在android中，我们可以在应用程序内存中添加打印机插件，还是在资产文件夹中添加jar文件，并尝试从应用程序调用它，以创建移动打印。
我发现
＆GT;仅打印共享应用程序选项。没有谷歌云或任何云打印的任何其他方式。
答案 0 :(得分：1)
这对我有用，我将pdf文件传递给打印机 印刷!!
类WifiPrint扩展Activity {TextView printer_name，gate_way， printer_port; int port = 9100; WifiManager wifi = null; android.net.DhcpInfo d; String gateway_ip =“”;
@Override protected void onCreate（Bundle savedInstanceState）{ super.onCreate（savedInstanceState）; 的setContentView（R.layout.activity_wifi_print）; wifi =（WifiManager） getSystemService（Context.WIFI_SERVICE）; printer_name =（TextView） findViewById（R.id.textView1）; gate_way =（TextView） findViewById（R.id.textView2）; printer_port =（TextView） findViewById（R.id.textView3）; / * de.lohndirekt.print.IppPrintService svc = new IppPrintService（printerURI）; InputStream stream = new BufferedInputStream（new FileInputStream（“image.epl”））; DocFlavor的 flavor = DocFlavor.INPUT_STREAM.AUTOSENSE; Doc myDoc = new SimpleDoc（stream，flavor，null）; DocPrintJob job = svc.createPrintJob（）; job.print（myDoc，null）; * /
}
@Override public boolean onCreateOptionsMenu（Menu menu）{// 给菜单充气;这会将项目添加到操作栏（如果存在）。 getMenuInflater（）。inflate（R.menu.wifi_print，menu）;返回true; }
public void wifisettings（View v）{startActivityForResult（new 意图（ android.provider.Settings.ACTION_WIFI_SETTINGS），0）; }
public void connectSocket（View v）{
/ * Uri filepath = Uri.parse（“android.resource：//”+ getPackageName（）+“/”+ R.raw.pdfsample）; Toast.makeText（this，filepath.getPath（），Toast.LENGTH_LONG）。show（）; * / ClientThread clientThread = new ClientThread（ “”）;线程clientstartThread = new 螺纹（clientThread）; clientstartThread.start（）; }public String intToIp（int i）{return（（i＆amp; 0xFF）+“。”+（（i＆gt;＆gt; 8） ＆安培; 0xFF）+“。” +（（i>＆gt;＆gt; 16）＆amp; 0xFF） +“。” +（（i>＆gt;＆gt; 24）＆amp; 0xFF））; }
@Override protected void onActivityResult（int requestCode，int resultCode，Intent data）{// TODO自动生成的方法存根
super.onActivityResult(requestCode, resultCode, data); if（requestCode == 0）{WifiInfo wifiinfo = wifi.getConnectionInfo（）; d = wifi.getDhcpInfo（）;
printer_name.setText("Name:" + wifiinfo.getSSID()); gateway_ip =intToIp（d.gateway）; gate_way.setText（“Printer Ip：”+ gateway_ip）; printer_port.setText（“Port：”+ port）;
} }public File createFileFromInputStream（InputStream inputStream）{
try{ File f = new File("/sdcard/testpdf.pdf"); OutputStream outputStream = new FileOutputStream(f); byte buffer[] = new byte[1024]; int length = 0; while((length=inputStream.read(buffer)) > 0) { outputStream.write(buffer,0,length); } outputStream.close(); inputStream.close(); return f; }catch (IOException e) { //Logging exception } return null; }class ClientThread实现Runnable {String filepath =“”; BufferedInputStream bis = null; FileInputStream fis;
Socket socket; public ClientThread(String filename) { filepath = filename; } @Override public void run() { // TODO Auto-generated method存根尝试{
InputStream in = getResources（）。openRawResource（R.raw.pdfsample）; createFileFromInputStream（IN）; 文件pdfFile =新文件（“/ sdcard / testpdf.pdf”）; byte [] mybytearray = new byte [（int）pdfFile.length（）]; socket = new Socket（gateway_ip，port）; runOnUiThread（new Runnable（）{
@覆盖 public void run（）{ // TODO自动生成的方法存根 如果（socket.isConnected（））{ Toast.makeText（WifiPrint.this， “Socket Connected”， Toast.LENGTH_LONG）.show（）;
}
} }）;
fis = new FileInputStream（pdfFile）; bis = new BufferedInputStream（fis）; bis.read（mybytearray，0，mybytearray.length）; OutputStream os = socket.getOutputStream（）; os.write（mybytearray，0，mybytearray.length）; os.flush（）;if (bis != null) { bis.close(); os.close(); socket.close(); fis.close(); } } catch (final UnknownHostException e) { // TODO Auto-generated catch block runOnUiThread(new Runnable() { @Override public void run() { // TODO Auto-generated method stub Toast.makeText(WifiPrint.this, "UnHost Exceptions" + e.getMessage(), Toast.LENGTH_LONG).show(); } }); } catch (final IOException e) { // TODO Auto-generated catch block runOnUiThread(new Runnable() { @Override public void run() { // TODO Auto-generated method stub Toast.makeText(WifiPrint.this, "Io Exceptions" + e.getMessage(), Toast.LENGTH_LONG).show(); } }); } finally { try { if (bis != null) { bis.close(); socket.close(); fis.close(); } } catch (final IOException e) { // TODO Auto-generated catch block runOnUiThread(new Runnable() { @Override public void run() { // TODO Auto-generated method stub Toast.makeText( WifiPrint.this, "Io Exeption in Closing Socket" + e.getMessage(), Toast.LENGTH_LONG) .show(); } }); } } }}
}
在清单文件中：只需添加：
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" /> <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <uses-feature android:name="android.hardware.wifi" />
答案 1 :(得分：0)
是!!!
在Android 4.4（API级别19）及更高版本中，该框架提供直接从Android应用程序打印图像和文档的服务。
/**
* To print image / photo
*/
private void printPhoto() {
// Get a PrintHelper instance
PrintHelper photoPrinter = new PrintHelper(this);
photoPrinter.setScaleMode(PrintHelper.SCALE_MODE_FIT);
// get image from mipmap folder
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher);
// provide job name (which will be displayed in the print queue) and bitmap
photoPrinter.printBitmap("droids.jpg - test print", bitmap);
}