package com.example.lvxinxin.androidzxdayone;

import android.annotation.SuppressLint;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

/**

• 今天的內容很重要

• 1：JSON解析

• 2：Handler Looper MessageQueue Message

• HTTPURLConnection+URL（獲取網址裡面的資料）

• 1：有網路就得加許可權 android.permission.INTERNET

• 2：我們自己分析程式碼應該怎麼寫？

• 1：有效網址 http://api.expoon.com/AppNews/getNewsList/type/1/p/1

• 2：
  */
  public class MainActivity extends AppCompatActivity implements View.OnClickListener {
  private String mUrl = “

  http://api.expoon.com/AppNews/getNewsList/type/1/p/1”;
  private String mImageUrl = “http://img.my.csdn.net/uploads/201407/26/1406383265_8550.jpg”;
  private String mPostUrl = “http://tcc.taobao.com/cc/json/mobile_tel_segment.htm”;
  private Button mSendBtn,mSendImage,mPostBtn;
  private TextView mGetText;
  private ImageView mImage;
  @SuppressLint(“HandlerLeak”)
  private Handler mHandler = new Handler() {
  @Override
  public void handleMessage(Message msg) {
  int what = msg.what;
  switch (what) {
  case 1:
  String string = msg.obj.toString();
  mGetText.setText(string);
  break;
  case 2:
  Bitmap bt = (Bitmap) msg.obj;
  mImage.setImageBitmap(bt);
  break;
  case 3:
  String string1 = msg.obj.toString();
  mGetText.setText(string1);
  break;
  }
  }
  };

  @Override
  protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  initViews();
  }

  //初始化元件
  private void initViews() {
  mSendBtn = findViewById(R.id.Send_Btn);
  mSendBtn.setOnClickListener(this);
  mGetText = findViewById(R.id.Get_Text);
  mSendImage = findViewById(R.id.Send_Image_Btn);
  mSendImage.setOnClickListener(this);
  mImage = findViewById(R.id.Get_Image);
  mPostBtn = findViewById(R.id.Send_Post_Btn);
  mPostBtn.setOnClickListener(this);
  }

  private void getNetData() {
  new Thread(new Runnable() {
  @Override
  public void run() {
  try {
  //定位一個網址服務
  URL url = new URL(mUrl);
  //由一個有效的網址服務返回這個物件
  HttpURLConnection connection = (HttpURLConnection) url.openConnection();
  //設定請求方式
  connection.setRequestMethod(“GET”);
  connection.setConnectTimeout(5000);
  InputStream stream = connection.getInputStream();
  String inputStr = getInputStr(stream);
  Message msg = new Message();
  //這個what是標記的意思 Handler物件只能有一個 Message是有多個的
  msg.what = 1;
  msg.obj = inputStr;
  mHandler.sendMessage(msg);
  Log.e(“網路字串”, inputStr);
  } catch (Exception e) {
  e.printStackTrace();
  }
  }
  }).start();

  }

  //把流轉成字串
  private String getInputStr(InputStream stream) throws IOException {
  BufferedReader br = new BufferedReader(new InputStreamReader(stream));
  StringBuffer sb = new StringBuffer();
  String str = null;
  while ((str = br.readLine()) != null) {
  sb.append(str);
  }
  return sb.toString();
  }

  private void getImageData(){
  new Thread(new Runnable() {
  @Override
  public void run() {
  try {
  URL url = new URL(mImageUrl);
  HttpURLConnection connection = (HttpURLConnection) url.openConnection();
  if (connection.getResponseCode() ==200){
  InputStream stream = connection.getInputStream();
  Bitmap bitmap = BitmapFactory.decodeStream(stream);
  Message msg = new Message();
  msg.what = 2;
  msg.obj = bitmap;
  mHandler.sendMessage(msg);
  }

           } catch (Exception e) {
               e.printStackTrace();
           }
       }
   }).start();
  

  }

  @Override
  public void onClick(View v) {
  switch (v.getId()) {
  case R.id.Send_Btn:
  getNetData();
  break;
  case R.id.Send_Image_Btn:
  getImageData();
  break;
  case R.id.Send_Post_Btn:
  getPostData();
  break;
  }
  }
  //Post請求方式
  private void getPostData(){
  new Thread(new Runnable() {
  @Override
  public void run() {
  try {
  URL url = new URL(mPostUrl);
  HttpURLConnection connection = (HttpURLConnection) url.openConnection();
  connection.setRequestMethod(“POST”);
  //開啟可以想外輸出的許可權
  connection.setDoOutput(true);
  OutputStream outputStream = connection.getOutputStream();
  String canshu = “tel=15850781443”;
  //把字串轉換成位元組
  outputStream.write(canshu.getBytes());
  if (connection.getResponseCode() ==200){
  InputStream stream = connection.getInputStream();
  String inputStr = getInputStr(stream);
  Message msg = new Message();
  //這個what是標記的意思 Handler物件只能有一個 Message是有多個的
  msg.what = 3;
  msg.obj = inputStr;
  mHandler.sendMessage(msg);
  }

           } catch (Exception e) {
               e.printStackTrace();
           }
       }
   }).start();
  

  }

}