httpClient

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SSLConnectionSocketFactory sslFactory = new SSLConnectionSocketFactory(sslContext,SSLConnectionSocktFactory.ALLOW_ALL_HOSTNAME_VERIFIER);证书不匹配

使用httpClient获取数据...点击事件 useLibrary 'org.apache.http.legacy' useLibrary 'org.apache.http.legacy'

package news1510a.bawei.com.a04_zhou_test;

import android.content.Intent;

import android.os.AsyncTask;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ListView;

import com.google.gson.Gson;

import org.apache.http.HttpResponse;

import org.apache.http.client.HttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.conn.ssl.AllowAllHostnameVerifier;

import org.apache.http.conn.ssl.SSLSocketFactory;

import org.apache.http.impl.client.DefaultHttpClient;

import java.io.BufferedReader;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.net.HttpURLConnection;

import java.net.URL;

import java.util.List;

/**

* 去掉标题在这里写requestWindownFeatrue不管用

* 使用theme主题去去除标题

public class MainActivity extends AppCompatActivity {

private ListView listView;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

listView = (ListView) findViewById(R.id.list_view);

}

/**

* 使用httpClient获取数据...点击事件

* 一般情况下httpClient是没有问题的,,,但是对于一些路径可能会出现问题

* javax.net.ssl.SSLException: hostname in certificate didn't match: <api.tianapi.com> != <*.sinaapp.com> OR <*.sinaapp.com> OR <sinaapp.com>

* 解决办法:http://blog.csdn.net/ITermeng/article/details/52937158?locationNum=1&fps=1

* @param view

public void getDataByClient(View view){

//第一个是参数的意思,,,一般是url地址,,Void,,,第二个是异步任务执行的进度,,Void,,第三个是结果泛型,,,String

AsyncTask<Void, Void, String> asyncTask = new AsyncTask<Void, Void, String>() {

//运行在后台...类似子线程,,,做耗时的操作(访问网络的操作)

@Override

protected String doInBackground(Void... voids) {

try {

/**

* httpClient已经过时了,在使用的时候需要在build,grandle下面加一行代码,去支持httpClient

SSLSocketFactory.getSocketFactory().setHostnameVerifier(new AllowAllHostnameVerifier());

String path = "https://api.tianapi.com/wxnew/?key=8d6e3228d25298f13af4fc40ce6c9679&num=10";

//1.创建一个客户端对象

HttpClient client = new DefaultHttpClient();

//2.创建一个请求的对象...请求的对象可以是get也可以是post

HttpGet httpGet = new HttpGet(path);

//3.客户端对象执行get请求....返回值是一个响应的对象

HttpResponse httpResponse = client.execute(httpGet);

//获取状态码

int statusCode = httpResponse.getStatusLine().getStatusCode();

if (statusCode == 200) {

//获取响应的实体内容...字节流...先获取实体内容的对象...在获取内容

InputStream inputStream = httpResponse.getEntity().getContent();

String json = streamToString(inputStream, "utf-8");

//返回

return json;

}

} catch (Exception e) {

e.printStackTrace();

}

return null;

}

//接收到doInBackground发送回来的数据....处于主线程,,,更新界面的操作写在这里

@Override

protected void onPostExecute(String s) {//s就是doInBackground返回的json数据

//在这里接收到doInBackground返回的json数据,,,解析设置适配器

Gson gson = new Gson();

DataDataBean dataDataBean = gson.fromJson(s, DataDataBean.class);

final List<DataDataBean.NewslistBean> newslist = dataDataBean.getNewslist();

//设置适配器

MyAdapter myAdapter = new MyAdapter(newslist, MainActivity.this);

listView.setAdapter(myAdapter);

/**

* 条目的点击事件

listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

@Override

public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {

Intent intent = new Intent(MainActivity.this,DetailActivity.class);

intent.putExtra("url",newslist.get(i).getUrl());

startActivity(intent);

}

});

}

};

/**

* 异步任务要执行,,,需要手动的去调用excute方法

asyncTask.execute();

}

/**

* 使用httpUrlConnection获取...点击事件

* @param view

public void getDataByConnection(View view){

AsyncTask<Void, Void, String> asyncTask = new AsyncTask<Void, Void, String>() {

@Override

protected String doInBackground(Void... voids) {

String path = "https://api.tianapi.com/wxnew/?key=8d6e3228d25298f13af4fc40ce6c9679&num=10";

try {

URL url = new URL(path);

HttpURLConnection connection = (HttpURLConnection) url.openConnection();

//设置

connection.setRequestMethod("GET");

connection.setReadTimeout(5000);

connection.setConnectTimeout(5000);

