PhoneGap iOS plugin development and unlimited background operation solution

1. First Develop plugin: because I need to do before the project (according to the situation)

Create a new obj C file in the project's plugins file. Such as

Demo, this will produce two files of Demo.h and DEMO.M.

The. h file is primarily defined by a number of methods, similar to interfaces in Java. (to inherit Cdvplugin)

The. m file is an implementation of the H folder, which enters the appropriate function when the plug-in executes, keeping in mind that when the function is easy to CEO, Uithread is in a blocked state. No, we can start a thread in the function, the function of the start line is as follows:

Java code

1. Nsthread *thread=[[nsthread alloc]initwithtarget:selft selector:@selector (doinbackground:) object:argumetns];
2. Doinbackground is the method to be executed in the new thread
3. [Thread start];

Nsthread *thread=[[nsthread alloc]initwithtarget:selft selector: @selector (doinbackground:) object:argumetns];// Doinbackground is the method to be executed in the new thread [thread start];

I have a few simple code here:

Java code

1. #Import<foundation/foundation.h>
2. #Import<cordova/cdvplugin.h>
3. @Interface Displaynumber:cdvplugin
4. -(void) Setnumber: (cdvinvokeurlcommand) command;
5. @end;

#import <Foundation/Foundation.h> #import <Cordova/CDVPlugin.h> @Interface displaynumber:cdvplugin-( void) Setnumber: (cdvinvokeurlcommand) command; @end;

2. Enable plugins in CONFIG.

Add <feature name= "Demo" >

<param name= ' ios-package ' value= ' Demo '/>

</feature>

Here's a note: value is the class name we defined earlier, the name in the face feature refers to the name of the plug-in to be called before we write JS, if you do not understand, write a name written in the same line. (That's what I did)

3 Edit Write Plugin js

Java code

1. var demo=function () {
3. }
4. demo.prototype={
5. Method:function (fun1,fun2,params) {cordova.exec (fun1//Successful call, FUN2, ' plug-in name ', ' method name of plugin ', [params//parameter array]);
6. }
7. }

var demo=function () {   }  demo.prototype={  method:function (fun1,fun2,params) {cordova.exec (called when fun1//succeeds, fun2, ' plugin name ', ' method name of plugin ', [params//parameter array]);}}

If we want to use the demo plugin, we can simply write the new demo (). method (Fun1,fun2,params);//Very simple

Note: We can also in the plugin JS in the new Demo () to a variable, we will not call again when the new one.

About the solution of unlimited operation in the background (there are many solutions on the web)

1. info.plist file added: Required Background modes (is an array form of the built value), after the item0 of the value set to become the APP plays audio or streams audio/video using A Irplay.

2. Locate MainViewController.h under the Classes folder,

Java code

2. #Import <Cordova/CDVViewController.h>
4. #Import <Cordova/CDVCommandDelegateImpl.h>
6. #Import <Cordova/CDVCommandQueue.h>
8. #Import <AVFoundation/AVFoundation.h>
12. @interface mainviewcontroller:cdvviewcontroller{
14. Avaudioplayer *audioplayer;
16. }
18. @property (nonatomic) avaudioplayer * audioplayer;
20. @end
24. @interface Maincommanddelegate:cdvcommanddelegateimpl
26. @end
30. @interface Maincommandqueue:cdvcommandqueue
32. @end

#import <Cordova/CDVViewController.h> #import <Cordova/CDVCommandDelegateImpl.h> #import <cordova/ cdvcommandqueue.h> #import <AVFoundation/AVFoundation.h> @interface mainviewcontroller:cdvviewcontroller{    Avaudioplayer *audioplayer;} @property (nonatomic) avaudioplayer * audioplayer; @end @interface maincommanddelegate: Cdvcommanddelegateimpl@end@interface Maincommandqueue:cdvcommandqueue@end

Then modify the mainviewcontroller.m file to find the Viewdidload method, modified to:

Java code

2. -(void) Viewdidload
4. {
6. [Super Viewdidload];
8. additional setup after loading the view from its nib.
10. dispatch_queue_t dispatchqueue = Dispatch_get_global_queue (Dispatch_queue_priority_default, 0);
12. Dispatch_async (Dispatchqueue, ^ (void) {
14. Nserror *audiosessionerror = nil;
16. Avaudiosession *audiosession = [Avaudiosession sharedinstance];
18. if ([Audiosession setcategory:avaudiosessioncategoryplayback Error:&audiosessionerror]) {
20. NSLog (@"successfully set the audio session.");
22. } Else {
24. NSLog (@"Could not set the audio session");
26. }
32. NSBundle *mainbundle = [NSBundle mainbundle];
34. NSLog (@"%@", Mainbundle);
36. NSString *filepath = [Mainbundle pathforresource:@"Love" oftype:@"wav"];
38. NSData *filedata = [NSData Datawithcontentsoffile:filepath];
40. Nserror *error = nil;
42. NSLog (@"aa%@", FilePath);
44. Self.audioplayer = [[Avaudioplayer alloc] Initwithdata:filedata error:&error];
48. if (self.audioplayer! = nil) {
50. Self.audioPlayer.delegate = self;
54. [Self.audioplayer setnumberofloops:-1];
56. if ([Self.audioplayer preparetoplay] && [Self.audioplayer Play]) {
58. NSLog (@"successfully started playing ...");
60. } Else {
62. NSLog (@"Failed to play.");
64. }
66. } Else {
68. NSLog (@"Failed to play.");
70. }
72. });
76. }

