获取SD卡路劲方法
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String state;
String path;
state = Environment.getExternalStorageState();
if (state.equals(Environment.MEDIA_MOUNTED)){
path = Environment.getExternalStorageDirectory().getAbsolutePath();
}
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* <!--在SDCard中创建与删除文件权限 -->
* <uses-permissioandroid:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
* <!--往SDCard写入数据权限 -->
* <uses-permissionandroid:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
一半使用时候,File newFile = new File("path+/+"filepath"+filename);