Android系统单个应用的自动升级更新（通过http连接tomcat7）

package com.updateapp; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.DefaultHttpClient; import org.json.JSONArray; import org.json.JSONObject; import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.app.ProgressDialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.pm.PackageManager.NameNotFoundException; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.net.Uri; import android.os.Bundle; import android.os.Environment; import android.os.Handler; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; public class UpdateAppActivity extends Activity { /** Called when the activity is first created. */ private static final String TAG = "Update"; private Button btnUpdateApp; private ProgressDialog pBar; private String downPath = "http://10.0.2.2:8080/"; private String appName = "NewAppSample.apk"; private String appVersion = "version.json"; private int newVerCode = 0; private String newVerName = ""; private Handler handler=new Handler(); @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); try { if(isNetworkAvailable(this) == false){ return; }else{ checkToUpdate(); } } catch (NameNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } btnUpdateApp = (Button)findViewById(R.id.btnUpdateApp); btnUpdateApp.setOnClickListener(new OnClickListener(){ @Override public void onClick(View arg0) { // TODO Auto-generated method stub } }); } //check the Network is available private static boolean isNetworkAvailable(Context context) { // TODO Auto-generated method stub try{ ConnectivityManager cm = (ConnectivityManager)context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo netWorkInfo = cm.getActiveNetworkInfo(); return (netWorkInfo != null && netWorkInfo.isAvailable());//检测网络是否可用 }catch(Exception e){ e.printStackTrace(); return false; } } //check new version and update private void checkToUpdate() throws NameNotFoundException { // TODO Auto-generated method stub if(getServerVersion()){ int currentCode = CurrentVersion.getVerCode(this); if(newVerCode > currentCode) {//Current Version is old //弹出更新提示对话框 showUpdateDialog(); } } } //show Update Dialog private void showUpdateDialog() throws NameNotFoundException { // TODO Auto-generated method stub StringBuffer sb = new StringBuffer(); sb.append("当前版本："); sb.append(CurrentVersion.getVerName(this)); sb.append("VerCode:"); sb.append(CurrentVersion.getVerCode(this)); sb.append("\n"); sb.append("发现新版本："); sb.append(newVerName); sb.append("NewVerCode:"); sb.append(newVerCode); sb.append("\n"); sb.append("是否更新？"); Dialog dialog = new AlertDialog.Builder(UpdateAppActivity.this) .setTitle("软件更新") .setMessage(sb.toString()) .setPositiveButton("更新", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub showProgressBar();//更新当前版本 } }) .setNegativeButton("暂不更新", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub } }).create(); dialog.show(); } protected void showProgressBar() { // TODO Auto-generated method stub pBar = new ProgressDialog(UpdateAppActivity.this); pBar.setTitle("正在下载"); pBar.setMessage("请稍后..."); pBar.setProgressStyle(ProgressDialog.STYLE_SPINNER); downAppFile(downPath + appName); } //Get ServerVersion from GetUpdateInfo.getUpdateVerJSON private boolean getServerVersion() { // TODO Auto-generated method stub try{ String newVerJSON = GetUpdateInfo.getUpdataVerJSON(downPath + appVersion); JSONArray jsonArray = new JSONArray(newVerJSON); if(jsonArray.length() > 0){ JSONObject obj = jsonArray.getJSONObject(0); try{ newVerCode = Integer.parseInt(obj.getString("verCode")); newVerName = obj.getString("verName"); }catch(Exception e){ Log.e(TAG, e.getMessage()); newVerCode = -1; newVerName = ""; return false; } } }catch(Exception e){ Log.e(TAG, e.getMessage()); return false; } return true; } protected void downAppFile(final String url) { pBar.show(); new Thread(){ public void run(){ HttpClient client = new DefaultHttpClient(); HttpGet get = new HttpGet(url); HttpResponse response; try { response = client.execute(get); HttpEntity entity = response.getEntity(); long length = entity.getContentLength(); Log.isLoggable("DownTag", (int) length); InputStream is = entity.getContent(); FileOutputStream fileOutputStream = null; if(is == null){ throw new RuntimeException("isStream is null"); } File file = new File(Environment.getExternalStorageDirectory(),appName); fileOutputStream = new FileOutputStream(file); byte[] buf = new byte[1024]; int ch = -1; do{ ch = is.read(buf); if(ch <= 0)break; fileOutputStream.write(buf, 0, ch); }while(true); is.close(); fileOutputStream.close(); haveDownLoad(); }catch(ClientProtocolException e){ e.printStackTrace(); }catch(IOException e){ e.printStackTrace(); } } }.start(); } //cancel progressBar and start new App protected void haveDownLoad() { // TODO Auto-generated method stub handler.post(new Runnable(){ public void run(){ pBar.cancel(); //弹出警告框 提示是否安装新的版本 Dialog installDialog = new AlertDialog.Builder(UpdateAppActivity.this) .setTitle("下载完成") .setMessage("是否安装新的应用") .setPositiveButton("确定", new DialogInterface.OnClickListener(){ @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub installNewApk(); finish(); } }) .setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub finish(); } }) .create(); installDialog.show(); } }); } //安装新的应用 protected void installNewApk() { // TODO Auto-generated method stub Intent intent = new Intent(Intent.ACTION_VIEW); intent.setDataAndType(Uri.fromFile( new File(Environment.getExternalStorageDirectory(),appName)), "application/vnd.android.package-archive"); startActivity(intent); } }