Setting up Android support package v7 for eclipse - GridLayout
android, android-layout, eclipse, java
Solution
I use intellij idea, so it's not exactly your case, but maybe it will be helpfull. I struggled with setting this up whole day, then it suddenly worked. I'll describe my setup so you can compare:
- setup the GridLayout project as library project. Example of setting up can be found at android developer site here
- setup your main project as usual, reference the library project as described in the link above.
- add libraries to your main project. I used latest `android-support-v13.jar` and `android-support-v7-gridlayout.jar`. NOTE: I used the v7 support library in the main project, not the library project. In fact, checking it now - in library project I don't reference the v7 support.
- Use full package name in the layout file: `<android.support.v7.widget.GridLayout />` instead of `<GridLayout />`
- use custom namespace, something like this: `xmlns:grid="http://schemas.android.com/apk/res-auto"` in your layout file to use custom attributes defined in the library project in your tag, like `grid:columnCount`
hope this helps. I'm currently trying it, not even sure it is something I need :)
Problem
I've been trying this all evening to no avail so I'm going to list my exact steps starting from scratch. - I've installed the support package via SDK manager. - I create a new android project which I call "testinggridlayout". - The build target I select is Android 2.1 API 7. - List item This will be my project which I want to be able to create a grid layout on. To set up the support package these are my steps: - Right-click the project I've just created and select - New - Android Project - Name it GridLayout and select create project from existing source and browse to: android-sdks\extras\android\support\v7\gridlayout - Right-click my `testinggridlayout` project and click properties: - under Java Build Path - select the Projects tab, then Add. - select my project "GridLayout" and click OK, then Ok. At this point If I go into the main.xml layout manually insert this code: ``` <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <GridLayout android:background="#FFFFFF" android:layout_width="wrap_content" android:layout_height="wrap_content" android:columnCount="8" android:rowCount="5" > </GridLayout> </LinearLayout> ``` I get the error: The following classes could not be found: - GridLayout (fix build path, edit XML). If I change `<GridLayout> & </GridLayout>` to `<android.support.v7.widget.GridLayout> & </android.support.v7.widget.Gridlayout>` I receive the same error: The following classes could not be found: - android.support.v7.widget.GridLayout (fix build path, edit XML). At that point I created a folder in my project called "libs". I then copied the android-support-v7-GridLayout.jar file under libs in the GridLayout project to this folder. I right clicked this file in my "libs" folder in "testinggridlayout" and selected "Add to Build Path". My error then changed to: The following classes could not be instantiated: - android.support.v7.widget.GridLayout (open class, show error log) Which bit(s) have I missed out/ shouldn't have done?