今天,我面临一个奇怪的问题.
我在三个设备上安装了我的应用程序
>华硕transformer Pad Infinity TF700T
>三星I9082 galaxy Grand Duos
> LG Optimus L7 II Dual p715
首先,我使用所有这些设备在DeBUG模式下从Eclipse运行了我的应用程序.没关系
然后,我以通常的方式(在设备上)运行我的应用程序.这样,我所有的坏事就开始了.对于1和2台设备都可以.但是3台设备无法正常工作. LogCat向我显示了以下致命错误：
01-14 01:36:47.529: E/dalvikvm(11294): threadID=1: stuck on
threadID=14, giving up 01-14 01:36:47.529: A/libc(11294): Fatal signal
16 (SIGSTKFLT) at 0x00002c1e (code=-6), thread 11315 (AsyncTask #4)
我真的不明白,这是怎么回事,为什么1和2的设备都能正常工作,而第三个设备却不能.
谁能解释我,这个错误是什么意思,如何纠正？
UPD1我不使用NDK调用和任何第三方库.
UPD2导致错误的大代码段是(我在这里包括所有事件都将调用绘制过程并将其停止)：
//I included all imports for sure that I don't use nothing instead of standard thingsimport java.io.file;import java.io.fileFilter;import java.io.IOException;import java.io.inputStream;import java.util.ArrayList;import java.util.List;import androID.content.broadcastReceiver;import androID.content.Context;import androID.content.Intent;import androID.content.IntentFilter;import androID.content.SharedPreferences;import androID.content.SharedPreferences.OnSharedPreferencechangelistener;import androID.content.res.Configuration;import androID.content.res.Resources;import androID.graphics.Bitmap;import androID.graphics.Bitmap.Config;import androID.graphics.Canvas;import androID.graphics.color;import androID.graphics.Matrix;import androID.graphics.Paint;import androID.graphics.Path;import androID.graphics.Region;import androID.graphics.drawable.Drawable;import androID.os.AsyncTask;import androID.os.Build;import androID.os.Handler;import androID.service.wallpaper.WallpaperService;import androID.util.displayMetrics;import androID.util.Log;import androID.vIEw.display;import androID.vIEw.GestureDetector;import androID.vIEw.GestureDetector.SimpleOnGestureListener;import androID.vIEw.MotionEvent;import androID.vIEw.SurfaceHolder;import androID.vIEw.WindowManager;public class MyliveWallpaper extends WallpaperService { public static final String CONfigS = "configs"; private WallpaperEngine we; @OverrIDe public voID onCreate() { super.onCreate(); } @OverrIDe public voID onDestroy() { super.onDestroy(); if(we.myDrawTask!=null){ we.myDrawTask.cancel(false); } } @OverrIDe public Engine onCreateEngine() { we = new WallpaperEngine(); return we; } //DeviceScreenSize is some class where I just incapsulate screen wIDth, height and depth obtained in getScreenSize() method DeviceScreenSize dss = new DeviceScreenSize(0, 0, 0); class WallpaperEngine extends Engine implements OnSharedPreferencechangelistener { //Some deFinitions below ............................ public DrawTask myDrawTask = null; ............................ //Some deFinitions above WallpaperEngine() { .............. doubleTapDetector = new GestureDetector(HDliveWallpaper.this, new SimpleOnGestureListener() { @OverrIDe public boolean onDoubleTap(MotionEvent e) { if (mtouchEvents) { mLastDrawTime = 0; if(myDrawTask!