[英]How to load (libary)Glide Images quicker? Android
How can I make the images download first and place it in cach and when someone pressed button then the image will directly show without delay. 我如何首先下载图像并将其放入缓存中,当有人按下按钮时,图像将立即显示而不会延迟。
Why? 为什么? Everytime I click on the button now I have a delay of a few seconds, because they loading from the internet.
现在,每次我单击按钮时,都会有几秒钟的延迟,因为它们是从Internet加载的。 It takes times, that's why I want them to be loaded and cached first.
这需要时间,这就是为什么我希望它们先被加载和缓存。 So when someone clicked on the button it will show directly in one second.
因此,当有人单击该按钮时,它将在一秒钟内直接显示。
Java: Java:
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import com.bumptech.glide.Glide;
import com.squareup.picasso.Picasso;
import java.util.Timer;
import java.util.TimerTask;
public class MainActivity extends AppCompatActivity {
private int a;
ImageView ivImageFromUrl;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ivImageFromUrl=(ImageView)findViewById(R.id.iv_image_from_url);
}
public void buttonOnClick(View v) {
// do something when the button is clicked
final Button button = (Button) v;
button.setEnabled(false);
Timer buttonTimer = new Timer();
buttonTimer.schedule(new TimerTask() {
@Override
public void run() {
runOnUiThread(new Runnable() {
Don't look at the delay of 1000 ms, it's not important because I want a delay of 1 second every time someone clicked on the button. 不要看1000 ms的延迟,这并不重要,因为我希望每次有人单击按钮时都延迟1秒。 I did the delay also to let it look like they are loading but it's not good...Sometimes I must wait 5 seconds for the images to get loaded.
我也做了延迟,以使其看起来像正在加载,但这不是很好。有时我必须等待5秒才能加载图像。
@Override
public void run() {
button.setEnabled(true);
}
});
}
}, 1000);
((Button) v).setText("Random image");
a = (int) (Math.random() * 4);
switch (a) {
case 0:
Glide.with(this).load("imagelink").into(ivImageFromUrl);
break;
case 1:
Glide.with(this).load("imagelink").into(ivImageFromUrl);
break;
case 2:
Glide.with(this).load("imagelink").into(ivImageFromUrl);
break;
case 3:
Glide.with(this).load("imagelink").into(ivImageFromUrl);
break;
case 4:
Glide.with(this).load("imagelink").into(ivImageFromUrl);
break;
}
}
}
XML: XML:
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
android:id="@+id/textView2" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Image text"
android:id="@+id/textView"
android:layout_below="@+id/textView2"
android:layout_centerHorizontal="true"
android:layout_marginTop="82dp" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Image"
android:id="@+id/button"
android:onClick="buttonOnClick"
android:layout_below="@+id/textView"
android:layout_centerHorizontal="true"
android:layout_marginTop="41dp" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/iv_image_from_url"
android:layout_alignParentBottom="true"
android:layout_alignRight="@+id/textView"
android:layout_alignEnd="@+id/textView"
android:layout_marginBottom="106dp"
android:layout_toRightOf="@+id/textView"
android:layout_toEndOf="@+id/textView" />
</RelativeLayout>
Glide has a dedicated API for preloading images: Glide具有专用于预加载图像的API:
Glide.with(this).load(uri).preload();
The Javadoc says: Javadoc说:
Preloads the resource into the cache using
Target.SIZE_ORIGINAL
as the target width and height.使用
Target.SIZE_ORIGINAL
作为目标宽度和高度将资源Target.SIZE_ORIGINAL
到缓存中。 Equivalent to callingpreload(int, int)
withTarget.SIZE_ORIGINAL
as the width and height.等效于使用
Target.SIZE_ORIGINAL
作为宽度和高度调用preload(int, int)
。
I'm not sure if you can speed up Glide. 我不确定您是否可以加快Glide的速度。
But if you are displaying a loading to the user, you can try to add a listener and only show the images once all of them are ready. 但是,如果要向用户显示负载,则可以尝试添加侦听器,并仅在所有图像准备就绪后才显示图像。
try this: 尝试这个:
Glide.with(this).load("imagelink").into(new GlideDrawableImageViewTarget(ivImageFromUrl) {
@Override
public void onLoadFailed(Exception e, Drawable errorDrawable) {
//Handle error
}
@Override
public void onResourceReady(GlideDrawable resource, GlideAnimation<? super GlideDrawable> animation) {
//Hide loading, show image
}
});
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.