2011년 1월 25일 화요일

[안드로이드] App에서 MediaScanner 호출하기(Android call MediaScanner in App)

sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://"
+ Environment.getExternalStorageDirectory())));

엄청난 정보로군요!!

완전 찾고 있던 정본데

멋집니다.

자세한 정보는

http://www.androidpub.com/61214

[안드로이드] 자바 스트링 파싱하는 방법 (Java String parsing)

Java String Split Example

/*
Java String split example.
This Java String split example describes how Java String is split into multiple
Java String objects.
*/

public class JavaStringSplitExample{

  public static void main(String args[]){
  /*
  Java String class defines following methods to split Java String object.
  String[] split( String regularExpression )
  Splits the string according to given regular expression.
  String[] split( String reularExpression, int limit )
  Splits the string according to given regular expression. The number of resultant
  substrings by splitting the string is controlled by limit argument.
  */

  /* String to split. */
  String str = "one-two-three";
  String[] temp;

  /* delimiter */
  String delimiter = "-";
  /* given string will be split by the argument delimiter provided. */
  temp = str.split(delimiter);
  /* print substrings */
  for(int i =0; i < temp.length ; i++)
   System.out.println(temp[i]);

  /*
  IMPORTANT : Some special characters need to be escaped while providing them as
  delimiters like "." and "|".
  */

  System.out.println("");
  str = "one.two.three";
  delimiter = "\\.";
  temp = str.split(delimiter);
  for(int i =0; i < temp.length ; i++)
   System.out.println(temp[i]);

  /*
  Using second argument in the String.split() method, we can control the maximum
  number of substrings generated by splitting a string.
  */

  System.out.println("");
  temp = str.split(delimiter,2);
  for(int i =0; i < temp.length ; i++)
   System.out.println(temp[i]);

  }

}

/*
OUTPUT of the above given Java String split Example would be :
one
two
three
one
two
three
one
two.three
*/

출처 : http://www.java-examples.com/java-string-split-example

보다시피, '.' 과 같은 특수한 키의 경우에는 파싱하는 법이 조금 다르다는 것을 알 수 있다.

[안드로이드] 데이트 와 타임 피커 소스(android date picker & time picker source)

package date.picker;

import java.util.Calendar;

import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.TimePickerDialog;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.TextView;
import android.widget.TimePicker;

public class hellodatePicker extends Activity {
   /** Called when the activity is first created. */
private TextView mDateDisplay;
   private Button mPickDate;

   private int mYear;
   private int mMonth;
   private int mDay;

   static final int DATE_DIALOG_ID = 0;

   private TextView mTimeDisplay;
   private Button mPickTime;

   private int mHour;
   private int mMinute;

   static final int TIME_DIALOG_ID = 1;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.main);

   // capture our View elements
   mDateDisplay = (TextView) findViewById(R.id.dateDisplay);
   mPickDate = (Button) findViewById(R.id.pickDate);

   // add a click listener to the button
   mPickDate.setOnClickListener(new View.OnClickListener() {
   public void onClick(View v) {
   showDialog(DATE_DIALOG_ID);
   }
   });

   // get the current date
   final Calendar c = Calendar.getInstance();
   mYear = c.get(Calendar.YEAR);
   mMonth = c.get(Calendar.MONTH);
   mDay = c.get(Calendar.DAY_OF_MONTH);

   // get the current time
   mHour = c.get(Calendar.HOUR_OF_DAY);
   mMinute = c.get(Calendar.MINUTE);

   // display the current date
   updateDateDisplay();

   // capture our View elements
   mTimeDisplay = (TextView) findViewById(R.id.timeDisplay);
   mPickTime = (Button) findViewById(R.id.pickTime);

   // add a click listener to the button
   mPickTime.setOnClickListener(new View.OnClickListener() {
   public void onClick(View v) {
   showDialog(TIME_DIALOG_ID);
   }
   });



   // display the current date
   updateTimeDisplay();
   }

   @Override
   protected Dialog onCreateDialog(int id) {
   switch (id) {
   case DATE_DIALOG_ID:
   return new DatePickerDialog(this,
   mDateSetListener,
   mYear, mMonth, mDay);
   case TIME_DIALOG_ID:
   return new TimePickerDialog(this,
   mTimeSetListener, mHour, mMinute, false);
   }
   return null;
   }

   // updates the date we display in the TextView
   private void updateDateDisplay() {
   mDateDisplay.setText(
   new StringBuilder()
   // Month is 0 based so add 1
   .append(mMonth + 1).append("-")
   .append(mDay).append("-")
   .append(mYear).append(" "));
   }

   // updates the time we display in the TextView
   private void updateTimeDisplay() {
   mTimeDisplay.setText(
   new StringBuilder()
   .append(pad(mHour)).append(":")
   .append(pad(mMinute)));
   }

   // the callback received when the user "sets" the date in the dialog
   private DatePickerDialog.OnDateSetListener mDateSetListener =
   new DatePickerDialog.OnDateSetListener() {

   public void onDateSet(DatePicker view, int year,
   int monthOfYear, int dayOfMonth) {
   mYear = year;
   mMonth = monthOfYear;
   mDay = dayOfMonth;
   updateDateDisplay();
   }
   };

   // the callback received when the user "sets" the time in the dialog
   private TimePickerDialog.OnTimeSetListener mTimeSetListener =
   new TimePickerDialog.OnTimeSetListener() {
   public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
   mHour = hourOfDay;
   mMinute = minute;
   updateTimeDisplay();
   }
   };
   private static String pad(int c) {
   if (c >= 10)
   return String.valueOf(c);
   else
   return "0" + String.valueOf(c);
   }
}

xml file

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"