私はこのコードを持っています
public void DetectFacesInImage(View view)
{
BitmapFactory.Options bitmapFactoryOptions=new BitmapFactory.Options();
bitmapFactoryOptions.inPreferredConfig= Bitmap.Config.RGB_565;
//int resID = getResources().getIdentifier(picturePath , "drawable", getPackageName());
myBitmap=BitmapFactory.decodeFile(picturePath,bitmapFactoryOptions);
int width=myBitmap.getWidth();
int height=myBitmap.getHeight();
detectedFaces=new FaceDetector.Face[number_of_faces];
FaceDetector faceDetector=new FaceDetector(width,height,number_of_faces);
number_of_faces_detected = faceDetector.findFaces(myBitmap, detectedFaces);
Canvas canvas = new Canvas(myBitmap);// line 70 the point where it crashes
Paint paint = new Paint(Paint.FILTER_BITMAP_FLAG);
//canvas.drawBitmap(overlay, 0, 0, paint);
paint.setColor(Color.GREEN);
paint.setStyle(Paint.Style.STROKE);
paint.setStrokeWidth(3);
PointF midPoint=new PointF();
for(int count=0;count<number_of_faces_detected;count++)
{
Face face=detectedFaces[count];
face.getMidPoint(midPoint);
float eyeDistance=face.eyesDistance();
canvas.drawRect(midPoint.x-eyeDistance, midPoint.y-eyeDistance, midPoint.x+eyeDistance, midPoint.y+eyeDistance, paint);
}
}
ビットマップの上に四角形を描きたい。ビットマップはインテントを介して受信され、このように使用されます
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_detect_faces);
// getActionBar().setDisplayHomeAsUpEnabled(true);
Intent intent = getIntent();
ImageView imageView = (ImageView) findViewById(R.id.imgView);
picturePath = intent.getStringExtra(GetFaceActivity.PICTURE_PATH);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
//imageView.setOnTouchListener(this);
}
ただし、キャンバス コンストラクターに渡された Immutable bitmap というエラーでコードがクラッシュしています。ここで何が間違っていますか?
ここにスタックトレースがあります
10-14 20:01:34.763: E/AndroidRuntime(31137): FATAL EXCEPTION: main
10-14 20:01:34.763: E/AndroidRuntime(31137): java.lang.IllegalStateException: Could not execute method of the activity
10-14 20:01:34.763: E/AndroidRuntime(31137): at android.view.View$1.onClick(View.java:3098)
10-14 20:01:34.763: E/AndroidRuntime(31137): at android.view.View.performClick(View.java:3620)
10-14 20:01:34.763: E/AndroidRuntime(31137): at android.view.View$PerformClick.run(View.java:14322)
10-14 20:01:34.763: E/AndroidRuntime(31137): at android.os.Handler.handleCallback(Handler.java:605)
10-14 20:01:34.763: E/AndroidRuntime(31137): at android.os.Handler.dispatchMessage(Handler.java:92)
10-14 20:01:34.763: E/AndroidRuntime(31137): at android.os.Looper.loop(Looper.java:137)
10-14 20:01:34.763: E/AndroidRuntime(31137): at android.app.ActivityThread.main(ActivityThread.java:4507)
10-14 20:01:34.763: E/AndroidRuntime(31137): at java.lang.reflect.Method.invokeNative(Native Method)
10-14 20:01:34.763: E/AndroidRuntime(31137): at java.lang.reflect.Method.invoke(Method.java:511)
10-14 20:01:34.763: E/AndroidRuntime(31137): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:978)
10-14 20:01:34.763: E/AndroidRuntime(31137): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:745)
10-14 20:01:34.763: E/AndroidRuntime(31137): at dalvik.system.NativeStart.main(Native Method)
10-14 20:01:34.763: E/AndroidRuntime(31137): Caused by: java.lang.reflect.InvocationTargetException
10-14 20:01:34.763: E/AndroidRuntime(31137): at java.lang.reflect.Method.invokeNative(Native Method)
10-14 20:01:34.763: E/AndroidRuntime(31137): at java.lang.reflect.Method.invoke(Method.java:511)
10-14 20:01:34.763: E/AndroidRuntime(31137): at android.view.View$1.onClick(View.java:3093)
10-14 20:01:34.763: E/AndroidRuntime(31137): ... 11 more
10-14 20:01:34.763: E/AndroidRuntime(31137): Caused by: java.lang.IllegalStateException: Immutable bitmap passed to Canvas constructor
10-14 20:01:34.763: E/AndroidRuntime(31137): at android.graphics.Canvas.<init>(Canvas.java:133)
10-14 20:01:34.763: E/AndroidRuntime(31137): at com.example.face_tag_upload.DetectFaces.DetectFacesInImage(DetectFaces.java:70)
10-14 20:01:34.763: E/AndroidRuntime(31137): ... 14 more