Java tutorial
/* * The MIT License (MIT) * * Copyright (c) 2014-2015 Umeng, Inc * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package com.umeng.comm.ui.widgets; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.app.Dialog; import android.app.ProgressDialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.net.Uri; import android.os.Environment; import android.support.v4.view.ViewPager; import android.support.v4.view.ViewPager.OnPageChangeListener; import android.view.View; import android.widget.TextView; import com.umeng.comm.core.beans.ImageItem; import com.umeng.comm.core.imageloader.cache.ImageCache; import com.umeng.comm.core.imageloader.utils.Md5Helper; import com.umeng.comm.core.utils.CommonUtils; import com.umeng.comm.core.utils.DeviceUtils; import com.umeng.comm.core.utils.Log; import com.umeng.comm.core.utils.ResFinder; import com.umeng.comm.core.utils.ToastMsg; import com.umeng.comm.ui.adapters.ImagePagerAdapter; /** * ? * * @author mrsimple */ public class ImageBrowser extends Dialog /* implements OnGestureListener */ { // private int mCusIndex = 0; ProgressDialog mLoadingDialog; private ViewPager mViewPager; private ImagePagerAdapter mAdapter; private List<ImageItem> mImageList; private TextView mImagePosTextView; private static final String DIVIDER = "/"; private boolean mPreView = false; private Activity mActivity; /** * @param context */ public ImageBrowser(Context context) { this(context, false); } public ImageBrowser(Context context, boolean isPreView) { super(context, android.R.style.Theme_Black_NoTitleBar); mPreView = isPreView; initContentView(); int dialogStyle = ResFinder.getStyle("umeng_comm_dialog_wrap_content"); mLoadingDialog = new ProgressDialog(context, dialogStyle); getWindow().setWindowAnimations(ResFinder.getStyle("umeng_comm_image_browser")); mActivity = (Activity) context; } /** * ? */ private void initContentView() { setContentView(ResFinder.getLayout("umeng_comm_img_browser_layout")); View saveView = findViewById(ResFinder.getId("umeng_comm_save_img_tv")); if (mPreView) {// ?? saveView.setVisibility(View.GONE); } else { saveView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { saveImage(); } }); } mImagePosTextView = (TextView) findViewById(ResFinder.getId("umeng_comm_current_pos")); mViewPager = (ViewPager) findViewById(ResFinder.getId("viewPager")); mAdapter = new ImagePagerAdapter(null); mAdapter.setOnDismissListener(new android.content.DialogInterface.OnDismissListener() { @Override public void onDismiss(DialogInterface dialog) { dismiss(); } }); mAdapter.isPreView = mPreView; mViewPager.setAdapter(mAdapter); mViewPager.setOnPageChangeListener(new OnPageChangeListener() { @Override public void onPageSelected(int page) { mImagePosTextView.setText((page + 1) + DIVIDER + mImageList.size()); } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { } @Override public void onPageScrollStateChanged(int arg0) { } }); } // private void saveImage() { // FileOutputStream fos = null; // try { // // TODO ?? ? // String imageMd5 = // Md5Helper.toMD5(mImageList.get(mCusIndex).originImageUrl); // File imgFile = new File(getCacheDir() + File.separator // + imageMd5 + ".png"); // imgFile.createNewFile(); // fos = new FileOutputStream(imgFile); // ViewGroup viewGroup = (ViewGroup) // mViewPager.getChildAt(mViewPager.getCurrentItem()); // ImageView imageView = (ImageView) viewGroup.getChildAt(0); // Bitmap bitmap = ((BitmapDrawable) (imageView.getDrawable())).getBitmap(); // bitmap.compress(CompressFormat.PNG, 100, fos); // fos.flush(); // ToastMsg.showShortMsg(getContext(), // ResFinder.getString("umeng_comm_save_pic_success") // + imgFile.getAbsolutePath()); // } catch (FileNotFoundException e) { // ToastMsg.showShortMsg(getContext(), // ResFinder.getString("umeng_comm_save_pic_failed")); // e.printStackTrace(); // } catch (IOException e) { // e.printStackTrace(); // ToastMsg.showShortMsg(getContext(), // ResFinder.getString("umeng_comm_save_pic_failed")); // } finally { // DiskLruCache.closeQuietly(fos); // } // } // private void saveImage() { // BufferedWriter writer = null; // BufferedReader reader = null; // try { // String url = mImageList.get(mViewPager.getCurrentItem()).middleImageUrl; // String fileName = Md5Helper.toMD5(url); // File imgFile = new File(getCacheDir() + File.separator // + fileName + ".png"); // // imgFile.createNewFile(); // writer = new BufferedWriter(new OutputStreamWriter(new // FileOutputStream(imgFile))); // // InputStream inputStream = // ImageCache.getInstance().getInputStream(fileName); // reader = new BufferedReader(new InputStreamReader(inputStream)); // int len = 0; // char[] buffer = new char[4096]; // while (( len = reader.read(buffer) ) != -1 ) { // writer.write(buffer, 0, len); // } // writer.flush(); // galleryAddPic(imgFile); // ToastMsg.showShortMsg(getContext(), // ResFinder.getString("umeng_comm_save_pic_success") // + imgFile.getAbsolutePath()); // } catch (FileNotFoundException e) { // ToastMsg.showShortMsg(getContext(), // ResFinder.getString("umeng_comm_save_pic_failed")); // e.printStackTrace(); // } catch (IOException e) { // e.printStackTrace(); // ToastMsg.showShortMsg(getContext(), // ResFinder.getString("umeng_comm_save_pic_failed")); // } finally { // DiskLruCache.closeQuietly(writer); // DiskLruCache.closeQuietly(reader); // } // } private void saveImage() { BufferedOutputStream out = null; BufferedInputStream in = null; try { String url = mImageList.get(mViewPager.getCurrentItem()).middleImageUrl; String fileName = Md5Helper.toMD5(url); File imgFile = new File(getCacheDir() + File.separator + fileName + ".png"); in = new BufferedInputStream(ImageCache.getInstance().getInputStream(fileName), 8 * 1024); out = new BufferedOutputStream(new FileOutputStream(imgFile), 8 * 1024); byte[] buffer = new byte[4 * 1024]; int len = 0; while ((len = in.read(buffer)) != -1) { out.write(buffer, 0, len); } out.flush(); galleryAddPic(imgFile); ToastMsg.showShortMsg(getContext(), ResFinder.getString("umeng_comm_save_pic_success") + imgFile.getAbsolutePath()); } catch (FileNotFoundException e) { ToastMsg.showShortMsg(getContext(), ResFinder.getString("umeng_comm_save_pic_failed")); e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); ToastMsg.showShortMsg(getContext(), ResFinder.getString("umeng_comm_save_pic_failed")); } finally { CommonUtils.closeSilently(out); CommonUtils.closeSilently(in); } } private void galleryAddPic(File savedFile) { Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE); Uri contentUri = Uri.fromFile(savedFile); mediaScanIntent.setData(contentUri); mActivity.sendBroadcast(mediaScanIntent); } private String getCacheDir() throws IOException { Context context = getContext(); String cachePath; if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) { Log.d("", "### context : " + context + ", dir = " + context.getExternalCacheDir()); cachePath = Environment.getExternalStorageDirectory().getAbsolutePath(); } else { cachePath = context.getCacheDir().getPath(); } File cacheFile = new File(cachePath + File.separator + DeviceUtils.getAppName(context)); if (!cacheFile.exists()) { cacheFile.mkdir(); } return cacheFile.getAbsolutePath(); } /** * @param url url? */ public void setImageList(List<ImageItem> images, int curPos) { mImageList = images; mAdapter.addImagePaths(images); mViewPager.setCurrentItem(curPos); mImagePosTextView.setText((curPos + 1) + DIVIDER + mImageList.size()); } /** * @param url url? */ public void setImageStringList(List<String> images, int curPos) { List<ImageItem> imageItems = new ArrayList<ImageItem>(); for (int i = 0; i < images.size(); i++) { String url = images.get(i); imageItems.add(new ImageItem(url, url, url)); } setImageList(imageItems, curPos); } @Override public void dismiss() { super.dismiss(); mAdapter.cleanCache(); } public static interface OnDismissListener { void onDismiss(); } }