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我正試圖組合一個簡單的應用程序，它可以將sd卡上的現有文件作爲備份發送給內容提供者場景。有幾個問題 - 最令人擔憂的是我不斷收到這些圖形緩衝區分配錯誤 - 看起來像試圖調用第二個活動時，圖形緩衝區分配正在使用所有內存，但我不知道爲什麼。我已經讀過在我測試的手機（Galaxy Nexus）上報告過此問題的錯誤，但我幾乎在UI上使用默認圖形 - 這是非常基本的，所以我不確定爲什麼會發生這種情況。我也是新來的，所以請原諒我，如果我忽略了這些非常明顯的東西。圖形緩衝區分配
下面是相關錯誤的代碼和錯誤日誌（編輯長度，因爲它是週期性的和非常長的）。我感謝任何幫助和/或指導 - 謝謝。
public class MainActivity extends Activity implements OnClickListener
{
/**
* This class runs in the event that the Content provider
* step fails. This looks for the existing file generated by the
* content class, prepares the file, and hands the file
* to the SendData class to be emailed.
*/
private static final String TAG = "MainActivity_VADataSender";
public static String MyDB;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu)
{
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
// Create the getData intent
Intent intentgetData;
// call the life cycle events
// for now, inherit the settings from the parent class
// replace these with specifics if necessary once program is operational
public void onPause()
{
super.onPause();
}
public void onResume()
{
super.onResume();
}
public void onStop()
{
super.onStop();
}
public void onDestroy()
{
super.onDestroy();
}
@Override
public void onStart()
{
intentgetData = new Intent(MainActivity.this, SendData.class);
startActivity(intentgetData);
super.onStart();
}
public MainActivity() throws FileMissingException
{
File sd = Environment.getExternalStorageDirectory();
File data = Environment.getDataDirectory();
if (sd.canWrite())
{
// verify the paths- NOTE: may be device-specific
String currentDBPath = "TLC_COMMON/database.txt";
String backupDBPath = "database.txt";
File currentDB = new File(data, currentDBPath);
File backupDB = new File(sd, backupDBPath);
if (currentDB.exists())
// make the connection
try
//set the connections
{
FileChannel src = new FileInputStream(currentDB).getChannel();
FileChannel dst = new FileOutputStream(backupDB).getChannel();
dst.transferFrom(src, 0, src.size());
src.close();
dst.close();
// use the actual file name here (not backupDB)
setMyDB(backupDB);
}
catch (Exception e)
// if connection error
{
Log.e(TAG, "ERROR 1: current database does not exist");
Toast.makeText(getBaseContext(), e.getMessage(),
Toast.LENGTH_SHORT).show();
this.finish();
// halt processing
throw new FileMissingException();
}
}
else
// if sd can not write
{
Log.e(TAG, "ERROR 2: SD is not writable");
//Toast.makeText(getBaseContext(), e.getMessage(),
// Toast.LENGTH_SHORT).show();
this.finish();
throw new FileMissingException();
}
// returned at line 102
//return MyDB;
}
// same here- get the actual file name
public void setMyDB(File backupDB) {
// TODO Auto-generated method stub
}
public void onClick(View v) {
// TODO Auto-generated method stub
}
public static Object getMyDB() {
// TODO Auto-generated method stub
return MyDB;
}
}
</CODE>
二等：
public class SendData extends MainActivity
{
public SendData() throws FileMissingException {
super();
// TODO Auto-generated constructor stub
}
private static final String TAG = "SendData_VADatasender";
/* Checks if external storage is available to read */
public boolean isExternalStorageReadable()
{
String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state) ||
Environment.MEDIA_MOUNTED_READ_ONLY.equals(state))
{
return true;
}
{
return false;
}
}
// Send data by email
public void dataGetter() throws FileMissingException
{
try
{
File sd = Environment.getExternalStorageDirectory();
// verify it is saving as this file name; also path in previous class
String fileName = "MyDB";
{
if (sd.canWrite())
{
// add the File Attachment and URI (in EXTRA_TEXT) below once the program is running
//is this redundant to Object attachment below?
