Java tutorial
/******************************************************************************* * Copyright 2011-2013 Sergey Tarasevich * <p/> * 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 * <p/> * http://www.apache.org/licenses/LICENSE-2.0 * <p/> * 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 com.miqtech.master.client.ui; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.net.URL; import java.net.URLConnection; import java.util.HashMap; import java.util.List; import java.util.Map; import android.content.Context; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.Bitmap.CompressFormat; import android.graphics.BitmapFactory; import android.net.Uri; import android.os.Bundle; import android.os.Environment; import android.os.Handler; import android.os.Message; import android.os.Parcelable; import android.provider.MediaStore; import android.support.v4.view.PagerAdapter; import android.support.v4.view.ViewPager; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.ProgressBar; import android.widget.TextView; import android.widget.Toast; import com.miqtech.master.client.R; import com.miqtech.master.client.application.WangYuApplication; import com.miqtech.master.client.entity.User; import com.miqtech.master.client.entity.UserImage; import com.miqtech.master.client.http.HttpConstant; import com.miqtech.master.client.ui.baseactivity.BaseActivity; import com.nostra13.universalimageloader.cache.disc.naming.Md5FileNameGenerator; import com.nostra13.universalimageloader.core.DisplayImageOptions; import com.nostra13.universalimageloader.core.ImageLoader; import com.nostra13.universalimageloader.core.ImageLoaderConfiguration; import com.nostra13.universalimageloader.core.assist.FailReason; import com.nostra13.universalimageloader.core.assist.ImageScaleType; import com.nostra13.universalimageloader.core.assist.QueueProcessingType; import com.nostra13.universalimageloader.core.display.FadeInBitmapDisplayer; import com.nostra13.universalimageloader.core.listener.SimpleImageLoadingListener; import com.photoview.PhotoView; import com.viewpagerindicator.CirclePageIndicator; import com.viewpagerindicator.HackyViewPager; import com.viewpagerindicator.PageIndicator; import org.json.JSONObject; /** * @author Sergey Tarasevich (nostra13[at]gmail[dot]com) */ public class PersonalHomePhotoActivity extends BaseActivity { protected ImageLoader imageLoader = ImageLoader.getInstance(); DisplayImageOptions options; private static final String STATE_POSITION = "STATE_POSITION"; private static final String IMAGES = "images"; private static final String IMAGE_POSITION = "image_index"; HackyViewPager pager; PageIndicator mIndicator; private boolean isMyShelf; private List<UserImage> images; private Context context; private TextView photo_number; private boolean isFromComment = false; //?? public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_image_pager); initImageLoader(this); context = this; Bundle bundle = getIntent().getExtras(); images = (List<UserImage>) bundle.getSerializable(IMAGES); isMyShelf = bundle.getBoolean("isMyShelf", false); int pagerPosition = bundle.getInt(IMAGE_POSITION, 0); isFromComment = bundle.getBoolean("isFromComment", false); if (savedInstanceState != null) { pagerPosition = savedInstanceState.getInt(STATE_POSITION); } options = new DisplayImageOptions.Builder().showImageForEmptyUri(R.drawable.default_img) .showImageOnFail(R.drawable.default_img).resetViewBeforeLoading(true).cacheOnDisc(true) .imageScaleType(ImageScaleType.EXACTLY).bitmapConfig(Bitmap.Config.ARGB_8888) .displayer(new FadeInBitmapDisplayer(300)).build(); pager = (HackyViewPager) findViewById(R.id.pager); pager.setAdapter(new ImagePagerAdapter(images, this)); pager.setCurrentItem(pagerPosition); pager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() { @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { } @Override public void onPageSelected(int position) { photo_number.setText((position + 1) + "/" + images.size()); } @Override public void onPageScrollStateChanged(int state) { } }); mIndicator = (CirclePageIndicator) findViewById(R.id.indicator); photo_number = (TextView) findViewById(R.id.photo_number); if (isFromComment) { photo_number.setVisibility(View.GONE); } else { photo_number.setText((pagerPosition + 1) + "/" + images.size()); } mIndicator.setViewPager(pager); } public void initImageLoader(Context context) { // This configuration tuning is custom. You can tune every option, you // may tune some of them, // or you can create default configuration by // ImageLoaderConfiguration.createDefault(this); // method. ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(context) .threadPriority(Thread.NORM_PRIORITY - 2).denyCacheImageMultipleSizesInMemory() .discCacheFileNameGenerator(new Md5FileNameGenerator()) .tasksProcessingOrder(QueueProcessingType.LIFO).writeDebugLogs() // Remove for release app .build(); // Initialize ImageLoader with configuration. ImageLoader.getInstance().init(config); } @Override public void onSaveInstanceState(Bundle outState) { outState.putInt(STATE_POSITION, pager.getCurrentItem()); } private class ImagePagerAdapter extends PagerAdapter { private List<UserImage> images; private LayoutInflater inflater; private Context mContext; ImagePagerAdapter(List<UserImage> images, Context context) { this.images = images; this.mContext = context; inflater = getLayoutInflater(); } @Override public void destroyItem(ViewGroup container, int position, Object object) { ((ViewPager) container).removeView((View) object); } @Override public void finishUpdate(View container) { } @Override public int getCount() { return