[英]Gluon Mobile iOS Audio Player
由于JavaFx Media尚未移植到移动平台,任何人都可以帮我使用原生iOS APi播放声音mp3文件,该文件将存储在我的胶子项目的main / resources文件夹中。
While on Android we can easily add native API to the Android folders of a Gluon project (check this solution for using native Media on Android), the use of native code (Objetive-C) with the Media API on iOS folders is not enough, since it has to be compiled, and the compiled files have to be included into the ipa. 在Android上,我们可以轻松地将原生API添加到Gluon项目的Android文件夹中(检查此解决方案是否在Android上使用本机媒体),在iOS文件夹上使用本机代码(Objetive-C)与Media API是不够的,因为它必须被编译,并且编译的文件必须包含在ipa中。
Currently, Charm Down is doing this for a bunch of services. 目前, Charm Down正在为一系列服务做这件事。 If you have a look at the
build.gradle
script for iOS , it includes the xcodebuild
task to compile and build the native library libCharm.a
, that later should be included in any iOS project using any of those services. 如果您查看iOS的
build.gradle
脚本,它包含xcodebuild
任务来编译和构建本机库libCharm.a
,以后应该包含在使用任何这些服务的任何iOS项目中。
My suggestion will be cloning Charm Down, and providing a new service: AudioService
, with some basic methods like: 我的建议是克隆Charm Down,并提供一项新服务:
AudioService
,其中包括一些基本方法:
public interface AudioService {
void play(String audioName);
void pause();
void resume();
void stop();
}
This service will be added to the Platform
class: 此服务将添加到
Platform
类:
public abstract class Platform {
...
public abstract AudioService getAudioService();
}
and you should provide implementations for Desktop (empty), Android (like the one here ) and iOS. 你应该提供桌面(空),Android(像这里的那个)和iOS的实现。
IOS implementation - Java IOS实现 - Java
You will have to add this to the IOSPlatform
class: 您必须将此添加到
IOSPlatform
类:
public class IOSPlatform extends Platform {
...
@Override
public AudioService getAudioService() {
if (audioService == null) {
audioService = new IOSAudioService();
}
return audioService;
}
}
and create the IOSAudioService
class: 并创建
IOSAudioService
类:
public class IOSAudioService implements AudioService {
@Override
public void play(String audioName) {
CharmApplication.play(audioName);
}
@Override
public void pause() {
CharmApplication.pause();
}
@Override
public void resume() {
CharmApplication.resume();
}
@Override
public void stop() {
CharmApplication.stop();
}
}
Finally, you will have to add the native calls in CharmApplication
: 最后,您必须在
CharmApplication
添加本机调用:
public class CharmApplication {
static {
System.loadLibrary("Charm");
_initIDs();
}
...
public static native void play(String audioName);
public static native void pause();
public static native void resume();
public static native void stop();
}
IOS implementation - Objective-C IOS实施 - 目标-C
Now, on the native folder, on CharmApplication.m
, add the implementation of those calls: 现在,在本机文件夹的
CharmApplication.m
,添加这些调用的实现:
#include "CharmApplication.h"
...
#include "Audio.h"
// Audio
Audio *_audio;
JNIEXPORT void JNICALL Java_com_gluonhq_charm_down_ios_CharmApplication_play
(JNIEnv *env, jclass jClass, jstring jTitle)
{
NSLog(@"Play audio");
const jchar *charsTitle = (*env)->GetStringChars(env, jTitle, NULL);
NSString *name = [NSString stringWithCharacters:(UniChar *)charsTitle length:(*env)->GetStringLength(env, jTitle)];
(*env)->ReleaseStringChars(env, jTitle, charsTitle);
_audio = [[Audio alloc] init];
[_audio playAudio:name];
return;
}
JNIEXPORT void JNICALL Java_com_gluonhq_charm_down_ios_CharmApplication_pause
(JNIEnv *env, jclass jClass)
{
if (_audio)
{
[_audio pauseAudio];
}
return;
}
JNIEXPORT void JNICALL Java_com_gluonhq_charm_down_ios_CharmApplication_resume
(JNIEnv *env, jclass jClass)
{
if (_audio)
{
[_audio resumeAudio];
}
return;
}
JNIEXPORT void JNICALL Java_com_gluonhq_charm_down_ios_CharmApplication_stop
(JNIEnv *env, jclass jClass)
{
if (_audio)
{
[_audio stopAudio];
}
return;
}
and create the header file Audio.h
: 并创建头文件
Audio.h
:
#import <AVFoundation/AVFoundation.h>
#import <UIKit/UIKit.h>
@interface Audio :UIViewController <AVAudioPlayerDelegate>
{
}
