Android Input Form Example

Android Input Form Example

Today We Start Android Basic Input Types Like : -

1.Edittext  (Input Box Taking Value From User).

2.spinner (Spinner is a dropdown For Taking Value From User)

3.Radio ( Radio a option button for selecting one value from multiple values)

4.Button ( Button For Submitting our Data).

Now Let's Start.

First Create A New Android Project :  

(Don't know How To Start Please Follow This First )

Now Open activity_main.xml file and Delete Everything Old Code We creating from Scratch.

 Now Make One LinearLayout with Orientation Vertical .

 Code : 

<LinearLayout android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    xmlns:android="http://schemas.android.com/apk/res/android" >
</LinearLayout> 

Like this : 
  

Here i LinearLinear Layout Which is Perfect for beginning.  I add Orientation vertical so that my all child item inside linear layout comes one after another.

Let's Add Some Input Elements Like Edittext,Button,Radio,Spinner .

<LinearLayout android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    xmlns:android="http://schemas.android.com/apk/res/android" >
    <EditText
        android:layout_margin="10dp"
        android:hint="Username"
        android:id="@+id/username"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    <EditText
        android:id="@+id/password"
        android:hint="Password"
        android:layout_margin="10dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    <RadioGroup
        android:id="@+id/gender"
        android:layout_margin="10dp"
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <RadioButton
            android:id="@+id/male"
            android:layout_weight="1"
            android:text="Male"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />
        <RadioButton
            android:id="@+id/female"
            android:layout_weight="1"
            android:text="Female"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />
    </RadioGroup>
    <TextView
        android:text="Age"
        android:layout_margin="10dp"
        android:textAlignment="center"
        android:textSize="20dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    <Spinner
        android:id="@+id/age"
        android:layout_margin="10dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
    <Button
        android:id="@+id/submit"
        android:text="Submit"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>

Our Final Design Look Like This : 

Now Let's Code in JAVA for Taking Values from this Input When Click on Submit .

MainActivity.java

package androidbasic.supercoders.in.androidbasic;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //-----Declaring Input Element and Finding in Our Layout View----
        final EditText edit_username=(EditText)findViewById(R.id.username);
        final EditText edit_password=(EditText)findViewById(R.id.password);
        final RadioGroup Gender=(RadioGroup) findViewById(R.id.gender);
        final RadioButton Male=(RadioButton) findViewById(R.id.male);
        final RadioButton FeMale=(RadioButton) findViewById(R.id.female);
        final Spinner Ages=(Spinner)findViewById(R.id.age);
        Button Submit=(Button)findViewById(R.id.submit);

        //==========Now Setting Value in Our DropDown Spinner==============
        //======For This We Have To Create A ArrayAdapter with Type String=====
        //===ArrayAdapter is Java Class And its Constructor Takes 3 Param
        //1. Current Class Context,2. Our Textview Layout ,3. Our List of Items in string.


        //====First Create a List of Item for age  ==

        List<String > list=new ArrayList<>();
        for(int i=10;i<50;i++){
            list.add(String.valueOf(i));
        }

        ArrayAdapter<String> arrayAdapter=new ArrayAdapter<>(MainActivity.this,android.R.layout.simple_dropdown_item_1line,list);

        //====Now Set the Adapter To Spinner by Using SetAdapter Method

        Ages.setAdapter(arrayAdapter);

        //====Set On Click Listener For Button ===

        Submit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                //===Now Doing Some Validation====

                //====We Can Get Value of Edit Text By using method gettext==

                if(edit_username.getText().toString().isEmpty()){
                    edit_username.setError("Please Enter Username");
                }
                else if(edit_password.getText().toString().isEmpty()){
                    edit_password.setError("Please Enter Username");
                }
                else if(!Male.isChecked() && !FeMale.isChecked()){

                    //===Toast I Used Here For Small Message Display==
                    Toast.makeText(MainActivity.this, "Please Select Gender", Toast.LENGTH_SHORT).show();
                 }
                 else{
                    Toast.makeText(MainActivity.this, edit_username.getText().toString(), Toast.LENGTH_SHORT).show();
                    Toast.makeText(MainActivity.this, edit_password.getText().toString(), Toast.LENGTH_SHORT).show();
                    Toast.makeText(MainActivity.this, Ages.getSelectedItem().toString(), Toast.LENGTH_SHORT).show();

                    RadioButton selectedGender=(RadioButton)findViewById(Gender.getCheckedRadioButtonId());
                    Toast.makeText(MainActivity.this,selectedGender.getText().toString() , Toast.LENGTH_SHORT).show();
                }
            }
        });


    }
}

Here is Our Final Result 

Download Complete Source Code