[英]File API writing file doesn't work Samsung smart tv SDK
I have this javascript code which makes possible writing in a file 我有这个JavaScript代码,可以在文件中写入
{
var fileSystemObj = new FileSystem();
var fileObj = fileSystemObj.openCommonFile(curWidget.id +
‘/testFile.data’, ‘w’);
fileObj.writeLine(‘something to write.’);
fileSystemObj.closeCommonFile(fileObj);
}
but it doesn't work. 但这不起作用。 Doesn't even display any error!
甚至不显示任何错误!
samsung developer forum (you may not see unless you sign in... ) I am quoting it. 三星开发人员论坛(除非您登录否则可能看不到...) 。
case tvKey.KEY_RED:
alert('RED BUTTON!');
alert('CWID: '+curWidget.id);
try {
var fileSystemObj = new FileSystem();
var fileObj = fileSystemObj.openCommonFile(curWidget.id+'/testFile.data','w');
fileObj.writeLine('something to write.');
fileSystemObj.closeCommonFile(fileObj);
} catch (e) {
alert('Error: file handling: '+e);
}
break;
lead to error: alert() : Error: file handling: TypeError: 'null' is not an object (evaluating 'fileObj.writeLine') Reading cause same problem.
导致错误:alert():错误:文件处理:TypeError:'null'不是对象(评估'fileObj.writeLine')读取引起相同的问题。
and solution accepted in that link is: 该链接接受的解决方案是:
I suppose that problem is that you have to create common dir (if does not exist ) at first :
我想这个问题是,您必须首先创建公用目录(如果不存在):
var fileObj = fileSystemObj.openCommonFile(filePath, 'w');
if(!fileObj){
var bValid = fileSystemObj.isValidCommonPath(curWidget.id);
if (!bValid) {
fileSystemObj.createCommonDir(curWidget.id);
}
}
fileObj = fileSystemObj.openCommonFile(filePath, 'w');
fileObj.writeLine('something to write.');
fileSystemObj.closeCommonFile(fileObj);
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