Android tools - 17 avril 2012
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Here are the key points about lint and layoutopt from the document: - lint is a static analysis tool that checks for bugs and optimization opportunities in Android code. It comes pre-installed with Android Studio. - layoutopt is a tool that optimizes Android layout resources (XML files) to improve performance. It is run automatically by the build system. - lint checks the code for potential bugs, crashes, security issues and unnecessary or inefficient code. It produces warnings and errors. - layoutopt analyzes layout files and optimizes them by removing unnecessary attributes, merging rules etc. This makes layout inflation faster. - Both tools help improve the quality and performance of Android apps without requiring any code changes from the
![** MEMINFO in pid 1523 [com.example.android.sample] **
Shared Private Heap Heap Heap
Pss Dirty Dirty Size Alloc Free
------ ------ ------ ------ ------ ------
Native 3260 944 3220 9960 6359 20
Dalvik 6952 15612 6344 21319 16224 5095
Cursor 0 0 0
Ashmem 0 0 0
Other dev 12583 660 1096
.so mmap 1149 1812 352
.jar mmap 0 0 0
.apk mmap 114 0 0
.ttf mmap 7 0 0
.dex mmap 807 0 0
Other mmap 44 8 28
Unknown 1439 356 1424
TOTAL 26355 19392 12464 31279 22583 5115
1 of 2](https://image.slidesharecdn.com/androidtools-120419074632-phpapp01/85/Android-tools-17-avril-2012-6-320.jpg)
![** MEMINFO in pid 1523 [com.example.android.sample] **
Shared Private Heap Heap Heap
Pss Dirty Dirty Size Alloc Free
------ ------ ------ ------ ------ ------
Native 3260 944 3220 9960 6359 20
Dalvik 6952 15612 6344 21319 16224 5095
Cursor 0 0 0
Ashmem 0 0 0
Other dev 12583 660 1096
.so mmap 1149 1812 352
.jar mmap 0 0 0
.apk mmap 114 0 0
.ttf mmap 7 0 0
.dex mmap 807 0 0
Other mmap 44 8 28
Unknown 1439 356 1424
TOTAL 26355 19392 12464 31279 22583 5115
1 of 2](https://image.slidesharecdn.com/androidtools-120419074632-phpapp01/85/Android-tools-17-avril-2012-7-320.jpg)
![** MEMINFO in pid 1523 [com.example.android.sample] **
Shared Private Heap Heap Heap
Pss Dirty Dirty Size Alloc Free
------ ------ ------ ------ ------ ------
Native 3260 944 3220 9960 6359 20
Dalvik 6952 15612 6344 21319 16224 5095
Cursor 0 0 0
Ashmem 0 0 0
Other dev 12583 660 1096
.so mmap 1149 1812 352
.jar mmap 0 0 0
.apk mmap 114 0 0
.ttf mmap 7 0 0
.dex mmap 807 0 0
Other mmap 44 8 28
Unknown 1439 356 1424
TOTAL 26355 19392 12464 31279 22583 5115
1 of 2](https://image.slidesharecdn.com/androidtools-120419074632-phpapp01/85/Android-tools-17-avril-2012-8-320.jpg)
![** MEMINFO in pid 1523 [com.example.android.sample] **
Shared Private Heap Heap Heap
Pss Dirty Dirty Size Alloc Free
------ ------ ------ ------ ------ ------
Native 3260 944 3220 9960 6359 20
Dalvik 6952 15612 6344 21319 16224 5095
Cursor 0 0 0
Ashmem 0 0 0
Other dev 12583 660 1096
.so mmap 1149 1812 352
.jar mmap 0 0 0
.apk mmap 114 0 0
.ttf mmap 7 0 0
.dex mmap 807 0 0
Other mmap 44 8 28
Unknown 1439 356 1424
TOTAL 26355 19392 12464 31279 22583 5115
1 of 2](https://image.slidesharecdn.com/androidtools-120419074632-phpapp01/85/Android-tools-17-avril-2012-9-320.jpg)
![lint
$ lint frameworks/base/tests/ChetBugs/TextViewScale
AndroidManifest.xml: Warning: Manifest should specify a minimum API level with <uses-sdk
android:minSdkVersion="?" />; if it really supports all versions of Android set it to 1. [UsesSdk]
res/drawable-hdpi/change_background.png: Warning: The resource R.drawable.change_background appears to be unused
[UnusedResources]
res/drawable-hdpi/gbread.jpg: Warning: The resource R.drawable.gbread appears to be unused [UnusedResources]
