Example usage for android.widget ImageView setDrawingCacheEnabled

Introduction

In this page you can find the example usage for android.widget ImageView setDrawingCacheEnabled.

Prototype

@Deprecated
public void setDrawingCacheEnabled(boolean enabled) 

Source Link

Document

Enables or disables the drawing cache.

Usage

From source file:com.mooc.viewpage_photoview_circleindicator.photoview.PhotoViewAttacher.java

public PhotoViewAttacher(ImageView imageView, boolean zoomable) {
    //?/*www .  j  a  va 2 s  . c o m*/
    mImageView = new WeakReference<>(imageView);

    imageView.setDrawingCacheEnabled(true);//???bitmap??
    imageView.setOnTouchListener(this);

    ViewTreeObserver observer = imageView.getViewTreeObserver();
    if (null != observer)
        observer.addOnGlobalLayoutListener(this);

    // Make sure we using MATRIX Scale Type
    setImageViewScaleTypeMatrix(imageView);

    //
    if (imageView.isInEditMode()) {
        return;
    }
    // Create Gesture Detectors...
    mScaleDragDetector = VersionedGestureDetector.newInstance(imageView.getContext(), this);

    mGestureDetector = new GestureDetector(imageView.getContext(),
            new GestureDetector.SimpleOnGestureListener() {

                // forward long click listener
                @Override
                public void onLongPress(MotionEvent e) {
                    if (null != mLongClickListener) {
                        mLongClickListener.onLongClick(getImageView());
                    }
                }

                @Override
                public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
                    if (mSingleFlingListener != null) {
                        if (getScale() > DEFAULT_MIN_SCALE) {
                            return false;
                        }

                        if (MotionEventCompat.getPointerCount(e1) > SINGLE_TOUCH
                                || MotionEventCompat.getPointerCount(e2) > SINGLE_TOUCH) {
                            return false;
                        }

                        return mSingleFlingListener.onFling(e1, e2, velocityX, velocityY);
                    }
                    return false;
                }
            });

    mGestureDetector.setOnDoubleTapListener(new DefaultOnDoubleTapListener(this));
    mBaseRotation = 0.0f;

    // Finally, update the UI so that we're zoomable
    setZoomable(zoomable);
}

---

From source file:uk.co.senab.photoview.PhotoViewAttacher.java

public PhotoViewAttacher(ImageView imageView, PdfiumCore pdfiumCore, PdfDocument pdfDocument, int pageIndex,
        float pageScale, boolean zoomable) {
    mImageView = new WeakReference<>(imageView);

    this.pdfiumCore = pdfiumCore;
    this.pdfDocument = pdfDocument;
    this.pageIndex = pageIndex;

    pdfiumCore.openPage(pdfDocument, pageIndex);
    originalBitmapSize.set((int) (pageScale * pdfiumCore.getPageWidthPoint(pdfDocument, pageIndex)),
            (int) (pageScale * pdfiumCore.getPageHeightPoint(pdfDocument, pageIndex)));

    imageView.setDrawingCacheEnabled(true);
    imageView.setOnTouchListener(this);

    ViewTreeObserver observer = imageView.getViewTreeObserver();
    if (null != observer)
        observer.addOnGlobalLayoutListener(this);

    // Make sure we using MATRIX Scale Type
    setImageViewScaleTypeMatrix(imageView);

    if (imageView.isInEditMode()) {
        return;//from ww  w  .  jav a 2s  .  co  m
    }
    // Create Gesture Detectors...
    mScaleDragDetector = VersionedGestureDetector.newInstance(imageView.getContext(), this);

    mGestureDetector = new GestureDetector(imageView.getContext(),
            new GestureDetector.SimpleOnGestureListener() {

                // forward long click listener
                @Override
                public void onLongPress(MotionEvent e) {
                    if (null != mLongClickListener) {
                        mLongClickListener.onLongClick(getImageView());
                    }
                }

                @Override
                public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
                    if (mSingleFlingListener != null) {
                        if (getScale() > DEFAULT_MIN_SCALE) {
                            return false;
                        }

                        if (MotionEventCompat.getPointerCount(e1) > SINGLE_TOUCH
                                || MotionEventCompat.getPointerCount(e2) > SINGLE_TOUCH) {
                            return false;
                        }

                        return mSingleFlingListener.onFling(e1, e2, velocityX, velocityY);
                    }
                    return false;
                }
            });

    mGestureDetector.setOnDoubleTapListener(new DefaultOnDoubleTapListener(this));
    // Finally, update the UI so that we're zoomable

    setZoomable(zoomable);
}

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