ohmlok: February 2013

Thursday, February 7, 2013

Dynamic gradient in android

Step One:- create a class
import android.graphics.drawable.GradientDrawable;

public class DrawableGradient extends GradientDrawable {
public DrawableGradient(int[] colors, int cornerRadius) {
super(GradientDrawable.Orientation.BR_TL, colors);

try {
this.setShape(GradientDrawable.RECTANGLE);
this.setGradientType(GradientDrawable.RECTANGLE);
this.setCornerRadius(cornerRadius);
} catch (Exception e) {
e.printStackTrace();
}
}

public DrawableGradient SetTransparency(int transparencyPercent) {
this.setAlpha(255 - ((255 * transparencyPercent) / 100));

return this;
}
}

step 2 : use this
TextView.setBackgroundDrawable(new DrawableGradient(new int[] {
0xFFFF0000, 0xFF800000, 0xFF000000 }, 0).SetTransparency(10));

email validation in android

protected final Pattern EMAIL_ADDRESS_PATTERN = Pattern
.compile("[a-zA-Z0-9\\+\\.\\_\\%\\-\\+]{1,256}" + "\\@"
+ "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,64}" + "(" + "\\."
+ "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,25}" + ")+");

/**
* for email validation
*
* @param str
* = string for validation
* @return true if validation is correct
*/
public boolean emailValidation(String str) {
if (str.equals("")
|| EMAIL_ADDRESS_PATTERN.matcher(str).matches() == false)
return false;
else
return true;
}

Android Custom Calendar

Android Custom Calendar

import java.text.DateFormatSymbols;
import java.text.Format;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

import android.app.Dialog;
import android.content.Context;
import android.graphics.Color;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

/**
* @author Sudhi.S
*
*/
public class UDSCalender extends Dialog implements
android.view.View.OnClickListener {

private TextView txt1 = null;
private TextView txt = null;
private GridView gd = null;
private Calendar calendar = null;

public UDSCalender(Context context) {

super(context, android.R.style.Theme_Panel);

calendar = Calendar.getInstance();
LinearLayout mreal = new LinearLayout(getContext());
LinearLayout.LayoutParams mrealp = new LinearLayout.LayoutParams(-1, -2);
mreal.setBackgroundResource(R.drawable.abs__dialog_full_holo_light);
mreal.setOrientation(LinearLayout.VERTICAL);
View vo = new View(getContext());
vo.setBackgroundColor(Color.parseColor("#ffffbb33"));
vo.setLayoutParams(new LinearLayout.LayoutParams(-1, 2));
mreal.addView(vo);
TextView txt = new TextView(getContext());
txt.setLayoutParams(new LinearLayout.LayoutParams(-1, -2));
txt.setText("Calendar");
txt.setPadding(0, 5, 0, 5);

txt.setTextColor(Color.BLACK);
txt.setGravity(Gravity.CENTER);
mreal.addView(txt);
View vo1 = new View(getContext());
vo1.setBackgroundColor(Color.parseColor("#ffffbb33"));
vo1.setLayoutParams(new LinearLayout.LayoutParams(-1, 2));
mreal.addView(vo1);
addButton(mreal);
View vo3 = new View(getContext());
vo3.setBackgroundColor(Color.parseColor("#ffffbb33"));
vo3.setLayoutParams(new LinearLayout.LayoutParams(-1, 2));
mreal.addView(vo3);
addCalender(mreal);
View vo2 = new View(getContext());
vo2.setBackgroundColor(Color.parseColor("#ffffbb33"));
vo2.setLayoutParams(new LinearLayout.LayoutParams(-1, 2));
mreal.addView(vo2);
this.setCancelable(true);
this.addContentView(mreal, mrealp);

}
ArrayList<Date> dater=null;

public void setArrayList(ArrayList<Date> dater)
{
this. dater=dater;
}
public String getMonth(int month) {
return new DateFormatSymbols().getMonths()[month];
}

private void addButton(LinearLayout mreal) {

int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH);
LinearLayout ll = new LinearLayout(getContext());
ll.setLayoutParams(new LinearLayout.LayoutParams(-1, -2));
ll.setOrientation(LinearLayout.HORIZONTAL);
ImageView img = new ImageView(getContext());
img.setImageResource(android.R.drawable.btn_minus);
img.setLayoutParams(new LinearLayout.LayoutParams(-1, -2, 1.2f));
img.setOnClickListener(this);
img.setTag("0");
ll.addView(img);
txt = new TextView(getContext());
txt.setLayoutParams(new LinearLayout.LayoutParams(-1, -2, 1));

txt.setText(year + "");

txt.setTextColor(Color.BLACK);
txt.setGravity(Gravity.CENTER);
ll.addView(txt);
ImageView img1 = new ImageView(getContext());
img1.setImageResource(android.R.drawable.btn_plus);
img1.setLayoutParams(new LinearLayout.LayoutParams(-1, -2, 1.2f));
img1.setTag("1");
img1.setOnClickListener(this);
ll.addView(img1);

