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diff --git a/docs/html/resources/articles/ui-1.5.jd b/docs/html/resources/articles/ui-1.5.jd new file mode 100644 index 0000000..c10cf52 --- /dev/null +++ b/docs/html/resources/articles/ui-1.5.jd @@ -0,0 +1,48 @@ +page.title=UI Framework Changes in Android 1.5 +@jd:body + + +<p>Android 1.5 offers a different default look for +the Android UI framework, in relation to Android 1.0 and 1.1. The +screenshots below show the same activity (creating a new contact) on +Android 1.1 and Android 1.5:</p> + +<img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 400px; height: 277px;" src="images/android.png" alt="" id="BLOGGER_PHOTO_ID_5323141124169754690" border="0"> + +<p>You +can see in this example that the buttons and checkboxes have a new +appearance. Even though these changes do not affect binary nor source +compatibility, they might still break the UI of your apps. As part of +the UI refresh, the minimum size of some of the widgets has changed. +For instance, Android 1.1 buttons have a minimum size of 44x48 pixels +whereas Android 1.5 buttons now have a minimum size of 24x48 pixels. +The image below compares the sizes of Android 1.1 buttons with Android +1.5 buttons:</p> + +<img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 100px; height: 130px;" src="images/buttons.png" alt="" border="0"> + +<p>If you rely on the button's minimum size, then the layout of your application +may not be the same in Android 1.5 as it was in Android 1.1 because of this +change. This would happen for instance if you created a grid of buttons using +<code>LinearLayout</code> and relying on the minimum size yielded by +<code>wrap_content</code> to align the buttons properly:</p> + +<img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 400px; height: 277px;" src="images/grid.png" alt="" id="BLOGGER_PHOTO_ID_5323147943613255250" border="0"> + +<p>This layout could easily be fixed by using the +<code>android:layout_weight</code> attribute or by replacing the +<code>LinearLayout</code> containers with a <code>TableLayout</code>.</p> + +<p>This example is probably the worst-case UI issue you may encounter when +running your application on Android 1.5. Other changes introduced in Android +1.5, especially bug fixes in the layout views, may also impact your +application—especially if it is relying on faulty/buggy behavior of the UI +framework.</p> + +<p>If you encounter issues when running your application on Android 1.5, please +join us on the <a href="{@docRoot}resources/community-groups.html">Android +developer groups</a> or <a +href="{@docRoot}resources/community-more.html">IRC</a> so that we and the +Android community can help you fix your application.</p> + +<p>Happy coding!</p> |