我正在尝试在 Fresco 中加载图像，但图像似乎无法加载。当我添加占位符 View 时，占位符显示。
public static void loadImg(final Context c, final SimpleDraweeView view, final String img){
Uri uri = Uri.parse("https://placekitten.com/g/201/300");
view.setImageURI(uri);
}
注意，我正在应用程序中初始化 Fresco，并且我在 Manifest 中有互联网使用情况。
SimpleDraweeView
<com.facebook.drawee.view.SimpleDraweeView
android:id="@+id/small_box_image"
android:layout_width="match_parent"
android:layout_height="150dp"
fresco:placeholderImage="@drawable/google"
fresco:fadeDuration="300"
fresco:viewAspectRatio="1.33"
/>
调用loadImg的方法
public static View generateTileView(Context c, Tile t){
LayoutInflater inflater = (LayoutInflater) c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view;
boolean desc = false;
switch(t.getObjectTypeName()){
case Tile.OBJECT_NAME:
view = inflater.inflate(R.layout.view_tile_small_object, null);
break;
case Tile.LOOK_CLOSER_NAME:
view = inflater.inflate(R.layout.view_tile_small_look_closer, null);
desc = true;
break;
case Tile.STORY_NAME:
view = inflater.inflate(R.layout.view_tile_small_story, null);
desc = true;
break;
case Tile.TOUR_NAME:
view = inflater.inflate(R.layout.view_tile_small_tour, null);
desc = true;
break;
default:
view = inflater.inflate(R.layout.view_tile_small_object, null);
break;
}
TextView type = (TextView) view.findViewById(R.id.small_box_type);
TextView title = (TextView) view.findViewById(R.id.small_box_title);
SimpleDraweeView img = (SimpleDraweeView) view.findViewById(R.id.small_box_image);
if(desc) {
TextView descText = (TextView) view.findViewById(R.id.small_box_desc);
if ( t.getDescription() != null) {
descText.setText(t.getDescription());
descText.setTypeface(TypefaceUtil.get(c, TypefaceUtil.ENZO_M));
}else{
descText.setVisibility(View.GONE);
}
}
title.setText(t.getTitle());
title.setTypeface(TypefaceUtil.get(c, TypefaceUtil.SOFIA_BOLD));
type.setText(t.getObjectTypeName());
type.setTypeface(TypefaceUtil.get(c, TypefaceUtil.SOFIA_BOLD));
ViewUtils.loadImg(c, img, t.getImg());
return view;
}
public static void injectTileViews(Context c, final OnFragmentChangeListener listener,
List<Tile> tiles, LinearLayout leftSide, LinearLayout rightSide){
int index = 0;
for(final Tile t : tiles){
//Gets the views and the ImageView for the star
View v = ViewUtils.generateTileView(c,t);
if(!t.getObjectTypeName().equals(Tile.LOOK_CLOSER_NAME)) {
final ImageView star = (ImageView) v.findViewById(R.id.tile_star);
//Sets the favorite on click listener
star.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String type = "";
switch(t.getObjectTypeName()){
case Tile.OBJECT_NAME:
type = OnFragmentChangeListener.OBJECT;
break;
case Tile.STORY_NAME:
type = OnFragmentChangeListener.STORY;
break;
case Tile.TOUR_NAME:
type = OnFragmentChangeListener.TOUR;
break;
}
t.setFavorite(!t.getFavorite());
listener.onFavorite(type, t.getObjectID(), t.getFavorite());
star.setImageResource((t.getFavorite()) ? R.drawable.ic_grade : R.drawable.favorite_star);
}
});
//sets the stat image based on whether it's favorite or no
star.setImageResource((t.getFavorite()) ? R.drawable.ic_grade : R.drawable.favorite_star);
}
//sets the entire tile click listener
v.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
switch (t.getObjectTypeName()) {
case Tile.OBJECT_NAME:
listener.onFragmentChange(MainActivity.OBJECT, t.getObjectID());
break;
case Tile.TOUR_NAME:
listener.onFragmentChange(MainActivity.TOUR, t.getTourID());
break;
case Tile.STORY_NAME:
listener.onFragmentChange(MainActivity.STORY, t.getStoryID());
break;
case Tile.LOOK_CLOSER_NAME:
listener.onFragmentChange(MainActivity.LOOK_CLOSER, t.getObjectID());