-(void) viewdidload{[Super Viewdidload];    Do any additional setup after loading the view from its nib.    dispatch_queue_t dispatchqueue = dispatch_get_global_queue (dispatch_queue_priority_default, 0);        Dispatch_async (dispatchqueue, ^ (void) {nserror *audiosessionerror = nil;        Avaudiosession *audiosession = [Avaudiosession sharedinstance]; if ([Audiosession setcategory:avaudiosessioncategoryplayback Error:&audiosessionerror]) {NSLog (@ "Successful Ly set the audio session. ");        else {NSLog (@ "Could not set the audio session");        } nsbundle *mainbundle = [NSBundle mainbundle];        NSLog (@ "%@", Mainbundle);        NSString *filepath = [Mainbundle pathforresource:@ "Love" oftype:@ "wav"];        NSData *filedata = [NSData Datawithcontentsoffile:filepath];        Nserror *error = nil;        NSLog (@ "aa%@", FilePath); Self.audioplayer = [[Avaudioplayer alloc] Initwithdata:filedata error:&error];                        if (self.audioplayer! = nil) {self.audioPlayer.delegate = self;            [Self.audioplayer setnumberofloops:-1]; if ([Self.audioplayer preparetoplay] && [Self.audioplayer Play]) {NSLog (@ "successfully started play            ing ... "); } else {NSLog (@ "Failed to play.");}} else {NSLog (@ "Failed to play.");});

Description: The Love.wav file is a file under other sources.

Then modify the APPDELEGATE.M file, new method:

Java code

2. -(void) Applicationdidenterbackground: (uiapplication *) application{
4. [Nsrunloop Currentrunloop];
6. //
8. UIApplication *app=[uiapplication Sharedapplication];
10. __block Uibackgroundtaskidentifier Bgtask;
12. Bgtask=[app beginbackgroundtaskwithexpirationhandler:^{
14. Dispatch_async (Dispatch_get_main_queue (), ^{
16. if (bgtask!=uibackgroundtaskinvalid) {
18. Bgtask=uibackgroundtaskinvalid;
20. //            }
22. //        });
24. //    }];
26. //
28. Dispatch_async (Dispatch_get_global_queue (dispatch_queue_priority_default, 0), ^{
30. Dispatch_async (Dispatch_get_main_queue (), ^{
32. if (bgtask!=uibackgroundtaskinvalid) {
34. Bgtask=uibackgroundtaskinvalid;
36. //           }
38. //       });
40. //   });
42. //
44. [[UIApplication sharedapplication] setkeepalivetimeout:600 handler:^{
46. NSLog (@ "KeepAlive");
48. //    }];
50. Mainviewcontroller *mvc=[[mainviewcontroller alloc] init];
52. [MVC viewdidload];
56. }

-(void) Applicationdidenterbackground: (uiapplication *) application{//[Nsrunloop currentrunloop];////uiapplication *app=[uiapplication sharedapplication];//__block UIBackgroundTaskIdentifier bgtask;//Bgtask=[app beginbackgroundtaskwithexpirationhandler:^{//Dispatch_async (Dispatch_get_main_queue (), ^{        if (bgtask!=uibackgroundtaskinvalid) {//bgtask=uibackgroundtaskinvalid;//}// });//}];////Dispatch_async (Dispatch_get_global_queue (dispatch_queue_priority_default, 0), ^{//dispatch_ Async (Dispatch_get_main_queue (), ^{//if (bgtask!=uibackgroundtaskinvalid) {//BGTASK=UIBACKGROUNDTA skinvalid;//}//});///[[UIApplication sharedapplication] setkeepalivetimeout:600 Handler    : ^{//NSLog (@ "KeepAlive");/}];    Mainviewcontroller *mvc=[[mainviewcontroller alloc] init]; [MVC viewdidload];} 

There are also many online, found under the simulator can be long-running, but under the real-time machine does not run. Find it a bit better to play a silent audio file for a long time.

-------------------If there is any bad place, please advise.

PhoneGap iOS plugin development and unlimited background operation solution