我如何可以旋轉，縮放和在Android的ImageView中的形象圖一起拖動，與邊框的Android

Question

我怎麼能進行旋轉，縮放和拖動在一起

Answer 1

你可以嘗試這樣的事情：

package com.my.test; 

import android.app.Activity; 
import android.graphics.Canvas; 
import android.graphics.Rect; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.MotionEvent; 
import android.view.ScaleGestureDetector; 
import android.view.Surface; 
import android.view.SurfaceHolder; 
import android.view.ScaleGestureDetector.OnScaleGestureListener; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.view.View.OnTouchListener; 
import android.view.ViewGroup; 
import android.widget.Button; 
import android.widget.ImageView; 
import android.widget.Toast; 

public class ImageViewActivity extends Activity implements OnClickListener, SurfaceHolder.Callback { 
    ImageView view; 
    final static String TAG = "TAG"; 
    ScaleGestureDetector scaleGestureDetector; 
    Thread mDrawingThread; 

    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     /*PinchImageView view = new PinchImageView(this); 
     view.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 
       ViewGroup.LayoutParams.MATCH_PARENT)); 

     setContentView(view);*/ 
     setContentView(R.layout.main); 
     PinchImageView view = (PinchImageView) findViewById(R.id.image); 
     view.setDrawable(getResources().getDrawable(R.drawable.pic)); 

     Button button = (Button) findViewById(R.id.button1); 
     button.setOnClickListener(this); 
     button = (Button) findViewById(R.id.button2); 
     button.setOnClickListener(this); 
    } 

    @Override 
    public void onClick(View v) { 
     // TODO Auto-generated method stub 
     if(v.getId() == R.id.button1) { 
      PinchImageView view = (PinchImageView) findViewById(R.id.image); 
      view.setDrawable(getResources().getDrawable(R.drawable.pic)); 
     } 
     if(v.getId() == R.id.button2) { 
      PinchImageView view = (PinchImageView) findViewById(R.id.image); 
      view.setDrawable(getResources().getDrawable(R.drawable.penguins)); 
     } 
    } 

    @Override 
    public void surfaceCreated(SurfaceHolder holder) { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public void surfaceChanged(SurfaceHolder holder, int format, int width, 
      int height) { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public void surfaceDestroyed(SurfaceHolder holder) { 
     // TODO Auto-generated method stub 

    } 


} 




/** 
* @author 
* 
*/ 
public class PinchImageView extends SurfaceView { 

    final String TAG = "TAG"; 
    final static int HORIZONTAL_SNAP_GAP = 30; 
    final static int VERTICAL_SNAP_GAP = 50; 
    private static final int INVALID_POINTER_ID = -1; 

    private Drawable mIcon; 
    private float mPosX; 
    private float mPosY; 

    private float mLastTouchX; 
    private float mLastTouchY; 
    private int mActivePointerId = INVALID_POINTER_ID; 

    private ScaleGestureDetector mScaleDetector; 
    private float mScaleFactor = 1.f; 

    public PinchImageView(Context context) { 
     this(context, null, 0); 
    } 

    public PinchImageView(Context context, AttributeSet attrs) { 
     this(context, attrs, 0); 
    } 

    public PinchImageView(Context context, AttributeSet attrs, int defStyle) { 
     super(context, attrs, defStyle); 
     //mIcon = context.getResources().getDrawable(R.drawable.pic); 
     //mIcon.setBounds(0, 0, mIcon.getIntrinsicWidth(), mIcon.getIntrinsicHeight()); 

     mScaleDetector = new ScaleGestureDetector(context, new ScaleListener()); 
    } 

    @Override 
    public boolean onTouchEvent(MotionEvent ev) { 
     // Let the ScaleGestureDetector inspect all events. 
     mScaleDetector.onTouchEvent(ev); 

     final int action = ev.getAction(); 
     switch (action & MotionEvent.ACTION_MASK) { 
     case MotionEvent.ACTION_DOWN: { 
      final float x = ev.getX(); 
      final float y = ev.getY(); 

      mLastTouchX = x; 
      mLastTouchY = y; 
      mActivePointerId = ev.getPointerId(0); 
      break; 
     } 

     case MotionEvent.ACTION_MOVE: { 
      final int pointerIndex = ev.findPointerIndex(mActivePointerId); 
      final float x = ev.getX(pointerIndex); 
      final float y = ev.getY(pointerIndex); 

