創建文件的過程:
File file1 = new File(Environment.getExternalStorageDirectory( ).toString()+File.separator +"seantest");//僅創建路徑的File對象
if(!file1.exists()){
file1.mkdir();//如果路徑不存在就先創建路徑
}
File picFile = new File(file1,"test.mp4");//然後再創建路徑和文件的File對象
String absolutePath = picFile.getAbsolutePath();