> Which is the error in this RadioButton?

This is a drop-down menu for selecting only one (1) option.

Spinner

Which is the correct syntax for creating a string array in an xml file?

<resources> <string-array name="language_array"> <item>English</item> <item>Filipino</item> <item>Spanish</item> <item>Others</item> </string-array> </resources>

Which is the correct syntax in creating a spinner layout?

Where's the error in this statement? String text = mySpinner.getSelecteditem().toString();

getSelecteditem()

It lets the user change a setting between two (2) states.

Toggle Button

Which is the correct syntax in creating a toggle button

A type of toggle button for Android 4.0+ that provides a slider for selection.

Switch

Which is the correct syntax for creating a switch?

It is dragged to the left or right to indicate a current progress level.

SeekBar

Which is the correct syntax for creating a SeekBar?

Which is the correct syntax that stores the progress of the SeekBar in an int variable?

int status = mySeekBar.getProgress();

It occurs when the user interacts with an input control or item in the user interface.

Event

It is an interface in the View class that contains a single callback method. These methods will be called when the View to which the listener has been registered is triggered by user interaction with the item in the UI

Event Listener

"When the user either touches or focuses upon the item" What callback method is being described?

onClick()

"When the user either touches or focuses upon the item for a second" What callback method is being described?

onLongClick()

"When the user is focused on the item and presses or releases a hardware key on the device" What callback method is being described?

onKey()

"When the user performs an action qualified as a touch event (a press, a release, or any movement gesture on the screen)" What callback method is being described?

onTouch()

public void onCheckBoxClicked(View view) { boolean checked = ((CheckBox) view).checked(); switch(view.getId()) { case R.id.checkbox1: if (checked) // Actions here else // Actions here break; case R.id.checkbox2: if (checked) // Actions here else // Actions here break; } } Which is incorrect in this code?

boolean checked = ((CheckBox) view).checked();

It is a graphic that can be drawn to the screen.

Drawable

This class is used for adding rich images in an app with a minimal impact on its performance.

Drawable Class

It is a modern image format developed by Google that provides superior lossless and lossy compression for images on the web

WebP

SELECT ALL image formats that Android Supports

WebP, JPG/JPEG, GIF, PNG, BMP

Which of the following is NOT part of the recommended image formats?

GIF

Images should be saved in what directory?

app/src/main/res/drawable

Which is the correct syntax to display a drawable in XML

Which is the correct syntax to use an image in Java?

ImageView img = new ImageView(this); img.setImageResource(R.drawable.ice_cream);

Which is the correct syntax to match the bounds of the image with the dimension of the drawable?

img.setAdjustViewBounds(true); img.setLayoutParams(new ViewGroup.LayoutParams( ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));

Which is the correct syntax to add the image to the layout and set the layout as the content view:

ConstraintLayout cl = new ConstraintLayout(this); cl.addView(img); setContentView(cl);

It is a collection of attributes that define the look and format of a view

Style

It refers to the styles that Android provides.

Platform Styles

To create a style, add a <style> element inside a <resources> element in any XML file located in what folder?

values folder inside the project's res folder.

Which is NOT included in a <style> element?

Layout

Which is the correct syntax for creating a style?

<resources> <style name="MyFont"> <item name="android:typeface">monospace</item> <item name="android:textColor">#D7D6D7</item> </style> </resources>

Which is the correct syntax to apply the style to a component?

It allows a style to inherit the properties of an existing style.

Inheritance

Which statement BEST DESCRIBES how to inherit a custom style?

To inherit a custom style, use the name of the style you want to inherit as the first part of the new style's name and separate the parts with a period. Syntax: name="StyletoInherit.NewStyle"

Which is the correct syntax to inherit a platform style?

Which is the correct syntax in creating a custom style, where the inherited style is named "MyFont"?

It is a collection of attributes that define the look and format of an activity or an entire app. Any style can be used as a theme.

Theme

<style name="AppTheme" parent="Theme.Light.DarkActionBar">  <item name="colorPrimary">@color/colorPrimary</item> <item name="colorPrimaryDark">@color/colorPrimaryDark</item> <item name="colorAccent">@color/colorAccent</item> </style> where is the error in this theme xml file?

What is the correct syntax to apply a theme to an activity which is declared inside an <activity> element in the manifest file.