ImageViewTouchBase newView =
                                mSlideShowImageViews[mSlideShowImageCurrent];
                        newView.setVisibility(View.VISIBLE);
                        newView.setImageRotateBitmapResetBase(bitmap, true);
                        newView.bringToFront();

package com.android.camera;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.graphics.RectF;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.widget.ImageView;

abstract class ImageViewTouchBase extends ImageView {

framework 处理图片

    public void setImageResource(int resId) {
        if (mUri != null || mResource != resId) {
            updateDrawable(null);
            mResource = resId;
            mUri = null;

            final int oldWidth = mDrawableWidth;
            final int oldHeight = mDrawableHeight;

            resolveUri();

            if (oldWidth != mDrawableWidth || oldHeight != mDrawableHeight) {
                requestLayout();
            }
            invalidate();
        }
    }

    public void setImageURI(Uri uri) {
        if (mResource != 0 ||
                (mUri != uri &&
                 (uri == null || mUri == null || !uri.equals(mUri)))) {
            updateDrawable(null);
            mResource = 0;
            mUri = uri;

            final int oldWidth = mDrawableWidth;
            final int oldHeight = mDrawableHeight;

            resolveUri();

            if (oldWidth != mDrawableWidth || oldHeight != mDrawableHeight) {
                requestLayout();
            }
            invalidate();
        }
    }

        } else if (mUri != null) {
            String scheme = mUri.getScheme();
            if (ContentResolver.SCHEME_ANDROID_RESOURCE.equals(scheme)) {
                try {
                    // Load drawable through Resources, to get the source density information
                    ContentResolver.OpenResourceIdResult r =
                            mContext.getContentResolver().getResourceId(mUri);
                    d = r.r.getDrawable(r.id);
                } catch (Exception e) {
                    Log.w("ImageView", "Unable to open content: " + mUri, e);
                }
            } else if (ContentResolver.SCHEME_CONTENT.equals(scheme)
                    || ContentResolver.SCHEME_FILE.equals(scheme)) {
                InputStream stream = null;
                try {
                    stream = mContext.getContentResolver().openInputStream(mUri);
                    d = Drawable.createFromStream(stream, null);
                } catch (Exception e) {
                    Log.w("ImageView", "Unable to open content: " + mUri, e);
                } finally {
                    if (stream != null) {
                        try {
                            stream.close();
                        } catch (IOException e) {
                            Log.w("ImageView", "Unable to close content: " + mUri, e);
                        }
                    }
                }
        } else {
                d = Drawable.createFromPath(mUri.toString());
            }

    public static Drawable createFromStream(InputStream is, String srcName) {
        Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, srcName != null ? srcName : "Unknown drawable");
        try {
            return createFromResourceStream(null, null, is, srcName, null);
        } finally {
            Trace.traceEnd(Trace.TRACE_TAG_RESOURCES);
        }
    }