break;
}
}
});
//invalidates the measurement
leftSide.invalidate();
rightSide.invalidate();
//sets the measure spec
final int widthMeasureSpec =
View.MeasureSpec.makeMeasureSpec(ViewGroup.LayoutParams.MATCH_PARENT,View.MeasureSpec.UNSPECIFIED);
final int heightMeasureSpec =
View.MeasureSpec.makeMeasureSpec(ViewGroup.LayoutParams.WRAP_CONTENT, View.MeasureSpec.UNSPECIFIED);
//re-measures
leftSide.measure(widthMeasureSpec, heightMeasureSpec);
rightSide.measure(widthMeasureSpec, heightMeasureSpec);
int l = leftSide.getMeasuredHeight();
int r = rightSide.getMeasuredHeight();
//determines which side to add the view to
if(l <= r){
leftSide.addView(v);
}else{
rightSide.addView(v);
}
//sets the bottom margin since it needs to be part of the parent before we
//can get the layout params
LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) v.getLayoutParams();
params.setMargins(0, 0, 0, (int) c.getResources().getDimension(R.dimen.margin_normal));
v.setLayoutParams(params);
v.requestLayout();
//adds the index
index++;
}
}
正在初始化
public class MyApplication extends Application {
public static DisplayMetrics metrics;
private Typeface exoBlack;
private Tracker mTracker;
@Override
public void onCreate() {
super.onCreate();
LeakCanary.install(this);
WindowManager wm = (WindowManager) this.getSystemService(Context.WINDOW_SERVICE);
metrics = new DisplayMetrics();
wm.getDefaultDisplay().getMetrics(metrics);
Fresco.initialize(this);
}
}
样本日志
12-22 15:52:47.424 32462 32462 V unknown:AbstractDraweeController: controller 77d4657 null -> 0: initialize
12-22 15:52:47.425 32462 32462 V unknown:AbstractDraweeController: controller 77d4657 0: setHierarchy: com.facebook.drawee.generic.GenericDraweeHierarchy@a0fa544
12-22 15:52:47.435 32462 32462 V unknown:AbstractDraweeController: controller 3a5f0f3 null -> 1: initialize
12-22 15:52:47.435 32462 32462 V unknown:AbstractDraweeController: controller 3a5f0f3 1: setHierarchy: com.facebook.drawee.generic.GenericDraweeHierarchy@c03d1b0
12-22 15:52:47.442 32462 32462 V unknown:AbstractDraweeController: controller ef0f7ae null -> 2: initialize
12-22 15:52:47.442 32462 32462 V unknown:AbstractDraweeController: controller ef0f7ae 2: setHierarchy: com.facebook.drawee.generic.GenericDraweeHierarchy@6a4a94f
12-22 15:52:47.448 32462 32462 V unknown:AbstractDraweeController: controller 1cc58dc null -> 3: initialize
12-22 15:52:47.449 32462 32462 V unknown:AbstractDraweeController: controller 1cc58dc 3: setHierarchy: com.facebook.drawee.generic.GenericDraweeHierarchy@d3d0de5
12-22 15:52:47.455 32462 32462 V unknown:AbstractDraweeController: controller 158e0ba null -> 4: initialize
12-22 15:52:47.455 32462 32462 V unknown:AbstractDraweeController: controller 158e0ba 4: setHierarchy: com.facebook.drawee.generic.GenericDraweeHierarchy@12c8b6b
12-22 15:52:47.459 32462 32462 V unknown:AbstractDraweeController: controller 3a5f0f3 1: onAttach: request needs submit
12-22 15:52:47.463 32462 32462 V unknown:AbstractDraweeController: controller 3a5f0f3 1: submitRequest: dataSource: ab5a361
12-22 15:52:47.464 32462 32462 V unknown:AbstractDraweeController: controller 1cc58dc 3: onAttach: request needs submit
12-22 15:52:47.465 32462 32462 V unknown:AbstractDraweeController: controller 1cc58dc 3: submitRequest: dataSource: 5244e86
12-22 15:52:47.465 32462 32462 V unknown:AbstractDraweeController: controller 77d4657 0: onAttach: request needs submit
12-22 15:52:47.466 32462 32462 V unknown:AbstractDraweeController: controller 77d4657 0: submitRequest: dataSource: 2067347
