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    <p>AFAIK, it is possible if you have root access, the process is like following:</p> <ol> <li>Your app is in <code>/system/app</code> folder (as a system app)</li> <li><p>You need following permissions:</p> <pre><code>android.permission.INSTALL_PACKAGES android.permission.DELETE_PACKAGES android.permission.CLEAR_APP_CACHE android.permission.WRITE_EXTERNAL_STORAGE android.permission.MOUNT_UNMOUNT_FILESYSTEMS </code></pre></li> <li><p>Your app must be signed with system signature</p> <pre><code>java -jar signapk.jar platform.x509.pem platform.pk8 helloworld.apk hello.apk </code></pre></li> <li><p>Check for updates in a background thread and download updated .apk file to a temporary place, e.g <code>apk_path</code></p></li> <li><p>Execute <code>pm install apk_path</code> command programmatically, below is a snippet:</p> <pre><code>public String silentInstallation(String apkPath) { String[] args = { "pm", "install", "-r", apkPath }; ProcessBuilder processBuilder = new ProcessBuilder(args); Process process = null; InputStream errIs = null; InputStream inIs = null; try { ByteArrayOutputStream baos = new ByteArrayOutputStream(); int read = -1; process = processBuilder.start(); errIs = process.getErrorStream(); while ((read = errIs.read()) != -1) { baos.write(read); } baos.write('\n'); inIs = process.getInputStream(); while ((read = inIs.read()) != -1) { baos.write(read); } byte[] data = baos.toByteArray(); result = new String(data); } catch (IOException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } finally { try { if (errIs != null) { errIs.close(); } if (inIs != null) { inIs.close(); } } catch (IOException e) { e.printStackTrace(); } if (process != null) { process.destroy(); } } return result; } </code></pre></li> </ol> <p>Hope it helps.</p>
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    1. POIs it possible to update an android app while it is running and then reload it again
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    1. COedited my answer, yes you must make sure your app is in "/system/app".
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    2. COyes, I've stated that.
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    3. COWould be nice if you could format your code a bit better. Thanks.
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