File attachment = new File(fileName);
}
else
{
Log.e(TAG, "Email attachment failed");
//Toast.makeText(getBaseContext(), e.getMessage(),
//Toast.LENGTH_SHORT).show();
finish();
}
}
}
catch(Exception e)
{
Log.e(TAG,"ERROR 5: Could not locate file");
Toast.makeText(getBaseContext(), e.getMessage(),
Toast.LENGTH_SHORT).show();
finish();
throw new FileMissingException();
}
}
Intent email;
@Override
public void onStart(){
//Uri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(), MyDB));
{
Object attachment = MainActivity.getMyDB();
{
Intent email = new Intent(Intent.ACTION_SENDTO);
email.putExtra(android.content.Intent.EXTRA_SUBJECT, "Exercise data");
email.putExtra(android.content.Intent.EXTRA_EMAIL, new String[]{"[email protected]"});
email.putExtra(android.content.Intent.EXTRA_TEXT, (Boolean) (attachment)); //Uri.fromFile(attachment)
//email.putExtra(android.content.Intent.EXTRA_STREAM, Uri.parse((String) attachment));
//email.setType("message/rfc822");
email.setType("text/plain");
startActivity(Intent.createChooser(email, "Send the exercise data:"));
super.onStart();
}
}
}
public void finish()
{
}
}
ERROR LOG:
11-21 12:21:54.367: I/ActivityManager(2448): START {act=android.intent.action.MAIN cat=
[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.example.va.datasender/.MainActivity
u=0} from pid 2640
11-21 12:21:54.468: E/MainActivity_VADataSender(4040): ERROR: current database does not exist
11-21 12:21:54.492: I/ActivityManager(2448): START {act=android.intent.action.CHOOSER
cmp=android/com.android.internal.app.ChooserActivity (has extras) u=0} from pid 4040
11-21 12:21:54.500: I/ActivityManager(2448): START {cmp=com.example.va.datasender/.SendData
u=0} from pid 4040
11-21 12:21:54.585: E/MainActivity_VADataSender(4040): ERROR: current database does not exist
....repeats...then graphics errors
11-21 12:21:57.265: I/ActivityManager(2448): START {cmp=com.example.va.datasender/.SendData
u=0} from pid 4040
11-21 12:21:57.359: E/IMGSRV(121): :0: PVRSRVAllocDeviceMem: Error 1 returned
11-21 12:21:57.359: E/IMGSRV(121): :0: GenericAlloc: Failed to allocate device memory
11-21 12:21:57.359: W/GraphicBufferAllocator(121): alloc(720, 1184, 5, 00000b00, ...) failed -
12 (Out of memory)
11-21 12:21:57.359: D/GraphicBufferAllocator(121): Allocated buffers:
11-21 12:21:57.359: D/GraphicBufferAllocator(121): 0x40b0cc40: 3404.00 KiB | 720 (736) x 1184
| 5 | 0x00000b00
11-21 12:21:57.359: D/GraphicBufferAllocator(121): 0x40b1e6d8: 3404.00 KiB | 720 (736) x 1184
| 5 | 0x00000b00
11-21 12:21:57.359: D/GraphicBufferAllocator(121): 0x40bb5898: 3404.00 KiB | 720 (736) x 1184
| 5 | 0x00000b00
11-21 12:21:57.359: D/GraphicBufferAllocator(121): 0x40bb5a90: 3404.00 KiB | 720 (736) x 1184
| 5 | 0x00000b00
11-21 12:21:57.359: D/GraphicBufferAllocator(121): 0x40bb5f18: 3404.00 KiB | 720 (736) x 1184
| 5 | 0x00000b00
11-21 12:21:57.359: D/GraphicBufferAllocator(121): 0x40bb6ec8: 3404.00 KiB | 720 (736) x 1184
| 5 | 0x00000b00
11-21 12:21:57.359: D/GraphicBufferAllocator(121): 0x40bba990: 1213.25 KiB | 720 (736) x 422
| 1 | 0x00000933
11-21 12:21:57.359: D/GraphicBufferAllocator(121): 0x40bbb428: 3404.00 KiB | 720 (736) x 1184
| 5 | 0x00000b00
...
11-21 12:21:57.359: D/GraphicBufferAllocator(121): 0x40c06b58: 1279.38 KiB | 720 (736) x 445
| 1 | 0x00000933
11-21 12:21:57.359: D/GraphicBufferAllocator(121): 0x40c0e778: 143.75 KiB | 720 (736)
11-21 12:21:57.359: E/SurfaceFlinger(121): GraphicBufferAlloc::createGraphicBuffer(w=720,
h=1184) failed (Out of memory), handle=0x0
11-21 12:21:57.359: E/BufferQueue(121):
[com.example.va.datasender/com.example.va.datasender.SendData] dequeueBuffer:
SurfaceComposer::createGraphicBuffer failed
11-21 12:21:57.359: E/IMGSRV(4040): :0: DequeueLockStoreBuffer: Failed to de-queue buffer
11-21 12:21:57.359: W/HardwareRenderer(4040): EGL error: EGL_BAD_NATIVE_WINDOW
11-21 12:21:57.375: W/HardwareRenderer(4040): Mountain View, we've had a problem here.
Switching back to software rendering.
...then out of memory errors...
