Bhanu: 2016

Java files

1.MainActivity

public class MainActivity extends AppCompatActivity {
ListView lv;
TextView tv3,tv5;
SQLiteDatabase db;
Cursor cursor;
RelativeLayout rl;
SharedPreferences sp;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.a);
lv = (ListView)findViewById(R.id.listView);
sp = getSharedPreferences("my_background",MODE_PRIVATE);
rl = (RelativeLayout)findViewById(R.id.r2);
int no = sp.getInt("k1",5475);
if (no==101)
{
rl.setBackgroundColor(Color.WHITE);

}
else if (no==102)
{
rl.setBackgroundColor(Color.RED);

}else if (no==103)
{
rl.setBackgroundColor(Color.GREEN);

}
db = openOrCreateDatabase("StudentRecordsDB", Context.MODE_PRIVATE, null);
try {
cursor = db.rawQuery("select * from news_inf", null);

SimpleCursorAdapter adapter = new SimpleCursorAdapter(
MainActivity.this, R.layout.line, cursor
, new String[]{"_id", "news_title"}
, new int[]{R.id.id1, R.id.my_title});
lv.setAdapter(adapter);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
tv5 = (TextView) view.findViewById(R.id.id1);
tv3 = (TextView) view.findViewById(R.id.my_title);

String n1 = tv3.getText().toString();
String n3 = tv5.getText().toString();

Intent i = new Intent(getApplicationContext(), Delete.class);
i.putExtra("k1", n1);
i.putExtra("k3", n3);
startActivity(i);
}
});

}

catch (Exception e)
{
Log.e("Read Data", "" + e);
Toast.makeText(MainActivity.this, "No Data", Toast.LENGTH_SHORT).show();
}

}
public void one(View v)
{
Intent i = new Intent(this,Add.class);
startActivity(i);
overridePendingTransition(R.anim.abc_fade_in, R.anim.abc_fade_out);

}
public void six (View v)
{
tv5 = (TextView)v.findViewById(R.id.id1);

String n1 = tv5.getText().toString();

db.execSQL("DELETE FROM news_inf WHERE _id='" +n1+ "'");
Toast.makeText(MainActivity.this, "deleted", Toast.LENGTH_SHORT).show();

cursor.requery();
}
@Override
public boolean onCreateOptionsMenu(Menu menu)
{
super.onCreateOptionsMenu(menu);
getMenuInflater().inflate(R.menu.menu1, menu);
return true;
}

public void one(MenuItem mi)
{
SharedPreferences.Editor se = sp.edit();
rl.setBackgroundColor(Color.WHITE);
se.putInt("k1", 101);
se.commit();
}
public void two(MenuItem mi)
{
SharedPreferences.Editor se = sp.edit();
rl.setBackgroundColor(Color.RED);
se.putInt("k1", 102);
se.commit();
}
public void three(MenuItem mi)
{
SharedPreferences.Editor se = sp.edit();
rl.setBackgroundColor(Color.GREEN);
se.putInt("k1", 103);
se.commit();
}

public void ten(View v)
{
Intent i = new Intent(this,Add.class);
startActivity(i);
overridePendingTransition(R.anim.abc_fade_in, R.anim.abc_fade_out);

}
}

2.ADD

public class Add extends Activity {

SQLiteDatabase db;

EditText et1;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.add);

et1 = (EditText)findViewById(R.id.et10);

db = openOrCreateDatabase("StudentRecordsDB", Context.MODE_PRIVATE, null);

db.execSQL("CREATE TABLE IF NOT EXISTS news_inf(_id integer primary key autoincrement,news_title VARCHAR);");

}

public void three(View v)

{

String n1 = et1.getText().toString().trim();

insertData(db, n1);

Toast.makeText(Add.this, "Added", Toast.LENGTH_SHORT).show();

Intent main = new Intent(Add.this, MainActivity.class);

startActivity(main);

et1.setText("");

}

private void insertData(SQLiteDatabase db

, String n1) {

db.execSQL("insert into news_inf values(null , ? )"

, new String[]{" " +n1});

}

3.Delete

public class Delete extends Activity {

SQLiteDatabase db;

TextView tv6,tv8;

EditText e1;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.delete);

e1 = (EditText)findViewById(R.id.textView);

tv8 = (TextView)findViewById(R.id.textView3);

