Android : Combining xml file and custom view

Question

What I want to make is that there is two buttons in left side, and imageView on the right side. The buttons activate the camera or bring a photo from the gallery and display it on the imageView. Also, if user touch the image, then a rect shape is following the move of user.

I made a xml file that contain the buttons and imageView. Then, I made a custom view for the rectangle shape using canvas.

What I was thinking is set touchListener on the imageView and according to the coordinates, app generate the rectangle on the canvas that overlapped on the imageView.

Here is my question, Can I use both a xml file and custom view at the same time? That means those two things can be overlapped?

I tried

v = new DrawingTheBall(this); // v is my custom view
setContentView(v);
setContentView(R.layout.activity_main);

no errors but, only the first called one appears.

If the overlapping is impossible, then should I just put the buttons and imageView in the custom view class?

Alexander Zhak · Accepted Answer · 2015-01-29 12:58:38Z

2

Yes, you can use layout resource from XML and custom views created programmatically together. For this you need to:

Specify view holder for custom view in XML and give it an ID (it can be root layout). For example:

<LinearLayout android:id="@+id/customViewContainer" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical">
setContentView(R.layout.xml_resource);
Find your custom view container:

LinearLayout custonViewContainer = (LinearLayout)findViewById(R.id.customViewContainer);

Add custom view to container:

custonViewContainer.addView(view);

That's pretty much it!

answered Jan 29, 2015 at 12:58

Alexander Zhak

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1 Comment

user3473222 Over a year ago

Thanks, I will try it right away! You are a life saver~

Gorcyn · Accepted Answer · 2015-01-29 13:38:20Z

0

You can also put your custom view in an XML layout file:

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <com.package.DrawingTheBall
        android:id="@+id/drawingTheBall"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>

answered Jan 29, 2015 at 13:38

Gorcyn

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