毕加索图片在Android中加载缓慢,为什么? [英] Picasso Images are loading slow in android, why?
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问题描述
几次点击后,毕加索自由影像中的图像就会加载到仿真器中,而且速度非常慢.为什么加载这么慢?我该怎么做才能使它们加载更快.我尝试了png文件和jpg.
The images from the Picasso libery are loading in the emulater after a few clicks and very slow. Why are they loading so slow? And what do I have to do to make them load faster. I tried it with png files and jpg.
Java代码
private int a;
ImageView ivImageFromUrl;
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
Button button = (Button) v;
a = (byte) (Math.random() * 5);
switch (a) {
case 1:
Picasso.with(getApplicationContext()).load("http://icons.iconarchive.com/icons/crountch/one-piece-jolly-roger/72/Luffys-flag-2-icon.png").into(ivImageFromUrl);
break;
case 2:
Picasso.with(getApplicationContext()).load("http://i40.tinypic.com/2i8xait.jpg").into(ivImageFromUrl);
break;
case 3:
Picasso.with(getApplicationContext()).load("http://i41.tinypic.com/2i8xahh.jpg").into(ivImageFromUrl);
break;
case 4:
Picasso.with(getApplicationContext()).load("http://i42.tinypic.com/2i8xahk.jpg").into(ivImageFromUrl);
break;
case 5:
Picasso.with(getApplicationContext()).load("http://i40.tinypic.com/2i8xagp.jpg").into(ivImageFromUrl);
break;
}
}
}
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" />
推荐答案
如果图像太大,则可能需要一些时间.
If your images are too large, then it may take some time.
如果您需要显示个人资料图片(在您的布局中尺寸为350x350),那么为什么要加载完整图片.根据您的要求调整图像大小.
If you need to show profile picture, whose size in your layout is 350x350, then why load full image. Re-size the image as per your requirement.
Picasso.with(getApplicationContext()).load(filePath).resize(400,400).centerCrop().into(imageView);
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