用xutils3.0进行下载项目更新

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;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.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() {@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stubcheckUpdate();}});try {PackageInfo packageInfo = getPackageManager().getPackageInfo(getPackageName(), 0);nowVersion = packageInfo.versionName;} catch (NameNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();}}/*** 下载更新,*/protected void checkUpdate() {// TODO Auto-generated method stubproDialogShow(LoginActivity.this, "正在查询...");RequestParams params = new RequestParams("url");x.http().get(params, new Callback.CommonCallback<String>() {@Overridepublic void onCancelled(CancelledException arg0) {// TODO Auto-generated method stub}@Overridepublic void onError(Throwable arg0, boolean arg1) {// TODO Auto-generated method stubPDialogHide();System.out.println("提示网络错误");}@Overridepublic void onFinished() {// TODO Auto-generated method stub}@Overridepublic void onSuccess(String arg0) {// TODO Auto-generated method stubPDialogHide();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 blocke.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 stubAlertDialog 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() {@Overridepublic void onClick(DialogInterface arg0, int arg1) {// TODO Auto-generated method stubsetDownLoad(downloadurl);}}).create();dialog.show();}/*** 下载包* * @param downloadurl* 下载的url* */@SuppressLint("SdCardPath")protected void setDownLoad(String downloadurl) {// TODO Auto-generated method stubRequestParams 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>() {@Overridepublic void onCancelled(CancelledException arg0) {// TODO Auto-generated method stub}@Overridepublic void onError(Throwable arg0, boolean arg1) {// TODO Auto-generated method stubif(progressDialog!=null && progressDialog.isShowing()){progressDialog.dismiss();}System.out.println("提示更新失败");}@Overridepublic void onFinished() {// TODO Auto-generated method stub}@Overridepublic void onSuccess(File arg0) {// TODO Auto-generated method stubif(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);}@Overridepublic void onLoading(long arg0, long arg1, boolean arg2) {// TODO Auto-generated method stubprogressDialog.setMax((int)arg0);progressDialog.setProgress((int)arg1);}@Overridepublic void onStarted() {// TODO Auto-generated method stubSystem.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();}@Overridepublic 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();}}}