Glide自v3.0到v4.0使用,发生了一些比较大的改变,使用方式和编程模型有了新的变化,这些变化,使得Glide的功能更加强大,性能更加优良,提供了开放的编程接口,便于开发者自定制,以适应自有项目的定制化开发。
本例给出一些最新Android Glide 4.0的新变化、新模型的简单使用方式。
写一个简单垂直线性布局:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="zhangphil.phildemo.MainActivity"> <ImageView android:id="@+id/image1" android:layout_width="100dp" android:layout_height="100dp" /> <ImageView android:id="@+id/image2" android:layout_width="100dp" android:layout_height="100dp" /> <ImageView android:id="@+id/image3" android:layout_width="100dp" android:layout_height="100dp" /> <ImageView android:id="@+id/image4" android:layout_width="100dp" android:layout_height="100dp" /> </LinearLayout>
测试的MainActivity.java,在这里面有四个不同的新版Glide 4.0使用方式:
package zhangphil.phildemo; import android.graphics.drawable.Drawable; import android.support.annotation.Nullable; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.ImageView; import com.bumptech.glide.Glide; import com.bumptech.glide.Priority; import com.bumptech.glide.RequestBuilder; import com.bumptech.glide.load.DataSource; import com.bumptech.glide.load.engine.DiskCacheStrategy; import com.bumptech.glide.load.engine.GlideException; import com.bumptech.glide.load.resource.drawable.DrawableTransitionOptions; import com.bumptech.glide.request.RequestListener; import com.bumptech.glide.request.RequestOptions; import com.bumptech.glide.request.target.Target; public class MainActivity extends AppCompatActivity { private String url = "https://www.baidu.com/img/bd_logo1.png"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ImageView image1 = (ImageView) findViewById(R.id.image1); ImageView image2 = (ImageView) findViewById(R.id.image2); ImageView image3 = (ImageView) findViewById(R.id.image3); ImageView image4 = (ImageView) findViewById(R.id.image4); load1(image1); load2(image2); load3(image3); load4(image4); } private void load1(ImageView image) { Glide.with(this) .load(url) .apply(new RequestOptions().circleCrop().placeholder(R.mipmap.ic_launcher)) .transition(new DrawableTransitionOptions().crossFade(2000)) .into(image); } private void load2(ImageView image) { RequestOptions options = new RequestOptions() .centerCrop() .placeholder(R.mipmap.ic_launcher_round) .error(android.R.drawable.stat_notify_error) .priority(Priority.HIGH) //.skipMemoryCache(true) .diskCacheStrategy(DiskCacheStrategy.AUTOMATIC); Glide.with(this) .load(url) .apply(options) .into(image); } private void load3(ImageView image) { Glide.with(this) .load(url) .listener(new RequestListener<Drawable>() { @Override public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Drawable> target, boolean isFirstResource) { return false; } @Override public boolean onResourceReady(Drawable resource, Object model, Target<Drawable> target, DataSource dataSource, boolean isFirstResource) { return false; } }) .apply(new RequestOptions().centerInside()) .thumbnail(Glide.with(this).load(R.mipmap.ic_launcher)) .into(image); } private void load4(ImageView image) { RequestBuilder<Drawable> mRequestBuilder = Glide.with(this).load(url); mRequestBuilder.listener(new RequestListener<Drawable>() { @Override public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Drawable> target, boolean isFirstResource) { return false; } @Override public boolean onResourceReady(Drawable resource, Object model, Target<Drawable> target, DataSource dataSource, boolean isFirstResource) { return false; } }).transition(new DrawableTransitionOptions().crossFade(2000)) .apply(new RequestOptions().circleCrop()) .into(image); } }
本例给出了几个不同的方式使用新版Glide 4.0加载网络图片,对比这四种方式,可以举一反三变化出更多使用方法。
不要忘了添加读写存储和访问网络的权限:
<uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
代码运行结果:
附录:
1,Glide在github上的开源项目主页:https://github.com/bumptech/glide
原创文章,作者:奋斗,如若转载,请注明出处:https://blog.ytso.com/3128.html