写的例子比较简单，是用xutils3.0来进行下载项目更新
1.先通过网络请求，判断版本是否要更新
2.若要更新，则弹出一个弹窗，我用的是系统自带的Dialog，将下载的版本号及下载的内容提示展示出来
3.当用户点击下载时，开始下载，下载时展示一个水平的进度条
4.下载完成后，进度条消失，调用系统安装apk
如下是代码 用到的xutils的jar包是3.3.32版本的
1 package com.item.weixin;
2
3 import java.io.File;
4
5 import org.json.JSONException;
6 import org.json.JSONObject;
7 import org.xutils.x;
8 import org.xutils.common.Callback;
9 import org.xutils.http.RequestParams;
10
11 import android.annotation.SuppressLint;
12 import android.app.Activity;
13 import android.app.AlertDialog;
14 import android.app.ProgressDialog;
15 import android.content.Context;
16 import android.content.DialogInterface;
17 import android.content.Intent;
18 import android.content.pm.PackageInfo;
19 import android.content.pm.PackageManager.NameNotFoundException;
20 import android.net.Uri;
21 import android.os.Bundle;
22 import android.os.Environment;
23 import android.view.View;
24 import android.view.Window;
25 import android.widget.Button;
26
27 /**
28 * 设置xutils下载
29 *
30 * @author Administrator
31 *
32 */
33 public class LoginActivity extends Activity {
34 private Button ll_update;
35 private ProgressDialog pDialog;
36 private String nowVersion;
37 private ProgressDialog progressDialog;
38
39 @Override
40 protected void onCreate(Bundle savedInstanceState) {
41 // TODO Auto-generated method stub
42 super.onCreate(savedInstanceState);
43 requestWindowFeature(Window.FEATURE_NO_TITLE);
44 setContentView(R.layout.activity_login);
45 ll_update = (Button) findViewById(R.id.btn_login);
46 ll_update.setOnClickListener(new View.OnClickListener() {
47
48 @Override
49 public void onClick(View arg0) {
50 // TODO Auto-generated method stub
51 checkUpdate();
52 }
53 });
54 try {
55 PackageInfo packageInfo = getPackageManager().getPackageInfo(
56 getPackageName(), 0);
57 nowVersion = packageInfo.versionName;
58 } catch (NameNotFoundException e) {
59 // TODO Auto-generated catch block
60 e.printStackTrace();
61 }
62 }
63
64 /**
65 * 下载更新,
66 */
67 protected void checkUpdate() {
68 // TODO Auto-generated method stub
69 proDialogShow(LoginActivity.this, "正在查询...");
70 RequestParams params = new RequestParams("url");
71 x.http().get(params, new Callback.CommonCallback<String>() {
72
73 @Override
74 public void onCancelled(CancelledException arg0) {
75 // TODO Auto-generated method stub
76
77 }
78
79 @Override
80 public void onError(Throwable arg0, boolean arg1) {
81 // TODO Auto-generated method stub
82 PDialogHide();
83 System.out.println("提示网络错误");
84 }
85
86 @Override
87 public void onFinished() {
88 // TODO Auto-generated method stub
89
90 }
91
92 @Override
93 public void onSuccess(String arg0) {
94 // TODO Auto-generated method stub
95 PDialogHide();
96 try {
97 JSONObject object = new JSONObject(arg0);
98 boolean success = object.getBoolean("succee");
99 if (success) {
100 String desc = object.getString("desc");
101 String downloadurl = object.getString("downloadurl");
102 String versionname = object.getString("versionname");
103 if (nowVersion.equals(versionname)) {
104 System.out.println("当前版本为最新，不用跟新");
105 } else {
106 // 不同，弹出更新提示对话框
107 setUpDialog(versionname, downloadurl, desc);
108 }
109 }
110 } catch (JSONException e) {
111 // TODO Auto-generated catch block
112 e.printStackTrace();
113 }
114 }
115 });
116 }
117
118 /**
119 *
120 * @param versionname
121 * 地址中版本的名字
122 * @param downloadurl
123 * 下载包的地址
124 * @param desc
125 * 版本的描述
126 */
127 protected void setUpDialog(String versionname, final String downloadurl,
128 String desc) {
129 // TODO Auto-generated method stub
130 AlertDialog dialog = new AlertDialog.Builder(this).setCancelable(false)
131 .setTitle("下载" + versionname + "版本").setMessage(desc)
132 .setNegativeButton("取消", null)
133 .setPositiveButton("下载", new DialogInterface.OnClickListener() {
134
135 @Override
136 public void onClick(DialogInterface arg0, int arg1) {
137 // TODO Auto-generated method stub
138 setDownLoad(downloadurl);
139 }
140 }).create();
141 dialog.show();
142 }
143
144 /**
145 * 下载包
146 *
147 * @param downloadurl
148 * 下载的url
149 *
150 */
151 @SuppressLint("SdCardPath")
152 protected void setDownLoad(String downloadurl) {
153 // TODO Auto-generated method stub
154 RequestParams params = new RequestParams(downloadurl);
155 params.setAutoRename(true);//断点下载
156 params.setSaveFilePath("/mnt/sdcard/demo.apk");
157 x.http().get(params, new Callback.ProgressCallback<File>() {
158
159 @Override
160 public void onCancelled(CancelledException arg0) {
161 // TODO Auto-generated method stub
162
163 }
164
165 @Override
166 public void onError(Throwable arg0, boolean arg1) {
167 // TODO Auto-generated method stub
168 if(progressDialog!=null && progressDialog.isShowing()){
169 progressDialog.dismiss();
170 }
171 System.out.println("提示更新失败");
172 }
173
174 @Override
175 public void onFinished() {
176 // TODO Auto-generated method stub
177
178 }
179
180 @Override
181 public void onSuccess(File arg0) {
182 // TODO Auto-generated method stub
183 if(progressDialog!=null && progressDialog.isShowing()){
184 progressDialog.dismiss();
185 }
186 Intent intent = new Intent(Intent.ACTION_VIEW);
187 intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
188 intent.setDataAndType(Uri.fromFile(new File(Environment
189 .getExternalStorageDirectory(), "demo.apk")),
190 "application/vnd.android.package-archive");
191 startActivity(intent);
192 }
193
194 @Override
195 public void onLoading(long arg0, long arg1, boolean arg2) {
196 // TODO Auto-generated method stub
197 progressDialog.setMax((int)arg0);
198 progressDialog.setProgress((int)arg1);
199 }
200
201 @Override
202 public void onStarted() {
203 // TODO Auto-generated method stub
204 System.out.println("开始下载");
205 progressDialog = new ProgressDialog(LoginActivity.this);
206 progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);//设置为水平进行条
207 progressDialog.setMessage("正在下载中...");
208 progressDialog.setProgress(0);
209 progressDialog.show();
210 }
211
212 @Override
213 public void onWaiting() {
214 // TODO Auto-generated method stub
215
216 }
217 });
218 }
219
220 private void proDialogShow(Context context, String msg) {
221 pDialog = new ProgressDialog(context);
222 pDialog.setMessage(msg);
223 // pDialog.setCancelable(false);
224 pDialog.show();
225 }
226
227 private void PDialogHide() {
228 try {
229 if (pDialog != null && pDialog.isShowing()) {
230 pDialog.dismiss();
231 }
232 } catch (Exception e) {
233 e.printStackTrace();
234 }
235 }
236 }
时间： 2024-10-14 14:05:30