图片加载框架四大之一Picasso 加载 Https 图片的那些套路

Picasso

废话少说直接上代码

compile ‘com.squareup.picasso:picasso:2.5.2’

compile ‘com.squareup.okhttp3:okhttp:3.7.0’

package com.example.qundui.learndemo;

import android.content.Context;

import android.net.Uri;

import android.widget.ImageView;

import com.squareup.picasso.Picasso;

import java.io.File;

import android.content.Context;

import android.net.Uri;

import android.widget.ImageView;

import com.squareup.picasso.Picasso;

import java.io.File;

/**

* Created by qundui on 2017/4/22.

*/

public class PicassoUtils {

public static void loadImageByurl(String url, Context ctx, ImageView imageView) {
Picasso.with(ctx).load(url).into(imageView);

}
public static void loadImageByRes(int res, Context ctx, ImageView imageView) {
Picasso.with(ctx).load(res).into(imageView);

}
public static void loadImageByFile(Context ctx, ImageView iv, File file) {
Picasso
.with(ctx)
.load(file)
.into(iv);
}

public static void loadImageByURI(Context ctx, ImageView iv, int res) {
Uri uri = resourceIdToUri(ctx, res);

Picasso
.with(ctx)
.load(uri)
.into(iv);
}

public static final String ANDROID_RESOURCE = "android.resource://";
public static final String FOREWARD_SLASH = "/";

private static Uri resourceIdToUri(Context context, int resourceId) {
return Uri.parse(ANDROID_RESOURCE + context.getPackageName() + FOREWARD_SLASH + resourceId);
}

}

package com.example.qundui.learndemo;

import android.net.Uri;

import com.squareup.picasso.Downloader;

import com.squareup.picasso.NetworkPolicy;

import java.io.IOException;

import okhttp3.Cache;

import okhttp3.CacheControl;

import okhttp3.OkHttpClient;

import okhttp3.Request;

import okhttp3.ResponseBody;

/**

* Created by qundui on 2017/4/22.

*/

public class ImageDownLoader implements Downloader {

OkHttpClient client = null;

public ImageDownLoader(OkHttpClient client) {

this.client = client;

}

@Override

public Response load(Uri uri, int networkPolicy) throws IOException {

CacheControl cacheControl = null;
if (networkPolicy != 0) {
if (NetworkPolicy.isOfflineOnly(networkPolicy)) {
cacheControl = CacheControl.FORCE_CACHE;
} else {
CacheControl.Builder builder = new CacheControl.Builder();
if (!NetworkPolicy.shouldReadFromDiskCache(networkPolicy)) {
builder.noCache();
}
if (!NetworkPolicy.shouldWriteToDiskCache(networkPolicy)) {
builder.noStore();
}
cacheControl = builder.build();
}
}

Request.Builder builder = new Request.Builder().url(uri.toString());
if (cacheControl != null) {
builder.cacheControl(cacheControl);
}

okhttp3.Response response = client.newCall(builder.build()).execute();
int responseCode = response.code();
if (responseCode >= 300) {
response.body().close();
throw new ResponseException(responseCode + " " + response.message(), networkPolicy,
responseCode);
}

boolean fromCache = response.cacheResponse() != null;

ResponseBody responseBody = response.body();
return new Response(responseBody.byteStream(), fromCache, responseBody.contentLength());

}

@Override
public void shutdown() {

Cache cache = client.cache();
if (cache != null) {
try {
cache.close();
} catch (IOException ignored) {
}
}
}

}

package com.example.qundui.learndemo;

import android.app.Application;

import android.net.wifi.WifiConfiguration;

import com.squareup.picasso.Picasso;

import java.util.Collections;

import okhttp3.OkHttpClient;

import okhttp3.Protocol;

/**

* Created by qundui on 2017/4/22.

*/

public class Myapp extends Application {

@Override

public void onCreate() {

super.onCreate();

OkHttpClient client = new OkHttpClient.Builder()

.protocols(Collections.singletonList(Protocol.HTTP_1_1))

.build();

Picasso.setSingletonInstance(new Picasso.Builder(this).

downloader(new ImageDownLoader(client)).loggingEnabled(true)

.build());

}

}

package com.example.qundui.learndemo;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.ImageView;

import com.squareup.picasso.Picasso;

/**

* Created by qundui on 2017/4/22.

*/

public class Pictest extends Activity {

private ImageView iv;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.pic_test);

iv= (ImageView) findViewById(R.id.iv);

}

public void getPic(View view){

String url=”https://bmc.huochexia.com/qundui-manager/userfiles/9a29fe156da64c66adf862f912f0eeaf/images/banner/2016/12/QQ图片20161219175344.png”;

// Picasso.with(this).setLoggingEnabled(true);

// Picasso.with(this).load(url).into(iv);

PicassoUtils.loadImageByurl(url,this,iv);

}

}