Create android application to Understand Android Share Preference. - code, android programming

Dharmik
//AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>

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

    package="com.example.dharmik.p11">



    <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>

    </application>



</manifest>
//MainActivity.java
package com.example.dharmik.p11;



import android.content.SharedPreferences;

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.Toast;



public class MainActivity extends AppCompatActivity {



    EditText username,password;

    Button insert,show,delete;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        username=(EditText)findViewById(R.id.et1);

        password=(EditText)findViewById(R.id.et2);

        insert=(Button)findViewById(R.id.bt1);

        show=(Button)findViewById(R.id.bt2);

        delete=(Button)findViewById(R.id.bt3);

        final SharedPreferences sp=getApplicationContext().getSharedPreferences("MyPrefs",MODE_PRIVATE);

        final SharedPreferences.Editor et=sp.edit();

        insert.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                Toast.makeText(getApplicationContext(),"all previous data is being deleted",Toast.LENGTH_SHORT).show();

                et.clear();

                et.commit();

                et.putString("username",username.getText().toString());

                et.putString("password",password.getText().toString());

                et.commit();

                username.setText(null);

                password.setText(null);

                Toast.makeText(getApplicationContext(),"data stored successfully",Toast.LENGTH_SHORT).show();

            }

        });



        show.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                String un=sp.getString("username",null);

                String pass=sp.getString("password",null);

                username.setText(un);

                password.setText(pass);

                Toast.makeText(getApplicationContext(),"data fetched successfully",Toast.LENGTH_SHORT).show();

                if (un==null || pass==null)

                    Toast.makeText(getApplicationContext(),"no data found",Toast.LENGTH_SHORT).show();

            }

        });



        delete.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                et.clear();

                et.commit();

                username.setText(null);

                password.setText(null);

                Toast.makeText(getApplicationContext(),"all data deleted successfully",Toast.LENGTH_SHORT).show();

            }

        });

    }

}
//activity_main.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:id="@+id/activity_main"

    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="com.example.dharmik.p11.MainActivity">



    <TextView

        android:text="@string/username"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginLeft="15dp"

        android:layout_marginStart="15dp"

        android:layout_marginTop="91dp"

        android:id="@+id/tv1"

        android:layout_alignParentTop="true"

        android:layout_alignParentLeft="true"

        android:layout_alignParentStart="true" />



    <TextView

        android:text="@string/password"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginTop="69dp"

        android:id="@+id/tv2"

        android:layout_below="@+id/tv1"

        android:layout_alignLeft="@+id/tv1"

        android:layout_alignStart="@+id/tv1" />



    <Button

        android:text="@string/insert"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginTop="69dp"

        android:id="@+id/bt1"

        android:layout_below="@+id/et2"

        android:layout_centerHorizontal="true" />



    <Button

        android:text="@string/show"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginTop="31dp"

        android:id="@+id/bt2"

        android:layout_below="@+id/bt1"

        android:layout_centerHorizontal="true" />



    <Button

        android:text="@string/delete"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:id="@+id/bt3"

        android:layout_below="@+id/bt2"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="20dp" />



    <EditText

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:inputType="textPersonName"

        android:ems="10"

        android:id="@+id/et1"

        android:layout_alignBaseline="@+id/tv1"

        android:layout_alignBottom="@+id/tv1"

        android:layout_alignLeft="@+id/bt2"

        android:layout_alignStart="@+id/bt2" />



    <EditText

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:inputType="text"

        android:ems="10"

        android:id="@+id/et2"

        android:layout_alignBaseline="@+id/tv2"

        android:layout_alignBottom="@+id/tv2"

        android:layout_alignLeft="@+id/et1"

        android:layout_alignStart="@+id/et1" />

</RelativeLayout>
//strings.xml

<resources>

    <string name="app_name">p11</string>

    <string name="username">username</string>

    <string name="password">password</string>

    <string name="insert">insert</string>

    <string name="show">show data</string>

    <string name="delete">delete</string>

</resources>


OUTPUT:-
Read More
10:23 PM

Create the sample application that rotate a green rectangle shape / image and after that double the size of that object and then shrink back to our starting size. - tween animation example with code - android programming

Dharmik
//AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.dharmik.p10">

    <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>
    </application>

</manifest>
                                
                                                        //activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    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="com.example.dharmik.p10.MainActivity">

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:id="@+id/iv_1"
        tools:ignore="ContentDescription"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />
</RelativeLayout>
                                        
                                                               //strings.xml


<resources>
    <string name="app_name">p10</string>
</resources>
                                        
                                                             //anim/all.xml

<?xml version="1.0" encoding="utf-8"?>
<set>
    <alpha xmlns:android="http://schemas.android.com/apk/res/android"
        android:fromAlpha="0.0"
        android:toAlpha="1.0"
        android:duration="4000"></alpha>

    <rotate xmlns:android="http://schemas.android.com/apk/res/android"
        android:startOffset="4000"
        android:fromDegrees="0"
        android:toDegrees="360"
        android:pivotX="100%"
        android:pivotY="50%"
        android:duration="2000"></rotate>

    <scale xmlns:android="http://schemas.android.com/apk/res/android"
        android:startOffset="6000"
        android:fromXScale="1.0"
        android:toXScale="2.0"
        android:fromYScale="1.0"
        android:toYScale="2.0"
        android:duration="4000"></scale>

    <translate xmlns:android="http://schemas.android.com/apk/res/android"
        android:startOffset="10000"
        android:fromXDelta="0%"
        android:toXDelta="200%"
        android:fromYDelta="0%"
        android:toYDelta="1000%"
        android:duration="2000"></translate>

    <translate xmlns:android="http://schemas.android.com/apk/res/android"
        android:startOffset="12000"
        android:fromXDelta="0%"
        android:toXDelta="-200%"
        android:fromYDelta="0%"
        android:toYDelta="-1000%"
        android:duration="2000"></translate>

    <scale xmlns:android="http://schemas.android.com/apk/res/android"
        android:startOffset="14000"
        android:fromXScale="1.0"
        android:toXScale="0.5"
        android:fromYScale="1.0"
        android:toYScale="0.5"
        android:duration="4000"></scale>

</set>
                                    
                                                        //MainActivity.java

package com.example.dharmik.p10;

import android.graphics.Color;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.shapes.RectShape;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    ImageView iv;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        iv=(ImageView)findViewById(R.id.iv_1);
        ShapeDrawable rect=new ShapeDrawable(new RectShape());
        rect.setIntrinsicHeight(100);
        rect.setIntrinsicWidth(200);
        rect.getPaint().setColor(Color.GREEN);
        iv.setImageDrawable(rect);
        Animation anm= AnimationUtils.loadAnimation(getApplicationContext(),R.anim.all);
        iv.setAnimation(anm);
    }
}

//Output
   
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10:14 PM
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