android – 应用程序自动退出,没有任何警告或错误

我使用tesseract Library开发了OCR应用程序,

应用程序在执行以下代码时退出：

/*...
... Other Code stuff
...*/
    protected Boolean doInBackground(String... arg0) {

    /*...
    ... Other Code stuff
    ...*/
    Pix pix = getPixFromBitmap(bitmap);
    pix = preprocess(pix);
    Pixa pixa = slice(pix); // Code Updated

    try {
        baseApi.setPageSegMode(TessBaseAPI.PSM_SINGLE_LINE);

        int num = pixa.size();

        for (int i = 0; i < num; i++) {
            Pix pixi = pixa.getPix(i);

            /*...
            ... Other Code stuff
            ...*/
        }
        pixa.recycle();
        baseApi.end();

    } catch (RuntimeException e) {
Log.e("OcrRecognizeAsyncTask","Caught RuntimeException in request to Tesseract. Setting state to CONTINUOUS_STOPPED.");
        e.printstacktrace();
        try {
            // baseApi.clear();
            activity.stopHandler();
        } catch (NullPointerException e1) {
            // Continue
        }
        return false;
    }

    private Pixa slice(Pix pix) {
    HydrogenTextDetector htd = new HydrogenTextDetector();
    HydrogenTextDetector.Parameters hydrogenParams = htd.getParameters();
    hydrogenParams.debug = false;
    hydrogenParams.skew_enabled = true;
    htd.setParameters(hydrogenParams);

    htd.setSourceImage(pix);
    pix.recycle();
    htd.detectText();
    Pixa unsorted = htd.getTextAreas();
    Pixa pixa = unsorted.sort(Constants.L_SORT_BY_X,Constants.L_SORT_DECREASING);
    unsorted.recycle();
    htd.clear();
    return pixa;
}

Logcat详细信息如下：

02-23 13:37:09.986: I/WindowManager(102): Setting rotation to 0,animFlags=1
02-23 13:37:10.006: I/ActivityManager(102): Config changed: { scale=1.0 imsi=405/30 loc=en_IN touch=3 keys=1/1/2 nav=3/1 orien=1 layout=17 uiMode=17 seq=33}
02-23 13:37:10.116: I/UsageStats(102): Unexpected resume of com.htc.launcher while  already resumed in edu.sfsu.cs.orange.ocr
02-23 13:37:10.816: W/InputManagerService(102): Got remoteexception sending setActive(false) notification to pid 4880 uid 10062

我将Bitmap转换为Leptonica Pix对象而不是Pix转换为Leptonica Pixa对象,而不是进行OCR重组.

在处理过程中,有时OCR重组成功完成,有时Android主屏幕自动进入.

我不知道背后的问题是什么,为什么会发出remoteexception警告？

请帮我解决这个问题.

谢谢,

最佳答案

你不能在AsyncTask之间结束baseApi.这是你遇到崩溃问题的问题.

您使用了以下代码,

pixa.recycle();
baseApi.end();

评论以下行,然后尝试运行该应用程序,它可以解决您的问题.

pixa.recycle();
// baseApi.end();

================================================== ================================

自动清除堆内存您可以实现以下代码：

public void onCreate(Bundle savedInstanceState) {
{
    clearMemoryCountDownTimer mClearMemoryCountDownTimer = new clearMemoryCountDownTimer(5000,5000).start();
}
private class clearMemoryCountDownTimer extends CountDownTimer {

    public clearMemoryCountDownTimer(long millisInFuture,long countDownInterval) {
        super(millisInFuture,countDownInterval);
    }

    @Override
    public void onFinish() {
        start();
        Log.i(TAG,"Timer Finished");
    }

    @Override
    public void onTick(long millisUntilFinished) {
        if (Debug.getNativeHeapFreeSize() < 100000) {
            clearMemory();
            Log.i(TAG,"requiredClearMemory");
        }
        Log.i(TAG,"getNativeHeapSize : " + Debug.getNativeHeapSize());
        Log.i(TAG,"getNativeHeapFreeSize : " + Debug.getNativeHeapFreeSize());
        Log.i(TAG,"getNativeHeapAllocatedSize : "
                        + Debug.getNativeHeapAllocatedSize());

    }

    void clearMemory() {
        Log.i(TAG,"System.gc()-Start");
        System.gc();
        Log.i(TAG,"System.gc()-End");
    }
}