我有以下的Angular JS服務正在訪問cordova media插件。科爾多瓦媒體,如何獲得循環播放回調?
MediaSrv.loadMedia(filePath, mediaSuccess, null, status).then(function(media, status, test, status1){
media.play({ numberOfLoops: 999 });
media.setVolume(volume);
$scope.selectedSounds[index].state = 1;
$scope.selectedSounds[index].mediaInstance = media;
$scope.someSoundsArePlaying = true;
});
我想問一下,我該怎麼辦所選文件的循環再生,可以通過mediaInstance停止功能後停止?
我試過mediaSuccess回撥和狀態回叫,但它不能正常工作。
服務是以下幾點:
'use strict';
angular.module('MaxRelax')
.factory('MediaSrv', function($q, $ionicPlatform, $window){
var service = {
loadMedia: loadMedia,
getStatusMessage: getStatusMessage,
getErrorMessage: getErrorMessage
};
function loadMedia(src, onError, onStatus, onStop){
var defer = $q.defer();
$ionicPlatform.ready(function(){
var mediaSuccess = function(){
if(onStop){onStop();}
};
var mediaError = function(err){
_logError(src, err);
if(onError){onError(err);}
};
var mediaStatus = function(status){
console.log(status);
if(onStatus){onStatus(status);}
};
if($ionicPlatform.is('android')){src = '/android_asset/www/' + src;}
defer.resolve(new $window.Media(src, mediaSuccess, mediaError, mediaStatus));
});
return defer.promise;
}
function _logError(src, err){
console.error('media error', {
code: err.code,
message: getErrorMessage(err.code)
});
}
function getStatusMessage(status){
if(status === 0){return 'Media.MEDIA_NONE';}
else if(status === 1){return 'Media.MEDIA_STARTING';}
else if(status === 2){return 'Media.MEDIA_RUNNING';}
else if(status === 3){return 'Media.MEDIA_PAUSED';}
else if(status === 4){return 'Media.MEDIA_STOPPED';}
else {return 'Unknown status <'+status+'>';}
}
function getErrorMessage(code){
if(code === 1){return 'MediaError.MEDIA_ERR_ABORTED';}
else if(code === 2){return 'MediaError.MEDIA_ERR_NETWORK';}
else if(code === 3){return 'MediaError.MEDIA_ERR_DECODE';}
else if(code === 4){return 'MediaError.MEDIA_ERR_NONE_SUPPORTED';}
else {return 'Unknown code <'+code+'>';}
}
return service;
});
很多,任何幫助非常感謝。
編輯:
項目的播放是通過以下方法處理:
$scope.playSelectedItem = function(index) {
try {
var fileName = $scope.selectedSounds[index].file;
var volume = $scope.selectedSounds[index].defaultVolume;
var filePath = "sounds/" +fileName+".mp3";
console.log(filePath);
MediaSrv.loadMedia(
filePath,
function onError(err){ console.log('onError', MediaSrv.getErrorMessage(err)); },
function onStatus(status){ console.log('onStatus', MediaSrv.getStatusMessage(status)); },
function onStop(){ console.log('onStop'); myMedia.play(); }
).then(function(media){
myMedia = media;
media.play({ numberOfLoops: 999 });
media.setVolume(volume);
$scope.selectedSounds[index].state = 1;
$scope.selectedSounds[index].mediaInstance = media;
$scope.someSoundsArePlaying = true;
});
} catch(e) {
alert(JSON.stringify(e));
console.log(e);
$scope.showAlert("Error", "Error during the playing item");
}
};
停車:
$scope.stopSelectedItem = function(index) {
try {
var leng = 0;
if($scope.selectedSounds[index].state == 1) {
var mediaInstance = $scope.selectedSounds[index].mediaInstance;
mediaInstance.stop();
$scope.selectedSounds[index].state = 0;
$scope.selectedSounds[index].mediaInstance = "";
myMedia.stop();
}
angular.forEach($scope.selectedSounds, function loadMedia(selectedSound, idx){
if($scope.selectedSounds[idx].state == 1) {
leng ++;
}
});
if(leng <= 0) {
$scope.someSoundsArePlaying = false;
console.log("No sound are playing");
}
if(leng > 0) {
$scope.someSoundsArePlaying = true;
console.log("Some sound are playing");
}
console.log("Leng is:");
console.log(leng);
} catch(e) {
alert(JSON.stringify(e));
console.log(e);
$scope.showAlert("Error", "Cannot stop playing of item");
}
};
EDIT2:
我終於解決了它使用簡單的數組中存儲myMedia實例。
$scope.playSelectedItem = function(index) {
try {
var fileName = $scope.selectedSounds[index].file;
var volume = $scope.selectedSounds[index].defaultVolume;
var filePath = "sounds/" +fileName+".mp3";
console.log(filePath);
MediaSrv.loadMedia(
filePath,
function onError(err){ console.log('onError', MediaSrv.getErrorMessage(err)); },
function onStatus(status){ console.log('onStatus', MediaSrv.getStatusMessage(status)); },
function onStop(){
console.log('onStop');
if($scope.selectedSounds[index].state == 1) {
console.log('For index ' +index+' is state '+$scope.selectedSounds[index].state);
myMedia[index].play();
}
}
).then(function(media){
myMedia[index] = media;
media.play({ numberOfLoops: 999 });
media.setVolume(volume);
$scope.selectedSounds[index].state = 1;
$scope.selectedSounds[index].mediaInstance = media;
$scope.someSoundsArePlaying = true;
});
} catch(e) {
alert(JSON.stringify(e));
console.log(e);
$scope.showAlert("Error", "Error during the playing item");
}
};
非常感謝您的回覆,我想你的例子,但如果我想在循環播放多個聲音(例如問題,我想要在同一時間播放六種不同的聲音)。我剛剛更新了關於我用於播放和停止聲音的代碼的問題。 – redrom
嗨,當然,如果你在同一時間播放很多歌曲,他們會做到這一點......;) 我沒有得到你的用例... 你想循環播放六個聲音? Like:s1,s2,s3,s4,s5,s6,s1,s2,s3,s4,s5,s6,s1,s2 ... –
問題是,如果開始播放多個項目的時間只有最後一個(最後一項是循環播放) – redrom