com.bumptech.glide.request.target.ViewTarget类的使用及代码示例

x33g5p2x  于2022-02-01 转载在 其他  
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本文整理了Java中com.bumptech.glide.request.target.ViewTarget类的一些代码示例，展示了ViewTarget类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。ViewTarget类的具体详情如下：
包路径：com.bumptech.glide.request.target.ViewTarget
类名称：ViewTarget

ViewTarget介绍

[英]A base Target for loading android.graphics.Bitmaps into Views that provides default implementations for most most methods and can determine the size of views using a android.view.ViewTreeObserver.OnDrawListener.

To detect View reuse in android.widget.ListView or any android.view.ViewGroup that reuses views, this class uses the View#setTag(Object) method to store some metadata so that if a view is reused, any previous loads or resources from previous loads can be cancelled or reused.

Any calls to View#setTag(Object)} on a View given to this class will result in excessive allocations and and/or IllegalArgumentExceptions. If you must call View#setTag(Object) on a view, use #setTagId(int) to specify a custom tag for Glide to use.

Subclasses must call super in #onLoadCleared(Drawable)
[中]加载android的基本目标。图样将位图映射到视图中，为大多数方法提供默认实现，并可以使用安卓系统确定视图的大小。看法ViewTreeObserver。我是你的听众。
检测android中的视图重用。小装置。ListView或任何安卓系统。看法ViewGroup重用视图，该类使用View#setTag（Object）方法存储一些元数据，以便在重用视图时，可以取消或重用以前加载的任何加载或资源。
在给定给该类的视图上调用View#setTag（Object）}将导致过度分配和/或IllegalArgumentException。如果必须在视图上调用View#setTag（Object），请使用#setTagId（int）指定Glide要使用的自定义标记。
子类必须在#onLoadCleared（Drawable）中调用super

代码示例

代码示例来源：origin: bumptech/glide

/**
 * Returns any stored request using {@link android.view.View#getTag()}.
 *
 * <p> For Glide to function correctly, Glide must be the only thing that calls {@link
 * View#setTag(Object)}. If the tag is cleared or put to another object type, Glide will not be
 * able to retrieve and cancel previous loads which will not only prevent Glide from reusing
 * resource, but will also result in incorrect images being loaded and lots of flashing of images
 * in lists. As a result, this will throw an {@link java.lang.IllegalArgumentException} if {@link
 * android.view.View#getTag()}} returns a non null object that is not an {@link
 * com.bumptech.glide.request.Request}. </p>
 */
@Override
@Nullable
public Request getRequest() {
 Object tag = getTag();
 Request request = null;
 if (tag != null) {
  if (tag instanceof Request) {
   request = (Request) tag;
  } else {
   throw new IllegalArgumentException(
     "You must not call setTag() on a view Glide is targeting");
  }
 }
 return request;
}

代码示例来源：origin: bumptech/glide

/**
 * Stores the request using {@link View#setTag(Object)}.
 *
 * @param request {@inheritDoc}
 */
@Override
public void setRequest(@Nullable Request request) {
 setTag(request);
}

代码示例来源：origin: bumptech/glide

@Override
public void onBindViewHolder(GifViewHolder holder, int position) {
 final Api.GifResult result = results[position];
 holder.gifView.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View view) {
   ClipboardManager clipboard =
     (ClipboardManager) activity.getSystemService(Context.CLIPBOARD_SERVICE);
   ClipData clip =
     ClipData.newPlainText("giphy_url", result.images.fixed_height.url);
   Preconditions.checkNotNull(clipboard).setPrimaryClip(clip);
   Intent fullscreenIntent = FullscreenActivity.getIntent(activity, result);
   activity.startActivity(fullscreenIntent);
  }
 });
 // clearOnDetach let's us stop animating GifDrawables that RecyclerView hasn't yet recycled
 // but that are currently off screen.
 requestBuilder.load(result).into(holder.gifView).clearOnDetach();
 preloadSizeProvider.setView(holder.gifView);
}

代码示例来源：origin: bumptech/glide

@Test
public void testCanSetAndRetrieveRequest() {
 target.setRequest(request);
 assertEquals(request, target.getRequest());
}

代码示例来源：origin: bumptech/glide

@Test
public void testDoesNotAddMultipleListenersIfMultipleCallbacksAreAdded() {
 SizeReadyCallback cb1 = mock(SizeReadyCallback.class);
 SizeReadyCallback cb2 = mock(SizeReadyCallback.class);
 target.getSize(cb1);
 target.getSize(cb2);
 assertThat(shadowObserver.getPreDrawListeners()).hasSize(1);
}

代码示例来源：origin: waynell/VideoListPlayer

@Override
public void applyOptions(final Context context, GlideBuilder builder) {
  ViewTarget.setTagId(R.id.glide_loader);
  builder.setDiskCache(new DiskLruCacheFactory(new DiskLruCacheFactory.CacheDirectoryGetter
      () {
    @Override
    public File getCacheDirectory() {
      return context.getExternalCacheDir();
    }
  }, DiskCache.Factory.DEFAULT_DISK_CACHE_SIZE));
}

