android intent.setType指定浏览本地多种类型的文件

 try {            Intent intent = new Intent(Intent.ACTION_GET_CONTENT);            intent.addCategory(Intent.CATEGORY_OPENABLE);            intent.setType("*/*");            activity.startActivityForResult(intent, 1001);        } catch (ActivityNotFoundException e) {            Log.e(TAG,e.getMessage());        }

这是正常的访问系统自带的文件管理器。但是setType只支持单个setType一般是以下这种(以只查看图片文件为例):

intent.setType("image/*");

然后限制多种类型，百度上一大堆的错误示范（如下）：

intent.setType("image/*;audio/*");

这些是根本无法做到限制的。

正确的做法(比如我要限制只查看ppt ,doc,docx,pptx,pdf等文件)如下：

public static final String DOC = "application/msword";    public static final String DOCX = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";    public static final String XLS = "application/vnd.ms-excel application/x-excel";    public static final String XLSX = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";    public static final String PPT = "application/vnd.ms-powerpoint";    public static final String PPTX = "application/vnd.openxmlformats-officedocument.presentationml.presentation";    public static final String PDF = "application/pdf";  try {                    Intent intent = new Intent(Intent.ACTION_GET_CONTENT);                    intent.addCategory(Intent.CATEGORY_OPENABLE);                    //设置doc,docx,ppt,pptx,pdf 5种类型                    intent.setType("application/msword|application/vnd.openxmlformats-officedocument.wordprocessingml.document" +                            "|application/vnd.ms-powerpoint|application/vnd.openxmlformats-officedocument.presentationml.presentation|application/pdf");                    //在API>=19之后设置多个类型采用以下方式，setType不再支持多个类型                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {                        intent.putExtra(Intent.EXTRA_MIME_TYPES,                                new String[]{DOC,DOCX, PPT, PPTX,PDF});                    }                    startActivityForResult(intent, 1001);                } catch (ActivityNotFoundException e) {                }

然后在跳转到手机自带的文件管理文件后，只有限制的几种类型才是能进行点击/选择。

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