=null){ myDrawTask.stopAnimationFlag = true; } else{ myDrawTask = new DrawTask(getSurfaceHolder(), mPaint); myDrawTask.execute(); } return true; } return false; } }); } @OverrIDe public voID onCreate(SurfaceHolder surfaceHolder) { super.onCreate(surfaceHolder); // Register receiver for media events IntentFilter filter = new IntentFilter(); filter.addAction(Intent.ACTION_MEDIA_BAD_REMoval); filter.addAction(Intent.ACTION_MEDIA_CHECKING); filter.addAction(Intent.ACTION_MEDIA_MOUNTED); filter.addAction(Intent.ACTION_MEDIA_EJECT); filter.addAction(Intent.ACTION_MEDIA_NOFS); filter.addAction(Intent.ACTION_MEDIA_REMOVED); filter.addAction(Intent.ACTION_MEDIA_SHARED); filter.addAction(Intent.ACTION_MEDIA_UNMOUNTED); filter.addDataScheme("file"); mReceiver = new broadcastReceiver() { @OverrIDe public voID onReceive(Context context, Intent intent) { String action = intent.getAction(); if (action.equals(Intent.ACTION_MEDIA_MOUNTED) || action.equals(Intent.ACTION_MEDIA_CHECKING)) { mStorageReady = true; settouchEventsEnabled(true); if(myDrawTask!=null){ myDrawTask.cancel(false); } myDrawTask = new DrawTask(getSurfaceHolder(), mPaint); myDrawTask.execute(); } else { mStorageReady = false; settouchEventsEnabled(false); if(myDrawTask!=null) myDrawTask.cancel(false); } } }; registerReceiver(mReceiver, filter); // Register receiver for screen on events mScreenOnRecIEver = new broadcastReceiver() { @OverrIDe public voID onReceive(Context context, Intent intent) { System.out.println(Intent.ACTION_SCREEN_ON); if (mScreenWake) { mLastDrawTime = 0; } if(myDrawTask!=null){ myDrawTask.cancel(false); } myDrawTask = new DrawTask(getSurfaceHolder(), mPaint); myDrawTask.execute(); } }; registerReceiver(mScreenOnRecIEver, new IntentFilter(Intent.ACTION_SCREEN_ON)); mScreenOffRecIEver = new broadcastReceiver() { @OverrIDe public voID onReceive(Context context, Intent intent) { System.out.println(Intent.ACTION_SCREEN_OFF); if (mScreenWake) { mLastDrawTime = 0; } if(myDrawTask!=null){ myDrawTask.cancel(false); } } }; registerReceiver(mScreenOffRecIEver, new IntentFilter(Intent.ACTION_SCREEN_OFF)); settouchEventsEnabled(mStorageReady); } @OverrIDe public voID onDestroy() { super.onDestroy(); mPrefs.unregisterOnSharedPreferencechangelistener(this); unregisterReceiver(mReceiver); unregisterReceiver(mScreenOnRecIEver); unregisterReceiver(mScreenOffRecIEver); if(myDrawTask!=null){ myDrawTask.cancel(false); } } @OverrIDe public voID onVisibilityChanged(boolean visible) { mVisible = visible; if (visible) { if(myDrawTask!=null){ myDrawTask.cancel(false); } myDrawTask = new DrawTask(getSurfaceHolder(), mPaint); myDrawTask.execute(); mLastDrawTime = 0; } else { if(myDrawTask!=null){ myDrawTask.cancel(false); } } } @OverrIDe public voID onSurfaceChanged(SurfaceHolder holder, int format, int wIDth, int height) { super.onSurfaceChanged(holder, format, wIDth, height); ..................... if (mBitmap != null) { mBitmap.recycle(); } if(myDrawTask!=null){ myDrawTask.cancel(false); } myDrawTask = new DrawTask(getSurfaceHolder(), mPaint); myDrawTask.execute(); } @OverrIDe public voID onSurfaceCreated(SurfaceHolder holder) { super.onSurfaceCreated(holder); if(myDrawTask!=null){ myDrawTask.cancel(false); } myDrawTask = new DrawTask(getSurfaceHolder(), mPaint); myDrawTask.execute(); mLastDrawTime = 0; } @OverrIDe public voID onSurfaceDestroyed(SurfaceHolder holder) { super.onSurfaceDestroyed(holder); mVisible = false; if(myDrawTask!=null){ myDrawTask.cancel(false); } } @OverrIDe public voID onOffsetsChanged(float xOffset, float yOffset, float xStep, float yStep, int xPixels, int yPixels) { mXOffset = xOffset; mYOffset = yOffset; if(myDrawTask!