When you need to display static images in your app, you can use the Show
There are two ways to define and instantiate a
Note: You might instead prefer using a vector drawable, which defines an image with a set of points, lines, and curves, along with associated color information. This allows vector drawables to be scaled for different sizes without a loss of quality. For more information, see Vector drawables overview. Create drawables from resource imagesYou can add graphics to your app by referencing an image file from your project resources. Supported file types are PNG (preferred), JPG (acceptable), and GIF (discouraged). App icons, logos, and other graphics, such as those used in games, are well suited for this technique. To use an image resource, add your file to the Note: Image resources placed in the The following code snippet demonstrates how to build an
In other cases, you may want to handle your image resource as a
Warning: Each unique resource in your project can maintain only one state, no matter how many different objects you instantiate for it. For example, if you instantiate two The XML snippet below shows how to add a drawable resource to an <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/my_image" android:contentDescription="@string/my_image_desc" /> For more information about using project resources, see Resources and assets. Note: When using image resources as the source of your drawables, be sure the images are the appropriate size for various pixel densities. If the images are not correct they will be scaled up to fit, which can cause artifacting in your drawables. For more information, read Support different pixel densities. Create drawables from XML resourcesIf there is a After you've defined your <!-- res/drawable/expand_collapse.xml --> <transition xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@drawable/image_expand"/> <item android:drawable="@drawable/image_collapse"/> </transition> Then, retrieve and instantiate the object by calling Each drawable class that supports XML inflation utilizes specific XML attributes that help define the object properties. The following
code instantiates the
For more information about the XML attributes supported, refer to the classes listed above. Shape drawablesA
Because
You can use the
If you want to use the custom view in the XML layout instead, then the <com.example.shapedrawable.CustomDrawableView android:layout_width="fill_parent" android:layout_height="wrap_content" /> The You can also define primitive drawable shapes using XML resources. For more information, see Shape drawable in Drawable resource types. NinePatch drawablesA Use the border to define the stretchable and static areas of the image. You indicate a stretchable section by drawing one (or more) 1-pixel wide black line(s) in the left and top part of the border (the other border pixels should be fully transparent or white). You can have as many stretchable sections as you want. The relative size of the stretchable sections stays the same, so the largest section always remains the largest. You can also define an optional drawable section of the image (effectively, the padding lines) by drawing a line on the right and a line on the bottom. If a To clarify the difference between the lines, the left and top lines define which pixels of the image are allowed to be replicated in order to stretch the image. The bottom and right lines define the relative area within the image that the contents of the view are allowed to occupy. Figure 1 shows an example of a NinePatch graphic used to define a button: Figure 1: Example of a NinePatch graphic that defines a button This NinePatch graphic defines one stretchable area with the left and top lines, and the drawable area with the bottom and right lines. In the top image, the dotted grey lines identify the regions of the image that are replicated in order to stretch the image. The pink rectangle in the bottom image identifies the region in which the contents of the view are allowed. If the contents don't fit in this region, then the image is stretched to make them fit. The Draw 9-patch tool offers an extremely handy way to create your NinePatch images, using a WYSIWYG graphics editor. It even raises warnings if the region you've defined for the stretchable area is at risk of producing drawing artifacts as a result of the pixel replication. The following sample layout XML demonstrates how to add a NinePatch graphic to a couple of buttons. The NinePatch image is saved to <Button android:id="@+id/tiny" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_centerInParent="true" android:text="Tiny" android:textSize="8sp" android:background="@drawable/my_button_background"/> <Button android:id="@+id/big" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_centerInParent="true" android:text="Biiiiiiig text!" android:textSize="30sp" android:background="@drawable/my_button_background"/> Note that the Figure 2 shows the two buttons rendered from the XML and NinePatch image shown above. Notice how the width and height of the button varies with the text, and the background image stretches to accommodate it. Figure 2: Buttons rendered using an XML resource and a NinePatch graphic Custom drawablesWhen you want to create some custom drawings, you can do so by extending the The most important method
to implement is The following code shows a simple subclass of
Then you can add your drawable wherever you'd like, such as to an
On Android 7.0 (API level 24) and higher, you can also define instances of your custom drawable with XML in the following ways:
Add tint to drawablesWith Android 5.0 (API level 21) and above, you can tint bitmaps and nine-patches defined as alpha masks. You can tint them with color resources or theme attributes that resolve to color resources (for example, You can apply a tint to The Android Support Library includes the Which of the following is a technique that is used to picture the relative position of products on two or more product dimensions important to consumer purchase decision?Perceptual Mapping & Positioning Dimensions
Perceptual mapping is a diagrammatic technique used by marketers in an attempt to visually display the perceptions of customers or potential customers. Typically the position of a product, product line, brand, or company is displayed relative to their competition.
What are the benefits of conducting market research?The Benefits of Market Research. Maintain a Customer-Centric Approach. ... . Connect With Your Audience More Effectively. ... . Identify Opportunities for Growth. ... . Reduce Risks by Testing Concepts. ... . Make More Informed Decisions. ... . Compete More Effectively. ... . Stay on Top of Trends.. Is the process through which researchers build theory that is grounded or based on the data collected?Iteration is the process through which researchers build theory that is grounded, or based on the data collected. In data reduction, the iterative process may uncover issues that the already collected data do not address.
Which of the following is not an emerging trend in marketing research?Which of the following is not an emerging trend in marketing research? Scanner research using loyalty cards.
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