package cn.flightfeather.thirdapp.task;
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import android.app.Activity;
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import android.os.Environment;
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import android.util.Log;
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import android.widget.ImageView;
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import android.widget.Toast;
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import java.io.BufferedInputStream;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import cn.flightfeather.thirdapp.CommonApplication;
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import cn.flightfeather.thirdapp.R;
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import cn.flightfeather.thirdapp.bean.entity.Mediafile;
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import okhttp3.ResponseBody;
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import retrofit2.Call;
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import retrofit2.Callback;
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import retrofit2.Response;
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import retrofit2.http.GET;
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import retrofit2.http.Url;
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/**
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* Created by note_ff_1602 on 2018/2/9.
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* 下载图片并显示的task
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*/
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public class DownloadAndSetImageTask {
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private Mediafile mediafile;
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private ImageView imageView;
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private DownloadService downloadService;
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private CommonApplication application;
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private Activity activity;
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//下载并显示图片
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public DownloadAndSetImageTask(Mediafile mediafile, ImageView imageView, Activity activity) {
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this.mediafile = mediafile;
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this.imageView = imageView;
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this.activity = activity;
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application = (CommonApplication) activity.getApplicationContext();
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}
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//只下载
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public DownloadAndSetImageTask(Mediafile mediafile, Activity activity) {
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this.mediafile = mediafile;
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application = (CommonApplication) activity.getApplicationContext();
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try {
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this.activity = (Activity) activity;
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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//执行下载任务
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public void execute(){
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if (imageView!=null){
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imageView.setImageResource(R.drawable.icon_add_photo_waite);
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}
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downloadService = application.getRetrofitImage().create(DownloadService.class);
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String url = mediafile.getExtension1()+mediafile.getGuid()+".jpg";
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Call<ResponseBody> downloadImage = downloadService.downloadImage(url);
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downloadImage.enqueue(new Callback<ResponseBody>() {
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@Override
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public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
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if (response.body()!=null){
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File file = writeResponseBodyToDisk(mediafile,response.body());
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if (file!=null&&imageView!=null){
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setImage(file,imageView);
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}
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}else if (response.errorBody()!=null){
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// Toast.makeText(application, "获取图片失败", Toast.LENGTH_SHORT).show();
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Log.e("downloadImage:",response.errorBody().toString());
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}
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}
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@Override
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public void onFailure(Call<ResponseBody> call, Throwable t) {
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Toast.makeText(application, "联网失败", Toast.LENGTH_SHORT).show();
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Log.e("downloadImage:",t.toString());
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}
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});
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}
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//将下载的图片写入磁盘
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public File writeResponseBodyToDisk(Mediafile mediafile, ResponseBody body) {
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if(body==null){
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Toast.makeText(application, "图片源错误", Toast.LENGTH_SHORT).show();
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return null;
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}
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try {
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InputStream is = body.byteStream();
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File file = new File(Environment.getExternalStorageDirectory(),(mediafile.getPath() + mediafile.getDescription()));
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if (file.exists()) {
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file.delete();
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file = new File(Environment.getExternalStorageDirectory(),(mediafile.getPath() + mediafile.getDescription()) );
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}
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file.getParentFile().mkdirs();
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FileOutputStream fos = new FileOutputStream(file);
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BufferedInputStream bis = new BufferedInputStream(is);
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byte[] buffer = new byte[1024];
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int len;
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while ((len = bis.read(buffer)) != -1) {
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fos.write(buffer, 0, len);
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}
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fos.flush();
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fos.close();
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bis.close();
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is.close();
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return file;
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} catch (IOException e) {
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e.printStackTrace();
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return null;
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}
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}
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//显示图像
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private void setImage(File file,ImageView imageView){
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if (file!=null&&imageView!=null){
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SetImageTask task = new SetImageTask(file,imageView, activity);
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task.execute();
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}
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}
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interface DownloadService{
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@GET
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Call<ResponseBody> downloadImage(@Url String fileUrl);
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}
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}
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