Android 文件选择的实现代码

打开文件选择器

private void showfilechooser() {
    intent intent = new intent(intent.action_get_content);
    intent.settype("*/*");
    intent.addcategory(intent.category_openable);

    try {
        startactivityforresult( intent.createchooser(intent, "select a file to upload"), file_select_code);
    } catch (android.content.activitynotfoundexception ex) {
        toast.maketext(this, "please install a file manager.",  toast.length_short).show();
    }
}

选择的结果

@override
protected void onactivityresult(int requestcode, int resultcode, intent data)  {
    switch (requestcode) {
        case file_select_code:     
        if (resultcode == result_ok) { 
            // get the uri of the selected file
            uri uri = data.getdata();
            string path = fileutils.getpath(this, uri);
        }          
        break;
    }
super.onactivityresult(requestcode, resultcode, data);
}

fileutils文件

public class fileutils {
    public static string getpath(context context, uri uri) {

        if ("content".equalsignorecase(uri.getscheme())) {
            string[] projection = { "_data" };
            cursor cursor = null;

            try {
                cursor = context.getcontentresolver().query(uri, projection,null, null, null);
                int column_index = cursor.getcolumnindexorthrow("_data");
                if (cursor.movetofirst()) {
                    return cursor.getstring(column_index);
                }
            } catch (exception e) {
                // eat it
            }
        }

        else if ("file".equalsignorecase(uri.getscheme())) {
            return uri.getpath();
        }

        return null;
    }
}

这个很简单。

出处：http://www.cnblogs.com/linlf03/