我正在开发一个检测黄色物体的应用程序，每当检测到该物体时，它就会说出检测到的物体。这是我的代码：
package org.opencv.samples.imagemanipulations;
import org.opencv.android.BaseLoaderCallback;
import org.opencv.android.CameraBridgeViewBase.CvCameraViewFrame;
import org.opencv.android.LoaderCallbackInterface;
import org.opencv.android.OpenCVLoader;
import org.opencv.core.Mat;
import org.opencv.core.Size;
import org.opencv.android.CameraBridgeViewBase;
import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.speech.tts.TextToSpeech;
import android.speech.tts.TextToSpeech.OnInitListener;
import android.util.Log;
import android.view.WindowManager;
public abstract class ImageManipulationsActivity extends Activity implements CvCameraViewListener2, TextToSpeech.OnInitListener {
private static final String TAG = "OCVSample::Activity";
private CameraBridgeViewBase mOpenCvCameraView;
private Mat mRgba;
int count = 0;
int a=0;
int b=0;
int c=0;
private TextToSpeech myTTS;
private int MY_DATA_CHECK_CODE = 0;
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
@Override
public void onManagerConnected(int status) {
switch (status) {
case LoaderCallbackInterface.SUCCESS:
{
Log.i(TAG, "OpenCV loaded successfully");
mOpenCvCameraView.enableView();
} break;
default:
{
super.onManagerConnected(status);
} break;
}
}
};
public ImageManipulationsActivity() {
Log.i(TAG, "Instantiated new " + this.getClass());
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
Log.i(TAG, "called onCreate");
super.onCreate(savedInstanceState);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
setContentView(R.layout.image_manipulations_surface_view);
myTTS= new TextToSpeech(this,this);
Intent checkTTSIntent = new Intent();
checkTTSIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
startActivityForResult(checkTTSIntent, MY_DATA_CHECK_CODE);
mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.image_manipulations_activity_surface_view);
mOpenCvCameraView.setCvCameraViewListener(this);
}
@Override
public void onPause()
{
super.onPause();
if (mOpenCvCameraView != null)
mOpenCvCameraView.disableView();
}
@Override
public void onResume()
{
super.onResume();
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_3, this, mLoaderCallback);
}
public void onDestroy() {
super.onDestroy();
if (mOpenCvCameraView != null)
mOpenCvCameraView.disableView();
}
public void onCameraViewStarted(int width, int height) {
mRgba = new Mat();
new Size();
new Mat();
}
public void onCameraViewStopped() {
// Explicitly deallocate Mats
if (mRgba != null)
mRgba.release();
mRgba = null;
}
public Mat onCameraFrame(CvCameraViewFrame inputFrame) {
mRgba = inputFrame.rgba();
Size s=mRgba.size();
for (int i = 0; i < s.height; i++) {
for (int j = 0; j < s.width; j++) {
double[] rgb=mRgba.get(i,j);
a=(int) rgb[0];
b=(int) rgb[1];
c=(int) rgb[2];
if ((a>=225) && (a<=240) && (b>=215) && (b<= 230) && (c>=90) && (c<= 150)) {
count=count++;
}
}
}
if (count>1000) {
myTTS.speak("object detected", TextToSpeech.QUEUE_FLUSH, null);
}
return mRgba;
}
}
我在 logcat 中收到以下错误。请帮我解决这个问题：
07-15 23:22:56.733: E/AndroidRuntime(13661): FATAL EXCEPTION: main
07-15 23:22:56.733: E/AndroidRuntime(13661): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{org.opencv.samples.imagemanipulations/org.opencv.samples.imagemanipulations.ImageManipulationsActivity}: java.lang.InstantiationException: can't instantiate class org.opencv.samples.imagemanipulations.ImageManipulationsActivity
07-15 23:22:56.733: E/AndroidRuntime(13661): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2034)
07-15 23:22:56.733: E/AndroidRuntime(13661): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135)
07-15 23:22:56.733: E/AndroidRuntime(13661): at android.app.ActivityThread.access$700(ActivityThread.java:140)
07-15 23:22:56.733: E/AndroidRuntime(13661): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)
07-15 23:22:56.733: E/AndroidRuntime(13661): at android.os.Handler.dispatchMessage(Handler.java:99)
07-15 23:22:56.733: E/AndroidRuntime(13661): at android.os.Looper.loop(Looper.java:137)
07-15 23:22:56.733: E/AndroidRuntime(13661): at android.app.ActivityThread.main(ActivityThread.java:4921)
07-15 23:22:56.733: E/AndroidRuntime(13661): at java.lang.reflect.Method.invokeNative(Native Method)
07-15 23:22:56.733: E/AndroidRuntime(13661): at java.lang.reflect.Method.invoke(Method.java:511)
07-15 23:22:56.733: E/AndroidRuntime(13661): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1027)
07-15 23:22:56.733: E/AndroidRuntime(13661): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)
07-15 23:22:56.733: E/AndroidRuntime(13661): at dalvik.system.NativeStart.main(Native Method)
07-15 23:22:56.733: E/AndroidRuntime(13661): Caused by: java.lang.InstantiationException: can't instantiate class org.opencv.samples.imagemanipulations.ImageManipulationsActivity
07-15 23:22:56.733: E/AndroidRuntime(13661): at java.lang.Class.newInstanceImpl(Native Method)
07-15 23:22:56.733: E/AndroidRuntime(13661): at java.lang.Class.newInstance(Class.java:1319)
07-15 23:22:56.733: E/AndroidRuntime(13661): at android.app.Instrumentation.newActivity(Instrumentation.java:1068)
07-15 23:22:56.733: E/AndroidRuntime(13661): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2025)
07-15 23:22:56.733: E/AndroidRuntime(13661): ... 11 more