=null){ myDrawTask.cancel(false); } myDrawTask = new DrawTask(getSurfaceHolder(), mPaint); myDrawTask.execute(); } @OverrIDe public voID ontouchEvent(MotionEvent event) { super.ontouchEvent(event); this.doubleTapDetector.ontouchEvent(event); } public final Bitmap drawabletoBitmap(Drawable drawable) { int targetWIDth = (mScroll) ? mMinWIDth : dss.getWIDth(); int targetHeight = (mScroll) ? mMinHeight : dss.getHeight(); Bitmap bitmap = Bitmap.createBitmap(targetWIDth, targetHeight, Config.ARGB_8888); Canvas canvas = new Canvas(bitmap); drawable.setBounds(0, 0, canvas.getWIDth(), canvas.getHeight()); drawable.draw(canvas); // Rotate ..................... // Scale bitmap ..................... return bitmap; } voID getScreenSize() { WindowManager wm = (WindowManager) getSystemService(Context.WINDOW_SERVICE); display d = wm.getDefaultdisplay(); displayMetrics metrics = new displayMetrics(); d.getMetrics(metrics); // since SDK_INT = 1; dss.setDeviceScreenParams(metrics.wIDthPixels, metrics.heightPixels, metrics.densityDpi); // includes window decorations (statusbar bar/menu bar) if (Build.VERSION.SDK_INT >= 14 && Build.VERSION.SDK_INT < 17) try { dss.setDeviceScreenParams((Integer) display.class.getmethod("getRawWIDth").invoke(d), (Integer) display.class.getmethod("getRawHeight").invoke(d), metrics.densityDpi); } catch (Exception ignored) {} // includes window decorations (statusbar bar/menu bar) if (Build.VERSION.SDK_INT >= 17) try { displayMetrics realSize = new displayMetrics(); display.class.getmethod("getRealMetrics", displayMetrics.class).invoke(d, realSize); dss.setDeviceScreenParams(realSize.wIDthPixels, realSize.heightPixels, realSize.densityDpi); } catch (Exception ignored) {} } // // ************************ // DRAW AND ANIMATION TASK // ************************ // public class DrawTask extends AsyncTask<VoID, VoID, VoID> { private final SurfaceHolder _surfaceHolder; private Paint myPaint; boolean CancelFlag = false, stopAnimationFlag = false; //HANDLERS private final Handler mDrawHandler = new Handler(){ public voID handleMessage(androID.os.Message msg) { }; }; //WORKERS private final Runnable mDrawWorker = new Runnable() { public voID run() { if (mDuration > 0) { drawFrame(); } } }; DrawTask(SurfaceHolder holder, Paint paint){ _surfaceHolder = holder; myPaint = paint; CancelFlag = false; } SurfaceHolder getSurfHolder(){ return _surfaceHolder; } Paint getPaint(){ return myPaint; } @OverrIDe protected voID onPreExecute() { super.onPreExecute(); } @OverrIDe protected VoID doInBackground(VoID... params) { drawFrame(); while(!CancelFlag){} return null; } @OverrIDe protected voID onPostExecute(VoID result) { // Todo auto-generated method stub super.onPostExecute(result); } @OverrIDe protected voID onCancelled() { // Todo auto-generated method stub super.onCancelled(); CancelFlag = true; } voID drawFrame() { final SurfaceHolder holder = _surfaceHolder; Canvas c = null; boolean getimage = false; try { // Lock the canvas for writing c = holder.lockCanvas(); // Do we need to get a new image? if (mBitmap == null) { getimage = true; } else if (mDuration > 0 && mLastDrawTime < System.currentTimeMillis() - mDuration) { getimage = true; } else if (mLastDrawTime == 0) { getimage = true; } // Get image to draw if (getimage) { // Get a List of