代码示例来源：origin: bumptech/glide

@SuppressWarnings("WeakerAccess")
@Synthetic void pauseMyRequest() {
 Request request = getRequest();
 // If the Request were cleared by the developer, it would be null here. The only way it's
 // present is if the developer hasn't previously cleared this Target.
 if (request != null) {
  isClearedByUs = true;
  request.clear();
  isClearedByUs = false;
 }
}

代码示例来源：origin: bumptech/glide

/**
 * Sets the given {@link android.graphics.drawable.Drawable} on the view using {@link
 * android.widget.ImageView#setImageDrawable(android.graphics.drawable.Drawable)}.
 *
 * @param placeholder {@inheritDoc}
 */
@Override
public void onLoadStarted(@Nullable Drawable placeholder) {
 super.onLoadStarted(placeholder);
 setResourceInternal(null);
 setDrawable(placeholder);
}

代码示例来源：origin: bumptech/glide

/**
 * Sets the given {@link android.graphics.drawable.Drawable} on the view using {@link
 * android.widget.ImageView#setImageDrawable(android.graphics.drawable.Drawable)}.
 *
 * @param errorDrawable {@inheritDoc}
 */
@Override
public void onLoadFailed(@Nullable Drawable errorDrawable) {
 super.onLoadFailed(errorDrawable);
 setResourceInternal(null);
 setDrawable(errorDrawable);
}

代码示例来源：origin: bumptech/glide

/**
 * Sets the given {@link android.graphics.drawable.Drawable} on the view using {@link
 * android.widget.ImageView#setImageDrawable(android.graphics.drawable.Drawable)}.
 *
 * @param placeholder {@inheritDoc}
 */
@Override
public void onLoadCleared(@Nullable Drawable placeholder) {
 super.onLoadCleared(placeholder);
 if (animatable != null) {
  animatable.stop();
 }
 setResourceInternal(null);
 setDrawable(placeholder);
}

代码示例来源：origin: bumptech/glide

@Test
public void testDoesNotNotifyCallbackTwiceIfAddedTwice() {
 target.getSize(cb);
 target.getSize(cb);
 view.setLayoutParams(new LayoutParams(100, 100));
 shadowView.setIsLaidOut(true);
 shadowObserver.fireOnPreDrawListeners();
 verify(cb, times(1)).onSizeReady(anyInt(), anyInt());
}

代码示例来源：origin: w0080626/GankIO

@Override
public void applyOptions(Context context, GlideBuilder builder) {
  ViewTarget.setTagId(R.id.image_tag);
}

代码示例来源：origin: bumptech/glide

@Test
public void testRetrievesRequestFromPreviousTargetForView() {
 target.setRequest(request);
 ViewTarget<View, Object> second = new TestViewTarget(view);
 assertEquals(request, second.getRequest());
}

代码示例来源：origin: bumptech/glide

@Test(expected = IllegalArgumentException.class)
public void testThrowsIfViewTagIsNotRequestObject() {
 view.setTag(new Object());
 target.getRequest();
}

代码示例来源：origin: mozilla-tw/Rocket

/**
 * Sets the given {@link android.graphics.drawable.Drawable} on the view using {@link
 * android.widget.ImageView#setImageDrawable(android.graphics.drawable.Drawable)}.
 *
 * @param placeholder {@inheritDoc}
 */
@Override
public void onLoadStarted(@Nullable Drawable placeholder) {
 super.onLoadStarted(placeholder);
 setResourceInternal(null);
 setDrawable(placeholder);
}

代码示例来源：origin: mozilla-tw/Rocket

/**
 * Sets the given {@link android.graphics.drawable.Drawable} on the view using {@link
 * android.widget.ImageView#setImageDrawable(android.graphics.drawable.Drawable)}.
 *
 * @param errorDrawable {@inheritDoc}
 */
@Override
public void onLoadFailed(@Nullable Drawable errorDrawable) {
 super.onLoadFailed(errorDrawable);
 setResourceInternal(null);
 setDrawable(errorDrawable);
}

代码示例来源：origin: mozilla-tw/Rocket

/**
 * Sets the given {@link android.graphics.drawable.Drawable} on the view using {@link
 * android.widget.ImageView#setImageDrawable(android.graphics.drawable.Drawable)}.
 *
 * @param placeholder {@inheritDoc}
 */
@Override
public void onLoadCleared(@Nullable Drawable placeholder) {
 super.onLoadCleared(placeholder);
 setResourceInternal(null);
 setDrawable(placeholder);
}

代码示例来源：origin: bumptech/glide

@Test
public void testSizeCallbackIsCalledSynchronouslyIfLayoutParamsConcreteSizeSet() {
 int dimens = 444;
 LayoutParams layoutParams = new LayoutParams(dimens, dimens);
 view.setLayoutParams(layoutParams);
 shadowView.setIsLaidOut(true);
 target.getSize(cb);
 verify(cb).onSizeReady(eq(dimens), eq(dimens));
}

代码示例来源：origin: mylhyl/Android-Zxing

@Override
  public void onCreate() {
    super.onCreate();
    //因为Glide加载图片的源码中也使用了setTag和getTag模式而
    //https://github.com/bumptech/glide/issues/370
    ViewTarget.setTagId(R.string.app_name);
  }
}

代码示例来源：origin: guolindev/giffun

/**
 * Stores the request using {@link View#setTag(Object)}.
 *
 * @param request {@inheritDoc}
 */
@Override
public void setRequest(Request request) {
  setTag(request);
}

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