package cn.trinea.android.demo;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.Display;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
import android.widget.RelativeLayout;
import android.widget.RelativeLayout.LayoutParams;
import cn.trinea.android.common.entity.FailedReason;
import cn.trinea.android.common.service.impl.ImageCache;
import cn.trinea.android.common.service.impl.ImageMemoryCache.OnImageCallbackListener;
import cn.trinea.android.common.service.impl.RemoveTypeLastUsedTimeFirst;
/**
* ImageCacheDemo
*
* @author <a href="http://www.trinea.cn/android/android-imagecache/" target="_blank">Trinea</a> 2013-6-25
*/
public class ImageCacheDemo extends BaseActivity {
/** column number **/
public static final int COLUMNS = 2;
/** imageView default height **/
public static final int IMAGEVIEW_DEFAULT_HEIGHT = 400;
public static final String TAG_CACHE = "image_cache";
/** cache folder path which be used when saving images **/
public static final String DEFAULT_CACHE_FOLDER = new StringBuilder()
.append(Environment.getExternalStorageDirectory()
.getAbsolutePath()).append(File.separator)
.append("Trinea").append(File.separator)
.append("AndroidDemo").append(File.separator)
.append("ImageCache").toString();
private RelativeLayout parentLayout;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState, R.layout.image_cache_demo);
parentLayout = (RelativeLayout)findViewById(R.id.image_cache_parent_layout);
initImageUrlList();
IMAGE_CACHE.initData(this, TAG_CACHE);
IMAGE_CACHE.setContext(context);
IMAGE_CACHE.setCacheFolder(DEFAULT_CACHE_FOLDER);
// intelligent compress image
// IMAGE_CACHE.setCompressListener(new CompressListener() {
//
// @Override
// public int getCompressSize(String imagePath) {
// if (FileUtils.isFileExist(imagePath)) {
// long fileSize = FileUtils.getFileSize(imagePath) / 1000;
// /**
// * if image bigger than 100k, compress to 1/(n + 1) width and 1/(n + 1) height, n is fileSize / 100k
// **/
// if (fileSize > 100) {
// return (int)(fileSize / 100) + 1;
// }
// }
// return 1;
// }
// });
int count = 0, viewId = 0x7F24FFF0;
int verticalSpacing, horizontalSpacing;
verticalSpacing = horizontalSpacing = getResources().getDimensionPixelSize(R.dimen.dp_4);
Display display = getWindowManager().getDefaultDisplay();
int imageWidth = (display.getWidth() - (COLUMNS + 1) * horizontalSpacing) / COLUMNS;
for (String imageUrl : imageUrlList) {
ImageView imageView = new ImageView(context);
imageView.setId(++viewId);
imageView.setScaleType(ScaleType.CENTER);
imageView.setBackgroundResource(R.drawable.image_border);
parentLayout.addView(imageView);
// set imageView layout params
LayoutParams layoutParams = (RelativeLayout.LayoutParams)imageView.getLayoutParams();
layoutParams.width = imageWidth;
layoutParams.topMargin = verticalSpacing;
layoutParams.rightMargin = horizontalSpacing;
int column = count % COLUMNS;
int row = count / COLUMNS;
if (row > 0) {
layoutParams.addRule(RelativeLayout.BELOW, viewId - COLUMNS);
}
if (column > 0) {
layoutParams.addRule(RelativeLayout.RIGHT_OF, viewId - 1);
}
layoutParams.height = IMAGEVIEW_DEFAULT_HEIGHT;
// get image
IMAGE_CACHE.get(imageUrl, imageView);
count++;
}
}
@Override
protected void onDestroy() {
IMAGE_CACHE.saveDataToDb(this, TAG_CACHE);
super.onDestroy();
}
/**
* if you just want load image for ImageView, just like this, no need to setOnImageCallbackListener and so on like
* <code>static</code> below
*/
// public static final ImageCache IMAGE_CACHE = CacheManager.getImageCache();
/** icon cache **/
public static final ImageCache IMAGE_CACHE = new ImageCache(128, 512);