files String[] assets_files = null; try { assets_files = getApplicationContext().getAssets().List(""); } catch (IOException e) { e.printstacktrace(); } List<String> str_List = new ArrayList<String>(); for (int fi = 0; fi < assets_files.length; fi++) { String ext = BitmapUtil.getExtension(assets_files[fi]); if (ext != null) { if (ext.equals("jpg") || ext.equals("jpeg") || ext.equals("png") || ext.equals("gif")) { str_List.add(assets_files[fi]); } } } assets_files = str_List.toArray(new String[str_List.size()]); // Increment counter int nfiles = assets_files.length; if (mRandom) { int i = mIndex; do { mIndex = (int) (Math.random() * nfiles); } while (nfiles > 1 && mIndex == i); } else { if (++mIndex >= nfiles) { mIndex = 0; } } inputStream ims = null; try { ims = getAssets().open(assets_files[mIndex]); } catch (IOException e) { e.printstacktrace(); } d = Drawable.createFromStream(ims, null); // Read file to bitmap mBitmap=null; mBitmap = drawabletoBitmap(d); // Save the current time mLastDrawTime = System.currentTimeMillis(); } else if (mBitmap != null && mBitmap.isRecycled()){ mBitmap=null; mBitmap = drawabletoBitmap(d); } } catch (NullPointerException npe) { holder.unlockCanvasAndPost(c); return; } catch (RuntimeException re) { holder.unlockCanvasAndPost(c); return; } try { if (c != null) { int xPos; int yPos; if (mScroll) { xPos = 0 - (int) (mWIDth * mXOffset); yPos = 0 - (int) (mHeight * mYOffset); } else { xPos = 0; yPos = 0; } try { c.drawcolor(color.BLACK); c.drawBitmap(mBitmap, xPos, yPos, myPaint); } catch (Throwable t) {} } } finally { if (c != null){ if((mPrevIoUsBitmap==null) || (mPrevIoUsBitmap==mBitmap)) holder.unlockCanvasAndPost(c); else{ if(mTransition!=0) startAnimation(mTransition, holder, c); else holder.unlockCanvasAndPost(c); } mPrevIoUsBitmap=null; mPrevIoUsBitmap = mBitmap; } } // Reschedule the next redraw mDrawHandler.removeCallbacks(mDrawWorker); if (mVisible) { mDrawHandler.postDelayed(mDrawWorker, 1000 / 2); } else{CancelFlag=true;} } voID startAnimation(int animNumber, SurfaceHolder holder, Canvas canvas) { switch(animNumber){ case 1:{ canvas.drawBitmap(mBitmap, 0, 0, myPaint); int tmpPaintAlpha = myPaint.getAlpha(); myPaint.setAlpha(255); canvas.drawBitmap(mPrevIoUsBitmap, 0, 0, myPaint); holder.unlockCanvasAndPost(canvas); myPaint.setAlpha(tmpPaintAlpha); int i=224; while(i>=0){ canvas = holder.lockCanvas(); canvas.drawBitmap(mBitmap, 0, 0, myPaint); myPaint.setAlpha(i); canvas.drawBitmap(mPrevIoUsBitmap, 0, 0, myPaint); holder.unlockCanvasAndPost(canvas); myPaint.setAlpha(255); i-=18; } mLastDrawTime=System.currentTimeMillis(); break; } case 2:{ .................... break; } } } } ................... } ...................}每当我们陷入DrawTask.drawFrame()方法时,即使没有任何通知(mTransition == 0),每次都会发生错误.结果,我看到了：
(1)正确完成初始图像和下一个图像的第一步；
(2)当需要将第二张图像转换为第三张图像时,我只是在不固定的时间段内看到黑屏,然后再次看到我的初始图像并无限重复上述(2).设置的任何更改都不会更改此行为.
UPD3希望我对此问题的详细描述(UPD1,UPD2)可以帮助找到这种奇怪行为的原因.但是,不幸的是,现在不适合我.
预先感谢！
解决方法:
SIGSTKFLT在设备内存不足(尤其是内存不足)时发生.在底层linux OS层中使用malloc()调用时.当OS无法在malloc中返回失败时,它将生成这种致命信号.
当处理图像占用大量内存时,请尝试使用一些内存节省技术(例如后期绑定图像解码)来解决低内存设备上的上述问题.
首先,您可以尝试将图像重新调整为屏幕分辨率或更低的尺寸,然后再将其发布到画布上.
总结以上是内存溢出为你收集整理的致命错误信号16(SIGSTKFLT)已意外发生全部内容，希望文章能够帮你解决致命错误信号16(SIGSTKFLT)已意外发生所遇到的程序开发问题。
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