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Add Android KitKat support

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This commit is contained in:
Sebastián Katzer
2013-12-11 15:49:00 +01:00
parent c039585469
commit cf76737e21
4 changed files with 100 additions and 8 deletions
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86
src/android/KitKatPrinter.java
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@@ -21,19 +21,37 @@
package de.appplant.cordova.plugin.printer;
import org.apache.cordova.CallbackContext;
import org.apache.cordova.CordovaPlugin;
import org.apache.cordova.PluginResult;
import org.json.JSONArray;
import org.json.JSONException;
import android.annotation.TargetApi;
import android.content.Context;
import android.os.Build;
import android.print.PrintAttributes;
import android.print.PrintDocumentAdapter;
import android.print.PrintManager;
import android.view.View;
import android.webkit.WebView;
import android.webkit.WebViewClient;
@TargetApi(19)
public class KitKatPrinter extends CordovaPlugin {
@Override
public boolean execute (String action, JSONArray args, CallbackContext callbackContext) throws JSONException {
// Es soll überprüft werden, ob ein Dienst zum Ausdrucken von Inhalten zur Verfügung steht
if ("isServiceAvailable".equals(action)) {
if (action.equalsIgnoreCase("isServiceAvailable")) {
isServiceAvailable(callbackContext);
return true;
}
// Etwas soll ausgedruckt werden
if ("print".equals(action)) {
if (action.equalsIgnoreCase("print")) {
print(args, callbackContext);
return true;
@@ -47,7 +65,7 @@ public class KitKatPrinter extends CordovaPlugin {
* Überprüft, ob ein Drucker zur Verfügung steht.
*/
private void isServiceAvailable (CallbackContext ctx) {
Boolean supported = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;;
Boolean supported = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
PluginResult result = new PluginResult(PluginResult.Status.OK, supported);
ctx.sendPluginResult(result);
@@ -57,6 +75,68 @@ public class KitKatPrinter extends CordovaPlugin {
* Druckt den HTML Content aus.
*/
private void print (final JSONArray args, CallbackContext ctx) {
final KitKatPrinter self = this;
cordova.getActivity().runOnUiThread( new Runnable() {
public void run() {
String content = args.optString(0, "<html></html>");
WebView controller = self.getPrintController();
self.loadContentIntoPrintController(content, controller);
self.startPrinterApp(controller);
}
});
}
/**
* Erstellt den Print-View.
*/
private WebView getPrintController () {
WebView webview = new WebView(cordova.getActivity());
webview.setVisibility(View.INVISIBLE);
webview.getSettings().setJavaScriptEnabled(false);
return webview;
}
/**
* Lädt den zu druckenden Content in ein WebView, welcher vom Drucker ausgedruckt werden soll.
*/
private void loadContentIntoPrintController (String content, WebView webview) {
//Set base URI to the assets/www folder
String baseURL = webView.getUrl();
baseURL = baseURL.substring(0, baseURL.lastIndexOf('/') + 1);
webview.loadDataWithBaseURL(baseURL, content, "text/html", "UTF-8", null);
}
/**
* Öffnet die Printer App, damit der Content ausgedruckt werden kann.
*/
private void startPrinterApp (WebView webview) {
webview.setWebViewClient (new WebViewClient() {
public boolean shouldOverrideUrlLoading (WebView view, String url) {
return false;
}
public void onPageFinished (WebView webview, String url) {
// Get a PrintManager instance
PrintManager printManager = (PrintManager) cordova.getActivity()
.getSystemService(Context.PRINT_SERVICE);
// Get a print adapter instance
PrintDocumentAdapter printAdapter = webView.createPrintDocumentAdapter();
// Get a print builder instance
PrintAttributes.Builder builder = new PrintAttributes.Builder();
builder.setMinMargins(PrintAttributes.Margins.NO_MARGINS);
// Create a print job with name and adapter instance
printManager.print("Print Document", printAdapter, builder.build());
}
});
}
}