Android版本升级demo

package com.ljp.version; import java.io.BufferedReader; import java.io.File; import java.io.FileOutputStream; import java.io.InputStream; import java.io.InputStreamReader; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.params.BasicHttpParams; import org.apache.http.params.HttpConnectionParams; import org.apache.http.params.HttpParams; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import android.app.ActivityGroup; import android.app.AlertDialog; import android.app.AlertDialog.Builder; import android.app.Dialog; 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.os.Message; import android.view.LayoutInflater; import android.widget.LinearLayout; import android.widget.ProgressBar; import android.widget.TextView; import android.widget.Toast; import com.ljp.version.service.VersionService; public class TestVersionUpdateActivity extends ActivityGroup { private int currentV=0, newV=0; private JSONObject jo_v; private String newVContent = ""; private ProgressBar pb;private TextView tv; public static int loading_process; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.layout_main); loading_process=0; if (isConnect(TestVersionUpdateActivity.this)) { // TODO Auto-generated method stub currentV = getVerCode(TestVersionUpdateActivity.this,"com.ljp.version"); new Thread() { public void run() { jo_v = getJsonObject("http://1.nightman.sinaapp.com/test/newVersion.php"); if (jo_v != null && jo_v.has("version")) try { newV = jo_v.getInt("version"); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } if (newV > currentV) { Message msg = BroadcastHandler.obtainMessage(); BroadcastHandler.sendMessage(msg); } } }.start(); } } private Handler BroadcastHandler = new Handler() { public void handleMessage(Message msg) { if (jo_v.has("content")) { JSONArray items; try { items = jo_v.getJSONArray("content"); for (int i = 0; i < items.length(); i++) { JSONObject d = items.getJSONObject(i); newVContent = newVContent + (i + 1) + "." + d.getString("text") + "\n"; } } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } } Dialog dialog = new AlertDialog.Builder( TestVersionUpdateActivity.this) .setTitle("新版本更新内容") .setMessage(newVContent) .setPositiveButton("马上更新", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { Beginning(); dialog.dismiss(); } }) .setNegativeButton("以后再说", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { dialog.dismiss(); } }).create(); dialog.show(); } }; public void Beginning(){ LinearLayout ll = (LinearLayout) LayoutInflater.from(TestVersionUpdateActivity.this).inflate( R.layout.layout_loadapk, null); pb = (ProgressBar) ll.findViewById(R.id.down_pb); tv = (TextView) ll.findViewById(R.id.tv); Builder builder = new Builder(TestVersionUpdateActivity.this); builder.setView(ll);builder.setTitle("版本更新进度提示"); builder.setNegativeButton("后台下载", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { Intent intent=new Intent(TestVersionUpdateActivity.this, VersionService.class); startService(intent); dialog.dismiss(); } }); builder.show(); new Thread() { public void run() { loadFile("http://1.nightman.sinaapp.com/test/good.zip"); } }.start(); } public void loadFile(String url) { HttpClient client = new DefaultHttpClient(); HttpGet get = new HttpGet(url); HttpResponse response; try { response = client.execute(get); HttpEntity entity = response.getEntity(); float length = entity.getContentLength(); InputStream is = entity.getContent(); FileOutputStream fileOutputStream = null; if (is != null) { File file = new File(Environment.getExternalStorageDirectory(), "NightMan.apk"); fileOutputStream = new FileOutputStream(file); byte[] buf = new byte[1024]; int ch = -1; float count = 0; while ((ch = is.read(buf)) != -1) { fileOutputStream.write(buf, 0, ch); count += ch; sendMsg(1,(int) (count*100/length)); } } sendMsg(2,0); fileOutputStream.flush(); if (fileOutputStream != null) { fileOutputStream.close(); } } catch (Exception e) { sendMsg(-1,0); } } private void sendMsg(int flag,int c) { Message msg = new Message(); msg.what = flag;msg.arg1=c; handler.sendMessage(msg); } private Handler handler = new Handler() { @Override public void handleMessage(Message msg) {// 定义一个Handler，用于处理下载线程与UI间通讯 if (!Thread.currentThread().isInterrupted()) { switch (msg.what) { case 1: pb.setProgress(msg.arg1); loading_process = msg.arg1; tv.setText("已为您加载了：" + loading_process + "%"); break; case 2: Intent intent = new Intent(Intent.ACTION_VIEW); intent.setDataAndType(Uri.fromFile(new File(Environment .getExternalStorageDirectory(), "NightMan.apk")), "application/vnd.android.package-archive"); startActivity(intent); break; case -1: String error = msg.getData().getString("error"); Toast.makeText(TestVersionUpdateActivity.this, error, 1).show(); break; } } super.handleMessage(msg); } }; public JSONObject getJsonObject(String Url) { HttpClient client = new DefaultHttpClient(); StringBuilder sb = new StringBuilder(); String js = null;JSONObject son=null; HttpGet myget = new HttpGet(Url); try { HttpParams params = new BasicHttpParams(); HttpConnectionParams.setConnectionTimeout(params, 8000); HttpResponse response = client.execute(myget); BufferedReader reader = new BufferedReader(new InputStreamReader( response.getEntity().getContent())); for (String s = reader.readLine(); s != null; s = reader.readLine()) { sb.append(s); } js = sb.toString(); son = new JSONObject(js); } catch (Exception e) { // TODO Auto-generated catch block System.out.println("异常-》下载转化JSON"); return null; } return son; } public boolean isConnect(Context context) { ConnectivityManager connectivity = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); if (connectivity != null) { NetworkInfo info = connectivity.getActiveNetworkInfo(); if (info != null && info.isConnected()) { if (info.getState() == NetworkInfo.State.CONNECTED) { return true; } } } return false; } public int getVerCode(Context _context,String _package) { int verCode = -1; try { verCode = _context.getPackageManager().getPackageInfo( _package, 0).versionCode; } catch (NameNotFoundException e) { } return verCode; } }