ImageView img3 = new ImageView(getContext());
img3.setImageResource(android.R.drawable.btn_minus);
img3.setLayoutParams(new LinearLayout.LayoutParams(-1, -2, 1.2f));
img3.setTag("2");
img3.setOnClickListener(this);
ll.addView(img3);
txt1 = new TextView(getContext());
txt1.setLayoutParams(new LinearLayout.LayoutParams(-1, -2, 1));
txt1.setText(getMonth(month));
txt1.setTag(month);
txt1.setTextColor(Color.BLACK);
txt1.setGravity(Gravity.CENTER);
ll.addView(txt1);
ImageView img4 = new ImageView(getContext());
img4.setImageResource(android.R.drawable.btn_plus);
img4.setLayoutParams(new LinearLayout.LayoutParams(-1, -2, 1.2f));
img4.setTag("3");
img4.setOnClickListener(this);
ll.addView(img4);
mreal.addView(ll);

}

private void addCalender(LinearLayout mreal) {
gd = new GridView(getContext());
gd.setLayoutParams(new LinearLayout.LayoutParams(-1, -2));

gd.setNumColumns(7);
gd.setCacheColorHint(android.R.color.transparent);
ArrayList<String> dat = getarrayList((calendar.get(Calendar.MONTH)),
calendar.get(Calendar.YEAR));

newmyadapter ad = setadap(dat);
gd.setAdapter(ad);
mreal.addView(gd);

}

private newmyadapter setadap(ArrayList<String> dat) {
newmyadapter ad = new newmyadapter( dat);
return ad;
}

private ArrayList<String> getarrayList(int month, int year) {
ArrayList<String> dat = new ArrayList<String>();
dat.add("Sun");
dat.add("Mon");
dat.add("Tue");
dat.add("Wed");
dat.add("Thu");
dat.add("Fri");
dat.add("Sat");

Calendar mycal =Calendar.getInstance();
mycal.set(year, month, 1);
System.out.println(year+"-"+month);
int days= mycal.getActualMaximum(Calendar.DAY_OF_MONTH);

try {
Date date1 = (new GregorianCalendar(year, month, 1)).getTime();

Format formatter = new SimpleDateFormat("EEEE");
String s = formatter.format(date1);

int h = 0;
String ne = s.toString().substring(0, 3);
System.out.println("ne" + ne);
if (ne.equalsIgnoreCase("sun")) {
h = 0;
} else if (ne.equalsIgnoreCase("mon")) {
h = 1;
} else if (ne.equalsIgnoreCase("tue")) {
h = 2;

} else if (ne.equalsIgnoreCase("wed")) {
h = 3;
} else if (ne.equalsIgnoreCase("thu")) {
h = 4;
} else if (ne.equalsIgnoreCase("fri")) {
h = 5;

} else if (ne.equalsIgnoreCase("sat")) {
h = 6;

}
System.out.println(h + "h");
for (int j = 0; j < h; j++) {
dat.add(".");
System.out.println(j + "h...");
}
} catch (Exception e) {
System.out.println(e.getMessage());
}
System.out.println(days);
for (int i = 1; i < days + 1; i++) {
dat.add(i + "");
}
return dat;
}

@Override
public void onClick(View v) {
int tag = Integer.parseInt(v.getTag().toString());
int next;
switch (tag) {
case 0:
next = Integer.parseInt(txt.getText().toString().trim()) - 1;
txt.setText(next + "");
gd.setAdapter(setadap(getarrayList(
Integer.parseInt(txt1.getTag().toString().trim()), next)));
break;
case 1:
next = Integer.parseInt(txt.getText().toString().trim()) + 1;
txt.setText(next + "");
gd.setAdapter(setadap(getarrayList(
Integer.parseInt(txt1.getTag().toString().trim()), next)));
break;
case 2:
next = (Integer.parseInt(txt1.getTag().toString().trim()) == 1) ? Integer
.parseInt(txt1.getTag().toString().trim()) : Integer
.parseInt(txt1.getTag().toString().trim()) - 1;

txt1.setText(getMonth(next));
txt1.setTag(next);
gd.setAdapter(setadap(getarrayList(next, next)));
break;
case 3:
next = (Integer.parseInt(txt1.getTag().toString().trim()) == 12) ? Integer
.parseInt(txt1.getTag().toString().trim()) : Integer
.parseInt(txt1.getTag().toString().trim()) + 1;
txt1.setText(getMonth(next));
txt1.setTag(next);
System.out.println("top" + next + "-"
+ Integer.parseInt(txt.getText().toString().trim()));
gd.setAdapter(setadap(getarrayList(next,
Integer.parseInt(txt.getText().toString().trim()))));
break;
default:
break;
}

