[英]Using Glide when starting new activity
我有RecyclerView
在图像CardView
,图像是使用滑翔加载。 在onClick()
事件中,我启动了一个新的Activity:
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
val text = layout!!.findViewById<View>(R.id.item_text) as TextView
val card = layout!!.findViewById<View>(R.id.item_card) as CardView
val img = layout!!.findViewById<View>(R.id.item_image) as ImageView
val requestOptions = RequestOptions()
requestOptions.placeholder(R.drawable.placeholder)
Glide.with(this.activity.applicationContext).setDefaultRequestOptions(requestOptions).load(mDataset[position].urlToImage).into(img)
text.text = mDataset[position].title
card.setOnClickListener {
val intent = Intent(activity, ArticleActivity::class.java)
intent.putExtra("Title", mDataset[position].title)
intent.putExtra("Author", mDataset[position].source.name)
intent.putExtra("Text", mDataset[position].description)
img.transitionName = "item_image"
intent.putExtra("urlToImage", mDataset[position].urlToImage)
val options = ActivityOptionsCompat.makeSceneTransitionAnimation(this.activity, img as View, "item_image")
this.activity.startActivity(intent, options.toBundle())
}
}
但是,如果图像没有时间加载,那么当您返回此活动时,此ImageView
将为空。 在清单中:
<activity
android:name=".MainActivity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:label="@string/title_activity_main"
android:theme="@style/AppTheme"
android:launchMode="singleTop">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".ArticleActivity"
android:label="@string/title_activity_article"
android:parentActivityName=".MainActivity"
android:theme="@style/AppTheme.AppBarOverlay.TransparentStatusBar"/>
当您按下硬件后退按钮时,以及单击工具栏后退按钮时,也会发生这种情况。
解决了:
val requestOptions = RequestOptions()
requestOptions.placeholder(R.drawable.placeholder)
requestOptions.dontAnimate()
requestOptions.diskCacheStrategy(DiskCacheStrategy.ALL)
Glide.with(this.activity.applicationContext).setDefaultRequestOptions(requestOptions).load(mDataset[position].urlToImage).into(img)
Glide负载线/ GlideModule(如果有)/列表适配器代码(如果有):
这是我在使用该库进行反复试验期间使用的配置之一。 我试过了
.skipMemoryCache(true), .diskCacheStategy
让它起作用
Glide.with(itemView.getContext())
.load(groupPhotos.getImg_url()) // simple url with an image
.asBitmap()
.placeholder(R.drawable.jaya_grocer)
.error(R.drawable.cold_storage)
.dontAnimate()
.into(iv_image);
布局XML:
<ImageView
android:id="@+id/iv_list_image"
android:layout_width="match_parent"
android:layout_height="150dp"
android:layout_below="@+id/tv_list_members"
android:layout_marginTop="@dimen/std_padding"
android:adjustViewBounds="true"
android:scaleType="centerCrop"
android:src="@drawable/default_group_5" />
您可以使用滑翔的.diskCacheStrategy(DiskCacheStrategy.ALL)
从Glide缓存加载图像
val requestOptions = RequestOptions()
requestOptions.placeholder(R.drawable.placeholder)
requestOptions.dontAnimate()
requestOptions.diskCacheStrategy(DiskCacheStrategy.ALL)
Glide.with(this.activity.applicationContext)
.setDefaultRequestOptions(requestOptions)
.load(mDataset[position].urlToImage)
.into(img)
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