This tutorial will teach you Student Marks Calculation Project in Android Studio step by step.
Input Student Name, Marks and Calculate the Total,avg,grade.when you calculate the grade you have to follow the Following Conditions.if the avg is greater than 50 grade will be pass other wise grade will be fail.
Design the UI Design
Android studio folder structure there is folder which is res this is the folder will help us to make a UI Design of the App.inside res folder you can see the layout folder if you expand the layout folder there is a file
activity_main.xml
in this file we will design App Layout i have design the registration UI design below.
activity_main.xml
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278 279 280 281 282 | <?xml version="1.0" encoding="utf-8"?> <LinearLayout 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:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity" android:orientation="vertical" android:gravity="center"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:gravity="center"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" android:gravity="center"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="30sp" android:gravity="center" android:text="@string/emptitle" android:textSize="15dp" android:textStyle="bold" android:textColor="@color/colorPrimary" /> <ImageView android:layout_width="200sp" android:layout_height="100sp" android:gravity="center" android:src="@drawable/marks" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:gravity="center" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="20sp" android:text="@string/stname" android:textSize="15sp" android:textStyle="italic" android:textColor="@color/colorAccent" /> <EditText android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/stname" android:textColor="@color/colorPrimary" android:gravity="center" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:gravity="center" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="15sp" android:text="@string/marks1" android:textSize="15sp" android:textStyle="italic" android:textColor="@color/colorAccent" /> <EditText android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/mark1" android:textColor="@color/colorPrimary" android:gravity="center" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:gravity="center" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="15sp" android:text="@string/marks2" android:textSize="15sp" android:textStyle="italic" android:textColor="@color/colorAccent" /> <EditText android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/mark2" android:textColor="@color/colorPrimary" android:gravity="center" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:gravity="center" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="20sp" android:text="@string/marks3" android:textSize="15sp" android:textStyle="italic" android:textColor="@color/colorAccent" /> <EditText android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/mark3" android:textColor="@color/colorPrimary" android:gravity="center" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:gravity="center" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="20sp" android:text="@string/total" android:textSize="15sp" android:textStyle="italic" android:textColor="@color/colorAccent" /> <EditText android:id="@+id/total" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:textColor="@color/colorPrimary" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:gravity="center" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="20sp" android:text="@string/avg" android:textSize="15sp" android:textStyle="italic" android:textColor="@color/colorAccent" /> <EditText android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/avg" android:textColor="@color/colorPrimary" android:gravity="center" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:gravity="center" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="20sp" android:text="@string/grade" android:textSize="15sp" android:textStyle="italic" android:textColor="@color/colorAccent" /> <EditText android:id="@+id/grade" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:textColor="@color/colorPrimary" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:gravity="right" > <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/btnok" android:textColor="#ffffff" android:background="@color/colorPrimary" android:id="@+id/btn1" /> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/btnclear" android:textColor="#ffffff" android:background="@color/colorAccent" android:id="@+id/btn2" /> </LinearLayout> </LinearLayout> </LinearLayout> |
colors.xml
1 2 3 4 5 6 | <?xml version="1.0" encoding="utf-8"?> <resources> <color name="colorPrimary">#008577</color> <color name="colorPrimaryDark">#00574B</color> <color name="colorAccent">#D81B60</color> </resources> |
strings.xml
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | <resources> <string name="app_name">Student Marks Calculation System</string> <string name="emptitle">Student Marks Calculation System</string> <string name="stname">Student Name</string> <string name="marks1">Marks 1</string> <string name="marks2">Marks 2</string> <string name="marks3">Marks 3</string> <string name="total">Total</string> <string name="avg">Average</string> <string name="grade">Grade</string> <string name="btnok">Ok</string> <string name="btnclear">Clear</string> </resources> |
style.xml
1 2 3 4 5 6 7 8 9 10 11 | <resources> <!-- Base application theme. --> <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar"> <!-- Customize your theme here. --> <item name="colorPrimary">@color/colorPrimary</item> <item name="colorPrimaryDark">@color/colorPrimaryDark</item> <item name="colorAccent">@color/colorAccent</item> </style> </resources> |
MainActitity.java
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 | package com.example.kobinath.myapplication; 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 ed1,ed2,ed3,ed4,ed5,ed6,ed7; Button btn1,btn2; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ed1 = findViewById(R.id.stname); ed2 = findViewById(R.id.mark1); ed3 = findViewById(R.id.mark2); ed4 = findViewById(R.id.mark3); ed5 = findViewById(R.id.total); ed6 = findViewById(R.id.avg); ed7 = findViewById(R.id.grade); btn1 = findViewById(R.id.btn1); btn2 = findViewById(R.id.btn2); btn1.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { stmarks(); } }); btn2.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { clear(); } }); } public void stmarks() { int m1,m2,m3,tot; double avg; String grade; m1 = Integer.parseInt(ed2.getText().toString()); m2 = Integer.parseInt(ed3.getText().toString()); m3 = Integer.parseInt(ed4.getText().toString()); tot = m1 + m2 + m3; ed5.setText(String.valueOf(tot)); avg = tot/3; ed6.setText(String.valueOf(avg)); if(avg > 75) { ed7.setText("A"); } else if(avg > 65) { ed7.setText("B"); } else if(avg > 55) { ed7.setText("C"); } else if(avg > 40) { ed7.setText("S"); } else { ed7.setText("Fail"); } } public void clear() { ed1.setText(""); ed2.setText(""); ed3.setText(""); ed4.setText(""); ed5.setText(""); ed6.setText(""); ed7.setText(""); ed1.requestFocus(); } } |
