MainActivity.java
activity_main.xml
package com.blogspot.csdevbin.sharedpreferences;
import android.content.Context; 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.TextView; import android.widget.Toast; public class MainActivity extends AppCompatActivity { EditText food,shopping,fuel,telephone; TextView previousExpense; SharedPreferences sharedPreferences; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); food = (EditText)findViewById(R.id.etfood); shopping = (EditText)findViewById(R.id.edShopping); fuel = (EditText)findViewById(R.id.edFuel); telephone = (EditText)findViewById(R.id.etTelephone); previousExpense = (TextView) findViewById(R.id.textView_head); Button calculate = (Button)findViewById(R.id.button_calc); sharedPreferences =getSharedPreferences("EXPENCES", Context.MODE_PRIVATE); previousExpense.setText(String.valueOf(sharedPreferences.getInt("EXP",0))); calculate.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { int expense =Integer.valueOf(food.getText().toString()) + Integer.valueOf(shopping.getText().toString()) + Integer.valueOf(fuel.getText().toString()) + Integer.valueOf(telephone.getText().toString()) ; Toast.makeText(MainActivity.this, "Total Expense is : " +String.valueOf(expense), Toast.LENGTH_SHORT).show(); previousExpense.setText("Total Previous Expense was : " +String.valueOf(expense)); SharedPreferences.Editor edit = sharedPreferences.edit(); edit.putInt("EXP",expense); edit.apply(); } }); } } |
<?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.blogspot.csdevbin.sharedpreferences.MainActivity"> <TextView android:text="Previous Expense" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" android:layout_marginTop="18dp" android:id="@+id/textView_head" android:textAppearance="@style/TextAppearance.AppCompat.Body1" /> <TextView android:text="Food" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/textView_head" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" android:layout_marginLeft="21dp" android:layout_marginStart="21dp" android:layout_marginTop="74dp" android:id="@+id/textView_food" /> <EditText android:layout_width="wrap_content" android:layout_height="wrap_content" android:inputType="number" android:ems="10" android:id="@+id/etfood" android:layout_alignBottom="@+id/textView_food" android:layout_alignLeft="@+id/textView_head" android:layout_alignStart="@+id/textView_head" /> <TextView android:text="Shopping" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/textView_food" android:layout_alignLeft="@+id/textView_food" android:layout_alignStart="@+id/textView_food" android:layout_marginTop="51dp" android:id="@+id/textView_shopping" /> <EditText android:layout_width="wrap_content" android:layout_height="wrap_content" android:inputType="number" android:ems="10" android:layout_alignBottom="@+id/textView_shopping" android:layout_alignLeft="@+id/etfood" android:layout_alignStart="@+id/etfood" android:id="@+id/edShopping" /> <TextView android:text="Fuel" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/textView_shopping" android:layout_alignLeft="@+id/textView_shopping" android:layout_alignStart="@+id/textView_shopping" android:layout_marginTop="68dp" android:id="@+id/textView_fuel" /> <TextView android:text="Telephone" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/textView_tele" android:layout_below="@+id/textView_fuel" android:layout_alignLeft="@+id/textView_fuel" android:layout_alignStart="@+id/textView_fuel" android:layout_marginTop="56dp" /> <EditText android:layout_width="wrap_content" android:layout_height="wrap_content" android:inputType="number" android:ems="10" android:id="@+id/etTelephone" android:layout_alignBottom="@+id/textView_tele" android:layout_alignLeft="@+id/edFuel" android:layout_alignStart="@+id/edFuel" /> <Button android:text="Calculate" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_marginBottom="28dp" android:id="@+id/button_calc" android:layout_alignRight="@+id/etTelephone" android:layout_alignEnd="@+id/etTelephone" android:layout_alignLeft="@+id/textView_tele" android:layout_alignStart="@+id/textView_tele" /> <EditText android:layout_width="wrap_content" android:layout_height="wrap_content" android:inputType="number" android:ems="10" android:id="@+id/edFuel" android:layout_alignBottom="@+id/textView_fuel" android:layout_alignLeft="@+id/edShopping" android:layout_alignStart="@+id/edShopping" /> </RelativeLayout> |
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