How to Pass Data from One Activity to Another in Android

How to Pass Data from One Activity to Another in Android

In this tutorial, you'll learn to pass information from one activity to a different in humanoid with and while not mistreatment intent.

Basically, we are able to send information between activities in 2 ways in which.

Using Intent

Using international Variables

Below I actually have mentioned each of the strategies thoroughly.

Note There is another way in which like shared preferences and information (SQLite) however here I actually have shared solely those ways in which don’t involve saving of information.

How to Pass information from One Activity to a different in humanoid

Method 1: mistreatment Intent

We can send information whereas career one activity from another activity mistreatment intent. All we've to try to to is add the info to Intent object mistreatment putExtra() technique. the info is passed in key worth try. the worth is of sorts like int, float, long, string, etc.

What is Intent?

Through Intent we can move from one activity to another activity and Intent can also be used to pass the data from one activity to another activity.

In the previous article, we designed the Login Page and now we will learn how to use Intent to pass data from LoginActivity to the next activity.

Sending Data

Intent intent = new Intent(context, DestinationActivityName.class);

intent.putExtra(Key, Value);

startActivity(intent);

Here I am sending just one value, in the same way, you can attach more values by using the putExtra() method.

Retrieving Data

If the data sent is of type string then it can be fetched in the following way.

Intent intent = getIntent();

String str = intent.getStringExtra(Key);

There are several other methods like getIntExtra(), getFloatExtra(), etc to fetch other types of data.

Below is the example of passing data between activities using intents.

1.MainActivity.java:

package com.akash.intentexample;

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;

public class MainActivity extends AppCompatActivity {

    EditText textBox;

    Button passButton;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        textBox = (EditText)findViewById(R.id.textBox);

        passButton = (Button)findViewById(R.id.passButton);

        passButton.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                String str = textBox.getText().toString();

                Intent intent = new Intent(getApplicationContext(), Second_activity.class);

                intent.putExtra("message", str);

                startActivity(intent);

            }

        });

    }

}

2.activity_main.xml:

<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:padding="15dp"

    android:orientation="vertical">

    <EditText

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:id="@+id/textBox"

        android:hint="Enter Your Message"/>

    <Button

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:id="@+id/passButton"

        android:text="Pass"/>

</LinearLayout>

3.Second_activity.java:

package com.akash.intentexample;

import android.content.Intent;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.widget.TextView;

public class Second_activity extends AppCompatActivity {

    TextView text;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_second_activity);

        text = (TextView)findViewById(R.id.text);

        Intent intent = getIntent();

        String str = intent.getStringExtra("message");

        text.setText(str);

    }

}

4.activity_second_activity.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:padding="15dp"

    tools:context="com.androidexample.Second">

 

    <TextView

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text=""

        android:id="@+id/text"/>

</LinearLayout>

5.AndroidManifest.xml:

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

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

    package="com.akash.intentexample">

    <application

        android:allowBackup="true"

        android:icon="@mipmap/ic_launcher"

        android:label="@string/app_name"

        android:roundIcon="@mipmap/ic_launcher_round"

        android:supportsRtl="true"

        android:theme="@style/AppTheme">

        <activity android:name=".Second_activity"></activity>

        <activity android:name=".MainActivity">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>

6.Output: