Android 版本更新下载自动安装APK，并解决Android6.0安装失败的问题
来源：互联网 发布：奥斯卡软件 编辑：程序博客网 时间：2024/05/16 11:21
现在APP都有版本更新的功能，有的是跳转到浏览器进行下载，感觉比较麻烦，用户体验也不好，简便的方法就是直接下载安装即可。即使用Android自带的DownManager，通过启动一个后台服务进行下载，下载完成之后以广播的形式通知用户安装，方便很多。
比较闹心的还是6.0权限的问题，下载安装需要一个路径，也就需要读写SD卡权限，不过发现一个问题就是：如果自己不定义一个路径，6.0手机下载完成之后，并没有出现安装的界面，只有自己设置了路径才正常。。。
activity跳转到service进行下载
private Intent updataService ;private static int REQUESTPERMISSION = 110 ;public void upData(){ updataService = new Intent(SplashActivity.this, UpdataService.class); updataService.putExtra("downloadurl",version.url); if(ContextCompat.checkSelfPermission(this,Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED){ ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, REQUESTPERMISSION); CommonToast.showToast("请允许权限进行下载安装"); }else{ startService(updataService); }}@Overridepublic void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) { super.onRequestPermissionsResult(requestCode, permissions, grantResults); if(requestCode==REQUESTPERMISSION){ if(permissions[0].equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)){ if (grantResults[0] == PackageManager.PERMISSION_GRANTED){ if(updataService!=null) startService(updataService); }else{ } } }}
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updataService 类直接拿来用
public class UpdataService extends Service { /** * 安卓系统下载类 **/ private DownloadManager manager; /** * 接收下载完的广播 **/ private DownloadCompleteReceiver receiver; private String url; private String DOWNLOADPATH = "/apk/"; /** * 初始化下载器 **/ private void initDownManager() { manager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE); receiver = new DownloadCompleteReceiver(); DownloadManager.Request down = new DownloadManager.Request(Uri.parse(url)); down.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_MOBILE | DownloadManager.Request.NETWORK_WIFI); down.setAllowedOverRoaming(false); MimeTypeMap mimeTypeMap = MimeTypeMap.getSingleton(); String mimeString = mimeTypeMap.getMimeTypeFromExtension(MimeTypeMap.getFileExtensionFromUrl(url)); down.setMimeType(mimeString); down.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE); down.setVisibleInDownloadsUi(true); down.setDestinationInExternalPublicDir(DOWNLOADPATH, "member.apk"); down.setTitle("member"); manager.enqueue(down); registerReceiver(receiver, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE)); } @Override public int onStartCommand(Intent intent, int flags, int startId) { url = intent.getStringExtra("url"); String path = Environment.getExternalStorageDirectory().getAbsolutePath() +DOWNLOADPATH+ "member.apk"; File file = new File(path); if (file.exists()) { file.delete(); } try { initDownManager(); } catch (Exception e) { e.printStackTrace(); Toast.makeText(getApplicationContext(), "下载失败", Toast.LENGTH_SHORT).show(); } return Service.START_NOT_STICKY; } @Override public IBinder onBind(Intent intent) { return null; } @Override public void onDestroy() { if (receiver != null) unregisterReceiver(receiver); super.onDestroy(); } class DownloadCompleteReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { if (intent.getAction().equals(DownloadManager.ACTION_DOWNLOAD_COMPLETE)) { long downId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1); if (manager.getUriForDownloadedFile(downId) != null) { installAPK(manager.getUriForDownloadedFile(downId), context); } else { Toast.makeText(context, "下载失败", Toast.LENGTH_SHORT).show(); } UpdataService.this.stopSelf(); } } private void installAPK(Uri apk, Context context) { if (Build.VERSION.SDK_INT < 23) { Intent intents = new Intent(); intents.setAction("android.intent.action.VIEW"); intents.addCategory("android.intent.category.DEFAULT"); intents.setType("application/vnd.android.package-archive"); intents.setData(apk); intents.setDataAndType(apk, "application/vnd.android.package-archive"); intents.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(intents); } else { File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath() +DOWNLOADPATH+ "member.apk"); if (file.exists()) { openFile(file, context); } } } private void installAPK(Context context) { File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath() +DOWNLOADPATH+ "member.apk"); if (file.exists()) { openFile(file, context); } else { Toast.makeText(context, "下载失败", Toast.LENGTH_SHORT).show(); } } } public void openFile(File file, Context context) { Intent intent = new Intent(); intent.addFlags(268435456); intent.setAction("android.intent.action.VIEW"); String type = getMIMEType(file); intent.setDataAndType(Uri.fromFile(file), type); try { context.startActivity(intent); } catch (Exception var5) { var5.printStackTrace(); Toast.makeText(context, "没有找到打开此类文件的程序", Toast.LENGTH_SHORT).show(); } } public String getMIMEType(File var0) { String var1 = ""; String var2 = var0.getName(); String var3 = var2.substring(var2.lastIndexOf(".") + 1, var2.length()).toLowerCase(); var1 = MimeTypeMap.getSingleton().getMimeTypeFromExtension(var3); return var1; }}
http://blog.csdn.net/asialyf/article/details/53259579
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