res/drawable-hdpi/gbread_sm.jpg: Warning: The resource R.drawable.gbread_sm appears to be unused
[UnusedResources]
res/drawable-hdpi/refresh.png: Warning: The resource R.drawable.refresh appears to be unused [UnusedResources]
res/drawable-hdpi/self_portrait.jpg: Warning: The resource R.drawable.self_portrait appears to be unused
[UnusedResources]
res/drawable-hdpi/gbread.jpg: Warning: The image gbread.jpg varies significantly in its density-independent (dip)
size across the various density versions: drawable-mdpi/gbread.jpg: 2560x1920 dp (2560x1920 px), drawable-hdpi/
gbread.jpg: 1707x1280 dp (2560x1920 px) [IconDipSize]
res/drawable-hdpi/gbread_sm.jpg: Warning: The image gbread_sm.jpg varies significantly in its density-independent
(dip) size across the various density versions: drawable-mdpi/gbread_sm.jpg: 480x640 dp (480x640 px), drawable-
hdpi/gbread_sm.jpg: 320x427 dp (480x640 px) [IconDipSize]
res/drawable-hdpi/self_portrait.jpg: Warning: The image self_portrait.jpg varies significantly in its density-
independent (dip) size across the various density versions: drawable-mdpi/self_portrait.jpg: 671x800 dp (671x800
px), drawable-hdpi/self_portrait.jpg: 447x533 dp (671x800 px) [IconDipSize]
res/drawable-mdpi/gbread.jpg: Warning: The gbread.jpg icon has identical contents in the following configuration
folders: drawable-hdpi, drawable-mdpi [IconDuplicatesConfig]
res/drawable-mdpi/gbread_sm.jpg: Warning: The gbread_sm.jpg icon has identical contents in the following
configuration folders: drawable-hdpi, drawable-mdpi [IconDuplicatesConfig]
res/drawable-mdpi/self_portrait.jpg: Warning: The self_portrait.jpg icon has identical contents in the following
configuration folders: drawable-hdpi, drawable-mdpi [IconDuplicatesConfig]
res/drawable-mdpi/self_portrait.jpg: Warning: The self_portrait.jpg icon has identical contents in the following
configuration folders: drawable-hdpi, drawable-mdpi [IconDuplicatesConfig]
res: Warning: Missing density variation folders in res: drawable-xhdpi [IconMissingDensityFolder]
0 errors, 13 warnings](https://image.slidesharecdn.com/androidtools-120419074632-phpapp01/85/Android-tools-17-avril-2012-52-320.jpg)
Android tools - 17 avril 2012
- 1. Android: A Bunch of Tools Romain Guy @romainguy http://www.curious-creature.org/+
- 2. Command line
- 4. $ adb shell dumpsys
- 5. $ adb shell dumpsys meminfo <process>
- 6. ** MEMINFO in pid 1523 [com.example.android.sample] ** Shared Private Heap Heap Heap Pss Dirty Dirty Size Alloc Free ------ ------ ------ ------ ------ ------ Native 3260 944 3220 9960 6359 20 Dalvik 6952 15612 6344 21319 16224 5095 Cursor 0 0 0 Ashmem 0 0 0 Other dev 12583 660 1096 .so mmap 1149 1812 352 .jar mmap 0 0 0 .apk mmap 114 0 0 .ttf mmap 7 0 0 .dex mmap 807 0 0 Other mmap 44 8 28 Unknown 1439 356 1424 TOTAL 26355 19392 12464 31279 22583 5115 1 of 2
- 7. ** MEMINFO in pid 1523 [com.example.android.sample] ** Shared Private Heap Heap Heap Pss Dirty Dirty Size Alloc Free ------ ------ ------ ------ ------ ------ Native 3260 944 3220 9960 6359 20 Dalvik 6952 15612 6344 21319 16224 5095 Cursor 0 0 0 Ashmem 0 0 0 Other dev 12583 660 1096 .so mmap 1149 1812 352 .jar mmap 0 0 0 .apk mmap 114 0 0 .ttf mmap 7 0 0 .dex mmap 807 0 0 Other mmap 44 8 28 Unknown 1439 356 1424 TOTAL 26355 19392 12464 31279 22583 5115 1 of 2
- 8. ** MEMINFO in pid 1523 [com.example.android.sample] ** Shared Private Heap Heap Heap Pss Dirty Dirty Size Alloc Free ------ ------ ------ ------ ------ ------ Native 3260 944 3220 9960 6359 20 Dalvik 6952 15612 6344 21319 16224 5095 Cursor 0 0 0 Ashmem 0 0 0 Other dev 12583 660 1096 .so mmap 1149 1812 352 .jar mmap 0 0 0 .apk mmap 114 0 0 .ttf mmap 7 0 0 .dex mmap 807 0 0 Other mmap 44 8 28 Unknown 1439 356 1424 TOTAL 26355 19392 12464 31279 22583 5115 1 of 2
