Edit Question - KnowledgeHub

Title Body

I have a little problem with my app. I have just implemented pinch zoom, but when I pinch to zoom, the image does not scale at the centre of the 2 points as displayed in the images below. Image 1 is where my fingers are before pinching and image 2 is to display that it has not scaled out at the centre of my fingers like it should. Image 1 vs Image 2: Here is my code: package com.jpiionefourone.guitarimage; import android.content.Context; import android.graphics.Canvas; import android.graphics.drawable.Drawable; import android.util.AttributeSet; import android.view.MotionEvent; import android.view.ScaleGestureDetector; import android.view.View; public class MultiTouchView extends View { private Drawable mIcon; private float mPosX; private float mPosY; private float mLastTouchX; private float mLastTouchY; private static final int INVALID_POINTER_ID = -1; // The ‘active pointer’ is the one currently moving our object. private int mActivePointerId = INVALID_POINTER_ID; private ScaleGestureDetector mScaleDetector; private float mScaleFactor = 1.f; public MultiTouchView(Context context) { this(context, null, 0); } public MultiTouchView(Context context, AttributeSet attrs) { this(context, attrs, 0); } public MultiTouchView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); mIcon = context.getResources().getDrawable(R.drawable.guitar); mIcon.setBounds(0, 0, mIcon.getIntrinsicWidth(), mIcon.getIntrinsicHeight()); // Create our ScaleGestureDetector mScaleDetector = new ScaleGestureDetector(context,

Tags (comma-separated) Cancel