android photoview 图片放大缩放功能 ImageView

将lib  添加进来

贴出 photoview的代码：

/*******************************************************************************

• Copyright 2011, 2012 Chris Banes.

• Licensed under the Apache License, Version 2.0 (the “License”);

• you may not use this file except in compliance with the License.

• You may obtain a copy of the License at

• http://www.apache.org/licenses/LICENSE-2.0

• Unless required by applicable law or agreed to in writing, software

• distributed under the License is distributed on an “AS IS” BASIS,

• WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

• See the License for the specific language governing permissions and

• limitations under the License.

*******************************************************************************/

package uk.co.senab.photoview;

import android.content.Context;

import android.graphics.Bitmap;

import android.graphics.Matrix;

import android.graphics.RectF;

import android.graphics.drawable.Drawable;

import android.net.Uri;

import android.util.AttributeSet;

import android.view.GestureDetector;

import android.widget.ImageView;

import uk.co.senab.photoview.PhotoViewAttacher.OnMatrixChangedListener;

import uk.co.senab.photoview.PhotoViewAttacher.OnPhotoTapListener;

import uk.co.senab.photoview.PhotoViewAttacher.OnViewTapListener;

public class PhotoView extends ImageView implements IPhotoView {

private final PhotoViewAttacher mAttacher;

private ScaleType mPendingScaleType;

public PhotoView(Context context) {

this(context, null);

}

public PhotoView(Context context, AttributeSet attr) {

this(context, attr, 0);

}

public PhotoView(Context context, AttributeSet attr, int defStyle) {

super(context, attr, defStyle);

super.setScaleType(ScaleType.MATRIX);

mAttacher = new PhotoViewAttacher(this);

if (null != mPendingScaleType) {

setScaleType(mPendingScaleType);

mPendingScaleType = null;

}

}

/**

• @deprecated use {@link #setRotationTo(float)}

*/

@Override

public void setPhotoViewRotation(float rotationDegree) {

mAttacher.setRotationTo(rotationDegree);

}

@Override

public void setRotationTo(float rotationDegree) {

mAttacher.setRotationTo(rotationDegree);

}

@Override

public void setRotationBy(float rotationDegree) {

mAttacher.setRotationBy(rotationDegree);

}

@Override

public boolean canZoom() {

return mAttacher.canZoom();

}

@Override

public RectF getDisplayRect() {

return mAttacher.getDisplayRect();

}

@Override

public Matrix getDisplayMatrix() {

return mAttacher.getDrawMatrix();

}

@Override

public boolean setDisplayMatrix(Matrix finalRectangle) {

return mAttacher.setDisplayMatrix(finalRectangle);

}

@Override

@Deprecated

public float getMinScale() {

return getMinimumScale();

}

@Override

public float getMinimumScale() {

return mAttacher.getMinimumScale();

}

@Override

@Deprecated

public float getMidScale() {

return getMediumScale();

}

@Override

public float getMediumScale() {

return mAttacher.getMediumScale();

}

@Override

@Deprecated

public float getMaxScale() {

return getMaximumScale();

}

@Override

public float getMaximumScale() {

return mAttacher.getMaximumScale();

}

@Override

public float getScale() {

return mAttacher.getScale();

}

@Override

public ScaleType getScaleType() {

return mAttacher.getScaleType();

}

@Override

public void setAllowParentInterceptOnEdge(boolean allow) {

mAttacher.setAllowParentInterceptOnEdge(allow);

}

@Override

@Deprecated

public void setMinScale(float minScale) {

setMinimumScale(minScale);

}

@Override

public void setMinimumScale(float minimumScale) {

mAttacher.setMinimumScale(minimumScale);

}

@Override

@Deprecated

public void setMidScale(float midScale) {

setMediumScale(midScale);

}

@Override

public void setMediumScale(float mediumScale) {

mAttacher.setMediumScale(mediumScale);

}

@Override

@Deprecated

public void setMaxScale(float maxScale) {

setMaximumScale(maxScale);

}

@Override

public void setMaximumScale(float maximumScale) {

mAttacher.setMaximumScale(maximumScale);

}

@Override

// setImageBitmap calls through to this method

public void setImageDrawable(Drawable drawable) {

super.setImageDrawable(drawable);

if (null != mAttacher) {

mAttacher.update();

}

}

@Override

public void setImageResource(int resId) {

super.setImageResource(resId);

if (null != mAttacher) {

mAttacher.update();

}

}

@Override

public void setImageURI(Uri uri) {

super.setImageURI(uri);

if (null != mAttacher) {

mAttacher.update();

}

}

@Override

public void setOnMatrixChangeListener(OnMatrixChangedListener listener) {

mAttacher.setOnMatrixChangeListener(listener);

}

@Override

public void setOnLongClickListener(OnLongClickListener l) {

mAttacher.setOnLongClickListener(l);

}

@Override

public void setOnPhotoTapListener(OnPhotoTapListener listener) {

mAttacher.setOnPhotoTapListener(listener);

}

@Override

public OnPhotoTapListener getOnPhotoTapListener() {

return mAttacher.getOnPhotoTapListener();

}

@Override

public void setOnViewTapListener(OnViewTapListener listener) {

mAttacher.setOnViewTapListener(listener);

}

@Override

public OnViewTapListener getOnViewTapListener() {

return mAttacher.getOnViewTapListener();

}

@Override

public void setScale(float scale) {

mAttacher.setScale(scale);

}

@Override

public void setScale(float scale, boolean animate) {

mAttacher.setScale(scale, animate);

}

@Override

public void setScale(float scale, float focalX, float focalY, boolean animate) {

mAttacher.setScale(scale, focalX, focalY, animate);

}

@Override

public void setScaleType(ScaleType scaleType) {

if (null != mAttacher) {

mAttacher.setScaleType(scaleType);

} else {

mPendingScaleType = scaleType;

}

}

@Override

public void setZoomable(boolean zoomable) {

mAttacher.setZoomable(zoomable);

}

@Override

public Bitmap getVisibleRectangleBitmap() {

return mAttacher.getVisibleRectangleBitmap();

}

@Override

public void setZoomTransitionDuration(int milliseconds) {

mAttacher.setZoomTransitionDuration(milliseconds);

}