Develop Reference

error with fab button design with vector assets

I have used the dependencies to be used as suggested. below is the pic.
build_gradle(module)
now I have selected a black plus icon from vector assets and named it as fab_plus, now I have this file in my drawable folder.
fab_plus_XML
now I tried to used that fab_plus_XML like this. Pic below.
activity_main
Now my question is why is the fab_plus is showing in red.
thanks in advance. pls, help me, someone.

There are two things wrong with the way you are specifying the drawable. To refer to a drawable within your project, you simply use #drawable/your_drawable and to allow backward compatibility of VectorDrawables you should use app:srcCompat as per the guidance.
So in your ImageView, instead of
android:src="#android:drawable/fab_plus"
you should have
app:srcCompat="#drawable/fab_plus"
You will also need to make sure the app namespace is included at the top of your layout xmlns:app="http://schemas.android.com/apk/res-auto" along with the current android and tools namespaces.

you need to use:
app:srcCompat
instead of
android:src
but the tooltip there should exactly tell you this and AFAIR even offer a quick-fix

Get the name of the image resource used in image button

I'm new to Android programming and I want to know that how can I get the name of the image resource that is currently set on the image button.
eg : b1.setImageResource(R.drawable.img);
//where b1 is the image button and img is the name of the png file present in res/drawable.
Now I would like to know how would I get the name of the image file i.e "img".
Thanks in advance.

You can use setTag() and getTag() this way you can store any data you want.
imageView.setTag("imageNameHere");
String imageName = (String) imageView.getTag();
Let me know! ;)

I am guessing that you are simply looking to add an image as a background to your button.
To do this, add your chosen image to your res/drawable folder (there are many ways to do this). You can rename it if you like, but I recommend lowercase with underscores ( _ ), like "img_1", or just "img" as you have said.
Then, in your XML view, add the android:background line to your button...
<Button
android:id="#+id/b1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/img"/>

Is it possible to use fonts for Images/icons in Android

I Just know that we can use fonts for text only by using the TypeFace class. But can anyone please confirm me about images.
I have added all my custom fonts(.ttf) inside asset/fonts folder. Placed some ImageViews in their appropriate place in my app. And trying to use fonts to set images on them.
I have googled for a long time, but unfortunately unable to find any satisfied hint or help.
Can any one please help me to go forward from the current step.

Placed some ImageViews in their appropriate place in my app. And trying to use fonts to set images on them.
ImageView accepts images. Whatever set of pixels or vectors are in a font, they are not images from the standpoint of ImageView. The simplest way to display material from a custom font is through TextView, though you are welcome to implement your own Drawable and attempt to use that with an ImageView, or draw straight to the Canvas (e.g., in a custom widget).

You can use font awesome. Import the android-iconify/1.0.6 jar library from http://repo1.maven.org/maven2/com/joanzapata/android/android-iconify/1.0.6/
and you can use IconTextView
<IconTextView
android:id="#+id/image"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:padding="10dp"
android:text="{fa-mobile}"
android:textColor="#9fd46c"
android:textSize="30dp"
/>

How to change a resource icon in a imageview with another resource icon

I have been reading some post about changing an image in an ImageView.
But everyone asks for setting an ImageView with a custom image, and I want to set a system image inside it.
I made this:
ledicon.setImageDrawable(getResources().getDrawable(R.drawable.presence_busy));
But Eclipse tells me that presence_busy is not recognized.
Why?
I am using presence_online in the XML file,
android:src="#android:drawable/presence_online"
and all works perfectly.

Try this:
ledicon.setImageDrawable(getResources().getDrawable(android.R.drawable.presence_busy));
(When accessing system resouces you have to look them um in android.R not your own.)

Setting a picture for button i made in XML (Android)?

I'm having this question about setting pictures for Buttons in XML :
I made some .png pictures I want to set as pictures instead of the buttons that I get in default when i create my android apps.. Now I loaded in the files into the drawable folder.. And how do I write in XML to get the right thing?
Is setting the button visible to false and adding a picture as background for it an option?
Because that's all the ways I thought about. Or is there a better way to do this kind of thing?

what I understood is that you want to set the picture in background. Do it like this in your Button tag:
android:background="#drawable/yourpicturename"

Add the png to the drawable folder that is under the res folder in your project (if you are using eclipse). Then in your XML file simply use android:background="#drawable/filename". Make sure to omit the file extension

You can use any of:
drawableTop, drawableLeft, drawableRight, drawableBottom
For example,
<Button android:drawableRight="#drawable/some_image" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Some text" />
The image some_image.png will be positioned to the right of your text in this case.