我需要能够通过检查某处托管的apk的较新版本（通过versionCode / versionName）将更新推送到私有应用（在Play商店中不存在）。
我相信我已经有了所有需要的代码-连接到Dropbox，下载文件， 触发广播接收器以检查版本并安装应用程序（如果可用）。
我的问题是getPackageArchiveInfo始终在下载的apk上返回null。
注意：下载应用程序后（文件未损坏），我可以手动安装该应用程序，但是我需要自动执行此过程。
*在此示例中使用Dropbox，但这不是prod所使用的。
我使用了一些不同的资源来构建并尝试调试我的问题，请参见：
Android: install .apk programmatically
Android install apk with Intent.VIEW_ACTION not working with File provider
compileSdkVersion为27，minSdkVersion和targetSdkVersion为23。此配置至关重要，无法更改。
我主要是在设置为生产设备将要使用的特定配置的仿真器上进行测试，但是我也正在使用Galaxy S6进行测试。
MainActivity：
public void onCheckClick(View view) {
try {
String versionName = getPackageManager().getPackageInfo(getPackageName(), 0).versionName;
txtCurrent.setText("Current: " + versionName);
String url = apkLocation;
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));
request.setDescription("description");
request.setTitle("app-debug.apk");
request.allowScanningByMediaScanner();
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "app-debug.apk");
DownloadManager manager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
manager.enqueue(request);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
}
public void onUpdateClick(View view) {
Intent installIntent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
installIntent.setDataAndType(Uri.parse("file:///storage/emulated/0/Download/app-debug.apk"), "application/vnd.android.package-archive");
startActivity(installIntent);
}
DownloadBroadcastReceiver：
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)){
//do stuff
PackageManager pm = context.getPackageManager();
String apkName = "app-debug.apk";
String fullPath = Environment.DIRECTORY_DOWNLOADS + "/" + apkName;
PackageInfo info = pm.getPackageArchiveInfo(fullPath, 0);
Toast.makeText(context, info.packageName, Toast.LENGTH_LONG).show();
}
}
AndroidManifest：
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".DownloadBroadcastReceiver">
<intent-filter>
<action android:name="android.intent.action.DOWNLOAD_COMPLETE"/>
</intent-filter>
</receiver>
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="${applicationId}.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/filepaths" />
</provider>
</application>
预期：从下载的apk中获取版本信息，然后如果该apk具有较新版本，则可以安装该apk。
实际：版本信息为空，因此无法继续该过程。
答案 0 :(得分：0)
我遇到了同样的问题。 我刚刚解决了。这是我的解决方案： （注意：我在这里使用了 FTP 服务器，Targated SDK 23）
AndroidManifest：
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="${applicationId}.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths"/>
</provider>
下载 Apk 类：
class DownloadNewVersion extends AsyncTask<String,Integer,Boolean> {
@Override
protected void onPreExecute() {
super.onPreExecute();
progressdlg = new ProgressDialog(DownloadApk.this);
progressdlg.setCancelable(false);
progressdlg.setMessage("Downloading...");
progressdlg.setProgressStyle(progressdlg.STYLE_SPINNER);
//progressdlg.setMax(100);
progressdlg.setIndeterminate(true);
progressdlg.setCanceledOnTouchOutside(false);
progressdlg.show();
}
@Override
protected void onPostExecute(Boolean result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
progressdlg.dismiss();
if(result){
Toast.makeText(DownloadApk.this,"Done!!", Toast.LENGTH_SHORT).show();
OpenNewVersion(path);
}else{
Toast.makeText(DownloadApk.this,"Error: Server Connection Failed!", Toast.LENGTH_SHORT).show();
}
}
@Override
protected Boolean doInBackground(String... arg0) {
Boolean flag = false;
String sdcardRoot = Environment.getExternalStorageDirectory().getAbsolutePath();
String apkSavePath = sdcardRoot+"/app-debug.apk";
path=apkSavePath;
try {
String server = "103.121.78.28"; //Your download Link
int port = 21;
String user = "ftp";
String pass = "";
FTPClient ftpClient = new FTPClient();
try {
ftpClient.connect(server, port);
ftpClient.login(user, pass);
ftpClient.enterLocalPassiveMode();
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
String remoteFile1 = "app-debug.apk";//apk name
File downloadFile1 = new File(apkSavePath);
OutputStream outputStream1 = new BufferedOutputStream(new FileOutputStream(downloadFile1));
boolean success = ftpClient.retrieveFile(remoteFile1, outputStream1);
outputStream1.close();
Log.d("Update", "doInBackground: "+"before if"+success);
if (success) {
Log.d("Update", "doInBackground: "+"Success"+success);
flag = true;
}
} catch (IOException ex) {
progressdlg.dismiss();
System.out.println("Error: " + ex.getMessage());
flag = false;
ex.printStackTrace();
} finally {
try {
if (ftpClient.isConnected()) {
ftpClient.logout();
ftpClient.disconnect();
progressdlg.dismiss();
}
} catch (IOException ex) {
progressdlg.dismiss();
ex.printStackTrace();
flag = false;
}
}
} catch (Exception e) {
progressdlg.dismiss();
Log.e("TAG", "Update Error: " + e.getMessage());
e.printStackTrace();
flag = false;
}
return flag;
}
}
void OpenNewVersion(String location) {
File apkFile = new File(location);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
Uri uri = FileProvider.getUriForFile(getApplicationContext(), getApplicationContext().getPackageName() + ".provider", apkFile);
intent.setDataAndType(uri, "application/vnd.android.package-archive");
} else {
intent.setDataAndType(Uri.fromFile(apkFile), "application/vnd.android.package-archive");
}
startActivity(intent);;
}
// Function to check and request permission.
public void checkPermission(String permission, int requestCode)
{
if (ContextCompat.checkSelfPermission(DownloadApk.this, permission)
== PackageManager.PERMISSION_DENIED) {
// Requesting the permission
ActivityCompat.requestPermissions(DownloadApk.this,
new String[] { permission },
requestCode);
}
else {
Toast.makeText(DownloadApk.this,
"Permission already granted",
Toast.LENGTH_SHORT)
.show();
}
}
// This function is called when the user accepts or decline the permission.
// Request Code is used to check which permission called this function.
// This request code is provided when the user is prompt for permission.
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super
.onRequestPermissionsResult(requestCode,
permissions,
grantResults);
if (requestCode == STORAGE_PERMISSION_CODE) {
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(DownloadApk.this,
"Storage Permission Granted",
Toast.LENGTH_SHORT)
.show();
}
else {
Toast.makeText(DownloadApk.this,
"Storage Permission Denied",
Toast.LENGTH_SHORT)
.show();
}
}
}
从任何点击监听器调用下载 Apk 类：
new DownloadNewVersion ().execute();