package com.item.weixin;

 import java.io.File;

 import org.json.JSONException;

 import org.json.JSONObject;

 import org.xutils.x;

 import org.xutils.common.Callback;

 import org.xutils.http.RequestParams;

 import android.annotation.SuppressLint;

 import android.app.Activity;

 import android.app.AlertDialog;

 import android.app.ProgressDialog;

 import android.content.Context;

 import android.content.DialogInterface;

 import android.content.Intent;

 import android.content.pm.PackageInfo;

 import android.content.pm.PackageManager.NameNotFoundException;

 import android.net.Uri;

 import android.os.Bundle;

 import android.os.Environment;

 import android.view.View;

 import android.view.Window;

 import android.widget.Button;

 /**

  * 设置xutils下载

  *

  * @author Administrator

  *

  */

 public class LoginActivity extends Activity {

     private Button ll_update;

     private ProgressDialog pDialog;

     private String nowVersion;

     private ProgressDialog progressDialog;

     @Override

     protected void onCreate(Bundle savedInstanceState) {

         // TODO Auto-generated method stub

         super.onCreate(savedInstanceState);

         requestWindowFeature(Window.FEATURE_NO_TITLE);

         setContentView(R.layout.activity_login);

         ll_update = (Button) findViewById(R.id.btn_login);

         ll_update.setOnClickListener(new View.OnClickListener() {

             @Override

             public void onClick(View arg0) {

                 // TODO Auto-generated method stub

                 checkUpdate();

             }

         });

         try {

             PackageInfo packageInfo = getPackageManager().getPackageInfo(

                     getPackageName(), 0);

             nowVersion = packageInfo.versionName;

         } catch (NameNotFoundException e) {

             // TODO Auto-generated catch block

             e.printStackTrace();

         }

     }

     /**

      * 下载更新,

      */

     protected void checkUpdate() {

         // TODO Auto-generated method stub

         proDialogShow(LoginActivity.this, "正在查询...");

         RequestParams params = new RequestParams("url");

         x.http().get(params, new Callback.CommonCallback<String>() {

             @Override

             public void onCancelled(CancelledException arg0) {

                 // TODO Auto-generated method stub

             }

             @Override

             public void onError(Throwable arg0, boolean arg1) {

                 // TODO Auto-generated method stub

                 PDialogHide();

                 System.out.println("提示网络错误");

             }

             @Override

             public void onFinished() {

                 // TODO Auto-generated method stub

             }

             @Override

             public void onSuccess(String arg0) {

                 // TODO Auto-generated method stub

                 PDialogHide();

                 try {

                     JSONObject object = new JSONObject(arg0);

                     boolean success = object.getBoolean("succee");

                     if (success) {

                         String desc = object.getString("desc");

                         String downloadurl = object.getString("downloadurl");

                         String versionname = object.getString("versionname");

                         if (nowVersion.equals(versionname)) {

                             System.out.println("当前版本为最新，不用跟新");

                         } else {

                             // 不同，弹出更新提示对话框

                             setUpDialog(versionname, downloadurl, desc);

                         }

                     }

                 } catch (JSONException e) {

                     // TODO Auto-generated catch block

                     e.printStackTrace();

                 }

             }

         });

     }

     /**

      *

      * @param versionname

      *            地址中版本的名字

      * @param downloadurl

      *            下载包的地址

      * @param desc

      *            版本的描述

      */

     protected void setUpDialog(String versionname, final String downloadurl,

             String desc) {

         // TODO Auto-generated method stub

         AlertDialog dialog = new AlertDialog.Builder(this).setCancelable(false)

                 .setTitle("下载" + versionname + "版本").setMessage(desc)

                 .setNegativeButton("取消", null)

                 .setPositiveButton("下载", new DialogInterface.OnClickListener() {

                     @Override

                     public void onClick(DialogInterface arg0, int arg1) {

                         // TODO Auto-generated method stub

                         setDownLoad(downloadurl);

                     }

                 }).create();

         dialog.show();

     }

     /**

      * 下载包

      *

      * @param downloadurl

      *            下载的url

      *

      */

     @SuppressLint("SdCardPath")

     protected void setDownLoad(String downloadurl) {

         // TODO Auto-generated method stub

         RequestParams params = new RequestParams(downloadurl);

         params.setAutoRename(true);//断点下载

         params.setSaveFilePath("/mnt/sdcard/demo.apk");

         x.http().get(params, new Callback.ProgressCallback<File>() {

             @Override

             public void onCancelled(CancelledException arg0) {

                 // TODO Auto-generated method stub

             }

             @Override

             public void onError(Throwable arg0, boolean arg1) {

                 // TODO Auto-generated method stub

                 if(progressDialog!=null && progressDialog.isShowing()){

                     progressDialog.dismiss();

                 }

                 System.out.println("提示更新失败");

             }

             @Override

             public void onFinished() {

                 // TODO Auto-generated method stub

             }

             @Override

             public void onSuccess(File arg0) {

                 // TODO Auto-generated method stub

                 if(progressDialog!=null && progressDialog.isShowing()){

                     progressDialog.dismiss();

                 }

                 Intent intent = new Intent(Intent.ACTION_VIEW);

                 intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

                 intent.setDataAndType(Uri.fromFile(new File(Environment

                         .getExternalStorageDirectory(), "demo.apk")),

                         "application/vnd.android.package-archive");

                 startActivity(intent);

             }

             @Override

             public void onLoading(long arg0, long arg1, boolean arg2) {

                 // TODO Auto-generated method stub

                 progressDialog.setMax((int)arg0);

                 progressDialog.setProgress((int)arg1);

             }

             @Override

             public void onStarted() {

                 // TODO Auto-generated method stub

                 System.out.println("开始下载");

                 progressDialog = new ProgressDialog(LoginActivity.this);

                 progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);//设置为水平进行条

                 progressDialog.setMessage("正在下载中...");

                 progressDialog.setProgress(0);

                 progressDialog.show();

             }

             @Override

             public void onWaiting() {

                 // TODO Auto-generated method stub

             }

         });

     }

     private void proDialogShow(Context context, String msg) {

         pDialog = new ProgressDialog(context);

         pDialog.setMessage(msg);

         // pDialog.setCancelable(false);

         pDialog.show();

     }

     private void PDialogHide() {

         try {

             if (pDialog != null && pDialog.isShowing()) {

                 pDialog.dismiss();

             }

         } catch (Exception e) {

             e.printStackTrace();

         }

     }

 }