Android – Como saber se os dados móveis está ativo nas configurações (How to tell if ‘Mobile Network Data’ is enabled or disabled)
Android – Abrir tela de configurações para habilitar/desabilitar dados móveis (launch mobile network settings screen)
val intent = Intent() intent.component = ComponentName(“com.android.settings”, “com.android.settings.Settings\$DataUsageSummaryActivity”) startActivity(intent)
Android – DialogFragment setStyle
//1 -> style = DialogFragment.STYLE_NO_TITLE //2 -> style = DialogFragment.STYLE_NO_FRAME //3 -> style = DialogFragment.STYLE_NO_INPUT //4 -> style = DialogFragment.STYLE_NORMAL // — //4 -> theme = android.R.style.Theme_Holo //5 -> theme = android.R.style.Theme_Holo_Light_Dialog //6 -> theme = android.R.style.Theme_Holo_Light //7 -> theme = android.R.style.Theme_Holo_Light_Panel setStyle(DialogFragment.STYLE_NO_TITLE, android.R.style.Theme_Holo_Light_Dialog)
Android – Calculando a intensidade do sinal wifi (Getting WiFi signal strength in Android)
WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE); int numberOfLevels = 5; WifiInfo wifiInfo = wifiManager.getConnectionInfo();Referência int level = WifiManager.calculateSignalLevel(wifiInfo.getRssi(), numberOfLevels); Referência: https://developer.android.com/reference/android/net/wifi/WifiManager.html#calculateSignalLevel%28int,%20int%29
Android – Bloquear a expansão da barra de status programaticamente (prevent status bar expansion)
Creditos: https://stackoverflow.com/questions/25284233/prevent-status-bar-for-appearing-android-modified
Android – Desabilitar o recurso multi window programaticamente (Disable multi window feature programatically)
Normalmente presente em dispositivos da samsung. Para desabilitar o recurdo multi-window basta executar o seguinte comando: // requer permissão: android:name=”android.permission.WRITE_SETTINGS” // 0=desabilitado ; 1=habilitado Settings.System.putInt(contentResolver, “multi_window_enabled”, 0)
Java – Ler um arquivo e codifica-lo para Base64 – Converter File para Base64 (Encode file to Base64)
private String encodeFileToBase64Binary(File file) throws IOException { byte[] bytes = loadFile(file); byte[] encoded = Base64.getEncoder().encode(bytes); String encodedString = new String(encoded); return encodedString; } private byte[] loadFile(File file) throws IOException { byte[] bytes; try (InputStream is = new FileInputStream(file)) { long length = file.length(); if (length > Integer.MAX_VALUE) { throw new IOException(“File to large ” + […]