Content Provider 2

activity_main.xml


<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout
 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"
 tools:context=".MainActivity"
 tools:ignore="Deprecated">
 <EditText
 android:id="@+id/idDate"
android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_x="16dp"
 android:layout_y="16dp"
 android:ems="10"
 android:hint="Enter Date to Fetch Note"/>
 <Button
 android:id="@+id/idSearch"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_x="16dp"
 android:layout_y="61dp"
 android:text="Search"/>
 <TextView
 android:id="@+id/idDisplay"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_x="16dp"
 android:layout_y="109dp"/>
</AbsoluteLayout>



MainActivity.java

package com.example.program4b;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;
import android.widget.Button;
import android.database.Cursor;
import android.widget.EditText;
import android.widget.TextView;
import androidx.appcompat.app.AppCompatActivity;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
 EditText date;
 Button search;
 TextView display;
 @Override
 protected void onCreate(Bundle b) {
 super.onCreate(b);
 setContentView(R.layout.activity_main);
 date = findViewById(R.id.idDate);
 search = findViewById(R.id.idSearch);
 display = findViewById(R.id.idDisplay);
 search.setOnClickListener(this);
 }
 @Override
 public void onClick(View v) {
 if(v.equals(search)) {
 String searchDate = date.getText().toString();
 Uri uri = Uri.parse("content://com.example.notesprovider/notes");
 String[] columns = {"date", "note"};
 String selection = "date = ?";
 String[] selectionArgs = {searchDate};
 Cursor c = getContentResolver().query(uri, columns, selection, selectionArgs, null);
 if (c.moveToNext()) {
 String dateText = c.getString(0);
 String noteText = c.getString(1);
 display.setText(dateText + " : " + noteText);
 } else {
 Toast.makeText(this, "No Note Found", Toast.LENGTH_SHORT).show();
 }
 }
 }
}