android App版本升级功能 - 好文

一般的安卓app都有自动更新功能，实现app的更新，以让用户体验新版本的功能，这里也是项目中用到的，今天就来总结一下。做和记录。
import android.annotation.SuppressLint; import android.app.Activity; import
android.content.Context; import android.content.Intent; import
android.content.pm.PackageManager; import android.net.Uri; import
android.os.Build; import android.os.Handler; import android.os.Message; import
android.support.v4.app.ActivityCompat; import
android.support.v4.content.ContextCompat; import android.util.Log; import
android.view.LayoutInflater; import android.view.View; import
android.widget.ProgressBar; import android.widget.Toast; import
com.gwkj.qixiubaodian.Manifest; import com.gwkj.qixiubaodian.R; import
com.gwkj.qixiubaodian.qxbd.SdCardUtils; 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; /** * 版本更新 */ public class
UpdateManager extends SdCardUtils { private Context mContext; private String
updateMsg = "发现新版本，请及时更新";// 提示语 private String apkurl = "";// 返回的安装包url//
private AlertDialogEx downloadDialog;// 下载提示 @SuppressLint("SdCardPath")
private static final String savePath1 = "/sdcard/App";// 保存路径
@SuppressLint("SdCardPath") private static final String savePath =
"/sdcard/App/updatedemo/";// 保存路径 private static final String saveFileName =
"App.apk"; private ProgressBar mProgress;// 进度条 private static final int
DOWN_UPDATE = 1; private static final int DOWN_OVER = 2; private int progress;
private Thread downLoadThread; private boolean interceptFlag = false; // 外部接口调用
public void checkUpdateInfo(String apkurl, String apkInfo) { this.apkurl =
apkurl; this.updateMsg = apkInfo; showNoticeDialog(); } // 当有新版本提示示更新 public
void showNoticeDialog() { final AlertDialogEx alert = new
AlertDialogEx(mContext); alert.setTitle("软件版本更新"); alert.setMessage(updateMsg);
alert.setConfirmButton("立即更新", new AlertDialogEx.OnClickListener() { @Override
public void onClick(AlertDialogEx dialog, int button) { showDownloadDialog(); }
}); // alert.setCancelButton("暂不更新", null); alert.show(); } // 下载apk public
void showDownloadDialog() { downloadDialog = new AlertDialogEx(mContext); final
LayoutInflater inflater = LayoutInflater.from(mContext); View v =
inflater.inflate(R.layout.pross, null); mProgress = (ProgressBar)
v.findViewById(R.id.progress); downloadDialog.setTitle("软件更新");
downloadDialog.setCancelButton("取消更新", new AlertDialogEx.OnClickListener() {
@Override public void onClick(AlertDialogEx dialog, int button) {
downloadDialog.dismiss(); interceptFlag = true; } }); downloadDialog.show();
downloadDialog.setContentView(v); downloadApk(); } @SuppressLint("HandlerLeak")
private Handler mHandler = new Handler() { public void handleMessage(Message
msg) { switch (msg.what) { case DOWN_UPDATE: mProgress.setProgress(progress);
break; case DOWN_OVER: downloadDialog.dismiss(); installApk(); break; } } };
public UpdateManager(Context context) { this.mContext = context; } private
static final int REQUEST_EXTERNAL_STORAGE = 1; private static String[]
PERMISSIONS_STORAGE = { "android.permission.READ_EXTERNAL_STORAGE",
"android.permission.WRITE_EXTERNAL_STORAGE"}; // 申请所需的权限 public static void
verifyStoragePermissions(Context context) { try { //检测是否有写的权限 int permission =
ActivityCompat.checkSelfPermission(context,
"android.permission.WRITE_EXTERNAL_STORAGE"); if (permission !=
PackageManager.PERMISSION_GRANTED) { // 没有写的权限，去申请写的权限，会弹出对话框
ActivityCompat.requestPermissions((Activity) context, PERMISSIONS_STORAGE,
REQUEST_EXTERNAL_STORAGE); } } catch (Exception e) { e.printStackTrace(); } }
// 申请所需的权限 private Runnable mdownApkRunnable = new Runnable() { @Override
public void run() { try { URL url = new URL(apkurl); HttpURLConnection conn =
(HttpURLConnection) url .openConnection(); conn.connect(); int length =
conn.getContentLength(); InputStream is = conn.getInputStream(); //
假如大于6.0申请所需的权限 if (Build.VERSION.SDK_INT >= 23) { //假如大于23则申请权限
verifyStoragePermissions(mContext); if (SdCardUtils.checkSdCard() == true) {
SdCardUtils.createFileDir(SdCardUtils.FILEDIR);
