Two Methods for Phonegap to access the local interface through JS

Phonegap development documentation

Java code

1. <Span style = "font-size: 14px;"> package org. apache. cordova. plugin;
3. Import org. apache. cordova. api. CordovaPlugin;
4. Import org. apache. cordova. api. PluginResult;
5. Import org. json. JSONArray;
6. Import org. json. JSONException;
7. Import org. json. JSONObject;
9. /**
10. * This class echoes a string called from JavaScript.
11. */
12. Public class Echo extends CordovaPlugin {
13. @ Override
14. Public boolean execute (String action, JSONArray args, CallbackContext callbackContext) throws JSONException {
15. If (action. equals ("echo ")){
16. String message = args. getString (0 );
17. This. echo (message, callbackContext );
18. Return true;
19. }
20. Return false;
21. }
23. Private void echo (String message, CallbackContext callbackContext ){
24. If (message! = Null & message. length ()> 0 ){
25. CallbackContext. success (message );
26. } Else {
27. CallbackContext. error ("Expected one non-empty string argument .");
28. }
29. }
30. } </Span>

Xml Code

1. <Span style = "font-size: 14px;"> <plugin name = "Echo" value = "org. apache. cordova. plugin. Echo"/> </span>

Js Code

1. <Span style = "font-size: 14px;"> window. echo = function (str, callback) {</span>
2. <Span style = "font-size: 14px;"> <strong> var exec = cordova. require ('cordova/exec '); </strong>
3. <Strong> exec </strong> (callback, function (err ){
4. Callback ('Nothing to echo .');
5. }, "Echo", "echo", [str]);
6. }; </Span>

 

Js Code

1. <Span style = "font-size: 14px;"> window. echo ("echome", function (echoValue ){
2. Alert (echoValue = "echome"); // shocould alert true.
3. }); </Span>

Java code

1. <Span style = "font-size: 14px;"> cordova. getActivity (). runOnUiThread (new Runnable (){
2. Public void run (){
3. ...
4. CallbackContext. success (); // Thread-safe.
5. }
6. });
7. </Span>

Java code

1. <Span style = "font-size: 14px;"> cordova.getthreadpool(.exe cute (new Runnable (){
2. Public void run (){
3. ...
4. CallbackContext. success (); // Thread-safe.
5. }
6. }); </Span>