//获取

int responseCode = connection.getResponseCode();

if (responseCode == 200){

InputStream inputStream = connection.getInputStream();

String json = streamToString(inputStream, "utf-8");

//返回

return json;

}

} catch (Exception e) {

e.printStackTrace();

}

return null;

}

@Override

protected void onPostExecute(String s) {

//在这里接收到doInBackground返回的json数据,,,解析设置适配器

Gson gson = new Gson();

DataDataBean dataDataBean = gson.fromJson(s, DataDataBean.class);

List<DataDataBean.NewslistBean> newslist = dataDataBean.getNewslist();

//设置适配器

MyAdapter myAdapter = new MyAdapter(newslist, MainActivity.this);

listView.setAdapter(myAdapter);

}

};

//执行

asyncTask.execute();

}

/**

* 把一个字节流转换为字符串的方法

* @param inputStream

* @param charset

* @return

private String streamToString(InputStream inputStream,String charset) {

try {

InputStreamReader inputStreamReader = new InputStreamReader(inputStream,charset);

BufferedReader bufferedReader = new BufferedReader(inputStreamReader);

String s = null;

StringBuilder builder = new StringBuilder();

while ((s = bufferedReader.readLine()) != null){

builder.append(s);

}

bufferedReader.close();

return builder.toString();

} catch (Exception e) {

e.printStackTrace();

}

return null;

}

package news1510a.bawei.com.a04_zhou_test;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.webkit.WebSettings;

import android.webkit.WebView;

import android.webkit.WebViewClient;

public class DetailActivity extends AppCompatActivity {

private WebView webView;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_detail);

//先获取传递的路径

String url = getIntent().getStringExtra("url");

//展示到webView上

webView = (WebView) findViewById(R.id.web_view);

webView.loadUrl(url);

//设置

//在当前的activity加载,,,而不是浏览器去加载

webView.setWebViewClient(new WebViewClient());

//webView.setWebChromeClient();//这个是js与android原生app进行交互的时候可以使用

WebSettings settings = webView.getSettings();

settings.setJavaScriptEnabled(true);

//设置支持js自动弹窗

settings.setJavaScriptCanOpenWindowsAutomatically(true);

}

package news1510a.bawei.com.a04_zhou_test;

import android.content.Context;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.os.AsyncTask;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.ImageView;

import android.widget.TextView;

import java.io.InputStream;

import java.net.HttpURLConnection;

import java.net.URL;

import java.util.List;

/**

* @author Dash

* @date 2017/10/8

* @description:

public class MyAdapter extends BaseAdapter {

List<DataDataBean.NewslistBean> list;

Context context;

public MyAdapter(List<DataDataBean.NewslistBean> list, Context context) {

this.list = list;

this.context = context;

}

@Override

public int getCount() {

return list.size();

}

@Override

public Object getItem(int i) {

return list.get(i);

}

@Override

public long getItemId(int i) {

return i;

}

@Override

public View getView(int i, View view, ViewGroup viewGroup) {

ViewHolder holder;

if (view == null){

view = View.inflate(context,R.layout.item_layou,null);

holder = new ViewHolder();

holder.imageView = view.findViewById(R.id.image_view);

holder.text_time = view.findViewById(R.id.text_time);

holder.text_title = view.findViewById(R.id.text_title);

view.setTag(holder);

}else {

holder = (ViewHolder) view.getTag();

}

//赋值

holder.text_title.setText(list.get(i).getTitle());

holder.text_time.setText(list.get(i).getCtime());

//显示图片....

dispalyImage(list.get(i).getPicUrl(),holder.imageView);

return view;

}

private void dispalyImage(final String picUrl, final ImageView imageView) {

AsyncTask<Void, Void, Bitmap> asyncTask = new AsyncTask<Void, Void, Bitmap>() {

@Override

protected Bitmap doInBackground(Void... voids) {

try {

URL url = new URL(picUrl);

HttpURLConnection connection = (HttpURLConnection) url.openConnection();

//设置

connection.setRequestMethod("GET");

connection.setReadTimeout(5000);

connection.setConnectTimeout(5000);

//获取

int responseCode = connection.getResponseCode();

if (responseCode == 200){

InputStream inputStream = connection.getInputStream();

//转成bitmap

Bitmap bitmap = BitmapFactory.decodeStream(inputStream);

return bitmap;

}

} catch (Exception e) {

e.printStackTrace();

}

return null;

}

@Override

protected void onPostExecute(Bitmap bitmap) {

//设置

imageView.setImageBitmap(bitmap);

}

};

asyncTask.execute();

}

private class ViewHolder{

ImageView imageView;

TextView text_title;

TextView text_time;

}

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