How to Blink Text View in Every 1 second in Android

package com.android.textviewblink;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.View;
import android.widget.TextView;

public class TextViewBlink extends Activity {
Handler handler;
TextView txtvw;
boolean blinkOn = true;
        @Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
txtvw = (TextView) findViewById(R.id.txtview);
Thread myThread = null;
Runnable runnable = new CountDownRunner();
myThread = new Thread(runnable);
myThread.start();

}

public void update(){
runOnUiThread(new Runnable() {

@Override
public void run() {
// TODO Auto-generated method stub
if (blinkOn) {
 txtvw.setVisibility(View.VISIBLE);
//txtvw.setText("Himanshu");
Log.v("log_tag", "true is gone");
} else {
txtvw.setVisibility(View.INVISIBLE);
//txtvw.setText("Mistri");
Log.v("log_tag", "false is gone");
}
blinkOn = !blinkOn;
}
});
}
class CountDownRunner implements Runnable {

// @Override
public void run() {
while (!Thread.currentThread().isInterrupted()) {
try {
                                      Thread.sleep(1000); //here you can change the time of blink
update();
Log.v("log_tag", "here the thread come for every 1 second ");

} catch (InterruptedException e) {
// Thread.currentThread().interrupt();
Log.e("log_tag", "Error s " + e.toString());
} catch (Exception e) {
Log.e("log_tag", "Error is " + e.toString());
}
}
}
}
}

Android Button Design and selector

For first The xml file for may main layout in android activity is following

main.xml
----------------------------------------------------------------------------------

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content" android:text="@string/hello" />
<LinearLayout android:orientation="horizontal"
android:layout_width="wrap_content" android:layout_height="wrap_content">
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content" android:text="Done" android:id="@+id/donebtn"
android:padding="5dip" android:background="@drawable/button_view" />
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content" android:text="back" android:id="@+id/backbtn"
android:padding="5dip" android:background="@drawable/button_view" />
</LinearLayout>
<LinearLayout android:orientation="horizontal"
android:layout_width="wrap_content" android:layout_height="wrap_content">
<Button android:text="button_selector" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:background="@drawable/selector" />
</LinearLayout>
</LinearLayout>

-------------------------------------------------------------------------------------------------------------

After declare main xml file we will make 

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

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

android:shape="rectangle">

<solid android:color="#453657" />

<stroke android:width="1dp" android:height="1dp"  android:color="#FFD40F"  />

<corners android:bottomLeftRadius="8dip"

android:topRightRadius="8dip" android:topLeftRadius="8dip"

android:bottomRightRadius="8dip" />

</shape>

this xml file in drawable folder of your project .

<solid/> this tag is for background color of shape

<stroke/> this tag is used for boarder of shape

<corners/> this tag is used for make the corner round at given value.

and now for changing on button clicked changes we define again new xml file like this below.

Selector.xml

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

<item android:drawable="@drawable/spinner_dropdown_background_down"

android:state_pressed="true" />

 

<item android:drawable="@drawable/spinner_dropdown_background_down" 

android:state_focused="true" />

<item android:drawable="@drawable/spinner_dropdown_background_up" />

</selector>

Custom ListView In android

Here is the android tutorial for how to make android custom list view with TextView ,Image View ,Check Box

Below is the java file for it.

package android.tutorial.customlist;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

public class CustomListView extends Activity {
    ListView mListview;
/** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mListview=(ListView)findViewById(R.id.listview);
        mListview.setAdapter(new mCustomList(this));
      
    }
    public class mCustomList extends BaseAdapter{
     private Context mContext;

     public mCustomList(Context c){
     mContext = c;
     }
     @Override
public int getCount() {
// TODO Auto-generated method stub
return COUNTRIES.length;
}

@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
}

@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}

@Override
public View getView(int position, View converView, ViewGroup parent) {
View List;
if(converView==null){
List=new View(mContext);
LayoutInflater mLayoutinflater=getLayoutInflater();
List=mLayoutinflater.inflate(R.layout.mylist, parent, false);
}
else{
List = (View)converView;
}
ImageView imageView = (ImageView)List.findViewById(R.id.imgview);
TextView textView = (TextView)List.findViewById(R.id.text);
CheckBox chkbox=(CheckBox)List.findViewById(R.id.chkbox);
textView.setText(COUNTRIES[position]);

