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。