}
public class newmyadapter extends BaseAdapter
{
protected ArrayList<String> data=null;
public newmyadapter(ArrayList<String> data)
{
this.data=data;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return data.size();
}

@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return null;
}

@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
TextView txt=new TextView(getContext());
txt.setText(data.get(position));
txt.setGravity(Gravity.CENTER);
txt.setTextColor(Color.BLACK);
String datee=data.get(position)+"-"+Integer.parseInt(txt1.getTag().toString().trim())+"-"+txt.getText().toString().trim();

if(dater!=null)
{
if(dater.contains(datee))

{
txt.setBackgroundColor(Color.RED);
txt.setClickable(false);

}else
{
txt.setBackgroundColor(Color.GREEN);
txt.setOnClickListener(new android.view.View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub

}
});
}
}
return txt;
}

}

}

Post data in android

try {

URL url = new URL(urls);
HttpURLConnection urlConnection = (HttpURLConnection) url
.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.setDoOutput(true);
urlConnection.connect();
File SDCardRoot = Environment.getExternalStorageDirectory();
File file = new File(SDCardRoot, dest);
FileOutputStream fileOutput = new FileOutputStream(file);
InputStream inputStream = urlConnection.getInputStream();
int totalSize = urlConnection.getContentLength();
Progress = "Starting image download...";
publishProgress("");

byte[] buffer = new byte[1024 * 1024];
int bufferLength = 0;
while ((bufferLength = inputStream.read(buffer)) > 0) {
fileOutput.write(buffer, 0, bufferLength);
int downloadedSize = bufferLength;

float per = ((float) downloadedSize / totalSize) * 100;

Progress = "Downloading image " + (int) per + "% complete";
publishProgress("");
}

fileOutput.close();
return setImage(dest);

} catch (final MalformedURLException e) {
}
String Proresss=null;

decodes image and scales bitmap it to reduce memory consumption

/** decodes image and scales it to reduce memory consumption **/
public static Bitmap getResizedBitmap(Bitmap bm, int newHeight, int newWidth) {
int width = bm.getWidth();
int height = bm.getHeight();
float scaleWidth = ((float) newWidth) / width;
float scaleHeight = ((float) newHeight) / height;
// CREATE A MATRIX FOR THE MANIPULATION
Matrix matrix = new Matrix();
// RESIZE THE BIT MAP
matrix.postScale(scaleWidth, scaleHeight);
// RECREATE THE NEW BITMAP
System.gc();
Bitmap resizedBitmap = Bitmap.createBitmap(bm, 0, 0, width, height,
matrix, false);
bm.recycle();
System.gc();
bm = null;
return resizedBitmap;
}

Custom Alert with extending Dialog in android

Create a your own class For alert in android Dynamically and save memory and learn java

----------------------------------------------
Code
----------------------------------------------

import android.app.Dialog;
import android.content.Context;
import android.graphics.Color;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

/**
*
* @author Sudhi.S
*
*/
public class AlertTwoButton extends Dialog implements OnClickListener {
Context mcontext = null;

public AlertTwoButton(Context context) {
super(context, android.R.style.Theme_Panel);
mcontext = context;
initialization();
}

boolean multi = false;
boolean edit = false;
String msg10=null;
public AlertTwoButton(Context context, boolean edit,boolean multi,String msg) {
super(context, android.R.style.Theme_Panel);
mcontext = context;
this.edit=edit;
this.multi = multi;
msg10=msg;
initialization();
}

RelativeLayout mreal = null;

protected void initialization() {
mreal = new RelativeLayout(mcontext);
RelativeLayout.LayoutParams mrealp = new RelativeLayout.LayoutParams(
-1, -2);
mreal.setBackgroundResource(R.drawable.abs__dialog_full_holo_light);
this.addContentView(mreal, mrealp);
}

public void showDoubleButtonAlert(String mtitle, String mmsg, Integer mres,
String button1, String button2) {
if (mtitle != null && mmsg != null && mres != null) {

RelativeLayout.LayoutParams mrealp12 = new RelativeLayout.LayoutParams(
-1, -1);
mrealp12.setMargins(10, 10, 10, 10);
LinearLayout ll0 = new LinearLayout(mcontext);
ll0.setOrientation(LinearLayout.HORIZONTAL);
ll0.setLayoutParams(mrealp12);
ll0.setPadding(5, 5, 5, 5);
ImageView img = new ImageView(mcontext);
img.setLayoutParams(new LinearLayout.LayoutParams(-2, -1));
img.setImageResource(mres);
ll0.addView(img);
TextView txt = new TextView(mcontext);
txt.setLayoutParams(new LinearLayout.LayoutParams(-1, -1));
txt.setText(mtitle);

txt.setTextColor(Color.BLACK);
ll0.addView(txt);