- 9. ** MEMINFO in pid 1523 [com.example.android.sample] ** Shared Private Heap Heap Heap Pss Dirty Dirty Size Alloc Free ------ ------ ------ ------ ------ ------ Native 3260 944 3220 9960 6359 20 Dalvik 6952 15612 6344 21319 16224 5095 Cursor 0 0 0 Ashmem 0 0 0 Other dev 12583 660 1096 .so mmap 1149 1812 352 .jar mmap 0 0 0 .apk mmap 114 0 0 .ttf mmap 7 0 0 .dex mmap 807 0 0 Other mmap 44 8 28 Unknown 1439 356 1424 TOTAL 26355 19392 12464 31279 22583 5115 1 of 2
- 10. Objects Views: 45 ViewRootImpl: 1 AppContexts: 2 Activities: 1 Assets: 2 AssetManagers: 2 Local Binders: 13 Proxy Binders: 14 Death Recipients: 0 OpenSSL Sockets: 0 SQL heap: 0 MEMORY_USED: 0 PAGECACHE_OVERFLOW: 0 MALLOC_SIZE: 0 Asset Allocations zip:/data/app/com.example.android.sample-2.apk:/resources.arsc: 2K 2 of 2
- 11. Objects Views: 45 ViewRootImpl: 1 AppContexts: 2 Activities: 1 Assets: 2 AssetManagers: 2 Local Binders: 13 Proxy Binders: 14 Death Recipients: 0 OpenSSL Sockets: 0 SQL heap: 0 MEMORY_USED: 0 PAGECACHE_OVERFLOW: 0 MALLOC_SIZE: 0 Asset Allocations zip:/data/app/com.example.android.sample-2.apk:/resources.arsc: 2K 2 of 2
- 12. Objects Views: 45 ViewRootImpl: 1 AppContexts: 2 Activities: 1 Assets: 2 AssetManagers: 2 Local Binders: 13 Proxy Binders: 14 Death Recipients: 0 OpenSSL Sockets: 0 SQL heap: 0 MEMORY_USED: 0 PAGECACHE_OVERFLOW: 0 MALLOC_SIZE: 0 Asset Allocations zip:/data/app/com.example.android.sample-2.apk:/resources.arsc: 2K 2 of 2
- 13. $ adb shell dumpsys gfxinfo <process>
- 14. Caches: Current memory usage / total memory usage (bytes): TextureCache 1166964 / 25165824 LayerCache 0 / 16777216 GradientCache 0 / 524288 PathCache 0 / 4194304 CircleShapeCache 0 / 1048576 OvalShapeCache 0 / 1048576 RoundRectShapeCache 0 / 1048576 RectShapeCache 0 / 1048576 ArcShapeCache 0 / 1048576 TextDropShadowCache 0 / 2097152 FontRenderer 0 262144 / 262144 FontRenderer 1 262144 / 262144 FontRenderer 2 262144 / 262144 Other: FboCache 1 / 16 PatchCache 22 / 512 Total memory usage: 1953396 bytes, 1.86 MB View hierarchy: android.view.ViewRootImpl@40b82f70: 45 views, 4.97 kB (display lists) Total ViewRootImpl: 1 Total Views: 45 Total DisplayList: 4.97 kB
- 15. Caches: Current memory usage / total memory usage (bytes): TextureCache 1166964 / 25165824 LayerCache 0 / 16777216 GradientCache 0 / 524288 PathCache 0 / 4194304 CircleShapeCache 0 / 1048576 OvalShapeCache 0 / 1048576 RoundRectShapeCache 0 / 1048576 RectShapeCache 0 / 1048576 ArcShapeCache 0 / 1048576 TextDropShadowCache 0 / 2097152 FontRenderer 0 262144 / 262144 FontRenderer 1 262144 / 262144 FontRenderer 2 262144 / 262144 Other: FboCache 1 / 16 PatchCache 22 / 512 Total memory usage: 1953396 bytes, 1.86 MB View hierarchy: android.view.ViewRootImpl@40b82f70: 45 views, 4.97 kB (display lists) Total ViewRootImpl: 1 Total Views: 45 Total DisplayList: 4.97 kB
- 16. Caches: Current memory usage / total memory usage (bytes): TextureCache 1166964 / 25165824 LayerCache 0 / 16777216 GradientCache 0 / 524288 PathCache 0 / 4194304 CircleShapeCache 0 / 1048576 OvalShapeCache 0 / 1048576 RoundRectShapeCache 0 / 1048576 RectShapeCache 0 / 1048576 ArcShapeCache 0 / 1048576 TextDropShadowCache 0 / 2097152 FontRenderer 0 262144 / 262144 FontRenderer 1 262144 / 262144 FontRenderer 2 262144 / 262144 Other: FboCache 1 / 16 PatchCache 22 / 512 Total memory usage: 1953396 bytes, 1.86 MB View hierarchy: android.view.ViewRootImpl@40b82f70: 45 views, 4.97 kB (display lists) Total ViewRootImpl: 1 Total Views: 45 Total DisplayList: 4.97 kB
- 17. And more...