11-21 12:21:57.453: E/SurfaceFlinger(121): GraphicBufferAlloc::createGraphicBuffer(w=720,
h=1184) failed (Out of memory), handle=0x0
11-21 12:21:57.453: E/BufferQueue(121):
[com.example.va.datasender/com.example.va.datasender.SendData] dequeueBuffer:
SurfaceComposer::createGraphicBuffer failed
11-21 12:21:57.453: E/IMGSRV(4040): :0: DequeueLockStoreBuffer: Failed to de-queue buffer
11-21 12:21:57.453: E/libEGL(4040): eglMakeCurrent:534 error 3003 (EGL_BAD_ALLOC)
11-21 12:21:57.460: E/ViewRootImpl(4040): OutOfResourcesException initializing HW surface
11-21 12:21:57.460: E/ViewRootImpl(4040): android.view.Surface$OutOfResourcesException:
eglMakeCurrent failed EGL_BAD_ALLOC
11-21 12:21:57.460: E/ViewRootImpl(4040): at android.view.HardwareRenderer
$GlRenderer.createEglSurface(HardwareRenderer.java:920)
11-21 12:21:57.460: E/ViewRootImpl(4040): at android.view.HardwareRenderer
$GlRenderer.initialize(HardwareRenderer.java:748)
11-21 12:21:57.460: E/ViewRootImpl(4040): at android.view.ViewRootImpl.performTraversals
(ViewRootImpl.java:1505)
11-21 12:21:57.460: E/ViewRootImpl(4040): at android.view.ViewRootImpl.doTraversal
(ViewRootImpl.java:998)
11-21 12:21:57.460: E/ViewRootImpl(4040): at android.view.ViewRootImpl
$TraversalRunnable.run(ViewRootImpl.java:4212)
11-21 12:21:57.460: E/ViewRootImpl(4040): at android.view.Choreographer
$CallbackRecord.run(Choreographer.java:725)
11-21 12:21:57.460: E/ViewRootImpl(4040): at android.view.Choreographer.doCallbacks
(Choreographer.java:555)
11-21 12:21:57.460: E/ViewRootImpl(4040): at android.view.Choreographer.doFrame
(Choreographer.java:525)
11-21 12:21:57.460: E/ViewRootImpl(4040): at android.view.Choreographer
$FrameDisplayEventReceiver.run(Choreographer.java:711)
11-21 12:21:57.460: E/ViewRootImpl(4040): at android.os.Handler.handleCallback
(Handler.java:615)
11-21 12:21:57.460: E/ViewRootImpl(4040): at android.os.Handler.dispatchMessage
(Handler.java:92)
11-21 12:21:57.460: E/ViewRootImpl(4040): at android.os.Looper.loop(Looper.java:137)
11-21 12:21:57.460: E/ViewRootImpl(4040): at android.app.ActivityThread.main
(ActivityThread.java:4745)
11-21 12:21:57.460: E/ViewRootImpl(4040): at java.lang.reflect.Method.invokeNative(Native
Method)
11-21 12:21:57.460: E/ViewRootImpl(4040): at java.lang.reflect.Method.invoke
(Method.java:511)
11-21 12:21:57.460: E/ViewRootImpl(4040): at com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:786)
11-21 12:21:57.460: E/ViewRootImpl(4040): at com.android.internal.os.ZygoteInit.main
(ZygoteInit.java:553)
11-21 12:21:57.460: E/ViewRootImpl(4040): at dalvik.system.NativeStart.main(Native
Method)
11-21 12:21:57.460: I/Process(4040): Sending signal. PID: 4040 SIG: 9
11-21 12:21:57.460: I/WindowManager(2448): Out of memory for surface! Looking for leaks...
11-21 12:21:57.460: W/WindowManager(2448): No leaked surfaces; killing applicatons!
11-21 12:21:57.460: W/ActivityManager(2448): Killing processes Free memory at adjustment 5
11-21 12:21:57.460: W/ViewRootImpl(4040): No processes killed for memory; killing self
11-21 12:21:57.500: I/WindowState(2448): WIN DEATH: Window{41d5aa70
com.example.va.datasender/com.example.va.datasender.SendData paused=false}
11-21 12:21:57.500: W/WindowManager(2448): Due to memory failure, waiting a bit for next layout
11-21 12:21:57.500: W/InputDispatcher(2448): channel '41da3af0
com.example.va.datasender/com.example.va.datasender.SendData (server)' ~ Consumer closed input
channel or an error occurred. events=0x9
11-21 12:21:57.500: E/InputDispatcher(2448): channel '41da3af0
com.example.va.datasender/com.example.va.datasender.SendData (server)' ~ Channel is
unrecoverably broken and will be disposed!
11-21 12:21:57.500: I/ActivityManager(2448): Process com.example.va.datasender (pid 4040) has
died.