static {
/** init icon cache **/
OnImageCallbackListener imageCallBack = new OnImageCallbackListener() {
/**
* callback function after get image successfully, run on ui thread
*
* @param imageUrl imageUrl
* @param loadedImage bitmap
* @param view view need the image
* @param isInCache whether already in cache or got realtime
*/
@Override
public void onGetSuccess(String imageUrl, Bitmap loadedImage, View view, boolean isInCache) {
if (view != null && loadedImage != null) {
ImageView imageView = (ImageView)view;
imageView.setImageBitmap(loadedImage);
// first time show with animation
if (!isInCache) {
imageView.startAnimation(getInAlphaAnimation(2000));
}
// auto set height accroding to rate between height and weight
LayoutParams imageParams = (LayoutParams)imageView.getLayoutParams();
imageParams.height = imageParams.width * loadedImage.getHeight() / loadedImage.getWidth();
imageView.setScaleType(ScaleType.FIT_XY);
}
}
/**
* callback function before get image, run on ui thread
*
* @param imageUrl imageUrl
* @param view view need the image
*/
@Override
public void onPreGet(String imageUrl, View view) {
// Log.e(TAG_CACHE, "pre get image");
}
/**
* callback function after get image failed, run on ui thread
*
* @param imageUrl imageUrl
* @param loadedImage bitmap
* @param view view need the image
* @param failedReason failed reason for get image
*/
@Override
public void onGetFailed(String imageUrl, Bitmap loadedImage, View view, FailedReason failedReason) {
Log.e(TAG_CACHE,
new StringBuilder(128).append("get image ").append(imageUrl).append(" error, failed type is: ")
.append(failedReason.getFailedType()).append(", failed reason is: ")
.append(failedReason.getCause().getMessage()).toString());
}
@Override
public void onGetNotInCache(String imageUrl, View view) {
if (view != null && view instanceof ImageView) {
((ImageView)view).setImageResource(R.drawable.trinea);
}
}
};
IMAGE_CACHE.setOnImageCallbackListener(imageCallBack);
IMAGE_CACHE.setCacheFullRemoveType(new RemoveTypeLastUsedTimeFirst<Bitmap>());
IMAGE_CACHE.setHttpReadTimeOut(10000);
IMAGE_CACHE.setOpenWaitingQueue(true);
IMAGE_CACHE.setValidTime(-1);
/**
* close connection, default is connect keep-alive to reuse connection. if image is from different server, you
* can set this
*/
// IMAGE_CACHE.setRequestProperty("Connection", "false");
}
public static AlphaAnimation getInAlphaAnimation(long durationMillis) {
AlphaAnimation inAlphaAnimation = new AlphaAnimation(0, 1);
inAlphaAnimation.setDuration(durationMillis);
return inAlphaAnimation;
}
private List<String> imageUrlList;
private void initImageUrlList() {
imageUrlList = new ArrayList<String>();
imageUrlList.add("http://farm8.staticflickr.com/7409/9148527822_36fa37d7ca_z.jpg");
imageUrlList.add("http://farm4.staticflickr.com/3755/9148527824_6c156185ea.jpg");
imageUrlList.add("http://farm8.staticflickr.com/7318/9148527808_e804baef0b.jpg");
imageUrlList.add("http://farm8.staticflickr.com/7318/9146300275_5fe995d123.jpg");
imageUrlList.add("http://farm8.staticflickr.com/7288/9146300469_bd3420c75b_z.jpg");
imageUrlList.add("http://farm8.staticflickr.com/7351/9148527976_8a4e75ae87.jpg");
imageUrlList.add("http://farm3.staticflickr.com/2888/9148527996_f05118d7de_o.jpg");
imageUrlList.add("http://farm3.staticflickr.com/2863/9148527892_31f9377351_o.jpg");
imageUrlList.add("http://farm8.staticflickr.com/7310/9148528008_8e8f51997a.jpg");
imageUrlList.add("http://farm3.staticflickr.com/2849/9148528108_dfcda19507.jpg");
imageUrlList.add("http://farm4.staticflickr.com/3739/9148528022_e9bf03058f.jpg");
}
}