android_frameworks_base/docs/html/preview/support.jd

page.title=Support

@jd:body

<p>If you've encountered bugs or have feedback about the L Developer Preview,
<a href="https://code.google.com/p/android-developer-preview/">create an issue</a> on
our issue tracker.</p>

<p>For more support,
<a href="https://plus.google.com/communities/101985907812750684586">join
the L Developer Preview Google+ community</a> to discuss your development experiences.


<h2 id="ReleaseNotes">Release Notes</h2>
<p>June 25, 2014 - Initial Release of the L Developer Preview</p>

<h3 id="UserInterface">User interface</h3>
<ul>
<li>If your app launches an activity with
{@link android.app.Activity#startActivity startActivity()}
and an {@link android.content.Intent} set to
{@link android.content.Intent#FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET}, the
activity shows up as a separate task in the Recent apps screen. This is the
same behavior as though your app used {@code Intent.FLAG_ACTIVITY_NEW_DOCUMENT}
(see <a href="{@docRoot}preview/api-overview.html#Recents">Concurrent
documents and activities in the Recents screen</a>). If you want your activity
to remain in the same task that launched it, use
{@link android.app.Activity#startActivityForResult
startActivityForResult()} instead.</li>
<li>System-rendered shadows for user interface (UI) elements in views may
appear with visible spiky edges. To avoid this visual artifact, use a higher
<a href="{@docRoot}preview/material/views-shadows.html#elevation">view
elevation</a>.</li>
<li>On very tall or wide views, view shadows may appear with additional rough
visual artifacts around the view edges. To minimize this, avoid using view
shadows with very narrow views.</li>
<li>The {@code android.graphics.drawable.RippleDrawable} class does not
respond to pointer location changes, except when the drawable is set as a
{@link android.view.View} background.</li>
</ul>

<h3 id="Multimedia">Multimedia</h3>
<ul>
<li>The {@code android.hardware.camera2} APIs are supported only on Nexus 5
devices.</li>
<li>Saving a DNG file with the new {@code android.hardware.camera2.DngCreator}
API fails if lens shading compensation map generation is not enabled. To
capture images to DNG files, add the following code when creating your capture
requests:
<pre>
CaptureRequest.Builder stillCaptureRequest =
        mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);

stillCaptureRequest.set(CaptureRequest.STATISTICS_LENS_SHADING_MAP_MODE,
        CaptureRequest.STATISTICS_LENS_SHADING_MAP_MODE_ON);
</pre></li>
<li>The {@code android.media.AudioTrack.write(float[], int, int, int)} method
currently does not work. Use the
{@link android.media.AudioTrack#write(short[], int, int)
AudioTrack.write(short[], int, int)} method instead.</li>
<li>Lockscreen security is currently not enforced when users start a Android
mirroring session from the Quick Settings shade.</li>
</ul>

<h3 id="UserInput">User input</h3>
<ul><li>The System UI may crash unexpectedly while the device is charging, if
	the locale is set to {@code fr} (FRENCH).</li></ul>

<h3 id="Wireless">Wireless and Connectivity</h3>
<ul>
<li>The {@code android.bluetooth.le} APIs are supported only on Nexus 5
devices.</li>
<li>You might encounter these issues while using Bluetooth LE scanning:
	<ul>
	<li><em>Settings</em> does not show all Bluetooth LE devices when a scan
		filter is set.</li>
	<li>System returns non-intuitive error messages during a Bluetooth LE scan,
		when Bluetooth is off.</li>
	<li>The {@code BluetoothLeScanner.startScan()} method starts failing after
		six concurrent scans with different callbacks.</li>
	</ul>
</li>
<li>You might encounter these issues while using Bluetooth LE advertising:
	<ul>
		<li>The device MAC address does not change for multiple advertising
		when the application processor is asleep.</li>
		<li>The TX Power Level is always 0 in advertising packets.</li>
	</ul>
</li>
</ul>

<h3 id="Enterprise">Enterprise</h3>
<ul>
<li>The device may crash unexpectedly in these situations when using
Android work functionality:
<ul>
<li>The user attempts to share a web page (via <strong>Menu &gt; Share</strong>)
from a non-Android work Chrome app to a Android work profile Gmail app.</li>
<li>The user attempts to share a web page via Bluetooth from a
Android work profile
Chrome app.</li>
<li>The user attempts to share a web page via Android Beam from a
Android work profile Chrome app.</li>
</ul>
</li>
<li>Deleting a Android work profile may take several minutes to complete. You
cannot create a new Android work profile until the deletion operation is over.</li>
</ul>

<h3 id="64bitsupport">64-bit support</h3>
<ul>
<li><p>If you are using the NDK to compile apps for 32- or 64-bit systems and
want to use the features provided in the L Developer Preview, download the
{@code android-ndk64-r10} package for your target platform from the
<a href="{@docRoot}tools/sdk/ndk/index.html">Android NDK page</a>. The
{@code android-ndk64-r10} package contains the L Developer Preview API
library (located under the {@code platforms/android-L/} API directory) for both
32- and 64-bit systems. The package also includes the {@code gcc-4.9} compiler
for both 32- and 64-bit apps.</p></li>
</ul>