Question

我已经尝试了所有可以找到的解决方案，但没有一个能够提供帮助。他们中的大多数都在谈论回收位图，这对我来说不是一个选择。我的应用程序在与UI的单独线程中进行一些图像处理，然后我使用绘制在我的图像处理算法返回的位置绘制实心圆。这是我的代码 -

    private Runnable runNetwork = new Runnable() 
  {
    public void run() 
    {
        if(!destroyFlag)
        {
            bProcessing = true;         

            start = SystemClock.elapsedRealtime();
            locations = callTorch(torchState, PreviewSizeWidth, PreviewSizeHeight, FrameData,networkLoop); 
            stop = SystemClock.elapsedRealtime();
            wholeLoop = (float) ((stop-start)*0.001);
            fps = 1/wholeLoop;
            start = SystemClock.elapsedRealtime();

            if(locations[0] != 0)
            {
                bitmap.eraseColor(0);
                for(int i = 0; i < locations.length; i+=4)
                {
                    if(locations[i+2] != 0)
                    {
                        mCanvas.drawCircle(locations[i], locations[i+1], 10, p);
                        mCanvas.drawText("Face", locations[i], locations[i+1]+15, p);

                    }
                }
            }
            else
                bitmap.eraseColor(0);

            MycameraClass.setImageBitmap(bitmap);
            stop = SystemClock.elapsedRealtime();
            displayLoop = (float) ((stop-start) * 0.001);

            networkPercentage = (networkLoop/wholeLoop)*100;

            CameraActivity.detailsText.setText("****Profiling information****\n" + "Time for network = " + networkLoop + " s\nTime for whole loop = " +
                        wholeLoop + " s\nNetwork takes " + networkPercentage + "% of computation time" + "\nTime for display = " + displayLoop + "s \nFrame rate =" + fps);

            bProcessing = false;
        }
    }
  };

我重复使用相同的位图来绘制，所以我无法回收它。这有什么原因导致内存泄漏吗？这也是一个非常糟糕的。我的应用程序在崩溃之前几乎不能运行半分钟。

编辑：更多代码片段与位图创建相关

 public class CameraClass implements SurfaceHolder.Callback, Camera.PreviewCallback
 {
    private Camera mCamera = null;
private ImageView MycameraClass = null;
    public Bitmap bitmap = null;
private int[] pixels = null;
private byte[] FrameData = null;
private int imageFormat;
private int PreviewSizeWidth;
private int PreviewSizeHeight;
private boolean bProcessing = false;
float start, stop, networkLoop, wholeLoop, fps, displayLoop, networkPercentage = 0;
Handler mHandler = new Handler(Looper.getMainLooper());
public long torchState = 0;
private boolean destroyFlag = false;
Paint p = new Paint();
Canvas mCanvas;
int[] locations;

public CameraClass(int PreviewlayoutWidth, int PreviewlayoutHeight, ImageView cameraClass)
{
    PreviewSizeWidth = PreviewlayoutWidth;
    PreviewSizeHeight = PreviewlayoutHeight;
    MycameraClass = cameraClass;
    bitmap = Bitmap.createBitmap(1280, 768, Bitmap.Config.ARGB_8888);
    mCanvas = new Canvas(bitmap);
    p.setAntiAlias(true);
    p.setColor(Color.RED);
    p.setStrokeWidth((float)15.0);
    p.setTextSize(100);
}

上面是创建位图的类。这个类是从下面显示的Activity中调用的 -

public class CameraActivity extends Activity
{

private FrameLayout mainLayout;
private ImageView MyCameraClass = null;
private CameraClass camPreview;
private int PreviewSizeWidth, PreviewSizeHeight;
static AssetManager assetManager;
static TextView detailsText;
Button back;

public void onCreate(Bundle savedInstanceState) 
{
    super.onCreate(savedInstanceState);

    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,  
              WindowManager.LayoutParams.FLAG_FULLSCREEN);

    requestWindowFeature(Window.FEATURE_NO_TITLE);  

    assetManager = getAssets();

    setContentView(R.layout.activity_camera);

    back = (Button) findViewById(R.id.back);
    back.setOnClickListener(buttonHandler);

    detailsText = (TextView) this.findViewById(R.id.details);

    MyCameraClass = new ImageView(this);

    SurfaceView camView = new SurfaceView(this);
    SurfaceHolder camHolder = camView.getHolder();

    PreviewSizeWidth = MainActivity.width;
    PreviewSizeHeight = MainActivity.height;

    camPreview = new CameraClass(PreviewSizeWidth, PreviewSizeHeight, MyCameraClass);
    camHolder.addCallback(camPreview);

    camHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

    mainLayout = (FrameLayout) findViewById(R.id.frameLayout);
    mainLayout.addView(camView, new LayoutParams(1280, 768));
    mainLayout.addView(MyCameraClass, new LayoutParams(1280, 768));

}

Android Bitmap导致内存泄漏？

0 个答案: