深入了解OKHttp（二：使用第三方封装库okhttp-utils）
1_下载并且运行案例
okhttp-utils
2_把okhttp-utils集成到案例中
添加jar 或者
compile project(':okhttputils')
3_使用okhttp-utils请求文本
/**
* 使用okhttp-utils的get请求网络文本数据
*/
public void getDataGetByOkhttpUtils() {
String url = "http://www.zhiyun-tech.com/App/Rider-M/changelog-zh.txt";
// url="http://www.391k.com/api/xapi.ashx/info.json?key=bd_hyrzjjfb4modhj&size=10&page=1";
url = "http://api.m.mtime.cn/PageSubArea/TrailerList.api";
OkHttpUtils
.get()
.url(url)
.id(100)
.build()
.execute(new MyStringCallback());
}
/**
* 使用okhttp-utils的post请求网络文本数据
*/
public void getDataPostByOkhttpUtils() {
String url = "http://www.zhiyun-tech.com/App/Rider-M/changelog-zh.txt";
// url="http://www.391k.com/api/xapi.ashx/info.json?key=bd_hyrzjjfb4modhj&size=10&page=1";
url = "http://api.m.mtime.cn/PageSubArea/TrailerList.api";
OkHttpUtils
.post()
.url(url)
.id(100)
.build()
.execute(new MyStringCallback());
}
public class MyStringCallback extends StringCallback {
@Override
public void onBefore(Request request, int id) {
setTitle("loading...");
}
@Override
public void onAfter(int id) {
setTitle("Sample-okHttp");
}
@Override
public void onError(Call call, Exception e, int id) {
e.printStackTrace();
tv_result.setText("onError:" + e.getMessage());
}
@Override
public void onResponse(String response, int id) {
Log.e(TAG, "onResponse：complete");
tv_result.setText("onResponse:" + response);
switch (id) {
case 100:
Toast.makeText(OKHttpActivity.this, "http", Toast.LENGTH_SHORT).show();
break;
case 101:
Toast.makeText(OKHttpActivity.this, "https", Toast.LENGTH_SHORT).show();
break;
}
}
@Override
public void inProgress(float progress, long total, int id) {
Log.e(TAG, "inProgress:" + progress);
mProgressBar.setProgress((int) (100 * progress));
}
}
4_使用okhttp-utils文件下载
/**
* 使用okhttp-utils下载大文件
*/
public void downloadFile()
{
String url = "http://vfx.mtime.cn/Video/2016/07/24/mp4/160724055620533327_480.mp4";
OkHttpUtils//
.get()//
.url(url)//
.build()//
.execute(new FileCallBack(Environment.getExternalStorageDirectory().getAbsolutePath(), "okhttp-utils-test.mp4")//
{
@Override
public void onBefore(Request request, int id)
{
}
@Override
public void inProgress(float progress, long total, int id)
{
mProgressBar.setProgress((int) (100 * progress));
Log.e(TAG, "inProgress :" + (int) (100 * progress));
}
@Override
public void onError(Call call, Exception e, int id)
{
Log.e(TAG, "onError :" + e.getMessage());
}
@Override
public void onResponse(File file, int id)
{
Log.e(TAG, "onResponse :" + file.getAbsolutePath());
}
});
}
添加权限
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
5_文件上传
/**
* 使用okhttp-utils上传多个或者单个文件
*/
public void multiFileUpload()
{
String mBaseUrl = "http://192.168.0.165:8080/FileUpload/FileUploadServlet";
File file = new File(Environment.getExternalStorageDirectory(), "afu.png");
File file2 = new File(Environment.getExternalStorageDirectory(), "test.txt");
if (!file.exists()||!file2.exists())
{
Toast.makeText(OKHttpActivity.this, "文件不存在，请修改文件路径", Toast.LENGTH_SHORT).show();
return;
}
Map params = new HashMap<>();
params.put("username", "name");
params.put("password", "123");
String url = mBaseUrl ;
OkHttpUtils.post()//
.addFile("mFile", "server_afu.png", file)//
.addFile("mFile", "server_test.txt", file2)//
.url(url)
.params(params)//
.build()//
.execute(new MyStringCallback());
} 6.使用okhttp-utils请求图片
1>请求单张图片
public void getImage()
{
tv_result.setText("");
String url = "http://images.csdn.net/20150817/1.jpg";
OkHttpUtils
.get()//
.url(url)//
.tag(this)//
.build()//
.connTimeOut(20000)
.readTimeOut(20000)
.writeTimeOut(20000)
.execute(new BitmapCallback() {
@Override
public void onError(Call call, Exception e, int id) {
tv_result.setText("onError:" + e.getMessage());
}
@Override
public void onResponse(Bitmap bitmap, int id) {
Log.e("TAG", "onResponse：complete");
iv_icon.setImageBitmap(bitmap);
}
});
}2.在列表请求图片
布局文件
public class OKHttpListActivity extends Activity{
private static final String TAG = OKHttpListActivity.class.getSimpleName();
private ListView listView;
private ProgressBar progressBar;
private TextView tv_nodata;
private OKHttpListAdapter adapter;
private String url;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
initView();
getDataFromNet();
}
private void getDataFromNet() {
url = "http://api.m.mtime.cn/PageSubArea/TrailerList.api";
//得到缓存的数据
