我试图在Fresco中加载图片，但图片似乎无法加载。当我添加占位符视图时，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，而且我在Manifest中有互联网使用。
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++;
}
}
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);
}
}
示例日志
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
清单
<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" >
答案 0 :(得分：7)
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);
答案 1 :(得分：2)
如果加载大图像有问题，请在配置图像管道时启用下采样。</ p>
像这样编写你的Fresco初始化
ImagePipelineConfig config = ImagePipelineConfig.newBuilder(this)
.setDownsampleEnabled(true)
...
.build();
Fresco.initialize(this, config);
答案 2 :(得分：2)
我知道这是一个老问题，但对于那些进入这里的人：
Fresco不支持android:layout_width="wrap_content"和android:layout_height="wrap_content"。这个问题已经得到了充分的回答here。
答案 3 :(得分：0)
我不知道逻辑，但Fresco更喜欢从文件中获取Uri。首先将您的uri转换为文件，然后从该文件中获取Uri。它适用于本地存储。
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.fromFile(new File(uri)));
}
答案 4 :(得分：0)
在GitHub HERE的fresco存储库中报告了类似的问题（在主要报道的问题下面的评论中）
根据报告的开发人员对该问题的评论：
这似乎是一个随机的事情：大多数图像都可以。当缓存是 清除了测试，少数图像是＆＃34;未加载＆＃34;不是 运行之间相同。我＆＃34; 200＆＃34; apache对图像的响应 正确加载并显示（apache日志）。而且根本没有记录 随机崩溃的图像。
我建议其他开发人员针对此问题尝试以下建议：
(From the issue report page)清除缓存并重试。(From the issue report page)使用HTTP代理/监视器查找从服务器获得的响应。如果您收到204 No Content，则服务器可能不接受用户代理标头。(My suggestion)尝试使用完全不同的网址加载图片，看看它是针对每张图片还是仅针对此图片。如果只是这个问题可能与图像有关。同一问题的另一份报告HERE - 但是这个问题对解决方案没有任何具体的答复。
您可能还想订阅这些帖子上的通知，以防有人很快发布一个非常好的解决方案并将其合并。然后你可以获得最新版本并冷静下来。 :)（如果以上任何一项都不适合您。）
答案 5 :(得分：0)
您需要直接链接，例如：http://i.imgur.com/IJF8x9D.jpg
你应该添加uri的文件类型结尾。对于这种情况：“.jpg”
Uri uri = Uri.parse（“http://i.imgur.com/IJF8x9D.jpg”）;
