前言
最近在做一个Glide的工具类，公司的项目里没有cdn加载图片很慢，想添加图片加载进度。找了一圈发现Glide本身并不提供进度监听
添加依赖
api 'com.github.bumptech.glide:glide:4.9.0'
api 'com.github.bumptech.glide:okhttp3-integration:4.9.0'
annotationProcessor 'com.github.bumptech.glide:annotations:4.9.0'
annotationProcessor 'com.github.bumptech.glide:compiler:4.9.0'
如果你已经移植了andorid x
api 'com.github.bumptech.glide:glide:4.9.0'
api 'com.github.bumptech.glide:okhttp3-integration:4.9.0'
//解决Glide找不到Android声明库问题
annotationProcessor 'androidx.annotation:annotation:1.0.0'
annotationProcessor 'com.github.bumptech.glide:compiler:4.9.0'
注意 这里第三个依赖一定要使用annotationProcessor。
生成GlideApp
@GlideModule
public class HydraGlideModule extends AppGlideModule {
}
这里其实直接继承AppGlideModule 添加@GlideModule，同步项目就可以生成GlideApp。
添加监听
关于添加进度监听我就直接贴代码了
OkHttpUrlLoader
public class OkHttpUrlLoader implements ModelLoader<GlideUrl, InputStream> {
private final Call.Factory client;
// Public API.
@SuppressWarnings("WeakerAccess")
public OkHttpUrlLoader(Call.Factory client) {
this.client = client;
}
@Override
public boolean handles(GlideUrl url) {
return true;
}
@Override
public LoadData<InputStream> buildLoadData(GlideUrl model, int width, int height,
Options options) {
return new LoadData<>(model, new OkHttpStreamFetcher(client, model));
}
/**
* The default factory for {@link OkHttpUrlLoader}s.
*/
// Public API.
@SuppressWarnings("WeakerAccess")
public static class Factory implements ModelLoaderFactory<GlideUrl, InputStream> {
private static volatile Call.Factory internalClient;
private final Call.Factory client;
private static Call.Factory getInternalClient() {
if (internalClient == null) {
synchronized (Factory.class) {
if (internalClient == null) {
internalClient = new OkHttpClient();
}
}
}
return internalClient;
}
/**
* Constructor for a new Factory that runs requests using a static singleton client.
*/
public Factory() {
this(getInternalClient());
}
/**
* Constructor for a new Factory that runs requests using given client.
*
* @param client this is typically an instance of {@code OkHttpClient}.
*/
public Factory(Call.Factory client) {
this.client = client;
}
@Override
public ModelLoader<GlideUrl, InputStream> build(MultiModelLoaderFactory multiFactory) {
return new OkHttpUrlLoader(client);
}
@Override
public void teardown() {
// Do nothing, this instance doesn't own the client.
}
}
}
OkHttpStreamFetcher
public class OkHttpStreamFetcher implements DataFetcher<InputStream>,
okhttp3.Callback {
private static final String TAG = "OkHttpFetcher";
private final Call.Factory client;
private final GlideUrl url;
@SuppressWarnings("WeakerAccess")
@Synthetic
InputStream stream;
@SuppressWarnings("WeakerAccess")
@Synthetic
ResponseBody responseBody;
private volatile Call call;
private DataCallback<? super InputStream> callback;
// Public API.
@SuppressWarnings("WeakerAccess")
public OkHttpStreamFetcher(Call.Factory client, GlideUrl url) {
this.client = client;
this.url = url;
}
@Override
public void loadData(Priority priority, final DataCallback<? super InputStream> callback) {
Request.Builder requestBuilder = new Request.Builder().url(url.toStringUrl());
for (Map.Entry<String, String> headerEntry : url.getHeaders().entrySet()) {
String key = headerEntry.getKey();
requestBuilder.addHeader(key, headerEntry.getValue());
}
Request request = requestBuilder.build();
this.callback = callback;
call = client.newCall(request);
if (Build.VERSION.SDK_INT != Build.VERSION_CODES.O) {
call.enqueue(this);
} else {
try {
// Calling execute instead of enqueue is a workaround for #2355, where okhttp throws a
// ClassCastException on O.
onResponse(call, call.execute());
} catch (IOException e) {
onFailure(call, e);
} catch (ClassCastException e) {
// It's not clear that this catch is necessary, the error may only occur even on O if
// enqueue is used.