String saveJson = CacheUtils.getString(this,url);
if(!TextUtils.isEmpty(saveJson)){
processData(saveJson);
}
OkHttpUtils
.post()
.url(url)
.id(100)
.build()
.execute(new MyStringCallback());
}
private void initView() {
setContentView(R.layout.activity_okhttplist);
tv_nodata = (TextView) findViewById(R.id.tv_nodata);
listView = (ListView) findViewById(R.id.listview);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
}
public class MyStringCallback extends StringCallback {
@Override
public void onBefore(Request request, int id) {
setTitle("loading...");
}
@Override
public void onAfter(int id) {
setTitle("Sample-okHttp");
}
@Override
public void onError(Call call, Exception e, int id) {
e.printStackTrace();
tv_nodata.setVisibility(View.VISIBLE);
}
@Override
public void onResponse(String response, int id) {
Log.e(TAG, "onResponse：complete");
tv_nodata.setVisibility(View.GONE);
switch (id) {
case 100:
Toast.makeText(OKHttpListActivity.this, "http", Toast.LENGTH_SHORT).show();
break;
case 101:
Toast.makeText(OKHttpListActivity.this, "https", Toast.LENGTH_SHORT).show();
break;
}
//解析数据和显示数据
if(response != null){
//缓存数据
CacheUtils.putString(OKHttpListActivity.this,url,response);
processData(response);
}
}
@Override
public void inProgress(float progress, long total, int id) {
Log.e(TAG, "inProgress:" + progress);
}
}
/**
* 解析和显示数据
* @param json
*/
private void processData(String json) {
//解析数据
DataBean dataBean = parsedJson(json);
List datas = dataBean.getTrailers();
if(datas != null && datas.size() >0){
//有数据
tv_nodata.setVisibility(View.GONE);
//显示适配器
adapter = new OKHttpListAdapter(OKHttpListActivity.this,datas);
listView.setAdapter(adapter);
}else{
//没有数据
tv_nodata.setVisibility(View.VISIBLE);
}
progressBar.setVisibility(View.GONE);
}
/**
* 解析json数据
*
* @param response
* @return
*/
private DataBean parsedJson(String response) {
DataBean dataBean = new DataBean();
try {
JSONObject jsonObject = new JSONObject(response);
JSONArray jsonArray = jsonObject.optJSONArray("trailers");
if (jsonArray != null && jsonArray.length() > 0) {
List trailers = new ArrayList<>();
dataBean.setTrailers(trailers);
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObjectItem = (JSONObject) jsonArray.get(i);
if (jsonObjectItem != null) {
DataBean.ItemData mediaItem = new DataBean.ItemData();
String movieName = jsonObjectItem.optString("movieName");//name
mediaItem.setMovieName(movieName);
String videoTitle = jsonObjectItem.optString("videoTitle");//desc
mediaItem.setVideoTitle(videoTitle);
String imageUrl = jsonObjectItem.optString("coverImg");//imageUrl
mediaItem.setCoverImg(imageUrl);
String hightUrl = jsonObjectItem.optString("hightUrl");//data
mediaItem.setHightUrl(hightUrl);
//把数据添加到集合
trailers.add(mediaItem);
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
return dataBean;
}
}
public class OKHttpListAdapter extends BaseAdapter {
private final Context context;
private final List datas;
public OKHttpListAdapter(Context context,List datas){
this.context = context;
this.datas = datas;
}
@Override
public int getCount() {
return datas.size();
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
final ViewHolder viewHolder;
if(convertView ==null){
convertView = View.inflate(context, R.layout.item_okhttp_list_image,null);
viewHolder = new ViewHolder();
viewHolder.iv_icon = (ImageView) convertView.findViewById(R.id.iv_icon);
viewHolder.tv_name = (TextView) convertView.findViewById(R.id.tv_name);
viewHolder.tv_desc = (TextView) convertView.findViewById(R.id.tv_desc);
convertView.setTag(viewHolder);
}else{
viewHolder = (ViewHolder) convertView.getTag();
}
//根据位置得到数据
DataBean.ItemData itemData = datas.get(position);
viewHolder.tv_name.setText(itemData.getMovieName());
viewHolder.tv_desc.setText(itemData.getVideoTitle());
//在列表中使用okhttp-utils请求图片
OkHttpUtils
.get()//
.url(itemData.getCoverImg())//
.tag(this)//
.build()//
.connTimeOut(20000)
.readTimeOut(20000)
.writeTimeOut(20000)
.execute(new BitmapCallback() {
@Override
public void onError(Call call, Exception e, int id) {
// tv_result.setText("onError:" + e.getMessage());
}
@Override
public void onResponse(Bitmap bitmap, int id) {
Log.e("TAG", "onResponse：complete");
viewHolder.iv_icon.setImageBitmap(bitmap);
}
});
return convertView;
}
static class ViewHolder{
ImageView iv_icon;
TextView tv_name;
TextView tv_desc;
}
}