我正在使用以下课程并获得我在问题底部粘贴的错误。我在谷歌搜索了很多，很多人有同样的问题，但不同之处在于我只在三星S8（Android v 7.0）中获得此问题，而在任何其他任何版本的设备上都没有。我该如何解决这个问题？
类别：
public class ScratchView extends SurfaceView implements ScratchMethods, SurfaceHolder.Callback {
// default value constants
private final int DEFAULT_COLOR = 0xff444444; // default color is dark gray
List<Path> mPathList = new ArrayList<Path>();
private Context mContext;
private WScratchViewThread mThread;
private int mOverlayColor;
private Paint mOverlayPaint;
private boolean mIsScratchable = true;
private boolean mIsAntiAlias = false;
private Path path;
private float startX = 0;
private float startY = 0;
private float startX_old = 0;
private float startY_old = 0;
private boolean mScratchStart = false;
private boolean firstTouch = false;
private boolean secondTouch = false;
private float Y4suit = 0;
private float X4value = 0;
private float Y4value = 0;
private float mScreenHeight = 0;
private float mScreenWidth = 0;
private int sizeFINGER;
public ScratchView(Context ctx, AttributeSet attrs) {
super(ctx, attrs);
init(ctx, attrs);
}
public ScratchView(Context context) {
super(context);
init(context, null);
}
private void init(Context context, AttributeSet attrs) {
mContext = context;
// default value
mOverlayColor = DEFAULT_COLOR;
sizeFINGER = MagicTrickSharedPreference.getInstance(context).getScratchValue() + Constants.DEFAULT_SCRATCH_ADDITION;
TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.WScratchView, 0, 0);
final int indexCount = ta.getIndexCount();
for (int i = 0; i < indexCount; i++) {
int attr = ta.getIndex(i);
switch (attr) {
case R.styleable.WScratchView_overlayColor:
mOverlayColor = ta.getColor(attr, DEFAULT_COLOR);
break;
case R.styleable.WScratchView_revealSize:
//sizeFINGER = ta.getDimensionPixelSize(attr, 50);
break;
case R.styleable.WScratchView_antiAlias:
mIsAntiAlias = ta.getBoolean(attr, false);
break;
case R.styleable.WScratchView_scratchable:
mIsScratchable = ta.getBoolean(attr, true);
break;
}
}
setZOrderOnTop(true);
SurfaceHolder holder = getHolder();
holder.addCallback(this);
holder.setFormat(PixelFormat.TRANSPARENT);
mOverlayPaint = new Paint();
mOverlayPaint.setXfermode(new PorterDuffXfermode(Mode.CLEAR));
mOverlayPaint.setStyle(Paint.Style.STROKE);
mOverlayPaint.setStrokeCap(Paint.Cap.ROUND);
mOverlayPaint.setStrokeJoin(Paint.Join.ROUND);
DisplayMetrics dm = getResources().getDisplayMetrics();
mScreenHeight = dm.heightPixels;
mScreenWidth = dm.widthPixels;
}
@Override
public void onDraw(Canvas canvas) {
canvas.drawColor(mOverlayColor);
//Bitmap icon = BitmapFactory.decodeResource(getResources(),R.drawable.ic_launcher);
//canvas.drawBitmap(icon, 100, 100, new Paint());
for (Path path : mPathList) {
mOverlayPaint.setAntiAlias(mIsAntiAlias);
mOverlayPaint.setStrokeWidth(sizeFINGER);
canvas.drawPath(path, mOverlayPaint);
}
//icon.recycle();
//System.gc();
}
@Override
public boolean onTouchEvent(MotionEvent me) {
synchronized (mThread.getSurfaceHolder()) {
if (!mIsScratchable) {
return true;
}
switch (me.getAction()) {
case MotionEvent.ACTION_DOWN:
path = new Path();
path.moveTo(me.getX(), me.getY());
startX = me.getX();
startY = me.getY();
startX_old = me.getX();
startY_old = me.getY();
mPathList.add(path);
break;
case MotionEvent.ACTION_MOVE:
if (mScratchStart) {
if (isScratch(startX_old, me.getX(), startY_old, me.getY())) {
startX_old = me.getX();
startY_old = me.getY();
path.lineTo(me.getX(), me.getY());
}
} else {
if (isScratch(startX, me.getX(), startY, me.getY())) {
mScratchStart = true;
path.lineTo(me.getX(), me.getY());
}
}
break;
case MotionEvent.ACTION_UP:
mScratchStart = false;
break;
}
return true;
}
}
private boolean isScratch(float oldX, float x, float oldY, float y) {
float distance = (float) Math.sqrt(Math.pow(oldX - x, 2) + Math.pow(oldY - y, 2));
if (distance > 20) {
return true;
} else {
return false;
}
}
@Override
public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {
// do nothing
}
@Override
public void surfaceCreated(SurfaceHolder arg0) {
mThread = new WScratchViewThread(getHolder(), this);
mThread.setRunning(true);
mThread.start();
}
@Override
public void surfaceDestroyed(SurfaceHolder arg0) {
boolean retry = true;
mThread.setRunning(false);
while (retry) {
try {
mThread.join();
retry = false;
} catch (InterruptedException e) {
// do nothing but keep retry
}
}
}
@Override
public void resetView() {
synchronized (mThread.getSurfaceHolder()) {
firstTouch = false;
secondTouch = false;
mPathList.clear();
}
}
@Override
public boolean isScratchable() {
return mIsScratchable;
}
@Override
public void setScratchable(boolean flag) {
mIsScratchable = flag;
}
@Override
public void setOverlayColor(int ResId) {
mOverlayColor = ResId;
}
@Override
public void setRevealSize(int size) {
sizeFINGER = size;
}
@Override
public void setAntiAlias(boolean flag) {
mIsAntiAlias = flag;
}
class WScratchViewThread extends Thread {
private SurfaceHolder mSurfaceHolder;
private ScratchView mView;
private boolean mRun = false;
public WScratchViewThread(SurfaceHolder surfaceHolder, ScratchView view) {
mSurfaceHolder = surfaceHolder;
mView = view;
}
public void setRunning(boolean run) {
mRun = run;
}
public SurfaceHolder getSurfaceHolder() {
return mSurfaceHolder;
}
public void run() {
Canvas c;
while (mRun) {
c = null;
try {
//c = mSurfaceHolder.lockCanvas(null);
c = mSurfaceHolder.lockCanvas();
synchronized (mSurfaceHolder) {
if (c != null) {
mView.draw(c);
}
}
} finally {
if (c != null) {
mSurfaceHolder.unlockCanvasAndPost(c);
}
}
}
}
}
}
错误：
08-07 12：02：28.875 3251-3259 /？ E / BufferQueueProducer：[SurfaceView - com.test.tmp / main.ScratchIt] dequeueBuffer：BufferQueue已经 弃
08-07 12：02：28.877 12681-12714 / com.test.tmp E / Surface：dequeueBuffer 失败（没有这样的设备）
08-07 12：02：28.877 12681-12714 / com.test.tmp E / SurfaceHolder：异常 锁定表面
java.lang.IllegalArgumentException异常
在android.view.Surface.nativeLockCanvas（原生方法）
在android.view.Surface.lockCanvas（Surface.java:322）
在 android.view.SurfaceView $ 4.internalLockCanvas（SurfaceView.java:1046）
在android.view.SurfaceView $ 4.lockCanvas（SurfaceView.java:1034）
在 magictrick.trick.ScratchView $ WScratchViewThread.run（ScratchView.java:252）