- 18. Tracking memory
- 19. Memory tracking tools • DDMS heap dump – hat, Eclipse MAT • Allocation Tracker
- 20. More information • Eclipse Memory Analyzer (MAT) – Supported by ADT – http://eclipse.org/mat/ • Memory Management for Android Apps – Google I/O 2011 – http://www.google.com/events/io/2011/sessions/memory- management-for-android-apps.html
- 21. Demo DDMS & hat
- 23. Demo DDMS graphs
- 25. Performance analysis tools • Frame rate • traceview
- 27. Framerate counter preDrawListener = new OnPreDrawListener() { @Override public boolean onPreDraw() { trackFPS(); return true; } }; ViewTreeObserver observer = view.getViewTreeObserver(); observer.addOnPreDrawListener(preDrawListener);
- 28. long mFpsStartTime = -1; long mFpsPrevTime = -1; int mFpsNumFrames = 0; private void trackFPS() { long nowTime = System.currentTimeMillis(); if (mFpsStartTime < 0) { mFpsStartTime = mFpsPrevTime = nowTime; mFpsNumFrames = 0; } else { ++mFpsNumFrames; long frameTime = nowTime - mFpsPrevTime; long totalTime = nowTime - mFpsStartTime; Log.d("FPS", "Frame time:t" + frameTime); mFpsPrevTime = nowTime; if (totalTime > 1000) { float fps = (float) mFpsNumFrames * 1000 / totalTime; Log.d("FPS", "FPS:t" + fps); mFpsStartTime = nowTime; mFpsNumFrames = 0; } } }
- 29. Framerate counter • Use code on preceding slides in your onDraw() method • Or if you can change the source – Set DEBUG_FPS to true in ViewRootImpl.java – Rebuild frameworks
- 30. Demo traceview
- 31. Hardware
- 32. HDMI Capture • 60 fps recording • Frame by frame replay • Requires fast computer • Requires HDMI output on device – Xoom – Galaxy Nexus • e.g. BlackMagic Intensity Pro
- 34. High-speed Camera • Great framerate – 60 to 1200 fps • Low resolution & affordable – e.g. Casio EX-F1 300fps@512x384 • High resolution & (very) expensive – e.g. RED EPIC-M 300fps@2048x854 • Support all devices
- 36. Demo HDMI recorder and high-speed camera
- 37. HierarchyViewer
- 39. @ViewDebug.ExportedProperty • Fields • Methods – No argument – Return value – i.e. getters
- 40. @ViewDebug.ExportedProperty(mapping = { @ViewDebug.IntToString(from = VISIBLE, to = "VISIBLE"), @ViewDebug.IntToString(from = INVISIBLE, to = "INVISIBLE"), @ViewDebug.IntToString(from = GONE, to = "GONE") }) int mVisibility;
- 41. @ViewDebug.ExportedProperty(resolveId = true) int mID = NO_ID;
- 42. @ViewDebug.ExportedProperty( deepExport = true, prefix = "layout_") public ViewGroup.LayoutParams getLayoutParams() { return mLayoutParams; }
- 43. Limitations • Does not work on retail devices – “user” builds – Security reasons • Works on – “userdebug” builds – “eng” builds – emulator
- 45. public class ViewServerActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ViewServer.get(this).addWindow(this); } @Override public void onDestroy() { super.onDestroy(); ViewServer.get(this).removeWindow(this); } @Override public void onResume() { super.onResume(); ViewServer.get(this).setFocusedWindow(this); } }
- 46. public class ViewServerActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ViewServer.get(this).addWindow(this); } @Override public void onDestroy() { super.onDestroy(); ViewServer.get(this).removeWindow(this); } @Override public void onResume() { super.onResume(); ViewServer.get(this).setFocusedWindow(this); } }
- 47. public class ViewServerActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ViewServer.get(this).addWindow(this); } @Override public void onDestroy() { super.onDestroy(); ViewServer.get(this).removeWindow(this); } @Override public void onResume() { super.onResume(); ViewServer.get(this).setFocusedWindow(this); } }
