Button Animation android

Button Animation android
create folder anim in res folder
then create xml file name anim_rotate.xml

paste this to anim_rotate.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="@android:anim/linear_interpolator">
<rotate
android:fromDegrees="0"
android:toDegrees="360"
android:pivotX="50%"
android:pivotY="50%"
android:duration="500"
android:startOffset="0"
android:repeatCount="1"
android:repeatMode="reverse" />
</set>


now declare this in Activity

final Animation animRotate = AnimationUtils.loadAnimation(this, R.anim.anim_rotate);

Button b1 = (Button)findViewById(R.id.button);
b1.startAnimation(animRotate);

Create Android icons acording to your phone

Create and modify android graphics online
create graphics according to all devices in android
a folder of res will be created and it will contain all supported images for all devices
Android Asset Studio

http://android-ui-utils.googlecode.com/hg/asset-studio/dist/icons-generic.html#source.space.trim=1&source.space.pad=0&size=24&padding=8&color=33b5e5%2C0&name=ic_example

set package install location android

set application install location android
set install location to sdcard android

put android:installLocation="preferExternal"

under <manifest xmlns:android="http://schemas.android.com/apk/res/android">
in menifest.xml file


code should appears like

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
android:installLocation="preferExternal">

for setting install location to phone put "preferInternal" in place of "preferExternal"

Create Transparent button android

make button transprent android
android transparent button


put this in xml file of button

android:background="@android:color/transparent"

all screen supporting android

to support all size screens in android


<supports-screens android:smallscreens="true">
<supports-screens android:normalscreens="true">
<supports-screens android:largescreens="true">
<supports-screens android:anydensity="true">
<supports-screens android:anydensity="true"
android:resizeable="true">

put these in manifest.xml

Disable back button android

Disable back button
disable home button android


@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
boolean i = false;
if ((keyCode == KeyEvent.KEYCODE_BACK)) {

i=true;
}
return i;
}


to disable home button put KEYCODE_HOME

Android home button

perform task on press home button


or close activity on press home button android

@Override
protected void onPause()
{
super.onPause();
finish();
this.finish();
System.exit(0);
// insert here your instructions
}

Create alert dialog box android

create stylish alert dialog box android
create about us page android

Button b5;
b5=(Button)findViewById(R.id.aboutus);
b5.setOnClickListener(new OnClickListener() {

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

AlertDialog alertDialog = new AlertDialog.Builder(
easyselect.this).create();

// Setting Dialog Title
alertDialog.setTitle("Europa TechnoSoft pvt. ltd");

// Setting Dialog Message
alertDialog.setMessage("Europa Technosoft was initially set up as" +
" a single product company at New Delhi, today it is a multi-product " +
"and multi-technology with its marketing network spread across the country." +
" The Company over the yearÂ’s mirrors and advances in technological innovations," +
" with which it has kept pace. The Company's efforts for business excellence" +
" has been recognized time and again by its customers & others.");

// Setting Icon to Dialog
alertDialog.setIcon(R.drawable.tick);

// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {


}
});

// Showing Alert Message
alertDialog.show();

}
});


Download Image tick.png here

how to make button unclickable if radio button is not selected

button.setEnabled(false);

Timer in android

How to set coundown timer in android
reverse countdown android

first declare textview


TextView tv = (TextView)findViewById(R.id.textView1);


new CountDownTimer(30000, 1000) {

public void onTick(long millisUntilFinished) {
tv.setText("Seconds remaining: " + millisUntilFinished / 1000);
}

public void onFinish() {
tv.setText("done!");
}
}.start();


timer for 30 sec.. is ready