How to set default open with(dialog) option to my android app? -

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i have file in devise called test.csv. when click on file opened through app.how set default open with(dialog) option app in android?

enter image description here

above sample dailog.how add app dialog list?

i think may want read csv file. csv file path. see following. 

public static void readcsv(file file) {     bufferedreader reader = null;     stringbuilder stringbuilder = new stringbuilder();     try {         inputstreamreader isr = new inputstreamreader(new fileinputstream(file));// csv file         reader = new bufferedreader(isr);         string line = null; // every time read 1 line         while ((line = reader.readline()) != null) {             stringbuilder.append(line);             stringbuilder.append("\n");         }     } catch (exception e) {         e.printstacktrace();     } {         try {             reader.close();         } catch (ioexception e) {             e.printstacktrace();         }     }  }

the stringbuilder.tostring() csv file's content. sorry english.


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