Intent i = getIntent();

String n6 = i.getStringExtra("k1");

String n8 = i.getStringExtra("k3");

e1.setText(n6);

tv8.setText(n8);

db = openOrCreateDatabase("StudentRecordsDB", Context.MODE_PRIVATE, null);

}

public void four (View v) {

// delete data from table

db.execSQL("update news_inf SET news_title='"+e1.getText()+"'WHERE _id='" + tv8.getText() + "'");

Toast.makeText(Delete.this, "updated", Toast.LENGTH_SHORT).show();

this.returnHome();

}

private void returnHome() {

Intent home_intent = new Intent(getApplicationContext(),

MainActivity.class).setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

startActivity(home_intent);

}

Layouts

1.a

<?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: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:id="@+id/r2"

android:paddingTop="@dimen/activity_vertical_margin"

tools:context="com.example.bhanu1.notepad5.MainActivity">

<Button

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="ADD DETAILS"

android:id="@+id/button"

android:onClick="one"

android:layout_marginTop="0dp"

android:background="@drawable/file1"

android:layout_alignParentTop="true"

android:layout_centerHorizontal="true" />

<ListView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:id="@+id/listView"

android:divider="@android:color/transparent"

android:dividerHeight="3dp"

android:layout_alignParentRight="true"

android:layout_alignParentEnd="true"

android:layout_marginTop="59dp" />

<Button

android:layout_width="60dp"

android:layout_height="60dp"

android:background="@drawable/ie"

android:layout_marginBottom="30dp"

android:id="@+id/button2"

android:onClick="ten"

android:layout_alignParentBottom="true"

android:layout_alignParentRight="true"

android:layout_alignParentEnd="true" />

</RelativeLayout>

2.add

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

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

android:orientation="vertical" android:layout_width="match_parent"

android:layout_height="match_parent"

android:gravity="center"

android:layout_margin="20dp"

<EditText

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:id="@+id/et10"

android:textColor="#001aff"

android:layout_marginTop="10dp"

android:textSize="25dp"

android:hint="Enter text"

<Button

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="SAVE"

android:onClick="three"

android:layout_marginTop="20dp"

android:textSize="25dp"

android:id="@+id/button3"

android:background="@drawable/file1"

android:layout_gravity="center_horizontal" />

</LinearLayout>

3. delete

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

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

android:orientation="vertical" android:layout_width="match_parent"

android:layout_height="match_parent"

android:gravity="center_vertical">

<EditText

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:textAppearance="?android:attr/textAppearanceLarge"

android:text="Large Text"

android:layout_marginLeft="15dp"

android:textSize="20dp"

android:textColor="#ff0d00"

android:id="@+id/textView" />

<TextView

android:layout_marginTop="10dp"

android:textSize="20dp"

android:layout_marginLeft="15dp"

android:textColor="#ff0d00"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:visibility="gone"

android:textAppearance="?android:attr/textAppearanceLarge"

android:id="@+id/textView3" />

<Button

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="UPDATE"

android:layout_marginTop="25dp"

android:id="@+id/button3"

android:onClick="four"

android:background="@drawable/file1"

android:layout_gravity="center_horizontal" />

</LinearLayout>

4.line

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

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

android:orientation="vertical"

android:background="@drawable/aa"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

<TextView

android:id="@+id/id1"

android:onClick="six"

android:layout_width="50dp"

android:textColor="@android:color/transparent"

android:background="@drawable/d2"

android:layout_height="50dp"

android:layout_gravity="right"

android:layout_alignParentTop="true"

android:layout_alignBottom="@+id/my_title"

android:layout_alignParentRight="true"

android:layout_alignParentEnd="true" />

<TextView

android:id="@+id/my_title"

android:layout_width="wrap_content"

android:layout_marginLeft="20dp"

android:layout_height="50dp "

android:textSize="20dp"

</RelativeLayout>

Manifest file

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

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

package="com.example.bhanu1.notepad5">

<application

android:allowBackup="true"

android:icon="@mipmap/ic_launcher"

android:label="@string/app_name"

android:supportsRtl="true"

android:theme="@style/AppTheme">

<intent-filter>

</intent-filter>

</activity>

</application>

</manifest>

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