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Android widget image loading

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This commit is contained in:
Andrei 2020-04-19 12:32:11 -07:00
parent 0c439cae45
commit 35f6d47c6c
2 changed files with 65 additions and 112 deletions
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152
clients/android/NewsBlur/src/com/newsblur/util/ImageLoader.java
View file

@ -8,7 +8,6 @@ import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import android.app.Activity;
import android.appwidget.AppWidgetManager;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
@ -74,21 +73,34 @@ public class ImageLoader {
}
}
public WidgetPhotoToLoad displayWidgetImage(int widgetId, AppWidgetManager appWidgetManager, String url, RemoteViews remoteViews, int imageViewId) {
if (url == null) {
remoteViews.setImageViewResource(imageViewId, emptyRID);
return null;
/**
* Synchronous background call coming from app widget on home screen
*/
public void displayWidgetImage(String url, int imageViewId, int maxDimPX, RemoteViews remoteViews) {
url = buildUrlIfNeeded(url);
// try from memory
Bitmap bitmap = memoryCache.get(url);
if (bitmap != null) {
remoteViews.setImageViewBitmap(imageViewId, bitmap);
remoteViews.setViewVisibility(imageViewId, View.VISIBLE);
return;
}
if (url.startsWith("/")) {
url = APIConstants.buildUrl(url);
// try from disk
bitmap = getImageFromDisk(url, maxDimPX, false, 0f);
if (bitmap == null) {
// try for network
bitmap = getImageFromNetwork(url, maxDimPX,false, 0f);
}
WidgetPhotoToLoad widgetPhotoToLoad = new WidgetPhotoToLoad(widgetId, appWidgetManager, url, remoteViews, imageViewId);
// PhotoToLoad photoToLoad = new PhotoToLoad(url, imageView, roundRadius, cropSquare, maxDimPX, allowDelay);
executorService.submit(new WidgetPhotoLoader(widgetPhotoToLoad));
return widgetPhotoToLoad;
if (bitmap != null) {
memoryCache.put(url, bitmap);
remoteViews.setImageViewBitmap(imageViewId, bitmap);
remoteViews.setViewVisibility(imageViewId, View.VISIBLE);
} else {
remoteViews.setViewVisibility(imageViewId, View.GONE);
}
}
public PhotoToLoad displayImage(String url, ImageView imageView, float roundRadius, boolean cropSquare, int maxDimPX, boolean allowDelay) {
@ -97,9 +109,7 @@ public class ImageLoader {
return null;
}
if (url.startsWith("/")) {
url = APIConstants.buildUrl(url);
}
url = buildUrlIfNeeded(url);
imageViewMappings.put(imageView, url);
PhotoToLoad photoToLoad = new PhotoToLoad(url, imageView, roundRadius, cropSquare, maxDimPX, allowDelay);
@ -108,21 +118,6 @@ public class ImageLoader {
return photoToLoad;
}
public static class WidgetPhotoToLoad {
public int widgetId;
public AppWidgetManager appWidgetManager;
public String url;
public RemoteViews remoteViews;
public int imageViewId;
public WidgetPhotoToLoad(int widgetId, final AppWidgetManager appWidgetManager, final String url, final RemoteViews remoteViews, final int imageViewId){
WidgetPhotoToLoad.this.widgetId = widgetId;
WidgetPhotoToLoad.this.appWidgetManager = appWidgetManager;
WidgetPhotoToLoad.this.url = url;
WidgetPhotoToLoad.this.remoteViews = remoteViews;
WidgetPhotoToLoad.this.imageViewId = imageViewId;
}
}
public class PhotoToLoad {
public String url;
public ImageView imageView;
@ -142,71 +137,6 @@ public class ImageLoader {
}
}
private class WidgetPhotoLoader implements Runnable {
WidgetPhotoToLoad widgetPhotoToLoad;
public WidgetPhotoLoader(WidgetPhotoToLoad widgetPhotoToLoad) {
this.widgetPhotoToLoad = widgetPhotoToLoad;
}
@Override
public void run() {
Process.setThreadPriority(Process.THREAD_PRIORITY_DEFAULT + Process.THREAD_PRIORITY_LESS_FAVORABLE);
// if (photoToLoad.cancel) return;
// try from memory
Bitmap bitmap = memoryCache.get(widgetPhotoToLoad.url);
if (bitmap != null) {
widgetPhotoToLoad.remoteViews.setImageViewBitmap(widgetPhotoToLoad.imageViewId, bitmap);
// widgetPhotoToLoad.appWidgetManager.updateAppWidget(widgetPhotoToLoad.widgetId, widgetPhotoToLoad.remoteViews);
return;
}
// this not only sets a theoretical cap on how frequently we will churn against memory, storage, CPU,
// and the UI handler, it also ensures that if the loader gets very behind (as happens during fast
// scrolling, the caller has a few cycles to raise the cancellation flag, saving many resources.
