首先，在manifest.xml配置文件中，会有当前安卓软件的版本号。
1 <manifest xmlns:android="http://schemas.android.com/apk/res/android" 2 package="com.cn.gordon.exhibition.walk.activity" 3 android:versionCode="1" 4 android:versionName="1.0.1" >
简单的思路就是把自己的版本号通过参数，传递给后台，由后台来判断是否要检测更新。（这里是把后台中最新的版本获取到，和本地的做对比。）
通过方法来获取本地的版本号：
1 public static String getVersionName(Context context) {
2 String verName = "";
3 try {
4 verName = context.getPackageManager().getPackageInfo(PACKAGE_NAME,
5 0).versionName;
6 } catch (NameNotFoundException e) {
7 e.printStackTrace();
8 }
9 return verName;
10 }
获取网络的版本号：
1 protected void getVersionFromNet(final View view) {
2 Map<String, String> postvalues = new HashMap<String, String>();
3 postvalues.put("", "");
4
5 new NetUtils(new NetCallBack(){
6 @Override
7 public void getNet(NetCallBack_State arg0, String arg1) {
8 switch (arg0) {
9 case error:
10 Toast.makeText(getActivity(), "网络资源错误", Toast.LENGTH_SHORT).show();
11 break;
12 case noNet:
13 Toast.makeText(getActivity(), "网络未开启", Toast.LENGTH_SHORT).show();
14 break;
15 case wrong:
16 Toast.makeText(getActivity(), "网络数据错误"+arg1, Toast.LENGTH_SHORT).show();
17 break;
18 case ok:
19 processUpdate(view,arg1);
20 break;
21 default:
22 break;
23 }
24 }
25 }).read(getActivity(), false, Utils.GETAPKVERSIONCODE_URL, null, null, false, postvalues, "GBK", true, true);
26
27 }
返回的json在arg1中，解析json：
1 protected void processUpdate(View view ,String arg1) {
2 try {
3 JSONObject jo = new JSONObject(arg1);
4 if (jo.optString("version").equals(Utils.getVersionName(getActivity()))) {
5 Toast.makeText(getActivity(), "当前软件已经是最新版本~", Toast.LENGTH_SHORT).show();
6 }else {
7 String apkUrl = Utils.PICIP + "/iot-hmi-web/iot/" + jo.optString("url").replace("\\", "/");
8 System.out.println("apkUrl = "+apkUrl);
9 String apkName = jo.optString("name");
10 String versionName = jo.optString("version");
11
12 global.setApkName(apkName);
13 global.setApkUrl(apkUrl);
14 PromptDialogPopupWindow pDialog = new PromptDialogPopupWindow(getActivity(), 4, "LoginActivity", 检测到新版本，\r\n最新版本：V"+versionName+"\r\n当前版本：V"+Utils.getVersionName(getActivity())+"\r\n是否现在更新？");
15 pDialog.showPopupWindow(view);
16 }
17 } catch (JSONException e) {
18 e.printStackTrace();
19 return;
20 }
21
22
23 }
解析完成后，弹出一个popupwindow来提示用户是否真的要更新？
1 package com.cn.gordon.exhibition.walk.popup;
2
3 import com.cn.gordon.exhibition.walk.activity.CreateBusinesscardActivity;
4 import com.cn.gordon.exhibition.walk.activity.DownApkActivity;
5 import com.cn.gordon.exhibition.walk.activity.LoginActivity;
6 import com.cn.gordon.exhibition.walk.activity.R;
7 import com.cn.gordon.exhibition.walk.application.GlobalVaries;
8 import android.annotation.TargetApi;
9 import android.app.Activity;
10 import android.bluetooth.BluetoothAdapter;
11 import android.bluetooth.BluetoothManager;
12 import android.content.Context;
13 import android.content.Intent;
14 import android.graphics.drawable.BitmapDrawable;
15 import android.os.Bundle;
16 import android.view.Gravity;
17 import android.view.LayoutInflater;
18 import android.view.View;
19 import android.view.View.OnClickListener;
20 import android.widget.Button;
21 import android.widget.PopupWindow;
22 import android.widget.RelativeLayout.LayoutParams;
23 import android.widget.TextView;
24
25 public class PromptDialogPopupWindow {
26 private Activity context;
27 private Button btnOK,btnCancel;
28 private TextView txtContent;
29 private PopupWindow popWindow ;
30 private GlobalVaries global;
31 private String promptContent,activityName;
32 private int goingFlag;//1:登录2:完善信息
33 private int okCancel = 0;//init-->0,ok-->1,cancel-->2
34
35
36
37 public PromptDialogPopupWindow(Activity context,int goingFlag,String activityName,String promptContent){
38 this.context = context;
39 this.promptContent = promptContent;