12-22 15:52:47.466 32462 32462 V unknown:AbstractDraweeController: controller ef0f7ae 2: onAttach: request needs submit
12-22 15:52:47.467 32462 32462 V unknown:AbstractDraweeController: controller ef0f7ae 2: submitRequest: dataSource: 3c8e774
12-22 15:52:47.467 32462 32462 V unknown:AbstractDraweeController: controller 158e0ba 4: onAttach: request needs submit
12-22 15:52:47.468 32462 32462 V unknown:AbstractDraweeController: controller 158e0ba 4: submitRequest: dataSource: ac8149d
12-22 15:52:47.481 32462 32528 V unknown:BufferedDiskCache: Did not find image for https://placekitten.com/g/201/300 in staging area
12-22 15:52:47.481 32462 32528 V unknown:BufferedDiskCache: Disk cache read for https://placekitten.com/g/201/300
12-22 15:52:47.483 32462 32528 V unknown:BufferedDiskCache: Disk cache miss for https://placekitten.com/g/201/300
12-22 15:52:58.837 491 491 V unknown:AbstractDraweeController: controller 77d4657 null -> 0: initialize
12-22 15:52:58.837 491 491 V unknown:AbstractDraweeController: controller 77d4657 0: setHierarchy: com.facebook.drawee.generic.GenericDraweeHierarchy@a0fa544
12-22 15:52:58.847 491 491 V unknown:AbstractDraweeController: controller 3a5f0f3 null -> 1: initialize
12-22 15:52:58.848 491 491 V unknown:AbstractDraweeController: controller 3a5f0f3 1: setHierarchy: com.facebook.drawee.generic.GenericDraweeHierarchy@c03d1b0
12-22 15:52:58.856 491 491 V unknown:AbstractDraweeController: controller ef0f7ae null -> 2: initialize
12-22 15:52:58.856 491 491 V unknown:AbstractDraweeController: controller ef0f7ae 2: setHierarchy: com.facebook.drawee.generic.GenericDraweeHierarchy@6a4a94f
12-22 15:52:58.862 491 491 V unknown:AbstractDraweeController: controller 1cc58dc null -> 3: initialize
12-22 15:52:58.863 491 491 V unknown:AbstractDraweeController: controller 1cc58dc 3: setHierarchy: com.facebook.drawee.generic.GenericDraweeHierarchy@d3d0de5
12-22 15:52:58.869 491 491 V unknown:AbstractDraweeController: controller 158e0ba null -> 4: initialize
12-22 15:52:58.869 491 491 V unknown:AbstractDraweeController: controller 158e0ba 4: setHierarchy: com.facebook.drawee.generic.GenericDraweeHierarchy@12c8b6b
12-22 15:52:58.872 491 491 V unknown:AbstractDraweeController: controller 3a5f0f3 1: onAttach: request needs submit
12-22 15:52:58.878 491 491 V unknown:AbstractDraweeController: controller 3a5f0f3 1: submitRequest: dataSource: ab5a361
12-22 15:52:58.878 491 491 V unknown:AbstractDraweeController: controller 1cc58dc 3: onAttach: request needs submit
12-22 15:52:58.879 491 491 V unknown:AbstractDraweeController: controller 1cc58dc 3: submitRequest: dataSource: 5244e86
12-22 15:52:58.879 491 491 V unknown:AbstractDraweeController: controller 77d4657 0: onAttach: request needs submit
12-22 15:52:58.880 491 491 V unknown:AbstractDraweeController: controller 77d4657 0: submitRequest: dataSource: 2067347
12-22 15:52:58.880 491 491 V unknown:AbstractDraweeController: controller ef0f7ae 2: onAttach: request needs submit
12-22 15:52:58.881 491 491 V unknown:AbstractDraweeController: controller ef0f7ae 2: submitRequest: dataSource: 3c8e774
12-22 15:52:58.881 491 491 V unknown:AbstractDraweeController: controller 158e0ba 4: onAttach: request needs submit
12-22 15:52:58.882 491 491 V unknown:AbstractDraweeController: controller 158e0ba 4: submitRequest: dataSource: ac8149d
12-22 15:52:58.898 491 535 V unknown:BufferedDiskCache: Did not find image for https://placekitten.com/g/201/300 in staging area
12-22 15:52:58.899 491 535 V unknown:BufferedDiskCache: Disk cache read for https://placekitten.com/g/201/300