// if (photoToLoad.allowDelay) {
// try {
// Thread.sleep(20);
// } catch (InterruptedException ie) {
// return;
// }
// }
// if (photoToLoad.cancel) return;
// ensure this imageview even still wants this image
// if (!isUrlMapped(photoToLoad.imageView, photoToLoad.url)) return;
// callers frequently might botch this due to lazy view measuring
// if (photoToLoad.maxDimPX < 1) {
// photoToLoad.maxDimPX = Integer.MAX_VALUE;
// }
// try from disk
File f = fileCache.getCachedFile(widgetPhotoToLoad.url);
// the only reliable way to check a cached file is to try decoding it. the util method will
// return null if it fails
// bitmap = UIUtils.decodeImage(f, photoToLoad.maxDimPX, photoToLoad.cropSquare, photoToLoad.roundRadius);
bitmap = UIUtils.decodeImage(f, 50, false, 4f);
// try for network
if (bitmap == null) {
// if (widgetPhotoToLoad.cancel) return;
fileCache.cacheFile(widgetPhotoToLoad.url);
f = fileCache.getCachedFile(widgetPhotoToLoad.url);
// bitmap = UIUtils.decodeImage(f, photoToLoad.maxDimPX, photoToLoad.cropSquare, photoToLoad.roundRadius);
bitmap = UIUtils.decodeImage(f, 50, false, 4f);
}
if (bitmap != null) {
memoryCache.put(widgetPhotoToLoad.url, bitmap);
}
widgetPhotoToLoad.remoteViews.setImageViewBitmap(widgetPhotoToLoad.imageViewId, bitmap);
// setViewImage(bitmap, photoToLoad);
}
}
private class PhotosLoader implements Runnable {
PhotoToLoad photoToLoad;
@ -249,16 +179,11 @@ public class ImageLoader {
}
// try from disk
File f = fileCache.getCachedFile(photoToLoad.url);
// the only reliable way to check a cached file is to try decoding it. the util method will
// return null if it fails
bitmap = UIUtils.decodeImage(f, photoToLoad.maxDimPX, photoToLoad.cropSquare, photoToLoad.roundRadius);
// try for network
bitmap = getImageFromDisk(photoToLoad.url, photoToLoad.maxDimPX, photoToLoad.cropSquare, photoToLoad.roundRadius);
if (bitmap == null) {
// try for network
if (photoToLoad.cancel) return;
fileCache.cacheFile(photoToLoad.url);
f = fileCache.getCachedFile(photoToLoad.url);
bitmap = UIUtils.decodeImage(f, photoToLoad.maxDimPX, photoToLoad.cropSquare, photoToLoad.roundRadius);
bitmap = getImageFromNetwork(photoToLoad.url, photoToLoad.maxDimPX, photoToLoad.cropSquare, photoToLoad.roundRadius);
}
if (bitmap != null) {
@ -326,4 +251,23 @@ public class ImageLoader {
return true;
}
}
private String buildUrlIfNeeded(String url) {
if (url.startsWith("/")) {
url = APIConstants.buildUrl(url);
}
return url;
}
private Bitmap getImageFromDisk(String url, int maxDimPX, boolean cropSquare, float roundRadius) {
// the only reliable way to check a cached file is to try decoding it. the util method will
// return null if it fails
File f = fileCache.getCachedFile(url);
return UIUtils.decodeImage(f, maxDimPX, cropSquare, roundRadius);
}
private Bitmap getImageFromNetwork(String url, int maxDimPX, boolean cropSquare, float roundRadius) {
fileCache.cacheFile(url);
File f = fileCache.getCachedFile(url);
return UIUtils.decodeImage(f, maxDimPX, cropSquare, roundRadius);