40 this.activityName = activityName;
41 this.goingFlag = goingFlag;
42 init();
43 }
44 @SuppressWarnings("deprecation")
45 private void init() {
46
47 global = (GlobalVaries) context.getApplication();
48
49 LayoutInflater inflater = LayoutInflater.from(context);
50 // 引入窗口配置文件
51 View viewPop = inflater.inflate(R.layout.popup_promptdialog, null);
52 txtContent = (TextView)viewPop.findViewById(R.id.promptcontent);
53 btnOK = (Button)viewPop.findViewById(R.id.btn_ok);
54 btnCancel = (Button)viewPop.findViewById(R.id.btn_cancel);
55 // 创建PopupWindow对象
56 popWindow = new PopupWindow(viewPop, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, false);
57 // 需要设置一下此参数，点击外边可消失
58 popWindow.setBackgroundDrawable(new BitmapDrawable());
59 //设置点击窗口外边窗口消失
60 popWindow.setOutsideTouchable(false);
61 // 设置此参数获得焦点，否则无法点击
62 popWindow.setFocusable(false);
63
64 txtContent.setText(promptContent);
65 popWindow.update();
66
67 btnOK.setOnClickListener(new OnClickListener() {
68
69 @TargetApi(18)
70 @Override
71 public void onClick(View v) {
72 if (goingFlag==1) {//用户还没有登录
73 Intent in = new Intent(context,LoginActivity.class);
74 Bundle bundle = new Bundle();
75 bundle.putString("from", activityName);
76 in.putExtras(bundle);
77 context.startActivity(in);
78 }
79 if (goingFlag==4) {
80 //更新软件
81 String apkName = global.getApkName();
82 String apkUrl = global.getApkUrl();
83 Intent in = new Intent(context, DownApkActivity.class);
84 Bundle bundle = new Bundle();
85 bundle.putString("apkName", apkName);
86 bundle.putString("apkUrl", apkUrl);
87 in.putExtras(bundle);
88 context.startActivity(in);
89 }
90 okCancel = 1;
91 popWindow.dismiss();
92 }
93 });
94
95 btnCancel.setOnClickListener(new OnClickListener() {
96 @Override
97 public void onClick(View v) {
98 okCancel = 2;
99 popWindow.dismiss();
100 }
101 });
102
103
104
105 }
106
107 public int getClickState(){
108 return okCancel;
109 }
110
111 public boolean isShowing(){
112 if (!popWindow.isShowing()) {
113 return false;
114 }else {
115 return true;
116 }
117 }
118
119 public int showPopupWindow(View parent) {
120 if (!popWindow.isShowing()) {
121 // 以下拉方式显示popupwindow //Gravity.CENTER_HORIZONTAL|Gravity.CENTER_VERTICAL
122 popWindow.showAtLocation(parent,Gravity.CENTER,0, 0);
123 } else {
124 popWindow.dismiss();
125 }
126 return okCancel ;
127 }
128 }
点击提示框中的确定之后，页面跳转到下载的Activity页面：
1 package com.cn.gordon.exhibition.walk.activity;
2
3 import java.io.File;
4 import java.io.FileOutputStream;
5 import java.io.InputStream;
6 import java.io.OutputStream;
7 import java.net.URL;
8 import java.net.URLConnection;
9
10 import com.cn.gordon.exhibition.walk.utils.Utils;
11
12 import android.annotation.SuppressLint;
13 import android.app.Activity;
14 import android.content.Intent;
15 import android.graphics.Color;
16 import android.net.Uri;
17 import android.os.Bundle;
18 import android.os.Handler;
19 import android.os.Message;
20 import android.view.View;
21 import android.view.View.OnClickListener;
22 import android.widget.Button;
23 import android.widget.ProgressBar;
24 import android.widget.TextView;
25 import android.widget.Toast;
26
27 public class DownApkActivity extends Activity {
28
29 private Button btnOK,btnCancel;
30 private TextView tvComplete;
31 private static final String APK_PATH = Utils.getSDPath()+ java.io.File.separator + "exhibition_walk"; // 存放各个下载器 27
32
33 private Handler mHandler;
34 private ProgressBar bar;
35 private Bundle bundle;
36 private String apkName,apkUrl;
37 @Override
38 protected void onCreate(Bundle savedInstanceState) {
39 super.onCreate(savedInstanceState);
40 setContentView(R.layout.downloadapk);
41 bundle = getIntent().getExtras();
42 if (bundle!=null) {
43 apkName = bundle.getString("apkName");
44 apkUrl = bundle.getString("apkUrl");
45 }
