android 檢查版本,自動更新
阿新 • • 發佈:2018-12-31
<span style="font-size:14px;">怎麼檢索apk版本,然後自動更新?</span>
<span style="font-size:14px;">一共需要4步</span>
<span style="font-size:14px;">1儲存Bean;</span>
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package cn.demo.app.bean; import java.io.Serializable; public class Update implements Serializable{ private static final long serialVersionUID = -33345024522629534L; private int versionCode; private String versionName; private String downloadUrl; private String updateLog; public int getVersionCode() { return versionCode; } public void setVersionCode(int versionCode) { this.versionCode = versionCode; } public String getVersionName() { return versionName; } public void setVersionName(String versionName) { this.versionName = versionName; } public String getDownloadUrl() { return downloadUrl; } public void setDownloadUrl(String downloadUrl) { this.downloadUrl = downloadUrl; } public String getUpdateLog() { return updateLog; } public void setUpdateLog(String updateLog) { this.updateLog = updateLog; } @Override public String toString() { return "Update [versionCode=" + versionCode + ", versionName=" + versionName + ", downloadUrl=" + downloadUrl + ", updateLog=" + updateLog + "]"; } }
2 管理更新檔案:
package cn.demo.app.common; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import java.text.DecimalFormat; import android.app.AlertDialog; import android.app.AlertDialog.Builder; import android.app.Dialog; import android.app.ProgressDialog; import android.content.Context; import android.content.DialogInterface; import android.content.DialogInterface.OnCancelListener; import android.content.DialogInterface.OnClickListener; import android.content.Intent; import android.content.pm.PackageInfo; import android.content.pm.PackageManager.NameNotFoundException; import android.net.Uri; import android.os.Environment; import android.os.Handler; import android.os.Message; import android.text.Html; import android.view.LayoutInflater; import android.view.View; import android.widget.ProgressBar; import android.widget.TextView; import android.widget.Toast; import cn.haiwan.R; import com.google.gson.Gson; /** * 應用程式更新工具包 * @version 1.1 * @created 2012-6-29 */ public class UpdateManager { private static final int DOWN_NOSDCARD = 0; private static final int DOWN_UPDATE = 1; private static final int DOWN_OVER = 2; private static final int DIALOG_TYPE_LATEST = 0; private static final int DIALOG_TYPE_FAIL = 1; private static UpdateManager updateManager; private Context mContext; //通知對話方塊 private Dialog noticeDialog; //下載對話方塊 private Dialog downloadDialog; //'已經是最新' 或者 '無法獲取最新版本' 的對話方塊 private Dialog latestOrFailDialog; //進度條 private ProgressBar mProgress; //顯示下載數值 private TextView mProgressText; //查詢動畫 private ProgressDialog mProDialog; //進度值 private int progress; //下載執行緒 private Thread downLoadThread; //終止標記 private boolean interceptFlag; //提示語 private String updateMsg = ""; //返回的安裝包url private String apkUrl = ""; //下載包儲存路徑 private String savePath = ""; //apk儲存完整路徑 private String apkFilePath = ""; //臨時下載檔案路徑 private String tmpFilePath = ""; //下載檔案大小 private String apkFileSize; //已下載檔案大小 private String tmpFileSize; private String curVersionName = ""; private int curVersionCode; private Update mUpdate; private Handler mHandler = new Handler(){ public void handleMessage(Message msg) { switch (msg.what) { case DOWN_UPDATE: mProgress.setProgress(progress); mProgressText.setText(tmpFileSize + "/" + apkFileSize); break; case DOWN_OVER: downloadDialog.dismiss(); installApk(); break; case DOWN_NOSDCARD: downloadDialog.dismiss(); Toast.makeText(mContext, "無法下載安裝檔案,請檢查SD卡是否掛載", 3000).show(); break; } }; }; public static UpdateManager getUpdateManager() { if(updateManager == null){ updateManager = new UpdateManager(); } updateManager.interceptFlag = false; return updateManager; } /** * 檢查App更新 * @param context * @param isShowMsg 是否顯示提示訊息 */ public void checkAppUpdate(Context context, final boolean isShowMsg){ this.mContext = context; getCurrentVersion(); if(isShowMsg){ if(mProDialog == null) mProDialog = ProgressDialog.show(mContext, null, "正在檢測,請稍後...", true, true); else if(mProDialog.isShowing() || (latestOrFailDialog!=null && latestOrFailDialog.isShowing())) return; } final Handler handler = new Handler(){ public void handleMessage(Message msg) { //進度條對話方塊不顯示 - 檢測結果也不顯示 if(mProDialog != null && !mProDialog.isShowing()){ return; } //關閉並釋放釋放進度條對話方塊 if(isShowMsg && mProDialog != null){ mProDialog.dismiss(); mProDialog = null; } //顯示檢測結果 if(msg.what == 1){ mUpdate = (Update)msg.obj; if(mUpdate != null){ if(curVersionCode < mUpdate.getVersionCode()){ apkUrl = mUpdate.getDownloadUrl(); updateMsg = mUpdate.getUpdateLog(); showNoticeDialog(); }else if(isShowMsg){ showLatestOrFailDialog(DIALOG_TYPE_LATEST); } } }else if(isShowMsg){ showLatestOrFailDialog(DIALOG_TYPE_FAIL); } } }; new Thread(){ public void run() { Message msg = new Message(); try { String data = HttpUtil.sendGet("http://file.demo.com/app/android/update.json","utf-8");
3 progress.xml//這個地址是伺服器返回給你的 if (data != null) { Gson gson = new Gson(); Update update = gson.fromJson(data, Update.class); msg.what = 1; msg.obj = update; } } catch (Exception e) { e.printStackTrace(); } handler.sendMessage(msg); } }.start(); } /** * 顯示'已經是最新'或者'無法獲取版本資訊'對話方塊 */ private void showLatestOrFailDialog(int dialogType) { if (latestOrFailDialog != null) { //關閉並釋放之前的對話方塊 latestOrFailDialog.dismiss(); latestOrFailDialog = null; } AlertDialog.Builder builder = new Builder(mContext); builder.setTitle("系統提示"); if (dialogType == DIALOG_TYPE_LATEST) { builder.setMessage("您當前已經是最新版本"); } else if (dialogType == DIALOG_TYPE_FAIL) { builder.setMessage("無法獲取版本更新資訊"); } builder.setPositiveButton("確定", null); latestOrFailDialog = builder.create(); latestOrFailDialog.show(); } /** * 獲取當前客戶端版本資訊 */ private void getCurrentVersion(){ try { PackageInfo info = mContext.getPackageManager().getPackageInfo(mContext.getPackageName(), 0); curVersionName = info.versionName; curVersionCode = info.versionCode; } catch (NameNotFoundException e) { e.printStackTrace(System.err); } } /** * 顯示版本更新通知對話方塊 */ private void showNoticeDialog(){ AlertDialog.Builder builder = new Builder(mContext); builder.setTitle("新版本更新"); builder.setMessage(Html.fromHtml(updateMsg)); builder.setPositiveButton("立即更新", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); showDownloadDialog(); } }); builder.setNegativeButton("以後再說", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }); noticeDialog = builder.create(); noticeDialog.show(); } /** * 顯示下載對話方塊 */ private void showDownloadDialog(){ AlertDialog.Builder builder = new Builder(mContext); builder.setTitle("正在下載新版本"); final LayoutInflater inflater = LayoutInflater.from(mContext); View v = inflater.inflate(R.layout.update_progress, null); mProgress = (ProgressBar)v.findViewById(R.id.update_progress); mProgressText = (TextView) v.findViewById(R.id.update_progress_text); builder.setView(v); builder.setNegativeButton("取消", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); interceptFlag = true; } }); builder.setOnCancelListener(new OnCancelListener() { @Override public void onCancel(DialogInterface dialog) { dialog.dismiss(); interceptFlag = true; } }); downloadDialog = builder.create(); downloadDialog.setCanceledOnTouchOutside(false); downloadDialog.show(); downloadApk(); } private Runnable mdownApkRunnable = new Runnable() { @Override public void run() { try { String apkName = "HaiwanAPP_"+mUpdate.getVersionName()+".apk"; String tmpApk = "HaiwanAPP_"+mUpdate.getVersionName()+".tmp"; //判斷是否掛載了SD卡 String storageState = Environment.getExternalStorageState(); if(storageState.equals(Environment.MEDIA_MOUNTED)){ savePath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/HaiwanAPP/Update/"; File file = new File(savePath); if(!file.exists()){ file.mkdirs(); } apkFilePath = savePath + apkName; tmpFilePath = savePath + tmpApk; } //沒有掛載SD卡,無法下載檔案 if(apkFilePath == null || apkFilePath == ""){ mHandler.sendEmptyMessage(DOWN_NOSDCARD); return; } File ApkFile = new File(apkFilePath); //是否已下載更新檔案 if(ApkFile.exists()){ downloadDialog.dismiss(); installApk(); return; } //輸出臨時下載檔案 File tmpFile = new File(tmpFilePath); FileOutputStream fos = new FileOutputStream(tmpFile); URL url = new URL(apkUrl); HttpURLConnection conn = (HttpURLConnection)url.openConnection(); conn.connect(); int length = conn.getContentLength(); InputStream is = conn.getInputStream(); //顯示檔案大小格式:2個小數點顯示 DecimalFormat df = new DecimalFormat("0.00"); //進度條下面顯示的總檔案大小 apkFileSize = df.format((float) length / 1024 / 1024) + "MB"; int count = 0; byte buf[] = new byte[1024]; do{ int numread = is.read(buf); count += numread; //進度條下面顯示的當前下載檔案大小 tmpFileSize = df.format((float) count / 1024 / 1024) + "MB"; //當前進度值 progress =(int)(((float)count / length) * 100); //更新進度 mHandler.sendEmptyMessage(DOWN_UPDATE); if(numread <= 0){ //下載完成 - 將臨時下載檔案轉成APK檔案 if(tmpFile.renameTo(ApkFile)){ //通知安裝 mHandler.sendEmptyMessage(DOWN_OVER); } break; } fos.write(buf,0,numread); }while(!interceptFlag);//點選取消就停止下載 fos.close(); is.close(); } catch (MalformedURLException e) { e.printStackTrace(); } catch(IOException e){ e.printStackTrace(); } } }; /** * 下載apk * @param url */ private void downloadApk(){ downLoadThread = new Thread(mdownApkRunnable); downLoadThread.start(); } /** * 安裝apk * @param url */ private void installApk(){ File apkfile = new File(apkFilePath); if (!apkfile.exists()) { return; } Intent i = new Intent(Intent.ACTION_VIEW); i.setDataAndType(Uri.parse("file://" + apkfile.toString()), "application/vnd.android.package-archive"); mContext.startActivity(i); } }
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingLeft="5dip"
android:paddingRight="5dip"
android:orientation="vertical">
<ProgressBar
android:id="@+id/update_progress"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
style="?android:attr/progressBarStyleHorizontal"/>
<TextView
android:id="@+id/update_progress_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:textColor="@color/text_blak_light"/>
</LinearLayout>
最後一個是需要放在伺服器上的
update.json
{
"versionCode":20111111,
"versionName":"1.0",
"downloadUrl":"http://file.demo.com/app/android/oneapm.apk",
"updateLog":"<b>V0.01</b><br/>1.優化載入速度<br/>2.修復一些BUGS"
}
"versionCode" <pre name="code" class="java">"versionName"
對應manifest裡的versionCode,versionName