LinearLayout.LayoutParams lop = new LinearLayout.LayoutParams(-1,
-2);
LinearLayout ll7 = new LinearLayout(mcontext);
lop.weight = 1;
ll7.setOrientation(LinearLayout.HORIZONTAL);
Button btn = new Button(mcontext);
btn.setLayoutParams(lop);
btn.setText(button1);
btn.setTextColor(Color.BLACK);
btn.setTag(0);
btn.setOnClickListener(this);
Button btn1 = new Button(mcontext);
btn1.setLayoutParams(lop);
btn1.setText(button2);
btn1.setTextColor(Color.BLACK);
btn1.setTag(1);
btn1.setOnClickListener(this);
ll7.addView(btn);
ll7.addView(btn1);

LinearLayout ll = new LinearLayout(mcontext);
ll.setOrientation(LinearLayout.VERTICAL);
RelativeLayout.LayoutParams mrealp1 = new RelativeLayout.LayoutParams(
-1, -2);
ll.setLayoutParams(mrealp1);
View v = new View(mcontext);
v.setLayoutParams(new RelativeLayout.LayoutParams(-1, 2));

v.setBackgroundColor(Color.parseColor("#A62A2A"));
View v1 = new View(mcontext);
v1.setLayoutParams(new RelativeLayout.LayoutParams(-1, 2));
v1.setBackgroundColor(Color.parseColor("#A62A2A"));
View v2 = new View(mcontext);
v2.setLayoutParams(new RelativeLayout.LayoutParams(-1, 2));
v2.setBackgroundColor(Color.parseColor("#A62A2A"));
View v3 = new View(mcontext);
v3.setLayoutParams(new RelativeLayout.LayoutParams(-1, 20));
View v4 = new View(mcontext);
v4.setLayoutParams(new RelativeLayout.LayoutParams(-1, 20));
ll.addView(v);
ll.addView(ll0);
ll.addView(v1);
ll.addView(v3);
RelativeLayout.LayoutParams mrealp2 = new RelativeLayout.LayoutParams(
-1, -2);
if (edit == false) {

TextView txt1 = new TextView(mcontext);
txt1.setLayoutParams(mrealp2);

txt1.setGravity(Gravity.CENTER);
txt1.setText(mmsg);
txt1.setTextColor(Color.BLACK);
ll.addView(txt1);
} else {
RelativeLayout.LayoutParams mre = new RelativeLayout.LayoutParams(
-1, -1);
txt0 = new EditText(mcontext);
txt0.setLayoutParams(mre);
txt0.setTag("msg");
txt0.setGravity(Gravity.TOP);
txt0.setHint(mmsg);
if(msg10!=null)
{
txt0.setText(msg10);
}
if(multi!=false)
{
txt0.setMinLines(5);
}else
{
txt0.setSingleLine(true);
}
txt0.setTextColor(Color.BLACK);
ll.addView(txt0);

}

ll.addView(v4);
ll.addView(v2);
ll.addView(ll7);

mreal.addView(ll);

}
this.show();

}
EditText txt0=null;
public void setButtonClickLisner(AlertTwoButtonListener mli) {
mlistener = mli;
}

AlertTwoButtonListener mlistener = null;
public void setEditButtonClickLisner(AlertEditTwoButtonListener mli) {
ml = mli;
}

public interface AlertTwoButtonListener {
public void onAlertFirstButtonClick();

public void onAlertSecondButtonClick();

}
AlertEditTwoButtonListener ml=null;
public interface AlertEditTwoButtonListener
{
public void onAlertEditFisrtButtonClick(String msg);
public void onAlertEditSecondButtonClick();
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
int which = ((Integer) v.getTag()).intValue();

if (mlistener != null)

{
switch (which) {
case 0:
mlistener.onAlertFirstButtonClick();
break;
case 1:
mlistener.onAlertSecondButtonClick();
break;

default:
break;
}

}else if (ml != null)

{

switch (which) {
case 0:
ml.onAlertEditFisrtButtonClick(txt0.getText().toString().trim()+"");
break;
case 1:
ml.onAlertEditSecondButtonClick();
break;

default:
break;
}

}
}

}

ohmlok

Pages

Thursday, February 7, 2013

Dynamic gradient in android

email validation in android

Android Custom Calendar

Post data in android

decodes image and scales bitmap it to reduce memory consumption

Custom Alert with extending Dialog in android

Custom Alert with extending Dialog in android

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