// TODO Auto-generated method stub
return List;
}
    
    }
  
    static final String[] COUNTRIES = new String[] {
        "Afghanistan", "Albania", "Algeria", "American Samoa", "Andorra",
        "Angola", "Anguilla", "Antarctica", "Antigua and Barbuda", "Argentina",
        "Armenia", "Aruba", "Australia", "Austria", "Azerbaijan",
        "Bahrain", "Bangladesh", "Barbados", "Belarus", "Belgium",
        "Belize", "Benin", "Bermuda", "Bhutan", "Bolivia",
        "Bosnia and Herzegovina", "Botswana", "Bouvet Island", "Brazil", "British Indian Ocean Territory",
        "British Virgin Islands", "Brunei", "Bulgaria", "Burkina Faso", "Burundi",
        "Cote d'Ivoire", "Cambodia", "Cameroon", "Canada", "Cape Verde",
        "Cayman Islands", "Central African Republic", "Chad", "Chile", "China",
        "Christmas Island", "Cocos (Keeling) Islands", "Colombia", "Comoros", "Congo",
        "Cook Islands", "Costa Rica", "Croatia", "Cuba", "Cyprus", "Czech Republic",
        "Democratic Republic of the Congo", "Denmark", "Djibouti", "Dominica", "Dominican Republic",
        "East Timor", "Ecuador", "Egypt", "El Salvador", "Equatorial Guinea", "Eritrea",
        "Estonia", "Ethiopia", "Faeroe Islands", "Falkland Islands", "Fiji", "Finland",
        "Former Yugoslav Republic of Macedonia", "France", "French Guiana", "French Polynesia",
        "French Southern Territories", "Gabon", "Georgia", "Germany", "Ghana", "Gibraltar",
        "Greece", "Greenland", "Grenada", "Guadeloupe", "Guam", "Guatemala", "Guinea", "Guinea-Bissau",
        "Guyana", "Haiti", "Heard Island and McDonald Islands", "Honduras", "Hong Kong", "Hungary",
        "Iceland", "India", "Indonesia", "Iran", "Iraq", "Ireland", "Israel", "Italy", "Jamaica",
        "Japan", "Jordan", "Kazakhstan", "Kenya", "Kiribati", "Kuwait", "Kyrgyzstan", "Laos",
        "Latvia", "Lebanon", "Lesotho", "Liberia", "Libya", "Liechtenstein", "Lithuania", "Luxembourg",
        "Macau", "Madagascar", "Malawi", "Malaysia", "Maldives", "Mali", "Malta", "Marshall Islands",
        "Martinique", "Mauritania", "Mauritius", "Mayotte", "Mexico", "Micronesia", "Moldova",
        "Monaco", "Mongolia", "Montserrat", "Morocco", "Mozambique", "Myanmar", "Namibia",
        "Nauru", "Nepal", "Netherlands", "Netherlands Antilles", "New Caledonia", "New Zealand",
        "Nicaragua", "Niger", "Nigeria", "Niue", "Norfolk Island", "North Korea", "Northern Marianas",
        "Norway", "Oman", "Pakistan", "Palau", "Panama", "Papua New Guinea", "Paraguay", "Peru",
        "Philippines", "Pitcairn Islands", "Poland", "Portugal", "Puerto Rico", "Qatar",
        "Reunion", "Romania", "Russia", "Rwanda", "Sqo Tome and Principe", "Saint Helena",
        "Saint Kitts and Nevis", "Saint Lucia", "Saint Pierre and Miquelon",
        "Saint Vincent and the Grenadines", "Samoa", "San Marino", "Saudi Arabia", "Senegal",
        "Seychelles", "Sierra Leone", "Singapore", "Slovakia", "Slovenia", "Solomon Islands",
        "Somalia", "South Africa", "South Georgia and the South Sandwich Islands", "South Korea",
        "Spain", "Sri Lanka", "Sudan", "Suriname", "Svalbard and Jan Mayen", "Swaziland", "Sweden",
        "Switzerland", "Syria", "Taiwan", "Tajikistan", "Tanzania", "Thailand", "The Bahamas",
        "The Gambia", "Togo", "Tokelau", "Tonga", "Trinidad and Tobago", "Tunisia", "Turkey",
        "Turkmenistan", "Turks and Caicos Islands", "Tuvalu", "Virgin Islands", "Uganda",
        "Ukraine", "United Arab Emirates", "United Kingdom",
        "United States", "United States Minor Outlying Islands", "Uruguay", "Uzbekistan",
        "Vanuatu", "Vatican City", "Venezuela", "Vietnam", "Wallis and Futuna", "Western Sahara",
        "Yemen", "Yugoslavia", "Zambia", "Zimbabwe"
      };
}


The Xml File for Main activity is here:

Main.xml


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<ListView
android:id="@+id/listview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:scrollbars="none"
></ListView>
</LinearLayout>

for making custom list view here is the custom xml file you can modified file as require listview .

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

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

android:layout_width="fill_parent" android:layout_height="wrap_content"

android:background="@drawable/list_back">

<TextView android:id="@+id/text" android:layout_width="wrap_content"

android:layout_height="wrap_content" android:textColor="#099900" />

<ImageView android:layout_width="wrap_content"

android:layout_height="wrap_content" android:scaleType="center"

android:id="@+id/imgview" android:src="@drawable/icon" android:layout_centerInParent="true" />

<CheckBox android:id="@+id/chkbox" android:layout_width="wrap_content"

android:layout_height="wrap_content" android:checked="true" android:layout_alignParentRight="true" android:layout_marginRight="10dip" />

</RelativeLayout>