      // Only move if the ScaleGestureDetector isn't processing a gesture. 
      if (!mScaleDetector.isInProgress()) { 
       final float dx = x - mLastTouchX; 
       final float dy = y - mLastTouchY; 

       mPosX += dx; 
       mPosY += dy; 

       if(mPosX > HORIZONTAL_SNAP_GAP) mPosX = HORIZONTAL_SNAP_GAP; 
       if(mPosY > VERTICAL_SNAP_GAP) mPosY = VERTICAL_SNAP_GAP; 
       Display display = ((WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay(); 
       int displayWidth = display.getWidth(); 
       int displayHeight = display.getHeight(); 
       if(mPosX + mIcon.getBounds().width() < getWidth() - HORIZONTAL_SNAP_GAP) mPosX = getWidth() - HORIZONTAL_SNAP_GAP - mIcon.getBounds().width(); 
       if(mPosY + mIcon.getBounds().height() < getHeight() - VERTICAL_SNAP_GAP) mPosY = getHeight() - VERTICAL_SNAP_GAP - mIcon.getBounds().height(); 

       invalidate(); 
      } 

      mLastTouchX = x; 
      mLastTouchY = y; 

      break; 
     } 

     case MotionEvent.ACTION_UP: { 
      mActivePointerId = INVALID_POINTER_ID; 
      break; 
     } 

     case MotionEvent.ACTION_CANCEL: { 
      mActivePointerId = INVALID_POINTER_ID; 
      break; 
     } 

     case MotionEvent.ACTION_POINTER_UP: { 
      final int pointerIndex = (ev.getAction() & MotionEvent.ACTION_POINTER_INDEX_MASK) 
        >> MotionEvent.ACTION_POINTER_INDEX_SHIFT; 
      final int pointerId = ev.getPointerId(pointerIndex); 
      if (pointerId == mActivePointerId) { 
       // This was our active pointer going up. Choose a new 
       // active pointer and adjust accordingly. 
       final int newPointerIndex = pointerIndex == 0 ? 1 : 0; 
       mLastTouchX = ev.getX(newPointerIndex); 
       mLastTouchY = ev.getY(newPointerIndex); 
       mActivePointerId = ev.getPointerId(newPointerIndex); 
      } 
      /*if(mPosX > 0 || mPosY > 0) { 
       Animation an = new TranslateAnimation(mPosX, 0, mPosY, 0); 
       an.setDuration(2000); 
       an.setRepeatCount(-1); 
       //an.initialize(10, 10, 10, 10); 

       setAnimation(an); 
       an.startNow(); 
       invalidate(); 
      }*/ 
      break; 
     } 
     } 

     return true; 
    } 

    @Override 
    public void onDraw(Canvas canvas) { 
     super.onDraw(canvas); 

     canvas.save(); 
     canvas.translate(mPosX, mPosY); 
     canvas.scale(mScaleFactor, mScaleFactor); 
     if(mIcon != null) mIcon.draw(canvas); 
     canvas.restore(); 
    } 

    private class ScaleListener extends ScaleGestureDetector.SimpleOnScaleGestureListener { 
     @Override 
     public boolean onScale(ScaleGestureDetector detector) { 
      mScaleFactor *= detector.getScaleFactor(); 

      // Don't let the object get too small or too large. 
      mScaleFactor = Math.max(0.1f, Math.min(mScaleFactor, 5.0f)); 

      invalidate(); 
      return true; 
     } 
    } 

    public void setDrawable(Drawable draw) { 
     mIcon = draw; 
     mIcon.setBounds(0, 0, mIcon.getIntrinsicWidth(), mIcon.getIntrinsicHeight()); 
     invalidate(); 
    } 
} 

Answer 2

用於旋轉，縮放和旋轉，try這個。工作100％。