- 48. public class ViewServerActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ViewServer.get(this).addWindow(this); } @Override public void onDestroy() { super.onDestroy(); ViewServer.get(this).removeWindow(this); } @Override public void onResume() { super.onResume(); ViewServer.get(this).setFocusedWindow(this); } }
- 49. ViewServer • Single class – Apache 2.0 license – Requires INTERNET permission • API works with – Activity – Window • Only – for your app – for debuggable apps – on user builds
- 50. layoutopt
- 51. li n t layoutopt
- 52. lint $ lint frameworks/base/tests/ChetBugs/TextViewScale AndroidManifest.xml: Warning: Manifest should specify a minimum API level with <uses-sdk android:minSdkVersion="?" />; if it really supports all versions of Android set it to 1. [UsesSdk] res/drawable-hdpi/change_background.png: Warning: The resource R.drawable.change_background appears to be unused [UnusedResources] res/drawable-hdpi/gbread.jpg: Warning: The resource R.drawable.gbread appears to be unused [UnusedResources] res/drawable-hdpi/gbread_sm.jpg: Warning: The resource R.drawable.gbread_sm appears to be unused [UnusedResources] res/drawable-hdpi/refresh.png: Warning: The resource R.drawable.refresh appears to be unused [UnusedResources] res/drawable-hdpi/self_portrait.jpg: Warning: The resource R.drawable.self_portrait appears to be unused [UnusedResources] res/drawable-hdpi/gbread.jpg: Warning: The image gbread.jpg varies significantly in its density-independent (dip) size across the various density versions: drawable-mdpi/gbread.jpg: 2560x1920 dp (2560x1920 px), drawable-hdpi/ gbread.jpg: 1707x1280 dp (2560x1920 px) [IconDipSize] res/drawable-hdpi/gbread_sm.jpg: Warning: The image gbread_sm.jpg varies significantly in its density-independent (dip) size across the various density versions: drawable-mdpi/gbread_sm.jpg: 480x640 dp (480x640 px), drawable- hdpi/gbread_sm.jpg: 320x427 dp (480x640 px) [IconDipSize] res/drawable-hdpi/self_portrait.jpg: Warning: The image self_portrait.jpg varies significantly in its density- independent (dip) size across the various density versions: drawable-mdpi/self_portrait.jpg: 671x800 dp (671x800 px), drawable-hdpi/self_portrait.jpg: 447x533 dp (671x800 px) [IconDipSize] res/drawable-mdpi/gbread.jpg: Warning: The gbread.jpg icon has identical contents in the following configuration folders: drawable-hdpi, drawable-mdpi [IconDuplicatesConfig] res/drawable-mdpi/gbread_sm.jpg: Warning: The gbread_sm.jpg icon has identical contents in the following configuration folders: drawable-hdpi, drawable-mdpi [IconDuplicatesConfig] res/drawable-mdpi/self_portrait.jpg: Warning: The self_portrait.jpg icon has identical contents in the following configuration folders: drawable-hdpi, drawable-mdpi [IconDuplicatesConfig] res/drawable-mdpi/self_portrait.jpg: Warning: The self_portrait.jpg icon has identical contents in the following configuration folders: drawable-hdpi, drawable-mdpi [IconDuplicatesConfig] res: Warning: Missing density variation folders in res: drawable-xhdpi [IconMissingDensityFolder] 0 errors, 13 warnings
- 53. Better yet, use html $ lint frameworks/base/tests/ChetBugs/TextViewScale --html ~/tmp/lintoutput.html
- 54. Future tools
- 55. OpenGL Monitor • Tracing • Profiling • State tracking • Capture – Framebuffer – Intermediate drawing stages – Textures
- 58. Q&A