12-22 15:52:58.904 491 535 V unknown:BufferedDiskCache: Disk cache miss for https://placekitten.com/g/201/300
list
<application
android:name=".utils.MyApplication"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:logo="@drawable/home"
android:screenOrientation="portrait"
android:theme="@style/AppTheme" >
最佳答案
试试这个
SimpleDraweeView imageView= (SimpleDraweeView) v.findViewById(R.id.full_ad_unit);
Uri imageUri = Uri.parse(imagePath);
ImageRequest request = ImageRequest.fromUri(imageUri);
DraweeController controller = Fresco.newDraweeControllerBuilder()
.setImageRequest(request)
.setOldController(imageView.getController()).build();
Log.e(TAG, "ImagePath uri " + imageUri);
imageView.setController(controller);
关于android - 图像未在 Fresco 中加载，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34422339/
我在Rails工作并有以下类(class):classPlayer当我运行时bundleexecrailsconsole然后尝试:a=Player.new("me",5.0,"UCLA")我回来了:=>#我不知道为什么Player对象不会在这里初始化。关于可能导致此问题的操作/解释的任何建议？谢谢，马里奥格 最佳答案 havenoideawhythePlayerobjectwouldn'tbeinitializedhere它没有初始化很简单，因为你还没有初始化它!您已经覆盖了ActiveRecord::Base初始化方法，但您没有调
我有带有Logo图像的公司模型has_attached_file:logo我用他们的Logo创建了许多公司。现在，我需要添加新样式has_attached_file:logo,:styles=>{:small=>"30x15>",:medium=>"155x85>"}我是否应该重新上传所有旧数据以重新生成新样式？我不这么认为……或者有什么rake任务可以重新生成样式吗？ 最佳答案 参见Thumbnail-Generation.如果rake任务不适合你，你应该能够在控制台中使用一个片段来调用重新处理!关于相关公司
我正在尝试使用Ruby2.0.0和Rails4.0.0提供的API从imgur中提取图像。我已尝试按照Ruby2.0.0文档中列出的各种方式构建http请求，但均无济于事。代码如下:require'net/http'require'net/https'defimgurheaders={"Authorization"=>"Client-ID"+my_client_id}path="/3/gallery/image/#{img_id}.json"uri=URI("https://api.imgur.com"+path)request,data=Net::HTTP::Get.new(path
2022/8/4更新支持加入水印水印必须包含透明图像，并且水印图像大小要等于原图像的大小pythonconvert_image_to_video.py-f30-mwatermark.pngim_dirout.mkv2022/6/21更新让命令行参数更加易用新的命令行使用方法pythonconvert_image_to_video.py-f30im_dirout.mkvFFMPEG命令行转换一组JPG图像到视频时，是将这组图像视为MJPG流。我需要转换一组PNG图像到视频，FFMPEG就不认了。pyav内置了ffmpeg库，不需要系统带有ffmpeg工具因此我使用ffmpeg的python包装p
最近因为项目需要，需要将Android手机系统自带的某个系统软件反编译并更改里面某个资源，并重新打包，签名生成新的自定义的apk，下面我来介绍一下我的实现过程。APK修改，分为以下几步：反编译解包,修改,重打包,修改签名等步骤。安卓apk修改准备工作1.系统配置好JavaJDK环境变量2.需要root权限的手机（针对系统自带apk,其他软件免root）3.Auto-Sign签名工具4.apktool工具安卓apk修改开始反编译本文拿Android系统里面的Settings.apk做demo,具体如何将apk获取出来在此就不过多介绍了，直接进入主题：按键win+R输入cmd，打开命令窗口，并将路
有这样的事吗？我想在Ruby程序中使用它。 最佳答案 试试这个http://csl.sublevel3.org/jp2a/此外，Imagemagick可能还有一些东西 关于ruby-是否有将图像文件转换为ASCII艺术的命令行程序或库？，我们在StackOverflow上找到一个类似的问题： https://stackoverflow.com/questions/6510445/
我正在使用Dragonfly在Rails3.1应用程序上处理图像。我正在努力通过url将图像分配给模型。我有一个很好的表格:{:multipart=>true}do|f|%>RemovePicture?Dragonfly的文档指出:Dragonfly提供了一个直接从url分配的访问器:@album.cover_image_url='http://some.url/file.jpg'但是当我在控制台中尝试时:=>#ruby-1.9.2-p290>picture.image_url="http://i.imgur.com/QQiMz.jpg"=>"http://i.imgur.com/QQ
我对图像处理完全陌生。我对JPEG内部是什么以及它是如何工作一无所知。我想知道，是否可以在某处找到执行以下简单操作的ruby代码:打开jpeg文件。遍历每个像素并将其颜色设置为fx绿色。将结果写入另一个文件。我对如何使用ruby-vips库实现这一点特别感兴趣https://github.com/ender672/ruby-vips我的目标-学习如何使用ruby-vips执行基本的图像处理操作(Gamma校正、亮度、色调……)任何指向比“helloworld”更复杂的工作示例的链接——比如ruby-vips的github页面上的链接，我们将不胜感激!如果有ruby-
Organization和Image具有一对一的关系。Image有一个名为filename的列，它存储文件的路径。我在Assets管道中包含这样一个文件:app/assets/other/image.jpg。播种时如何包含此文件的路径？我已经在我的种子文件中尝试过:@organization=...@organization.image.create!(filename:File.open('app/assets/other/image.jpg'))#Ialsotried:#@organization.image.create!(filename:'app/assets/other/i
默认情况下:回形针gem将所有附件存储在公共(public)目录中。出于安全原因，我不想将附件存储在公共(public)目录中，所以我将它们保存在应用程序根目录的uploads目录中:classPost我没有指定url选项，因为我不希望每个图像附件都有一个url。如果指定了url:那么拥有该url的任何人都可以访问该图像。这是不安全的。在user#show页面中:我想实际显示图像。如果我使用所有回形针默认设置，那么我可以这样做，因为图像将在公共(public)目录中并且图像将具有一个url:Someimage:看来，如果我将图像附件保存在公共(public)目录之外并且不指定url(同