}
}

25
clients/android/NewsBlur/src/com/newsblur/widget/WidgetRemoteViewsFactory.java
View file

@ -9,7 +9,8 @@ import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.content.Loader;
import android.util.Log;
import android.text.TextUtils;
import android.view.View;
import android.widget.RemoteViews;
import android.widget.RemoteViewsService;
@ -17,6 +18,7 @@ import com.newsblur.R;
import com.newsblur.domain.Story;
import com.newsblur.util.FeedSet;
import com.newsblur.util.FeedUtils;
import com.newsblur.util.Log;
import com.newsblur.util.PrefsUtils;
import com.newsblur.util.StoryUtils;
import com.newsblur.util.ThumbnailStyle;
@ -36,8 +38,8 @@ public class WidgetRemoteViewsFactory implements RemoteViewsService.RemoteViewsF
private int appWidgetId;
private boolean skipCursorUpdate;
public WidgetRemoteViewsFactory(Context context, Intent intent) {
Log.d(TAG, "Constructor");
WidgetRemoteViewsFactory(Context context, Intent intent) {
com.newsblur.util.Log.d(TAG, "Constructor");
this.context = context;
appWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
AppWidgetManager.INVALID_APPWIDGET_ID);
@ -101,7 +103,7 @@ public class WidgetRemoteViewsFactory implements RemoteViewsService.RemoteViewsF
*/
@Override
public RemoteViews getViewAt(int position) {
Log.d(TAG, "getViewAt " + position);
com.newsblur.util.Log.d(TAG, "getViewAt " + position);
Story story = storyItems.get(position);
WidgetRemoteViews rv = new WidgetRemoteViews(context.getPackageName(), R.layout.view_widget_story_item);
@ -110,9 +112,12 @@ public class WidgetRemoteViewsFactory implements RemoteViewsService.RemoteViewsF
rv.setTextViewText(R.id.story_item_author, story.authors);
rv.setTextViewText(R.id.story_item_feedtitle, story.extern_feedTitle);
FeedUtils.iconLoader.displayWidgetImage(appWidgetId, AppWidgetManager.getInstance(context), story.extern_faviconUrl, rv, R.id.story_item_feedicon);
if (PrefsUtils.getThumbnailStyle(context) != ThumbnailStyle.OFF && story.thumbnailUrl != null) {
// FeedUtils.thumbnailLoader.displayWidgetImage(appWidgetId, AppWidgetManager.getInstance(context), story.thumbnailUrl, rv, R.id.story_item_thumbnail);
// image dimensions same as R.layout.view_widget_story_item
FeedUtils.iconLoader.displayWidgetImage(story.extern_faviconUrl, R.id.story_item_feedicon, UIUtils.dp2px(context, 18), rv);
if (PrefsUtils.getThumbnailStyle(context) != ThumbnailStyle.OFF && !TextUtils.isEmpty(story.thumbnailUrl)) {
FeedUtils.thumbnailLoader.displayWidgetImage(story.thumbnailUrl, R.id.story_item_thumbnail, UIUtils.dp2px(context, 64), rv);
} else {
rv.setViewVisibility(R.id.story_item_thumbnail, View.GONE);
}
//TODO: authors and dates don't get along
@ -200,7 +205,11 @@ public class WidgetRemoteViewsFactory implements RemoteViewsService.RemoteViewsF
*/
@Override
public void onDestroy() {
Log.d(TAG, "onDestroy");
com.newsblur.util.Log.d(TAG, "onDestroy");
if (cursor != null) {
cursor.close();
}
PrefsUtils.removeWidgetFeed(context, appWidgetId);
}
/**