onFailure(call, new IOException("Workaround for framework bug on O", e));
}
}
}
@Override
public void onFailure(@NonNull Call call, @NonNull IOException e) {
if (Log.isLoggable(TAG, Log.DEBUG)) {
Log.d(TAG, "OkHttp failed to obtain result", e);
}
callback.onLoadFailed(e);
}
@Override
public void onResponse(@NonNull Call call, @NonNull Response response) throws IOException {
responseBody = response.body();
if (response.isSuccessful()) {
long contentLength = Preconditions.checkNotNull(responseBody).contentLength();
stream = ContentLengthInputStream.obtain(responseBody.byteStream(), contentLength);
callback.onDataReady(stream);
} else {
callback.onLoadFailed(new HttpException(response.message(), response.code()));
}
}
@Override
public void cleanup() {
try {
if (stream != null) {
stream.close();
}
} catch (IOException e) {
// Ignored
}
if (responseBody != null) {
responseBody.close();
}
callback = null;
}
@Override
public void cancel() {
Call local = call;
if (local != null) {
local.cancel();
}
}
@NonNull
@Override
public Class<InputStream> getDataClass() {
return InputStream.class;
}
@NonNull
@Override
public DataSource getDataSource() {
return DataSource.REMOTE;
}
}
ProgressListener
public interface ProgressListener {
/**
* 图片加载进度回调
*
* @param isDone
* @param progress
*/
void onLoadProgress(boolean isDone, int progress);
/**
* 加载失败
*/
void onLoadFailed();
}
ProgressInterceptor 拦截器
public class ProgressInterceptor implements Interceptor {
public static final Map<String, ProgressListener> LISTENER_MAP = new HashMap<>();
public static void addListener(String url, ProgressListener listener) {
LISTENER_MAP.put(url, listener);
}
public static void removeListener(String url) {
LISTENER_MAP.remove(url);
}
@Override
public Response intercept(Chain chain) throws IOException {
Request request = chain.request();
Response response = chain.proceed(request);
String url = request.url().toString();
ResponseBody body = response.body();
Response newResponse =
response.newBuilder().body(new ProgressResponseBody(url, body)).build();
return newResponse;
}
}
ProgressResponseBody 计算加载进度，并在自定义的拦截器中使用
public class ProgressResponseBody extends ResponseBody {
private BufferedSource bufferedSource;
private ResponseBody responseBody;
private ProgressListener listener;
public ProgressResponseBody(String url, ResponseBody responseBody) {
this.responseBody = responseBody;
listener = ProgressInterceptor.LISTENER_MAP.get(url);
}
@Override
public MediaType contentType() {
return responseBody.contentType();
}
@Override
public long contentLength() {
return responseBody.contentLength();
}
@Override
public BufferedSource source() {
if (bufferedSource == null) {
bufferedSource = Okio.buffer(new ProgressSource(responseBody.source()));
}
return bufferedSource;
}
private class ProgressSource extends ForwardingSource {
long totalBytesRead = 0;
int currentProgress;
ProgressSource(Source source) {
super(source);
}
@Override
public long read(Buffer sink, long byteCount) throws IOException {
long bytesRead = super.read(sink, byteCount);
long fullLength = responseBody.contentLength();
if (bytesRead == -1) {
totalBytesRead = fullLength;
} else {
totalBytesRead += bytesRead;
}
int progress = (int) (100f * totalBytesRead / fullLength);
if (listener != null && progress != currentProgress) {
listener.onLoadProgress(progress == 100, progress);
}
if (listener != null && totalBytesRead == fullLength) {
listener = null;
}
currentProgress = progress;
return bytesRead;
}
}
}
在Glide中使用
@GlideModule
public class HydraGlideModule extends AppGlideModule {
@Override
public boolean isManifestParsingEnabled() {
return super.isManifestParsingEnabled();
}
@Override
public void applyOptions(@NonNull Context context, @NonNull GlideBuilder builder) {
super.applyOptions(context, builder);
}
@Override
public void registerComponents(@NonNull Context context, @NonNull Glide glide, @NonNull Registry registry) {
OkHttpClient okHttpClient = new OkHttpClient.Builder()
.addInterceptor(new ProgressInterceptor())
.build();
registry.replace(GlideUrl.class, InputStream.class, new OkHttpUrlLoader.Factory(okHttpClient));
}
}
具体使用
public void loadWhitListener(final Context context, final String url, final ImageView imageView,
ProgressListener progressListener) {
if (check(context, url, imageView)) {
LogUtils.i("ImageUtils 传入的参数错误,请检查!!!");
return;
}
ProgressInterceptor.addListener(url, progressListener);
GlideApp.with(context)
.load(url)
.diskCacheStrategy(DiskCacheStrategy.NONE)
.skipMemoryCache(true)
.into(new DrawableImageViewTarget(imageView) {
@Override
public void onLoadStarted(@Nullable Drawable placeholder) {
super.onLoadStarted(placeholder);
imageView.setImageResource(R.color.color_646464);
}
@Override
public void onLoadFailed(@Nullable Drawable errorDrawable) {
super.onLoadFailed(errorDrawable);
ProgressInterceptor.LISTENER_MAP.get(url).onLoadFailed();
imageView.setImageResource(R.color.color_transparent);
}
@Override
public void onResourceReady(@NonNull Drawable resource, @Nullable Transition<
? super Drawable> transition) {
super.onResourceReady(resource, transition);
ProgressInterceptor.removeListener(url);
}
});
}
相关资料
Android Glide4.0+图片加载进度监听
基于Glide V4.0封装的GlideImageView，可监听加载图片时的进度
实现带进度的Glide图片加载功能(基于3.7)
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