SdCardUtils.createFileDir(SdCardUtils.FILEDIR + "/" + SdCardUtils.FILEPHOTO); }
else { Toast.makeText(mContext, "创建文件夹失败SD卡不可用", Toast.LENGTH_LONG).show(); } }
else { //否则则直接创建文件夹 SdCardUtils.createFileDir(SdCardUtils.FILEDIR);
SdCardUtils.createFileDir(SdCardUtils.FILEDIR + "/" + SdCardUtils.FILEPHOTO); }
File file1 = new File(savePath1); if (!file1.exists()) { file1.mkdir(); } File
file = new File(SdCardUtils.getSdApkPath()); if (!file.exists()) {
file.mkdir(); } String apkFile = SdCardUtils.getSdApkPath() + "/" +
saveFileName; File ApkFile = new File(apkFile); if (ApkFile.isFile() &&
ApkFile.exists()) { ApkFile.delete(); } ApkFile.createNewFile();
FileOutputStream fos = new FileOutputStream(apkFile); int count = 0; byte buf[]
= new byte[1024]; do { int numread = is.read(buf); count += numread; progress =
(int) (((float) count / length) * 100); // 更新进度
mHandler.sendEmptyMessage(DOWN_UPDATE); if (numread <= 0) { // 下载完成通知安装
mHandler.sendEmptyMessage(DOWN_OVER); break; } fos.write(buf, 0, numread);
fos.flush(); } while (!interceptFlag);// 点击取消就停止下载. fos.close(); is.close(); }
catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e)
{ e.printStackTrace(); } } }; // 下载apk private void downloadApk() {
downLoadThread = new Thread(mdownApkRunnable); downLoadThread.start(); } //
安装apk private void installApk() { File apkFile = new
File(SdCardUtils.getSdApkPath() + "/" + saveFileName); if (!apkFile.exists()) {
return; } Intent i = new Intent(Intent.ACTION_VIEW); // 新加的打开询问
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); i.setDataAndType(Uri.parse("file://"
+ apkFile.toString()), "application/vnd.android.package-archive");
mContext.startActivity(i); } }
Sd卡创建文件工具类；
import android.os.Environment; import android.util.Log; import java.io.File;
/** * 创建文件工具类 * Created by admin on 2018/6/14. */ public class SdCardUtils {
private String[] permissions = new String[]{android.Manifest.permission.CAMERA,
android.Manifest.permission.READ_EXTERNAL_STORAGE,
android.Manifest.permission.WRITE_EXTERNAL_STORAGE}; private static final int
REQUEST_1 = 1; // 项目文件根目录 public static final String FILEDIR = "QiXiuBaoDian";
// 项目APK目录 public static final String FILEPHOTO = "updatedemo"; // 应用程序图片存放
public static final String FILEIMAGE = "/images"; // 应用程序缓存 public static final
String FILECACHE = "/cache"; // 用户信息目录 public static final String FILEUSER =
"user"; private static String path; /* * 检查sd卡是否可用 * getExternalStorageState
获取状态 * Environment.MEDIA_MOUNTED 直译环境媒体登上表示，当前sd可用 */ public static boolean
checkSdCard() { if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) //sd卡可用 return true; else //当前sd卡不可用 return false;
} /* * 获取sd卡的文件路径 * getExternalStorageDirectory 获取路径 */ public static String
getSdPath() { return Environment.getExternalStorageDirectory() + "/"; } /* *
创建一个文件夹 */ public static void createFileDir(String fileDir) { path =
getSdPath() + fileDir; File path1 = new File(path); if (!path1.exists()) {
path1.mkdirs(); Log.i("yang", "我被创建了"); Log.e("path", path); } } public static
String getSdApkPath() { return path; } }
应用：
/** * 版本更新 */ @SuppressLint("StaticFieldLeak") class UpgradeTask extends
AsyncTask<Void, Void, UpgradeResponse> { @Override protected UpgradeResponse
doInBackground(Void... params) { return DataInterface.upgradeResponse(); }
@Override protected void onPostExecute(UpgradeResponse upgradeResponse) {
String packageName = getPackageName(); int versionCode = 0; try { versionCode =
getPackageManager().getPackageInfo(packageName, 0).versionCode; } catch
(PackageManager.NameNotFoundException e) { return; } if (upgradeResponse !=
null) { int newver = upgradeResponse.getApp_ver();//新版本号 String sesc =
upgradeResponse.getDesc();//更新内容 String apk = upgradeResponse.getUrl();//更新地址
if (versionCode < newver) { UpdateManager updateManager = new
UpdateManager(MainActivity.this); updateManager.checkUpdateInfo(apk, sesc); } }
else { Toast.makeText(MainActivity.this, "服务器开小差啦,请稍后再试",
Toast.LENGTH_SHORT).show(); } } }

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