VIDEO
MainActivity.java
package kantapp.androidloginexamplewithoutdatabase;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity
{
Button login,exit;
EditText username,pass;
TextView counts;
int count=3;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
onLoginClick();
onExitClick();
}
public void onLoginClick()
{
counts=(TextView)findViewById(R.id.count);
username=(EditText)findViewById(R.id.username);
pass=(EditText)findViewById(R.id.pass);
login=(Button)findViewById(R.id.login);
login.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v)
{
if(username.getText().toString().equals("admin")&&pass.getText().toString().equals("1234"))
{
startActivity(new Intent(getApplicationContext(),Welcome.class));
}
else
{
Toast.makeText(MainActivity.this,
"Your ID or Password is Wrong Please Enter Again",
Toast.LENGTH_SHORT).show();
}
count--;
counts.setText(Integer.toString(count));
if(count==0)
{
login.setEnabled(false);
}
}
});
}
public void onExitClick()
{
exit=(Button)findViewById(R.id.exit);
exit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="kantapp.androidloginexamplewithoutdatabase.MainActivity">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:text="Login First"
android:textAppearance="?android:attr/textAppearanceLarge" />
<EditText
android:id="@+id/username"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="User Name" />
<EditText
android:id="@+id/pass"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="Password"
android:inputType="textPassword" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:id="@+id/login"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Login" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Exit"
android:id="@+id/exit" />
</LinearLayout>
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="You Allow wrong Attempt only 3 time"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/count"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="3"
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
Welcome.java
package kantapp.androidloginexamplewithoutdatabase;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class Welcome extends AppCompatActivity
{
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_welcome);
Button button=(Button)findViewById(R.id.back);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v)
{
startActivity(new Intent(getApplicationContext(),MainActivity.class));
finish();
}
});
}
}
activity_welcome.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="kantapp.androidloginexamplewithoutdatabase.Welcome"
android:background="#d6d7d7">
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/imageButton"
android:layout_marginTop="129dp"
android:src="@mipmap/ic_launcher"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Welcome"
android:paddingBottom="20dp"
android:id="@+id/textView3"
android:layout_alignBottom="@+id/imageButton"
android:layout_toRightOf="@+id/imageButton"
android:layout_toEndOf="@+id/imageButton" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Back"
android:id="@+id/back"
android:layout_centerVertical="true"
android:layout_toRightOf="@+id/imageButton"
android:layout_toEndOf="@+id/imageButton" />
</RelativeLayout>
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="kantapp.androidloginexamplewithoutdatabase">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Welcome"></activity>
</application>
</manifest>