11-21 12:21:57.507: W/ActivityManager(2448): Force removing ActivityRecord{41e80dd0
com.example.va.datasender/.SendData}: app died, no saved state
11-21 12:21:57.757: W/InputDispatcher(2448): Attempted to unregister already unregistered input
channel '41da3af0 com.example.va.datasender/com.example.va.datasender.SendData (server)'
11-21 12:21:57.757: I/WindowState(2448): WIN DEATH: Window{41da3af0
com.example.va.datasender/com.example.va.datasender.SendData paused=false}
11-21 12:21:57.773: I/WindowState(2448): WIN DEATH: Window{41deb038
com.example.va.datasender/com.example.va.datasender.SendData paused=false}
11-21 12:21:57.773: I/WindowState(2448): WIN DEATH: Window{41e75500
com.example.va.datasender/com.example.va.datasender.SendData paused=false}
11-21 12:21:57.773: I/WindowState(2448): WIN DEATH: Window{41d296a8
com.example.va.datasender/com.example.va.datasender.SendData paused=false}
11-21 12:21:57.781: I/WindowState(2448): WIN DEATH: Window{41ca39c8
com.example.va.datasender/com.example.va.datasender.SendData paused=false}
11-21 12:21:57.781: I/WindowState(2448): WIN DEATH: Window{41a35a18
com.example.va.datasender/com.example.va.datasender.SendData paused=false}
com.example.va.datasender/com.example.va.datasender.SendData paused=false}
11-21 12:21:57.804: W/InputDispatcher(2448): channel '41caaec8
com.example.va.datasender/com.example.va.datasender.SendData (server)' ~ Consumer closed input
channel or an error occurred. events=0x9
11-21 12:21:57.804: E/InputDispatcher(2448): channel '41caaec8
com.example.va.datasender/com.example.va.datasender.SendData (server)' ~ Channel is
unrecoverably broken and will be disposed!
...then worse errors...
11-21 12:21:57.828: I/WindowState(2448): WIN DEATH: Window{41dd0130
com.example.va.datasender/com.example.va.datasender.SendData paused=false}
11-21 12:21:57.835: E/InputDispatcher(2448): Received spurious receive callback for unknown
input channel. fd=244, events=0x9
11-21 12:21:57.835: E/InputDispatcher(2448): Received spurious receive callback for unknown
input channel. fd=225, events=0x9
11-21 12:21:57.835: E/InputDispatcher(2448): Received spurious receive callback for unknown
input channel. fd=217, events=0x9
11-21 12:21:57.835: E/InputDispatcher(2448): Received spurious receive callback for unknown
input channel. fd=258, events=0x9
11-21 12:21:57.835: E/InputDispatcher(2448): Received spurious receive callback for unknown
input channel. fd=259, events=0x9
11-21 12:21:57.835: E/InputDispatcher(2448): Received spurious receive callback for unknown
input channel. fd=260, events=0x9
...then it crashes...
11-21 12:21:57.843: W/ActivityManager(2448): Force removing ActivityRecord{41714778
com.example.va.datasender/.SendData}: app died, no saved state
11-21 12:21:57.843: W/ActivityManager(2448): Force removing ActivityRecord{41a69f30
com.example.va.datasender/.SendData}: app died, no saved state
11-21 12:21:57.843: W/ActivityManager(2448): Force removing ActivityRecord{41c65b30
com.example.va.datasender/.SendData}: app died, no saved state
11-21 12:21:57.859: D/dalvikvm(4289): Late-enabling CheckJNI
11-21 12:21:57.859: I/ActivityManager(2448): Displayed com.example.va.datasender/.SendData:
+3s356ms (total +3s395ms)
11-21 12:21:57.859: I/ActivityManager(2448): Displayed com.example.va.datasender/.SendData:
+3s149ms
11-21 12:21:57.859: I/ActivityManager(2448): Displayed com.example.va.datasender/.SendData:
+1s657ms
11-21 12:21:57.859: I/ActivityManager(2448): Displayed com.example.va.datasender/.SendData:
+2s540ms
11-21 12:21:57.859: I/ActivityManager(2448): Displayed com.example.va.datasender/.SendData:
+977ms
...leaked surface errors...
11-21 12:21:58.343: W/WindowManager(2448): LEAKED SURFACE (app token hidden): Window{41d2df50
com.example.va.datasender/com.example.va.datasender.SendData paused=false} surface=Surface
(name=com.example.va.datasender/com.example.va.datasender.SendData, identity=1350)
token=AppWindowToken{41cc7c48 token=Token{4198ba08 ActivityRecord{41ca22a8
com.example.va.datasender/.SendData}}}
11-21 12:21:58.343: W/WindowManager(2448): LEAKED SURFACE (app token hidden): Window{41d5e1b0
com.example.va.datasender/com.example.va.datasender.SendData paused=false} surface=Surface
(name=com.example.va.datasender/com.example.va.datasender.SendData, identity=1351)
token=AppWindowToken{41c78878 token=Token{419e78f8 ActivityRecord{41cd1208
com.example.va.datasender/.SendData}}}