images.size(); } @Override public Object instantiateItem(ViewGroup view, int position) { View imageLayout = inflater.inflate(R.layout.item_pager_image, view, false); PhotoView imageView = (PhotoView) imageLayout.findViewById(R.id.image); final ProgressBar spinner = (ProgressBar) imageLayout.findViewById(R.id.loading); TextView tvDeletePhoto = (TextView) imageLayout.findViewById(R.id.tvDeletePhoto); TextView tvSavePhoto = (TextView) imageLayout.findViewById(R.id.tvSavePhoto); if (isFromComment) { tvDeletePhoto.setVisibility(View.GONE); tvSavePhoto.setVisibility(View.GONE); } else { if (isMyShelf) { tvDeletePhoto.setVisibility(View.VISIBLE); } else { tvSavePhoto.setVisibility(View.VISIBLE); } } PhotoListener listener = new PhotoListener(position); tvDeletePhoto.setOnClickListener(listener); tvSavePhoto.setOnClickListener(listener); imageLoader.displayImage(HttpConstant.SERVICE_UPLOAD_AREA + images.get(position).getImg(), imageView, options, new SimpleImageLoadingListener() { @Override public void onLoadingStarted(String imageUri, View view) { spinner.setVisibility(View.VISIBLE); } @Override public void onLoadingFailed(String imageUri, View view, FailReason failReason) { String message = null; switch (failReason.getType()) { case IO_ERROR: message = "?"; break; case DECODING_ERROR: message = "Image can't be decoded"; break; case NETWORK_DENIED: message = "Downloads are denied"; break; case OUT_OF_MEMORY: message = "Out Of Memory error"; break; case UNKNOWN: message = "Unknown error"; break; } Toast.makeText(PersonalHomePhotoActivity.this, message, Toast.LENGTH_SHORT).show(); spinner.setVisibility(View.GONE); } @Override public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) { spinner.setVisibility(View.GONE); } }); ((ViewPager) view).addView(imageLayout, 0); return imageLayout; } @Override public boolean isViewFromObject(View view, Object object) { return view.equals(object); } @Override public void restoreState(Parcelable state, ClassLoader loader) { } @Override public Parcelable saveState() { return null; } @Override public void startUpdate(View container) { } } private class PhotoListener implements OnClickListener { int position; PhotoListener(int position) { this.position = position; } @Override public void onClick(View v) { switch (v.getId()) { case R.id.tvDeletePhoto: deletePhoto(position); break; case R.id.tvSavePhoto: UserImage image = images.get(position); ImageHandler imageHandler = new ImageHandler(); new ImageThread(image.getImg(), imageHandler).start(); break; default: break; } } } public class ImageThread extends Thread { String url; ImageHandler handler; ImageThread(String url, ImageHandler handler) { this.url = url; this.handler = handler; } @Override public void run() { // TODO Auto-generated method stub super.run(); Bitmap bitmap = getBitMBitmap(HttpConstant.SERVICE_UPLOAD_AREA + url); Message msg = handler.obtainMessage(); msg.obj = bitmap; handler.sendMessage(msg); } } private class ImageHandler extends Handler { @Override public void handleMessage(Message msg) { // TODO Auto-generated method stub super.handleMessage(msg); Bitmap bitmap = (Bitmap) msg.obj; saveImageToGallery(context, bitmap); finish(); showToast("??"); } } // public static Bitmap GetLocalOrNetBitmap(String url) // { // Bitmap bitmap = null; // InputStream in = null; // BufferedOutputStream out = null; // try // { // in = new BufferedInputStream(new URL(url).openStream(), 2*1024); // final ByteArrayOutputStream dataStream = new ByteArrayOutputStream(); // out = new BufferedOutputStream(dataStream, 2*1024); // // copy(in, out); // out.flush(); // byte[] data = dataStream.toByteArray(); // bitmap = BitmapFactory.decodeByteArray(data, 0, data.length); // data = null; // return bitmap; // } // catch (IOException e) // { // e.printStackTrace(); // return null; // } // } public static Bitmap getBitMBitmap(String urlpath) { Bitmap map = null; try { URL url = new URL(urlpath); URLConnection conn = url.openConnection(); conn.connect(); InputStream in; in = conn.getInputStream(); map = BitmapFactory.decodeStream(in); // TODO Auto-generated catch block } catch (IOException e) { e.printStackTrace(); } return map; } private void deletePhoto(int position) { showLoading(); Map<String, String> params = new HashMap<>(); User user = WangYuApplication.getUser(this); params.put("userId", user.getId()); params.put("token", user.getToken()); params.put("id", images.get(position).getId() + ""); sendHttpPost(HttpConstant.SERVICE_HTTP_AREA + HttpConstant.DELETE_PHOTO, params, HttpConstant.DELETE_PHOTO); } public static void saveImageToGallery(Context context, Bitmap bmp) { // ? File appDir = new File(Environment.getExternalStorageDirectory(), "Boohee"); if (!appDir.exists()) { appDir.mkdir(); } String fileName = System.currentTimeMillis() + ".jpg"; File file = new File(appDir, fileName); try { FileOutputStream fos = new FileOutputStream(file); bmp.compress(CompressFormat.JPEG, 100, fos); fos.flush(); fos.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } // ? try { MediaStore.Images.Media.insertImage(context.getContentResolver(), file.getAbsolutePath(), fileName, null); } catch (FileNotFoundException e) { e.printStackTrace(); } // ? context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://" + fileName))); } @Override public void onSuccess(JSONObject object, String method) { super.onSuccess(object, method); hideLoading(); if (HttpConstant.DELETE_PHOTO.equals(method)) { showToast("?"); setResult(RESULT_OK); finish(); } } @Override public void onError(String method, String errorInfo) { hideLoading(); super.onError(method, errorInfo); } }