- (void) playAudio: (NSString *) audioName;
- (void) pauseAudio;
- (void) resumeAudio;
- (void) stopAudio;
@end
and the implementation Audio.m
. 和实现
Audio.m
。 This one is based on this tutorial : 这个基于本教程 :
#include "Audio.h"
#include "CharmApplication.h"
@implementation Audio
AVAudioPlayer* player;
- (void)playAudio:(NSString *) audioName
{
NSString* fileName = [audioName stringByDeletingPathExtension];
NSString* extension = [audioName pathExtension];
NSURL* url = [[NSBundle mainBundle] URLForResource:[NSString stringWithFormat:@"%@",fileName] withExtension:[NSString stringWithFormat:@"%@",extension]];
NSError* error = nil;
if(player)
{
[player stop];
player = nil;
}
player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];
if(!player)
{
NSLog(@"Error creating player: %@", error);
return;
}
player.delegate = self;
[player prepareToPlay];
[player play];
}
- (void)pauseAudio
{
if(!player)
{
return;
}
[player pause];
}
- (void)resumeAudio
{
if(!player)
{
return;
}
[player play];
}
- (void)stopAudio
{
if(!player)
{
return;
}
[player stop];
player = nil;
}
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
{
NSLog(@"%s successfully=%@", __PRETTY_FUNCTION__, flag ? @"YES" : @"NO");
}
- (void)audioPlayerDecodeErrorDidOccur:(AVAudioPlayer *)player error:(NSError *)error
{
NSLog(@"%s error=%@", __PRETTY_FUNCTION__, error);
}
@end
Build the native library 构建本机库
Edit the build.gradle
for the iOS module, and add the Audio service to the xcodebuild
task: 编辑iOS模块的
build.gradle
,并将Audio服务添加到xcodebuild
任务:
def nativeSources = ["$project.projectDir/src/main/native/CharmApplication.m",
...,
"$project.projectDir/src/main/native/Audio.m"]
...
def compileOutputs = [
"$project.buildDir/native/$arch/CharmApplication.o",
"$project.buildDir/native/$arch/Charm.o",
...,
"$project.buildDir/native/$arch/Audio.o"]
Build the project 建立项目
Save the project, and from the root of the Charm Down project, on command line run: 保存项目,并从Charm Down项目的根目录,在命令行运行:
./gradlew clean build
If everything is fine, you should have: 如果一切都很好,你应该:
Gluon Project 胶子项目
With those dependencies and the native library, you will be able to create a new Gluon Project, and add the jars as local dependencies (to the libs
folder). 使用这些依赖项和本机库,您将能够创建一个新的Gluon项目,并将jar作为本地依赖项添加到
libs
文件夹中。
As for the native library, it should be added to this path: src/ios/jniLibs/libCharm.a
. 对于本机库,应将其添加到此路径:
src/ios/jniLibs/libCharm.a
。
Update the build.gradle
script: 更新
build.gradle
脚本:
repositories {
flatDir {
dirs 'libs'
}
jcenter()
...
}
dependencies {
compile 'com.gluonhq:charm-glisten:3.0.0'
compile 'com.gluonhq:charm-down-common:2.1.0-SNAPSHOT'
compile 'com.gluonhq:charm-glisten-connect-view:3.0.0'
iosRuntime 'com.gluonhq:charm-glisten-ios:3.0.0'
iosRuntime 'com.gluonhq:charm-down-ios:2.1.0-SNAPSHOT'
}
On your View, retrieve the service and provide some basic UI to call the play("audio.mp3")
, pause()
, resume()
and stop()
methods: 在View上,检索服务并提供一些基本UI来调用
play("audio.mp3")
, pause()
, resume()
和stop()
方法:
private boolean pause;
public BasicView(String name) {
super(name);
AudioService audioService = PlatformFactory.getPlatform().getAudioService();
final HBox hBox = new HBox(10,
MaterialDesignIcon.PLAY_ARROW.button(e -> audioService.play("audio.mp3")),
MaterialDesignIcon.PAUSE.button(e -> {
if (!pause) {
audioService.pause();
pause = true;
} else {
audioService.resume();
pause = false;
}
}),
MaterialDesignIcon.STOP.button(e -> audioService.stop()));
hBox.setAlignment(Pos.CENTER);
setCenter(new StackPane(hBox));
}
Finally, place an audio file like audio.mp3
, under src/ios/assets/audio.mp3
, build and deploy to iOS. 最后,在
src/ios/assets/audio.mp3
下放置audio.mp3
等音频文件,构建并部署到iOS。
Hopefully, this API will be provided by Charm Down any time soon. 希望这个API将很快由Charm Down提供。 Also if you come up with a nice implementation, feel free to share it and create a Pull Request .
此外,如果您想出一个很好的实现,请随意共享它并创建一个Pull Request 。
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