46 init();
47 setAction();
48 if (apkName!=null&&apkUrl!=null&&!"".equals(apkName)&&!"".equals(apkUrl)) {
49 downloadFile(apkUrl,apkName);
50 }
51 }
52 @SuppressLint("HandlerLeak")
53 private void init() {
54 btnOK = (Button) findViewById(R.id.oksure);
55 btnCancel = (Button) findViewById(R.id.nocancel);
56 btnOK.setVisibility(View.INVISIBLE);
57 btnCancel.setVisibility(View.INVISIBLE);
58 tvComplete = (TextView) findViewById(R.id.tv_complete);
59 bar = (ProgressBar) findViewById(R.id.progress_horizontal);
60 mHandler = new Handler() {
61 public void handleMessage(Message msg) {
62 if (msg.what == 1) {
63 // String url = (String) msg.obj;
64 int length = msg.arg1;
65 int totalSize = msg.arg2;
66 int percent = 0;
67 if (totalSize!=0) {
68 percent = (100*length)/totalSize;
69 }
70 tvComplete.setText("下载进度："+percent+"%");
71 if (bar != null) {// 设置进度条按读取的length长度更新
72 bar.setProgress(length);
73 bar.setMax(totalSize);
74 if (length >= totalSize) {
75 Toast.makeText(DownApkActivity.this, "下载完成！", Toast.LENGTH_SHORT).show();
76 // 下载完成后清除进度条并将map中的数据清空 45
77 // LinearLayout layout = (LinearLayout) bar.getParent();//FIXME
78 // layout.removeView(bar);
79 // ProgressBars.remove(url);
80 // downloaders.get(url).delete(url);
81 // downloaders.get(url).reset();
82 // downloaders.remove(url);
83 installApk(APK_PATH,apkName);
84 }
85 }
86 }
87 }
88 };
89 }
90 private void setAction() {
91 btnOK.setOnClickListener(new OnClickListener() {
92 @Override
93 public void onClick(View v) {
94 // TODO Auto-generated method stub
95
96 }
97 });
98 btnCancel.setOnClickListener(new OnClickListener() {
99 @Override
100 public void onClick(View v) {
101 // TODO Auto-generated method stub
102
103 }
104 });
105
106 }
107
108 private void downloadFile(final String fileUrl,final String fileName){
109 //准备拼接新的文件名（保存在存储卡后的文件名）
110 // String newFilename = _urlStr.substring(_urlStr.lastIndexOf("/")+1);
111 // newFilename = _dirName + newFilename;
112 new Thread(new Runnable() {
113
114 @Override
115 public void run() {
116 File file = new File(fileName);
117 //如果目标文件已经存在，则删除。产生覆盖旧文件的效果
118 if(file.exists())
119 {
120 file.delete();
121 }
122 try {
123 // 构造URL
124 URL url = new URL(fileUrl);
125 // 打开连接
126 URLConnection con = url.openConnection();
127 //获得文件的长度
128 int contentLength = con.getContentLength();
129 System.out.println("长度 :"+contentLength);
130 // 输入流
131 InputStream is = con.getInputStream();
132 // 64K的数据缓冲
133 byte[] bs = new byte[1024*8];
134 // 读取到的数据长度
135 int len;
136 //downloadSize
137 int downloadSize = 0;
138
139 // Bundle bund = new Bundle();
140 // 输出的文件流
141 OutputStream os = new FileOutputStream(APK_PATH+java.io.File.separator+fileName);
142 // 开始读取
143 while ((len = is.read(bs)) != -1) {
144 downloadSize+=len;
145 os.write(bs, 0, len);
146 Message message = new Message();
147 message.arg1 = downloadSize;
148 message.arg2 = contentLength;
149 message.what = 1;
150 mHandler.sendMessage(message);
151 }
152 // 完毕，关闭所有链接
153 os.close();
154 is.close();
155
156 } catch (Exception e) {
157 e.printStackTrace();
158 Toast.makeText(DownApkActivity.this, "下载失败", Toast.LENGTH_SHORT).show();
159 // finish();
160 tvComplete.setTextColor(Color.YELLOW);
161 return;
162 }
163
164 }
165 }).start();
166
167 }
168
169
170 /**
171 * 安装APK文件
172 */
173 private void installApk(String filePath,String fileName)//TODO search method parameters
174 {
175 File apkfile = new File(filePath,fileName);
176 if (!apkfile.exists())
177 {
178 return;
179 }
180 // 通过Intent安装APK文件
181 Intent i = new Intent(Intent.ACTION_VIEW);
182 i.setDataAndType(Uri.parse("file://" + APK_PATH + java.io.File.separator +fileName), "application/vnd.android.package-archive");
183 DownApkActivity.this.startActivity(i);
184 }
185
186 }
下载完成后，便开始启动安装软件。
时间： 2024-10-03 23:15:41